Which command allows you to verify speed settings on the switch port FastEthernet 0 1

SUMMARY Learn about port speed on a device or line card, support for multiple port speed details, guidelines and how to configure the port speed.

Port Speed Overview

Port speed refers to the maximum amount of data that the line card transmits through a port at any given second. Port speed is measured as follows:

• Kilobits per second (Kbps)

• Gigabits per second (Gbps)

• Terabits per second (Tbps)

Table 1 describes the different types of port speed configuration.

Table 1: Types of Port Speed Configuration

Table 2: Port Speed Configuration at PIC Level– Chassis Hierarchy

[edit chassis fpc fpc-slot pic pic-number]
user@host# set pic-mode pic-speed

[edit chassis fpc 0 pic 0]
user@host# set pic-mode 100g

[edit chassis fpc fpc-slot pic pic-number]
user@host# set number-of-ports number-of-active-physical-ports

[edit chassis fpc 0 pic 0]
user@host# set number-of-ports 4

[edit chassis fpc fpc-slot pic pic-number]
user@host# set number-of-sub-ports number-of-sub-ports

[edit chassis fpc 0 pic 1]
user@host# set number-of-sub-ports 4

[edit chassis fpc fpc-slot pic pic-number]
user@host# set port port-number unused

[edit chassis fpc 0 pic 1]
user@host# set port 2 Unused 

[edit chassis fpc 0 pic 0]
user@host# show 
pic-mode 100G;
number-of-ports 4;

[edit chassis fpc 0 pic 1]
user@host# show 
number-of-sub-ports 4;

Table 3: Port Speed Configuration at Port Level– Chassis Hierarchy

[edit chassis fpc fpc-slot pic pic-number]
user@host# set port port-number speed (10g | 40g | 100g)

[edit chassis fpc 0 pic 0]
user@host# set port 0 speed 40g
user@host# set port 1 speed 100g

[edit chassis fpc fpc-slot pic pic-number]
user@host# set number-of-sub-ports number-of-sub-ports

[edit chassis fpc 0 pic 1]
user@host# set number-of-sub-ports 4

[edit chassis fpc fpc-slot pic pic-number]
user@host# set port port-number unused

[edit chassis fpc 0 pic 1]
user@host# set port 2 Unused 

[edit chassis fpc 0 pic 0]
user@host# show 
port 0 {
    speed 40g;
}
port 1 {
    speed 100g;
}

[edit chassis fpc 0 pic 1]
user@host# show 
port 1 {  
number-of-sub-ports 4;
}

Table 4 describes the steps to configure the port speed for non-channelized interfaces from the [edit interfaces] hierarchy.

Table 4: Port Speed Configuration for non-channelized interfaces -Interfaces Hierarchy

[edit interfaces interface-name]
user@host# set speed (10g | 25g | 40g | 50g| 100g | 400g)

[edit interfaces et-1/0/3]
user@host# set speed 100g

[edit ]
user@host# wildcard range set interfaces interface-name speed speed

[edit ]
user@host# wildcard range set interfaces et-1/0/[0-5] speed 100g 

[edit]
user@host# set interfaces interface-name unused 

[edit]
user@host# set interfaces et-2/0/3 unused

et-x/y/z { 
speed 100g;
 
 unit 0 { 
    ...
 } 
  ... 

 unit N {
    ... 
 }

}
...

et-x/y/z { 
unused;
 
}

Table 5: Port Speed Configuration for channelized interfaces -Interfaces Hierarchy

[edit interfaces interface-name]
            user@host# set speed (10g | 25g | 40g | 50g| 100g | 400g)
        

[edit interfaces et-1/0/3]
            user@host# set speed 100g
        

[edit ]
            user@host# wildcard range set interfaces interface-name speed speed
        

[edit ]
            user@host# wildcard range set interfaces et-1/0/[7-12] speed 100g 
        

[edit interfaces interface-name]
                user@host# set number-of-sub-ports number-of-sub-ports
            

[edit interfaces et-1/0/3]
                user@host# set number-of-sub-ports 4
            

[edit]
                        user@host# set interfaces interface-name unused 
                    

[edit]
                        user@host# set interfaces et-2/0/4 unused
                    

et-x/y/z { 
                            speed 100g;
                            number-of-sub-ports 4;
                            
                            et-x/y/z:0 { 
                            unit 0{ 
                            ...
                            } 
                            }
                            
                            et-x/y/z:1 { 
                            unit 0{ 
                            ...
                            } 
                            }
                            
                            et-x/y/z:2 { 
                            unit 0{ 
                            ...
                            } 
                            }
                            
                            et-x/y/z:3 { 
                            unit 0{ 
                            ...
                            } 
                            }
                            
                            ...
                        

et-x/y/z:6 { 
                            unused;
                            
                        }

• Interface Naming Conventions
• What is Oversubscription?
• Supported Line Cards and Devices

Interface Naming Conventions

Each interface name includes a unique identifier and follows a naming convention. When you configure the interface, use the interface name. You can either configure a port as a single interface (non channelized interface) or partition the port into smaller data channels or multiple interfaces (channelized interfaces).

When multiple interfaces are supported on a physical port, you use the colon (:) notation in the interface naming conventions as a delimiter to differentiate the multiple interfaces on a physical port. In the interface naming convention, xe-x/y/z:channel:

• x refers to the FPC slot number.

• y refers to the PIC slot number.

• z refers to the physical port number.

• channel refers to the number of channelized interfaces.

When the 40-Gigabit Ethernet interfaces (et-fpc/pic/port) are channelized as 10-Gigabit Ethernet interfaces, the interface appears in the xe-fpc/pic/port:channel format, and channel is a value of 0 through 3.

Table 6 describes the naming formats for the channelized and non-channelized interfaces.

Table 6: Channelized and Non-Channelized Interface Naming Formats

What is Oversubscription?

Oversubscription occurs when you configure the speed of a port at the PIC level, and all ports that support that speed are enabled. To prevent oversubscription, you can configure the number of active ports that operate at the configured speed. Interfaces are created only for active ports. When oversubscription of Packet Forwarding Capacity is not supported, the demand on each Packet Forwarding Engine should be less than or equal to its forwarding capacity.

Supported Line Cards and Devices

Table 7 lists the line cards and devices, the port profile configuration, and link to the same.

Port Speed on ACX7509-FPC-20Y Overview

For information on ACX7509 router, see ACX7509 Universal Metro Router Hardware Guide.

For information on the line card, see Hardware Compatibility Tool (HCT).

• Port Speed for ACX7509-FPC-20Y Line Card
• Interface Naming Conventions for ACX7509-FPC-20Y

Port Speed for ACX7509-FPC-20Y Line Card

Table 8 summarizes the supported port speeds on an ACX7509-FPC-20Y line card.

The ACX7509-FPC-20Y line card has 20 SFP56 ports that support 1-Gbps, 10-Gbps, and 25-Gbps speeds.

Table 8: Port Speed for ACX7509-FPC-20Y Line Card

Table 9: Port Group for ACX7509-FPC-20Y Line Card

Table 10 provides the basic details of ACX7509-FPC-20Y line card.

Table 10: ACX7509-FPC-20Y Line Card Details and Description

To configure the speed of non-channelized interfaces, see Table 4.

Interface Naming Conventions for ACX7509-FPC-20Y

Table 11 lists the interface naming conventions for the ACX7509-FPC-20Y line card.

Table 11: Interface Naming Convention for ACX7509-FPC-20Y Line Card

Follow these guidelines when you configure the FPC ports:

• When you attempt to configure an invalid or unsupported speed for any port on the router, the port continues to operate with the default speed. An alarm is raised indicating that the port speed configuration is invalid.

• Ports within a port group can support mixed speeds. For instance, on slot 0, within port group (0-3), each port can support a different port speed (1-Gbps, 10-Gbps, or 25-Gbps).

• When you change the speed of a port within a port group, you'll observe a link flap on all ports of the port group.

Port Speed on ACX7509-FPC-16C Overview

For information on ACX7509 router, see ACX7509 Universal Metro Router Hardware Guide.

For information on the line card, see Hardware Compatibility Tool (HCT).

• Interface Naming Conventions for ACX7509-FPC-16C

Table 12 summarizes the supported port speeds on an ACX7509-FPC-16C line card.

The ACX7509-FPC-16C line card has 16 QSFP28 ports that support 100-Gbps and 40-Gbps speeds. Active ports are mentioned in the below table.

Table 12: Port Speed for ACX7509-FPC-16C Line Card

You can configure the speed of active ports only. You can configure 0,1, 4,5, 8,9, and 12,13 ports using breakout cables with four 25-Gbps and four 10-Gbps speed.

Table 13 provides the basic details of ACX7509-FPC-16C line card.

Table 13: ACX7509-FPC-16C Line Card Details and Description

To configure the speed of non-channelized interfaces, see Table 4. To configure the speed of channelized interfaces, see Table 5.

Interface Naming Conventions for ACX7509-FPC-16C

Table 14 lists the interface naming conventions for the ACX7509-FPC-16C line card.

Table 14: Interface Naming Convention for ACX7509-FPC-16C Line Card

For channelized and non-channelized interface naming formats, see Channelized and Non-Channelized Interface Naming Formats.

Follow these guidelines:

• If you channelize(4x10G or 4x25G) and non-channelize speed on adjacent ports, an alarm is generated indicating that the port speed configuration is invalid.

• Ensure you channelize adjacent ports and configure the unintended next port as unused. For example, to channelize Port 0, you must channelize both Port 0 and Port 1 or you must configure Port 1 as Unused.

• When you attempt to configure an unused port, an alarm is generated indicating that the slot is unsupported. For instance, if you attempt to configure the speed on Port 2, an alarm is generated indicating that the slot is unsupported.

• When you attempt to configure an invalid or unsupported speed for any port on the router, the port continues to operate with the default speed. An alarm is raised indicating that the port speed configuration is invalid.

Port Speed on ACX7509-FPC-4CD Overview

For information on ACX7509 router, see ACX7509 Universal Metro Router Hardware Guide.

For information on the line card, see Hardware Compatibility Tool (HCT).

• Port Speed for ACX7509-FPC-4CD Line Card
• Interface Naming Conventions for ACX7509-FPC-4CD

Table 15 summarizes the supported port speeds on an ACX7509-FPC-4CD line card.

Port Speed for ACX7509-FPC-4CD Line Card

The ACX7509-FPC-4CD line card has 4 QSFP56-DD ports that support 4x100-Gbps and 400-Gbps speeds. ACX7509-FPC-4CD line card is supported only in FPC slot 1 and 5.

Table 15: Port Speed for ACX7509-FPC-4CD Line Card

You can configure the speed of active ports only. You can configure 0,1, 2, and 3 using breakout cables with 400-Gbps and four 100-Gbps speed. If the FPC is connected to an unsupported port, the port configuration is invalid.

Table 16 provides the basic details of ACX7509-FPC-4CD line card.

Table 16: ACX7509-FPC-4CD Line Card Details and Description

To configure the speed of non-channelized interfaces, see Table 4. To configure the speed of channelized interfaces, see Table 5.

Interface Naming Conventions for ACX7509-FPC-4CD

Table 17 lists the interface naming conventions for the ACX7509-FPC-4CD line card.

Table 17: Interface Naming Convention for ACX7509-FPC-4CD Line Card

For channelized and non-channelized interface naming formats, see Channelized and Non-Channelized Interface Naming Formats.

Port Speed on ACX7100-48L Router Overview

For information about ACX7100-48L router, see ACX7100-48L Universal Metro Router Hardware Guide.

To view the supported transceivers, optical interfaces, and DAC cables on ACX7100-48L, see Hardware Compatibility Tool (HCT).

Port Speed for ACX7100-48L summarizes the supported port speeds on an ACX7100-48L router.

Table 18: Port Speed for ACX7100-48L Router

Table 19 provides the basic details of ACX7100-48L router.

Table 19: ACX7100-48L Router Details and Description

To configure the speed of non-channelized interfaces, see Table 4. To configure the speed of channelized interfaces, Table 5.

Interface Naming Conventions for ACX7100-48L

Table 20 lists the interface naming conventions for the ACX7100-48L router.

Table 20: Interface Naming Convention for ACX7100-48L Router

For channelized and non-channelized interface naming formats, see Channelized and Non-Channelized Interface Naming Formats.

ACX7100-48L has twelve Port Macro (PMs). Six of the twelve PMs are for port 0-47. Each PM has eight ports. By default, port 0-47 support 10G.

Table 21 provides the port macro port speed details of ACX7100-48L router.

Table 21: ACX7100-48L Port Macro Port Speed Configuration Router

Follow these guidelines when you configure the speed of a port:

• Use the speed command to set the speed on tri-rate SFP port. Use the show chassis pic fpc-slot 0 pic-slot 0 command to view supported port speeds.

• Port Macro does not support the combination of port speed, 25Gbps and 50Gbps. For example, for ports 0-7, you can specify the speed for port 4 as 50G and for port 2 as 10G. Alternatively, you can specify the speed of port 4 as 25G and for port 2 as 10G. When you configure the speed for port 4 as 50G and for port 2 as 25G and commit the configuration, an alarm is generated.

• An alarm is raised when optics does not support configured speed.

Port Speed on ACX7100-32C Router Overview

For information on ACX7100-32C routers, see ACX7100-32C Universal Metro Router Hardware Guide.

To view the supported transceivers, optical interfaces, and DAC cables on ACX7100-32C, see Hardware Compatibility Tool (HCT).

Table 22: Port Speed for ACX7100-32C

Use the speed command to set the speed on tri-rate SFP port. To configure the speed of non-channelized interfaces, use Table 4. To configure the speed of channelized interfaces, use Table 5.

Interface Naming Conventions for ACX7100-32C

Interface Naming Convention for ACX7100-32C lists the interface naming conventions for the ACX7100-32C routers.

Table 23: Interface Naming Convention for ACX7100-32C

For channelized and non-channelized interface naming formats, see Channelized and Non-Channelized Interface Naming Formats.

Port Speed on ACX710 Router Overview

For information on ACX710 routers see ACX710 Universal Metro Router Hardware Guide.

To view the supported transceivers, optical interfaces, and DAC cables on ACX710, see Hardware Compatibility Tool (HCT).

Table 24 summarizes the supported port speeds on a ACX710 router.

Table 24: Port Speed for ACX710

Use the speed command to set the speed on tri-rate copper SFP port. For information on how to configure the speed at the PIC level, see Table 2. For information on how to configure the speed at the port level, see Table 3.

Interface Naming Conventions

Table 25 lists the interface naming conventions for the ACX710 routers.

Table 25: Interface Naming Convention for ACX710

For channelized and non-channelized interface naming formats, see Table 6.

Port Speed on ACX5448 Router Overview

For information on ACX5448 routers see ACX5448, ACX5448-D, and ACX5448-M Universal Metro Routers Hardware Guide.

To view the supported transceivers, optical interfaces, and DAC cables on ACX5448, see Hardware Compatibility Tool (HCT).

Table 26, Port Speed for ACX5448-D , and Table 28 summarizes the supported port speeds on a ACX5448, ACX5448-D, and ACX5488-M routers.

Table 26: Port Speed for ACX5448

Table 27: Port Speed for ACX5448-D

Table 28: Port Speed on ACX5448-M

Use the speed command to set the speed on tri-rate copper SFP port. For information on how to configure the speed at the PIC level, see Table 2. For information on how to configure the speed at the port level, see Table 3.

Interface Naming Conventions

Table 29 lists the interface naming conventions for the ACX5448 routers.

Table 29: Interface Naming Convention for ACX5448

For each CFP2-DCO optical module installed on ports 38 and 39, one optical transport interface (-ot) is created. The ACX5448-D router, supports two ot interfaces (ot-0/2/0 and ot-0/2/1). You can map two 100-Gigabit Ethernet (et) interfaces can be mapped to each otinterface, depending on the rate (100 Gbps or 200 Gbps) that you configure for the CFP2 ports. As a result, four et interfaces are possible: et-0/2/0, et-0/2/1, et-0/2/2, and et-0/2/3. For information on the interface mapping and modulation format for ACX5448-D routers, see Interface Mapping and Modulation Format for ACX5448-D Routers.

For information on multipelxing on ACX5448-D routers, see Multiplexing on ACX5448-D Routers.

For channelized and non-channelized interface naming formats, see Table 6.

Port Speed on MPC7E-MRATE Overview

For information on the line card, see MX Series 5G Universal Routing Platform Interface Module Reference.

To view the supported transceivers, optical interfaces, and DAC cables on MPC7E-MRATE, see Hardware Compatibility Tool (HCT).

Table 30 summarizes the Packet Forwarding Engine mapping and the supported port speeds.

Table 30: Port Speed for MPC7E-MRATE

Follow these guidelines when you configure the speed of a port:

• By default, all ports of the MPC7E-MRATE MPC operate as four 10-Gigabit Ethernet interfaces. Therefore, when booting the MPC:

  • If you have not configured the port speed or if you have configured an invalid port speed, an alarm is generated to indicate that the configuration is invalid. All the ports operate as four 10-Gigabit Ethernet interfaces.

  • If valid port speeds are configured, the PIC and MIC operate at the configured speed.

• When you change an existing port speed configuration at the port level, you must reset the MPC7E-MRATE PIC for the configuration to take effect. An alarm is generated indicating the change in port speed configuration.

• When you change an existing port speed configuration with an invalid port speed configuration, an alarm is generated indicating that the port speed configuration is invalid. For example, on the MPC7E-MRATE, if you configure the port speed of port 3 as 100 Gbps, it is an invalid configuration. MPC7E -MRATE supports 100 Gbps only on ports 2 and 5. The MPC continues to operate using the existing port speed configuration or the default port speed.

• You cannot configure the port speed at the PIC level and the port level simultaneously. Error messages are displayed when you attempt to commit such configurations.

• When you configure the port speed at the port level, only the configured ports are enabled. Other ports are disabled.

For information on how to configure the speed at the PIC level, see Table 2. For information on how to configure the speed at the port level, see Table 3.

• Interface Naming Conventions for MPC7E-MRATE
• Supported Active Physical Ports on MPC7E-MRATE to Prevent Oversubscription

Interface Naming Conventions for MPC7E-MRATE

Table 31 lists the naming conventions used for interfaces on MPC7E-MRATE for MX240, MX480, MX960, MX2010, and MX2020 routers.

Table 31: Interface Naming Convention for MPC7E-MRATE

Supported Active Physical Ports on MPC7E-MRATE to Prevent Oversubscription

Table 32 lists the active physical ports on MPC7E-MRATE.

Table 32: Active Physical Ports on MPC7E-MRATE

Port Speed on MPC7E-10G Overview

For information on the line card, see MX Series 5G Universal Routing Platform Interface Module Reference.

To view the supported transceivers, optical interfaces, and DAC cables on MPC7E-10G, see Hardware Compatibility Tool (HCT).

Table 33 summarizes the Packet Forwarding Engine mapping and the supported port speeds.

Table 33: Port Speed for MPC7E-10G

Starting with Junos OS Release 20.4R1, you can configure 1-Gbps speed on 10-Gigabit Ethernet ports of the MPC7E-10G.

Each of the forty 10-Gigabit Ethernet ports can be configured to operate as 1-Gigabit Ethernet port. To configure the operating speed of the 10-Gbps port to 1-Gbps, use the speed statement at the [edit interfaces interfacename gigether-options] hierarchy level. After you commit the configuration, the operating speed of the 10-Gbps port changes to 1-Gbps speed without any MPC, PIC, or interface bounce. To view the speed configured on the interface, use the show interfaces extensive command. In the output, the Speed Configuration field displays the current operating speed of the interface. If the interface is configured with 1-Gbps speed, then the Speed Configuration field displays 1G; if the interface is configured with 10-Gbps speed, Speed Configuration displays AUTO.

Follow these guidelines when you configure the speed of the port:

• By default, all ports of the MPC7E-10G MPC operate as four 10-Gigabit Ethernet interfaces. Therefore, when booting the MPC:

  • If you have not configured the port speed or if you have configured an invalid port speed, an alarm is generated to indicate that the configuration is invalid. All the ports operate as four 10-Gigabit Ethernet interfaces.

  • If valid port speeds are configured, the PIC and MIC operate at the configured speed.

• When you change an existing port speed configuration at the port level for MPC7E-10G, you must restart the MIC for the configuration to take effect.

  An alarm is generated indicating the change in port speed configuration.

• When you change an existing port speed configuration with an invalid port speed configuration, an alarm is generated indicating that the port speed configuration is invalid.

• You cannot configure the port speed at the PIC level and the port level simultaneously. Error messages are displayed when you attempt to commit such configurations.

• When you configure the port speed at the port level, only the configured ports are enabled. Other ports are disabled.

For information on how to configure the speed at the PIC level, see Table 2. For information on how to configure the speed at the port level, see Table 3.

• Interface Naming Conventions for MPC7E-10G
• Supported Active Physical Ports on MPC7E-10G to Prevent Oversubscription

Interface Naming Conventions for MPC7E-10G

Table 34 lists the naming conventions used for interfaces on MPC7E-10G for MX240, MX480, MX960, MX2010, and MX2020 routers.

Table 34: Interface Naming Convention for MPC7E-10G

Supported Active Physical Ports on MPC7E-10G to Prevent Oversubscription

Table 35 lists the active physical ports on MPC7E-10G

Table 35: Active Physical Ports on MPC7E-10G

Port Speed on MIC-MRATE Overview

For information on the line card, see MX Series 5G Universal Routing Platform Interface Module Reference.

To view the supported transceivers, optical interfaces, and DAC cables on MIC-MRATE, see Hardware Compatibility Tool (HCT).

Table 36 summarizes the Packet Forwarding Engine mapping and the supported port speeds.

Table 36: Port Speed for MIC-MRATE

Follow these guidelines when you configure the speed of the port:

• By default, all ports of the MIC-MRATE MPC operate as four 10-Gigabit Ethernet interfaces. Therefore, when booting the MPC:

  • If you have not configured the port speed or if you have configured an invalid port speed, an alarm is generated to indicate that the configuration is invalid. All the ports operate as four 10-Gigabit Ethernet interfaces.

  • If valid port speeds are configured, the PIC and MIC operate at the configured speed.

• When you change an existing port speed configuration at the port level for MPC8E or MPC9E, you must reset the MIC for the configuration to take effect. You can use the request chassis mic mic-slot mic-slot-number fpc-slot fpc-slot-number (offline | online) command to reset the MIC and apply your configuration changes.

  An alarm is generated indicating the change in port speed configuration.

• When you change an existing port speed configuration with an invalid port speed configuration, an alarm is generated indicating that the port speed configuration is invalid.

• You cannot configure the port speed at the PIC level and the port level simultaneously. Error messages are displayed when you attempt to commit such configurations.

• When you configure the port speed at the port level, only the configured ports are enabled. Other ports are disabled.

For information on how to configure the speed at the PIC level, see Table 2. For information on how to configure the speed at the port level, see Table 3.

• Interface Naming Conventions for MIC-MRATE
• Supported Active Physical Ports on MIC-MRATE to Prevent Oversubscription

Interface Naming Conventions for MIC-MRATE

Table 37 lists the naming conventions used for interfaces on MIC-MRATE installed on Slot 0 of MPC8E and MPC9E.

Table 37: Interface Naming Convention for MIC-MRATE

Table 38 lists the naming conventions used for interfaces on MIC-MRATE installed on Slot 1 of MX10003 MPC.

Table 38: Interface Naming Convention for MIC-MRATE

Supported Active Physical Ports on MIC-MRATE to Prevent Oversubscription

Table 39 lists the active physical ports on MIC-MRATE (MPC8E)

Table 39: Active Physical Ports on MIC-MRATE (MPC8E)

Table 40 lists the active physical ports on MIC-MRATE (MPC9E and MPC8E (1.6T))

Table 40: Active Physical Ports on MIC-MRATE (MPC9E and MPC8E (1.6T mode))

Port Speed on MX10003 MPC Overview

For information on the line card, see MX Series 5G Universal Routing Platform Interface Module Reference.

To view the supported transceivers, optical interfaces, and DAC cables on MX10003 MPC, see Hardware Compatibility Tool (HCT).

Table 41 summarizes the Packet Forwarding Engine mapping and the supported port speeds.

Table 41: Port Speed for MX10003 MPC

Follow these guidelines when you configure the speed of a port:

• By default, the MX10003 router comes up with the PIC mode where all the interface operates at the same speed of 10-Gbps. That is, by default, both the PICs (PIC 0 and PIC 1) operate at 10-Gbps speed. To use different port speeds, you must first switch to the port mode and then change the default speed.

  To change the default speed, you must select a port and configure a different port speed on it and reset both the PICs for the configuration to take effect. For example, select 40GE or 100GE on PIC 1 and 10GE on PIC 0. For this configuration to take effect, you must reset both PICs.

• Regardless of the line card— MIC (PIC1) or fixed-port PIC (PIC0) installed —you must configure both the PICs and all the associated ports, under the [edit chassis] hierarchy. Configuring ports on only one of the PICs results in an invalid configuration.

• The port speed configuration on the fixed-port PIC and the MIC must be homogenous. However, at port level you can configure port speeds in heterogeneous mode.

  For example, if you want to configure the port speed as 10 Gbps, the port speed of the fixed-port PIC and the MIC should be configured to 10 Gbps. If you want to configure the port speed as 40 Gbps, the port speed of the fixed-port PIC and the MIC should be configured to 40 Gbps. However, if you choose to configure all ports of the MX10003 MPC to operate as 100-Gigabit Ethernet interfaces, the ports on the MIC have to be configured to 100 Gbps and the number-of-ports number-of-active-physical-ports statement on the fixed-port PIC must be set to 0.

• When you configure the port speed at the port level, only the configured ports are active. Other ports are disabled.

• When you choose an existing port speed configuration with an invalid port speed configuration, an alarm is generated indicating that the port speed configuration is invalid.

• You cannot configure the ports which will oversubscribe the Packet Forwarding Engine. For example, a combination of eleven 100-Gigabit Ethernet interfaces on the MIC and ten 10-Gigabit Ethernet interfaces on the fixed-port PIC will result in an invalid configuration. If you try to commit an invalid configuration, the configuration will get committed. However, the port will not be activated. You can execute the show chassis alarms to display the error message. The valid configuration in this case would be eleven 100-Gigabit Ethernet interfaces on the MIC and eight 10-Gigabit Ethernet interfaces on the fixed-port PIC.

• You cannot configure the speed of the port at the PIC level and the port level simultaneously. Error messages are displayed when you try to commit such configurations.

• When you change an existing port speed configuration at the port level, you must reset the PIC for the configuration to take effect. When you change an existing port speed configuration at the PIC level, the MPC automatically resets the PIC.

For information on how to configure the speed at the PIC level, see Table 2. For information on how to configure the speed at the port level, see Table 3.

• Port Speed Support on MX10003 MPC
• Interface Naming Conventions
• Supported Active Physical Ports on MX10003 MPC to Prevent Oversubscription

Port Speed Support on MX10003 MPC

Table 42 summarizes the port mode configuration at the Packet Forwarding Engine level.

Table 42: PFE Based Port Mode Configuration

Note:

Use the port-checker tool to check whether the combination of ports you want to use is valid or not.

Table 43 summarizes the PIC mode configuration.

Table 43: PIC Mode Configuration

Interface Naming Conventions

Table 44 lists the naming conventions used for interfaces on the fixed-port PIC when installed in slot 0 of the MX10003 MPC. Table 45 lists the naming conventions used for interfaces on the modular MIC when installed in slot 1 of the MPC.

Table 44: Interface Naming Convention for the Fixed-Port PIC in Slot 0 of MX10003 MPC

Table 45: Interface Naming Convention for Modular MIC Installed in Slot 1 of MX10003 MPC

Supported Active Physical Ports on MX10003 MPC to Prevent Oversubscription

Table 46 lists the active physical ports on MX10003 MPC at the MIC Level.

Table 46: Active Physical Ports on the MX10003 MPC at the MIC level

Table 47 list the active physical ports on MX10003 MPC at PIC Level.

Table 47: Active Physical Ports on MX10003 MPC at the PIC level

Port Speed on MX204 Overview

For information on the router, see MX204 Universal Routing Platform Hardware Guide.

To view the supported transceivers, optical interfaces, and DAC cables on MX204, see Hardware Compatibility Tool (HCT).

Table 48 summarizes the Packet Forwarding Engine mapping and the supported port speeds for MX204.

Table 48: Port Speed for MX204

Table 49: Maximum number of ports Configurable at PIC or Port level (MX204)

Table 50: Valid Port Speed Combinations at Port Level (MX204)

Table 51: Valid Port Speed Combinations at PIC level (MX204)

Follow these guidelines when you configure the speed of the port:

• By default, the MX204 router comes up with PIC mode where all the interfaces operate at the same speed of 10-Gbps. By default, both the PICs (PIC0 and PIC1) operate at 10-Gbps speed. To use different port speeds, you must first switch to the port mode. When you switch modes, either from PIC mode to port mode or from port mode to PIC mode, the PIC restarts automatically.

• To change the default speed, you must select a port and configure a different port speed on it and reset both the PICs for the configuration to take effect. For example, select 40GE or 100GE on PIC0 and 10GE on PIC1. For this configuration to take effect, you must reset both PICs.

• You cannot configure 1-Gbps speed at PIC level and port level. But, you can configure the port configured at 10-Gbps speed to operate at 1-Gbps speed by using the speed statement. After you commit the configuration, the operating speed of the 10-Gbps port changes to 1-Gbps speed, but the show interface command displays the speed configuration (operating port speed) as 1GE.

• Regardless of the line card— MIC (PIC1) or fixed-port PIC (PIC0) installed —you must configure both the PICs and all the associated ports, under the [edit chassis] hierarchy. Configuring ports on only one of the PICs results in an invalid configuration.

• In PIC mode, the MX204 router does not support heterogeneous mode. That is, in PIC mode if 40-Gbps or 100-Gbps speed is configured on PIC 0, then the number-of-ports on PIC 1 must be configured to 0 only. The heterogeneous mode is supported only on port mode.

• When you configure the port speed at the port level, only the configured ports are active. Other ports are disabled.

• When you choose an existing port speed configuration with an invalid port speed configuration, an alarm is generated indicating that the port speed configuration is invalid.

• You cannot configure port speed at the PIC level and the port level simultaneously. Error messages are displayed when you try to commit such configurations.

For information on how to configure the speed at the PIC level, see Table 2. For information on how to configure the speed at the port level, see Table 3.

• Interface Naming Conventions for MX204
• Supported Active Physical Ports on MX204 to Prevent Oversubscription

Interface Naming Conventions for MX204

Table 52: Interface Naming Conventions (MX204)

Supported Active Physical Ports on MX204 to Prevent Oversubscription

Table 53: Active Physical Ports (MX204) at PIC Level

Port speed on MX304 Router Overview

For information on the line card, see MX Series 5G Universal Routing Platform Interface Module Reference.

To view the hardware compatibility matrix for optical interfaces, transceivers, and DACs, see Hardware Compatibility Tool (HCT).

For information on MX304, see Protocols and Application supported by the MX304.

Table 54 summarizes the supported port speeds on MX304 router.

Table 54: Port Speed for MX304

Follow these guidelines when you configure the speed of a port:

• By default, the MX304 router comes up with PIC mode where all the interfaces operate at the same speed of 100 Gbps. By default, both the PICs (PIC0 and PIC1) operate at 100 Gbps speed. To use different port speeds, you must first switch to the port mode. When you switch modes, either from PIC mode to port mode or from port mode to PIC mode, the PIC restarts automatically.

• To change the default speed, you must select a port and configure a different port speed on it and reset both the PICs for the configuration to take effect.

• If you do not configure the port speed at the PIC level using the pic-mode option, then the default port speed is 100 Gbps.

• When you change the speed at the PIC level, the PIC restarts automatically with the new configured speed.

• You cannot configure the port speed at the PIC level and the port level simultaneously. Error messages are displayed when you attempt to commit the configuration.

• When you change the port configuration at the port level, the interfaces corresponding to the affected port are deleted and then re-created.

• You can configure all ports in 100 Gbps at the same time.

• If you configure the port speed of a port on any PIC to 100 Gbps and then configure the port speed of port 0 of the same PIC to 100 Gbps, the port bounces back automatically. The 100-Gigabit Ethernet interface is created only after you manually restart the PIC.

• When you change an existing port speed configuration with an invalid port speed configuration, an alarm is generated indicating that the port speed configuration is invalid. The fpc continues to operate with the last available configuration. If the fpc is rebooted with Invalid configuration, the fpc move to the default mode.

Table 55 lists the interface naming conventions for MX304.

Table 55: Interface Naming Convention for MX304

Port Speed on MIC-MACSEC-20GE Overview

For information on the MIC, see MX Series 5G Universal Routing Platform Interface Module Reference.

To view the supported transceivers, optical interfaces, and DAC cables on MIC-MACSEC-20GE, see Hardware Compatibility Tool (HCT).

Table 56 summarizes the Packet Forwarding Engine mapping and the supported port speeds.

Table 56: Port Speed for MIC-MACSEC-20GE

Follow these guidelines when you configure the speed of the port:

• By default, all ports of the MIC-MACSEC-20GE MIC operate as 1-Gigabit Ethernet interfaces. In this mode, the ports in the MIC are created as “ge” interfaces distributed across PIC0 and PIC1.

• The twenty 1-Gigabit Ethernet SFP ports distributes the ports across PIC0 and PIC1, that are logical PICs on the physical MIC. The two 10-Gigabit Ethernet are created by distributing the ports in either of the PICs.

• The MIC-MACSEC-20GE MIC also provides 128-bit and 256-bit MACsec encryption on all the twenty 1-Gigabit Ethernet and on the two 10-Gigabit Ethernet ports. By default, 128-bit MACsec encryption is supported.

• In 10-Gigabit Ethernet mode, the ports in the MIC will be created as “xe” interfaces one each on PIC 0 and PIC 1. In this mode, the 10G ports physically maps to the front panel port 8 and 9 on the second PIC of the MIC (that is marked on the front panel of the MIC). In the 10G mode, only the marked ports are operational and other physical ports are disabled.

• Use the pic-mode 10G command to set the PIC to operate in 10G mode. Both the PICs on the MIC must be configured in the same pic-mode, otherwise the configuration does not take effect. Any mis-configuration results in the PICs operating in default pic-mode, that is, to be in 20x1GE where all ports are in 1-GE port speed.

• When you change the speed of the port from 1-Gbps to 10-Gbps or vice versa, the Flexible PIC Concentrator (FPC) in MX240, MX480, MX960 routers and the Forwarding Engine Board (FEB) in MX80, MX104 routers undergoes an automatic bounce or a reboot.

• The 10-Gbps-capable ports (ports 8 and 9) of the MIC-MACSEC-20GE MIC may display the link status as up while the peer side is down. In this case, it is recommended to disable auto-negotiation and set the speed to 1-Gbps on the peer side to bring the link up on the peer side.

For information on how to configure the speed at the PIC level, see Table 2. For information on how to configure the speed at the port level, see Table 3.

Interface Naming Conventions for MIC-MACSEC-20GE

Table 57: Interface Naming Conventions (MIC-MACSEC-20GE)

Port Speed on MPC10E-10C-MRATE Overview

For information on the line card, see MX Series 5G Universal Routing Platform Interface Module Reference.

To view the supported transceivers, optical interfaces, and DAC cables on MPC10E-10C-MRATE, see Hardware Compatibility Tool (HCT).

Table 58 summarizes the Packet Forwarding Engine mapping and the supported port speeds.

Table 58: Port Speed for MPC10E-10C-MRATE

Follow these guidelines when you configure the speed of a port:

• By default, the MPC10E-10C-MRATE comes up with the PIC mode where all the interface operates at the same speed of 100-Gbps. That is, by default, all the PICs (PIC 0 and PIC 1) operate at 100-Gbps speed.

• When you change the speed at the PIC level, the PIC restarts automatically with the new configured speed.

• When you configure the speed of a port at the port level, then only the speed of that port is modified. All other ports in the PIC remain unaffected.

• You cannot configure the port speed at the PIC level and the port level simultaneously. Commit fails when you configure the port speed at the PIC level and port level simultaneously.

• Oversubscription of Packet Forwarding Engine (PFE) capacity is not supported. The demand on each PFE must be less than or equal to its forwarding capacity.
• You can configure active ports to prevent oversubscription. See Table 62 for list of supported active ports on MPC10E-10C-MRATE.

For information on how to configure the speed at the PIC level, see Table 2. For information on how to configure the speed at the port level, see Table 3.

• Port Speed Support on MPC10E-10C-MRATE
• Interface Naming Conventions
• Supported Active Physical Ports on MPC10E-10C-MRATE to Prevent Oversubscription

Port Speed Support on MPC10E-10C-MRATE

Different PICs in the MPC10E-10C-MRATE can operate at different speeds. That is, PIC speed of one PIC does not apply to the other PICs in the MPC.

Table 59 summarizes the port profile configuration on MPC10E-10C-MRATE.

Table 59: Port speed support on MPC10E-10C-MRATE

Table 60 summarizes the port profile combinations with 400GE on MPC10E-10C-MRATE.

Table 60: Port Speed Combinations with 400GE on MPC10E-10C-MRATE

Interface Naming Conventions

Table 61 lists the interface naming conventions for the MPC10E-10C-MRATE.

Table 61: Interface Naming Convention for MPC10E-10C-MRATE

Supported Active Physical Ports on MPC10E-10C-MRATE to Prevent Oversubscription

Table 62 lists the active ports with port speed configuration at PIC level for MPC10E-10C-MRATE.

Table 62: Active Ports with port speed configured at PIC level

Port Speed on MPC10E-15C-MRATE Overview

For information on the line card, see MX Series 5G Universal Routing Platform Interface Module Reference.

To view the supported transceivers, optical interfaces, and DAC cables on MPC10E-15C-MRATE, see Hardware Compatibility Tool (HCT).

Table 63 summarizes the Packet Forwarding Engine mapping and the supported port speeds.

Table 63: Port Speed for MPC10E-15C-MRATE

Follow these guidelines when you configure the speed of a port:

• By default, the MPC10E-15C-MRATE comes up with the PIC mode where all the interface operates at the same speed of 100-Gbps. That is, by default, all the PICs (PIC 0, PIC1 and PIC 2) operate at 100-Gbps speed.

• When you change the speed at the PIC level, the PIC restarts automatically with the new configured speed.

• When you configure the speed of a port at the port level, then only the speed of that port is modified. All other ports in the PIC remain unaffected.

• You cannot configure the port speed at the PIC level and the port level simultaneously. Commit fails when you configure the port speed at the PIC level and port level simultaneously.

• Oversubscription of Packet Forwarding Engine (PFE) capacity is not supported. The demand on each PFE must be less than or equal to its forwarding capacity.
• You can configure active ports to prevent oversubscription. See Table 67 for list of supported active ports on MPC10E-15C-MRATE.

For information on how to configure the speed at the PIC level, see Table 2. For information on how to configure the speed at the port level, see Table 3.

• Port Speed Support on MPC10E-15C-MRATE
• Interface Naming Conventions
• Supported Active Physical Ports on MPC10E-15C-MRATE to Prevent Oversubscription

Port Speed Support on MPC10E-15C-MRATE

Different PICs in the MPC10E-15C-MRATE can operate at different speeds. That is, PIC speed of one PIC does not apply to the other PICs in the MPC.

Table 64 summarizes the port profile configuration on MPC10E-15C-MRATE.

Table 64: Port speed support on MPC10E-15C-MRATE

Table 65 summarizes the port profile combinations with 400GE on MPC10E-15C-MRATE.

Table 65: Port Speed Combinations with 400GE on MPC10E-15C-MRATE

Interface Naming Conventions

Table 66 lists the interface naming conventions for the MPC10E-15C-MRATE.

Table 66: Interface Naming Convention for MPC10E-15C-MRATE

Supported Active Physical Ports on MPC10E-15C-MRATE to Prevent Oversubscription

Table 67 list the active ports with port speed configuration at PIC level for MPC10E-15C-MRATE.

Table 67: Active Ports with port speed configuration at PIC level

Port Speed on MX2K-MPC11E Overview

For information on the line card, see MX Series 5G Universal Routing Platform Interface Module Reference.

To view the supported transceivers, optical interfaces, and DAC cables on MX2K-MPC11E, see Hardware Compatibility Tool (HCT).

Table 68 summarizes the Packet Forwarding Engine mapping and the supported port speeds.

Table 68: Port Speed for the MX2K-MPC11E

Follow these guidelines when you configure the speed of a port:

• If you do not configure the port speed at the PIC level using the pic-mode option, then the default port speed is 100 Gbps.

• Ports 0 through 4 on each PIC of the MX2K-MPC11E MPC supports speeds of 100 Gbps.

• When you change the speed at the PIC level, the PIC restarts automatically with the new configured speed.

• You cannot configure the port speed at the PIC level and the port level simultaneously. Error messages are displayed when you attempt to commit the configuration.

• When you change the port configuration at the port level, the interfaces corresponding to the affected port are deleted and then re-created.

• You can configure a maximum bandwidth of 500 Gbps per PIC. For example, if you configure the speed of Port 0 of a PIC to 400 Gbps, and the speed of Port 1 of a PIC to 100 Gbps, then you cannot configure any additional ports on that PIC. If you attempt to configure an additional port, it is an invalid configuration.

• If you configure the port speed of a port on any PIC to 100 Gbps and then configure the port speed of port 0 of the same PIC to 400 Gbps, an alarm is generated to indicate that you must restart the PIC. The 400-Gigabit Ethernet interface is created only after you manually restart the PIC.

• When you change an existing port speed configuration with an invalid port speed configuration, an alarm is generated indicating that the port speed configuration is invalid. The MPC continues to operate using the existing port speed configuration or the default port speed.

For information on how to configure the speed at the PIC level, see Table 2. For information on how to configure the speed at the port level, see Table 3.

• Interface Naming Conventions for MPC11E
• Supported Active Physical Ports on MX2K-MPC11E to Prevent Oversubscription

Interface Naming Conventions for MPC11E

Table 69 lists the interface naming conventions for the MX2K-MPC11E.

Table 69: Interface Naming Convention for MX2K-MPC11E

Supported Active Physical Ports on MX2K-MPC11E to Prevent Oversubscription

Table 70 list the active ports with port speed configuration at PIC level for MX2K-MPC11E.

Table 70: Active Ports with port speed configuration at PIC level

Port Speed on MX10K-LC480 Overview

For information on the line card, see Protocol and App Support for MX10K-LC480.

For information about platform support, see Hardware Compatibility Tool (HCT)

For details on software feature support, see MX10K-LC480 line card- Software Support and Description .

Table 71: MX10K-LC480 line card - Software Support and Description

For details on the port speed support on MX10K-LC480 line card, see Table 2

Table 72: Port speed for MX10K-LC480

For information on how to configure the speed at the PIC level, see Table on page 295.

For details on the interface naming conventions for the MX10K-LC480 line card. See Table 3.

Table 73: Interface Naming Convention for MX10K-LC480

Port Speed on MX10K-LC2101

For information on the line card, see MX10K-LC2101 for MX10008 Routers.

To view the supported transceivers, optical interfaces, and DAC cables on MX10K-LC2101, see Hardware Compatibility Tool (HCT).

Table 74 summarizes the Packet Forwarding Engine mapping and the supported speeds.

Table 74: Port Speed for MX10K-LC2101

Starting with Junos OS Release 19.4R1, you can now configure 1-Gbps speed on 10-Gigabit Ethernet ports of the MX10K-LC2101 MPC.

Each of the 40-Gigabit Ethernet port can be split to four 10-Gigabit Ethernet ports that can be configured to operate as 1-Gigabit Ethernet port. You must use 4x10GE LR breakout optics (QSFPP-4X10GE-LR) at the MX10008 or MX10016 end and 1-Gigabit Ethernet EX optics at the remote end. It is only optional to use Juniper optics (SFP-GE40KM) at the remote end, as any vendor's EX (not SX or LX) optics can be used. Refer to the Hardware Compatibility Tool (HCT) for the list of pluggable transceivers supported on the MX10008 router.

To configure the operating speed of the 10-Gbps port to 1-Gbps, use the speed statement at the [edit interfaces interfacename gigether-options] hierarchy level. After you commit the configuration, the operating speed of the 10-Gbps port changes to 1-Gbps speed without any MPC, PIC, or interface bounce. To view the speed configured on the interface, use the show interfaces extensive command. In the output, the Speed Configuration field displays the current operating speed of the interface. If the interface is configured with 1-Gbps speed, then the Speed Configuration field displays 1G; if the interface is configured with 10-Gbps speed, Speed Configuration displays AUTO. For more information, see speed.

When you use the show interfaces extensive command to view the speed of the interface, the output does not display support for auto-negotiation. However, autonegotiation is supported when the interface speed is configured for 1-Gbps speed.

Follow these guidelines when you configure the speed of the port:

• Each port on the MX10K-LC2101 MPC supports speeds of 10 Gbps (using breakout cables), 40 Gbps, and 100 Gbps. However, MX10K-LC2101 MPC does not support bandwidth oversubscription. So, when you configure the ports on all PICs, ensure that the demand on each Packet Forwarding Engine is less than or equal to its forwarding capacity. The default port speed for all PICs is 10G.
• When you change an existing port speed configuration at the port level, you must reset the PIC for the configuration to take effect. When you change an existing port speed configuration at the PIC level, the JNP10K-LC2101 automatically resets the PIC.
• When you change the number of active ports using the number-of-ports command, you must reset the PIC for the configuration to take effect. Interfaces are created only for active ports. Only the ports you configure are known as the active ports. The number of active ports enables you to handle bandwidth oversubscription. You cannot configure the number of active ports at the port level. If you attempt to do so, an error message is displayed.
• You cannot configure port speed at the PIC level and the port level simultaneously. Error messages are displayed when you try to commit such configurations.
• When you change an existing port speed configuration with an invalid port speed configuration, an alarm is generated indicating that the port speed configuration is invalid. The MPC continues to operate using the existing port speed configuration or the default port speed.

For information on how to configure the speed at the PIC level, see Table 2. For information on how to configure the speed at the port level, see Table 3.

Interface Naming Conventions for MX10K-LC2101

Table 75: Interface Naming Conventions (MX10K-LC2101)

Port Speed on MX10K-LC9600 Overview

For information on the line card, see MX Series 5G Universal Routing Platform Interface Module Reference.

To view the hardware compatibility matrix for optical interfaces, transceivers, and DACs, see Hardware Compatibility Tool (HCT).

For information on MX10K-LC9600, see Protocols and Application supported by the MX10K-LC9600.

Table 76 summarizes the software feature support of MX10K-LC9600.

Table 76: MX10K-LC9600 - Software Support and Description

Table 77 summarizes the supported port speeds on MX10K-LC9600.

Table 77: Port Speed for MX10K-LC9600

Follow these guidelines when you configure the speed of a port:

• If you do not configure the port speed at the PIC level using the pic-mode option, then the default port speed is 400 Gbps.

• When you change the speed at the PIC level, the PIC restarts automatically with the new configured speed.

• You cannot configure the port speed at the PIC level and the port level simultaneously. Error messages are displayed when you attempt to commit the configuration.

• When you change the port configuration at the port level, the interfaces corresponding to the affected port are deleted and then re-created.

• You can configure all the 4 ports in 400 Gbps at the same time.

• If you configure the port speed of a port on any PIC to 100 Gbps and then configure the port speed of port 0 of the same PIC to 400 Gbps, the port bounces back automatically. The 400-Gigabit Ethernet interface is created only after you manually restart the PIC.

• When you change an existing port speed configuration with an invalid port speed configuration, an alarm is generated indicating that the port speed configuration is invalid. The fpc continues to operate with the last available configuration. If the fpc is rebooted with Invalid configuration, the fpc move to the default mode.

For information on how to configure the speed at the PIC level, see Table 46. For information on how to configure the speed at the port level, see Table 47.

Table 78 lists the interface naming conventions for MX10K-LC9600.

Table 78: Interface Naming Convention for MX10K-LC9600

Port Speed on PTX10K-LC1201 Overview

For information on the line card, see PTX10K-LC1201-36D for PTX10008 Routers.

To view the supported transceivers, optical interfaces, and DAC cables on PTX10K-LC1201, see Hardware Compatibility Tool (HCT).

Table 79 summarizes the line card details and their description.

Table 79: PTX10K-LC1201 Software Support and Description

Table 80 summarizes the Packet Forwarding Engine mapping and the supported port speeds.

Table 80: Port Speed for PTX10K-LC1201

Starting in Junos OS Evolved Release 20.1R2 and 20.2R1, we now support a new port profile configuration to configure port speeds on the PTX10K-LC1201 line card. You can now configure the port speed on the PTX10K-LC1201 line card by using the port profile configuration commands in the [edit interfaces] hierarchy. To streamline the configuration, the new port profile configuration commands are migrated from the [edit chassis] hierarchy to the [edit interfaces] hierarchy for the PTX10K-LC1201 line card.

Starting in Junos OS Evolved Release 20.4R1, you can configure 10Gbps speed and select the wavelength with SFP+ optics by plugging in the QSA adapter on the QSFP/QSFP+ ports of PTX10K-LC1201 line card. You can now configure the 10Gbps speed by using the set interfaces et-// speed <10g> or set interfaces et-// speed <10g> number-of-sub-ports (1) commands. You can select the wavelength of the SFP+ ports by using the set interfaces et-//:channel number optics-options wavelength wavelength command and view the output using the show interfaces diagnostics optics name command.

Follow these guidelines when you configure the speed of a port:

• On non-channelized interfaces, the prefix et- is used irrespective of the speed configured. If you do not configure the speed, by using the optional speed command, default speed is assigned to the interface.

• On channelized interfaces, the prefix et- is used irrespective of the speed configured. All channelized interfaces have the same speed. You cannot configure an individual speed for each channelized interface. You can configure the number of channelized interfaces by using the number-of-sub-ports command.

• You can configure the active physical ports in a PIC. By default, all the physical ports in an interface are active. To control the number of interfaces created on a physical port in a PIC, use the unused command. If you configure a port as unused, no interfaces (channelized or non-channelized) are created for that port.

• When you change the speed of the port, or change the number-of-sub-ports per port, or configure or remove the number-of-sub-ports, the interfaces will be deleted and re-created for that port.

• If you have not configured the port profile for a specific port and the port is active, interfaces are created for the port with default speed based on the platform or FPC. You can control the number of interfaces created by using the unused command.

• Interfaces are created irrespective of the physical presence of optics. If the plugged in optics does not match the interface speed, the interfaces are marked down.

• You can configure port profiles in the command line interface without the physical presence of an FPC. If an invalid port profile configuration is detected while booting a FPC, an alarm is generated. Also, the default port profile is selected for that PIC. Also, if the port profile configuration is changed while the FPC is up and running, and the new configuration is invalid, an alarm is generated. The existing port profile configured continues to be used for that PIC.

For information about how to configure the speed of a port for a non-channelized interface using the new interfaces hierarchy, see Table 4. For information about how to configure the speed of a port for a channelized interface using the new interfaces hierarchy, see Table 5.

Interface Naming Conventions for PTX10K-LC1201

Table 81 lists the naming conventions used for interfaces on PTX10K-LC1201 for PTX10008 routers. PTX10008 routers support 8 PTX10K-LC1201 line cards.

Table 81: Interface Naming Convention for PTX10K-LC1201 line card

Port Speed on PTX10001-36MR Router Overview

For information on PTX10001-36MR hardware description, see PTX10001-36MR Packet Transport Router Hardware Guide.

To view the supported transceivers, optical interfaces, and DAC cables on PTX10001-36MR, see Hardware Compatibility Tool (HCT).

Table 82 provides the basic details of PTX10001-36MR router.

Table 82: PTX10001-36MR Router Details and Description

Table 83 shows the speed capability of various ports.

Table 83: Speed Capability of Ports

Table 84 summarizes the channelization and FEC support on 400- and 200-Gigabit Ethernet capable ports.

Table 84: Channelization and FEC support on 400- and 200-Gigabit Ethernet capable ports

Starting in Junos OS Evolved Release 20.3R1, you can configure the port speed on the PTX10001-36MR router by using the port profile configuration commands in the [edit interfaces] hierarchy. To streamline the configuration, the port profile configuration commands are migrated from the [edit chassis] hierarchy to the [edit interfaces] hierarchy for the PTX10001-36MR router.

From Junos OS Evolved Release 21.2R1, we support autonegotiation and linktraining using 400G DAC cable for PTX10001-36MR. This is not a default behavior. Use auto-negotiation under [edit interfaces interface-name ether-options] hierarchy level to enable autonegotiation and link training. Enabling autonegotiation automatically enables link training. This advertises configured speed on the interface hierarchy. It does not upgrade or downgrade speed based on peers advertised capability.

Autonegotiation and link training is supported only on the following channelization:

• One 400-Gigabit Ethernet interfaces (1x400G)
• Two 200-Gigabit Ethernet interfaces (2x200G)
• Four 100-Gigabit Ethernet interfaces (4x100G)

Configure speed at Port Level

To configure the PTX10001-36MR router at port level, follow the configuration steps in Table 3 in 20.2 releases. See speed for more details.

From Junos OS Evolved Release 20.3R1 you must use, set interfaces et-// speed <10g | 25g | 50g | 40g | 100g | 200g | 400g>, or set interfaces et-// speed <10g | 25g | 50g | 40g | 100g | 200g | 400g> number-of-sub-ports (1|2|4|8) commands to configure the speed on the ports.

You can configure port profiles in the command line interface without the physical presence of an FPC. If an invalid port profile configuration is detected while booting a FPC, an alarm is generated. Also, the default port profile is selected for that PIC.

If the port profile configuration is changed while the FPC is up and running, and the new configuration is invalid, an alarm is generated. The existing port profile configured continues to be used for that PIC.

You can configure any supported speed on 400-Gbps capable ports. Configuring speed on one of the 400-Gbps capable port will not disrupt the traffic on any other ports.

But, for 100-Gbps capable ports only speeds of 100-Gbps, 25-Gbps, 40-Gbps, and 10-Gbps are valid.

From Junos OS Evolved Release 20.3R1 you must use, the following command:

set interfaces et-// unused

If you configure Unused command for a physical port in a PIC, then no channelized and non-channelized interfaces will be created. See Unused for more information.

The Table 87 specifies which ports must be marked unused. If this rule is violated, then an alarm indicating port speed configuration error is raised. In such case, the existing running configuration will continue to be applied on such ports.

If the router reboots with such an invalid configuration, then the port with 40-Gbps, 4x10-Gbps, or 4x25-Gbps speed configuration and its counterpart port will not have any interfaces created for them.

Table 85 provides you the ports that you must power-off while configuring different speeds.

Table 85: Unused Port Settings

Note:

You can configure a port with more than one type of channelization mode for a given speed. For example, you can channelize a port to 1x100-Gbps, 2x100-Gbps, or 4x100-Gbps to configure the port to operate in 100-Gbps speed.

To specify which of these channelization modes the port should operate in, execute the following command:

set chassis fpc fpc-slot pic pic-slot port port-num number-of-sub-ports (1|2|4|8)

From Junos OS Evolved Release 20.3R1 to specify which of these channelization modes on the ports, you must execute the following command at the [edit interfaces] hierarchy:

set interfaces et-// speed <10g | 25g | 50g | 40g | 100g | 200g | 400g> number-of-sub-ports (1|2|4|8)

See number-of-sub-ports for information on how to operate at different channelized speed.

When the number-of-sub-ports are not specified, the number of channels are created as per Table 86: