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Configuring Rate Selectability

 

Use this topic for information about how to configure rate selectability on specific line cards. You can configure the speed of the port at the port level or at the PIC or MIC level.

Configuring Port Speed

Starting with Junos OS Release 15.1, some PICs support multiple port speeds. This procedure describes how to configure the port speed for these types of PICs.

To configure a PIC’s port speed:

  1. Navigate to the [edit chassis] hierarchy level.
  2. Enter the port-speed statement at the [edit chassis fpc slot-number pic pic-number port port-number] hierarchy level.
  3. Specify the port speed that needs to be configured. You can use one of the following speed attributes for this configuration.

See also

Configuring 400-Gigabit Ethernet Interfaces on PTX10003 Routers

PTX10003 routers (PTX10003-80C and PTX10003-160C) does not contain any pluggable PICs or TICs. You can directly plug-in the optics to the FPCs. Based on the optics, the interfaces are created with the respective interface naming conventions. The 40-Gigabit Ethernet, 100-Gigabit Ethernet, and 400-Gigabit Ethernet interfaces configured follow the naming convention et-fpc-slot/pic-slot/port-number. The 10-Gigabit Ethernet interfaces follow the naming convention et-fpc-slot/pic-slot/port-number:[logical-port-number].

Optic Device

Interface speed

Interface Naming Format

QSFP56-DD-400GBASE-LR8

1x400G

et-x/y/z

4x100G

et-x/y/z:0

et-x/y/z:1

et-x/y/z:2

et-x/y/z:3

Starting in Junos OS Evolved Release 19.3R1, you can configure 400-gigabit ethernet interfaces using QSFP56-DD-400GBASE-LR8 optics on PTX10003 routers. Only ports 0, 4, 5, 9 within each logical PIC support 400-Gigabit ethernet mode. When using 400G on port 0, the total bandwidth (speed x number-of-subports) of port 1 has to be less than 100G and port 2 has to configured as 'unused'. When using port 4 as 400G, port 3 has to be configured with total bandwidth and port 2 has to be configured 'unused'. Similarly, with port 5, 9 using 400G, port 6,8 respectively has to be configured for less than 100G and port 7 should be configured as 'unused'. That is, when a port is configured in 400-Gigabit ethernet mode, you cannot configure speed of the adjacent port to be more then 100-Gbps, and the middle port (2 between 0~4 or 7 between 5~9) must be set to unused. For example, you can set et-0/0/0 to 400G, et-0/0/1 to 100G or less, but et-0/0/2 must be set to unused.

To view the port panel information, refer to PTX10003 Port Panel.

For each PIC, maximum speed supported on the respective port is limited to:

Port Number

Speed

Port 0

400G

Port 1

100G

Port 2

Unused

Port 3

100G

Port 4

400G

Port 5

400G

Port 6

100G

Port 7

Unused

Port 8

100G

Port 9

400G

By default, the PIC comes up with default interfaces in 100-Gigabit ethernet mode. To configure 400-Gbps speed on PTX10003 routers (PTX10003-80C and PTX10003-160C):

  1. In configuration mode, navigate to the [edit chassis fpc fpc-slot pic pic-number] hierarchy level.

    For example:

  2. To configure 400-Gbps speed at the specific port, configure the speed statement for the desired ports.
    Note

    You can only configure 400-Gbps speed on ports 0, 4, 5, 9 within each logical PIC.

    For example:

  3. Since port 0 is configured to 400-Gbps speed, you can only configure et-0/0/1 to 100G or less, and et-0/0/2 to unused in the same logical PIC.

    For example:

  4. Commit your configuration changes.

    On successful commit, et-1/1/0 is created with 400-Gbps, et-1/1/1 is created with 100-Gbps speed, and no IFD will be created on port 2..

Configuring Rate Selectability on MIC-MRATE to Enable Different Port Speeds

Rate selectability enables you to configure the port speed either at the port level or at the MIC level. To configure all ports to operate at the same speed, you configure rate selectability at the MIC level, in which case you cannot configure the speed of individual ports. To configure rate selectability at the MIC level, use the pic-mode statement and specify the port speed. To configure different port speeds for each port, you configure rate selectability at the port level, in which case only the ports that are configured are enabled. To configure rate selectability at the port level, use the speed statement to specify the speed of individual ports. This topic describes how to configure port speeds at the port level and at the MIC level.

Note

The pic in the configuration commands refers to the MRATE MIC. To specify pic-number, specify the MRATE MIC slot. For instance, when you use the edit chassis fpc fpc-slot-number pic pic-slot-number statement, specify the MPC slot number and the MIC-MRATE slot number.

Configuring Rate Selectability on MIC-MRATE at MIC Level

To configure all ports to operate at the same speed, you configure rate selectability at the MIC level. The default port speed is 10 Gbps for all ports. When you configure rate selectability at the MIC level, all the ports of the MIC that support the configured speed operate at that speed. To prevent oversubscription and ensure a guaranteed bandwidth, you can specify the number of active ports that operate at the configured speed by using the number-of-ports number-of-active-physical-ports statement. MIC-MRATE supports port speeds of 10 Gbps, 40 Gbps, and 100 Gbps.

For MPC8E, you can only configure 4 ports of the 12 MIC-MRATE ports with 100 Gbps port speed and the other ports are disabled. So, if you configure 100G as the operating speed for ports 0, 1, 6, and 7, then the other ports are disabled on MPC8E. Similarly, when you configure the port speed as 100 Gbps at the MIC level on MPC9E, you can only configure 8 ports of the 12 MIC-MRATE ports to operate with that speed. So, if you configure 100G as the operating speed for ports 0, 1, 2, 3, 6, 7, 8, and 9, then the other ports are disabled on MPC9E. However, enabling port speed of 40 Gbps or 10 Gbps at the MIC level, enables all ports and sets the desired port speed on all ports.

To configure rate selectability at the MIC level:

  1. In configuration mode, navigate to the [edit chassis fpc fpc-slot pic pic-number] hierarchy level.

    For example:

  2. Configure the pic-mode pic-speed statement to set the operating speed for the MIC. All ports of the MIC that support the configured speed operate at the configured speed. Values for the pic-speed option include: 10G, 40G , and 100G.

    For example:

  3. (Optional) To prevent oversubscription, you can choose to configure the number of active ports that operate at the port speed configured in Step 2. For information about the number of active ports and specific port numbers on MPC7E-MRATE, MPC8E, and MPC9E see Supported Active Physical Ports for Configuring Rate Selectability to Prevent Oversubscription.

    For example:

  4. Verify the configuration.
  5. Commit your configuration changes.

In this example, you have configured 8 ports on MIC-MRATE with port speed of 10 Gbps. The other ports are disabled.

Configuring Rate Selectability on MIC-MRATE at Port Level

To configure different port speeds for each port, you configure rate selectability at the port level. Only the ports that are configured are enabled. Other ports are automatically disabled. Configuring rate selectability at the port level provides you the flexibility of operating individual ports of the MIC at different supported speeds. For example, on MPC9E with MIC-MRATE, you can configure four 100-Gigabit Ethernet interfaces on ports 0, 1, 6, and 7 and two 40-Gigabit Ethernet interfaces on ports 3 and 8. You can use breakout transceivers to configure each 40-Gigabit Ethernet interfaces as four 10-Gigabit Ethernet interfaces.

Note

When you change the port speed at the port level, you must reset the MIC for the configuration to take effect. To reset the MIC, 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. Alternatively, you can also restart the MPCs. However, MPC restart takes longer as it affects all the PFEs. An alarm is generated indicating the change in port speed. For guidelines on configuring rate selectability, see Guidelines for Configuring Rate Selectability.

To configure rate selectability at the port level:

  1. In configuration mode, navigate to the [edit chassis fpc fpc-slot pic pic-number] hierarchy level.

    For example:

  2. To indicate the speed at which the ports operate, configure the speed statement for the desired ports. According to your requirements, you can choose the 10G, 40G, or 100G speed options.

    For example:

    Note

    All the twelve ports of MIC-MRATE support 10-Gbps and 40-Gbps port speeds. On MPC8E with MIC-MRATE, you can configure 4 ports out of the twelve MIC-MRATE ports with a port speed of 100 Gbps. On MPC9E with MIC-MRATE, you can configure 8 ports out of the twelve MIC-MRATE ports with a port speed of 100 Gbps.

  3. Verify the configuration.
  4. Commit your configuration changes.

In this example, you have configured 4 ports on MIC-MRATE with port speed of 100 Gbps and 2 ports with port speed of 40 Gbps. The total capacity per MIC, based on this configuration, is 480 Gbps. MIC-MRATE has two Packet Forwarding Engines. The forwarding capacity for each Packet Forwarding Engine is 400 Gbps for MPC9E and 240 Gbps for MPC8E. The configured value does not exceed the forwarding capacity and so is a valid configuration.

Configuring Rate Selectability on MPC7E (Multi-Rate) to Enable Different Port Speeds

Each of the six ports of PIC 0 and PIC 1 of an MPC7E-MRATE MPC supports port speeds of 10 Gbps and 40 Gbps. However, only ports 2 and 5 of both the PICs support port speed of 100 Gbps. Because the MPC7E-MRATE MPC is rate-selectable, you can choose to configure all supported ports of the MPC to operate at the same supported speed or configure all the ports at different supported speeds.

You configure rate selectability at the PIC level if you intend to operate all the ports of the MPC7E-MRATE MPC at the same speed. That is, you can choose to configure the PIC to operate at a supported speed, and then all the supported ports of the PIC operate at the configured speed. For example, if you choose to configure PIC 0 at 100-Gbps speed, only ports 2 and 5 of PIC 0 operate at 100-Gbps speed, while the other ports of the PIC are disabled. Similarly, if you choose to configure PIC 0 at 10-Gbps or 40-Gbps speed, all the ports of the PIC are enabled to operate at those speeds. Additionally, you can prevent oversubscription by specifying the number of active physical ports that operate at 10-Gbps, 40-Gbps, and 100-Gbps speeds.

You configure rate selectability at the port level if you intend to operate different ports of the MPC7E-MRATE MPC at different supported speeds. That is, you configure each port to operate at a supported speed.

Note

The MPC7E-MRATE MPC supports an aggregate bandwidth of 480 Gbps, and each of the two PICs supports a bandwidth limit of 240 Gbps. If the aggregate port capacity configured exceeds 240 Gbps per PIC, the configuration is not supported.

Configuring Rate Selectability at PIC Level

To configure rate selectability at the PIC level:

  1. In configuration mode, navigate to the [edit chassis fpc fpc-slot pic pic-number] hierarchy level.

    For example:

  2. Configure the pic-mode statement to set the operating speed for the PIC's ports. According to your requirements, you can choose from the options 10G, 40G , or 100G.

    For example:

  3. (Optional) To prevent oversubscription, you can choose to configure the number of ports that operate at the mode configured in Step 2.

    For example:

  4. Verify the configuration.
  5. Commit your configuration changes.

If the number-of-ports statement is not configured, all the ports that support the speed configured in Step 2 are enabled. That is, depending on that selection, ports 0 through 5 are enabled for speeds of 10-gigabit or 40-gigabit, while ports 2 and 5 are enabled for 100-gigabit. Table 1 lists the physical ports that are enabled when the number-of-ports statement is configured.

Table 1: Active Physical Ports on MPC7E-MRATE MPC Based on the number-of-ports Configuration

Ports Configured (number-of-ports Statement)

Active Physical Ports for Different Configured Speeds

10-Gigabit

40-Gigabit

100-Gigabit

1

0

0

2

2

0, 1

0, 1

2, 5

3

0, 1, 2

0, 1, 2

2, 5

4

0, 1, 2, 3

0, 1, 2, 3

2, 5

5

0, 1, 2, 3, 4

0, 1, 2, 3, 4

2, 5

6

0, 1, 2, 3, 4, 5

0, 1, 2, 3, 4, 5

2, 5

Configuring Rate Selectability at Port Level

To configure rate selectability at the port level:

  1. In configuration mode, navigate to the [edit chassis fpc fpc-slot pic pic-number] hierarchy level.

    For example:

  2. To indicate the speed at which the ports operate, configure the speed statement for the desired ports. According to your requirements, you can choose the 10g, 40g, or 100g speed options.

    For example:

    Note

    All the six ports of PIC 0 and PIC 1 of an MPC7E-MRATE MPC support 10-Gbps and 40-Gbps port speeds. However, only ports 2 and 5 of both the PICs support 100-Gbps speed.

  3. Verify the configuration.
  4. Commit your configuration changes.
Note

Note the following when configuring rate selectability on an MPC7E-MRATE MPC:

  • If rate selectability is not configured, all ports of the MPC7E-MRATE MPC operate as four 10-Gigabit Ethernet interfaces by default. Therefore, when booting the MPC:

    • If rate selectability is not configured or if invalid port speeds are configured, each port operates as four 10-Gigabit Ethernet interfaces. An alarm is generated to indicate that the ports of the MPC7E-MRATE MPC are operating as four 10-Gigabit Ethernet interfaces.

    • If valid port speeds are configured, the MPC PICs operate at the configured speed.

  • When you change an existing port speed configuration, you must reset the MPC for the configuration to take effect. Because resetting the MPC takes several minutes and as it affects all the Packet Forwarding Engines, you can choose to use the request chassis pic pic-slot pic-slot-number fpc-slot fpc-slot-number (online | offline) command to apply your configuration changes quickly. 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. The MPC continues to operate using the previously configured valid port speed configuration. However, if the MPC or PIC is restarted with the committed invalid port configuration, all ports of the MPC operate as four 10-Gigabit Ethernet interfaces by default.

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

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

  • Logical interfaces can be created only on ports that are enabled.

Configuring Rate Selectability on MX10003 MPC to Enable Different Port Speeds

Rate selectability enables you to configure the port speed either at the port level or at the MIC level. To configure all ports to operate at the same speed, configure rate selectability at the MIC level, in which case you cannot configure the speed of individual ports. To configure rate selectability at the MIC level, use the pic-mode statement and specify the port speed. To configure different port speeds for each port, configure rate selectability at the port level, in which case only the ports that are configured are enabled. To configure rate selectability at the port level, use the speed statement to specify the speed of individual ports. This topic describes how to configure port speeds at the port level and at the MIC or PIC level.

Note

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.

Configuring Rate Selectability on MX10003 MPC at MIC/PIC Level

To configure all ports to operate at the same speed, configure rate selectability at the MIC or PIC level. When you configure rate selectability at the MIC or PIC level, all the ports of the MIC that support the configured speed operate at that speed. To prevent oversubscription and to ensure a guaranteed bandwidth, specify the number of active ports that operate at the configured speed by using the number-of-ports number-of-active-physical-ports statement. The MX10003 MPC supports port speeds of 10 Gbps, 40 Gbps, and 100 Gbps.

To configure rate selectability at the MIC/PIC level:

  1. In configuration mode, navigate to the [edit chassis fpc fpc-slot pic pic-number] hierarchy level.

    For example:

  2. Configure the pic-mode pic-speed statement to set the operating speed for the MIC. All ports of the MIC that support the configured speed operate at the configured speed. Values for the pic-speed option are 10G, 40G, and 100G.

    For example:

  3. (Optional) To prevent oversubscription, you can choose to configure the number of active ports that operate at the port speed configured in Step 2. For information about the number of active ports and specific port numbers on the MX10003 MPC , see Supported Active Physical Ports for Configuring Rate Selectability to Prevent Oversubscription on MX10003 MPC.

    For example:

  4. Verify the configuration.
  5. Commit your configuration changes.

In this example, you have configured 8 ports on the MPC with port speed of 10 Gbps. The other ports are disabled.

Configuring Rate Selectability on MX10003 MPC at Port Level

To configure different port speeds for each port, you configure rate selectability at the port level. Only the ports that are configured are enabled. Other ports are automatically disabled. Configuring rate selectability at the port level provides you the flexibility of operating individual ports of the PIC at different supported speeds.

If you want to configure a port speed of 40 Gbps on the MIC and the fixed-port PIC, you can choose any of the following example configurations:

  • Configure one port of the fixed-port PIC as a 40-Gigabit Ethernet interface and three ports of the MIC as 40-Gigabit Ethernet interfaces.

  • Configure two ports of the fixed-port PIC as 40-Gigabit Ethernet interfaces and three ports of the MIC as 40-Gigabit Ethernet interfaces.

  • Configure three ports of the MIC as 40-Gigabit Ethernet interfaces and two ports of the fixed-port PIC as 40-Gigabit Ethernet interfaces.

  • Configure four ports of the MIC as 40-Gigabit Ethernet interfaces only.

Note

While configuring rate selectability, when you switch to PIC mode from port mode or vice-versa, the PIC is reset automatically. However, when you change the port speed at the port level, the PIC has to be reset by executing the request chassis pic pic-slot mic-slot-number fpc-slot fpc-slot-number (offline | online) command. For guidelines on configuring rate selectability, see Guidelines for Configuring Rate Selectability.

To configure rate selectability at the port level:

  1. In configuration mode, navigate to the [edit chassis fpc fpc-slot pic pic-number] hierarchy level.

    For example:

  2. To indicate the speed at which the ports operate, configure the speed statement for the desired ports. According to your requirements, you can choose the 10G, 40G, and 100G speed options.

    For example:

  3. Verify the configuration.
  4. Commit your configuration changes.

In this example, you have configured 2 ports with port speed of 10 Gbps and 1 port with port speed of 40 Gbps.

Note

Starting in Junos OS Release 18.1R1, the 10-Gbps port can operate in 1-Gbps mode also using the speed (Gigabit Ethernet interface) configuration statement at Gigabit Ethernet interface level. Refer to MX10003 MPC Rate-Selectability Overview for more details.

Configuring Rate Selectability on MX204 to Enable Different Port Speeds

Rate selectability enables you to configure the port speed either at the port level or at the PIC level. To configure all ports to operate at the same speed, configure rate selectability at the PIC level, in which case you cannot configure the speed of individual ports. To configure rate selectability at the PIC level, use the pic-mode statement and specify the port speed. To configure different port speeds for each port, configure rate selectability at the port level, in which case only the ports that are configured are enabled. To configure rate selectability at the port level, use the speed statement to specify the speed of individual ports. This topic describes how to configure port speeds at the port level and at the PIC level.

Note the following caveats while configuring rate selectability on the MX204 routers:

  • 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.

  • If rate selectability is not configured, all ports of the MX204 router operate as 10-Gigabit Ethernet interfaces.

  • 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. For more information, see MX204 Router Rate-Selectability Overview.

  • The heterogeneous mode is supported only on port mode.

  • When you configure rate selectability 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 rate selectability at the PIC level and the port level simultaneously. Error messages are displayed when you try to commit such configurations.

Configuring Rate Selectability on MX204 at PIC Level

To configure all ports to operate at the same speed, you configure rate selectability at the PIC level. When you configure rate selectability at the PIC level, all the ports of the PIC that support the configured speed operate at that speed. To prevent oversubscription and ensure a guaranteed bandwidth, you can specify the number of active ports that operate at the configured speed by using the number-of-ports number-of-active-physical-ports statement. The MX204 has four rate-selectable ports (referred to a PIC 0 ports) that can be configured as 100-Gigabit Ethernet ports or 40-Gigabit Ethernet port, or each port can be configured as four 10-Gigabit Ethernet ports (by using a breakout cable). The MX204 also has eight 10-Gigabit Ethernet ports (referred to as PIC 1 ports).

To configure rate selectability at the PIC level:

  1. In configuration mode, navigate to the [edit chassis fpc fpc-slot pic pic-number] hierarchy level.

    For example:

  2. Configure the pic-mode pic-speed statement to set the operating speed for the PIC. All ports of the PIC that support the configured speed operate at the configured speed. Values for the pic-speed option are 10G, 40G , and 100G.

    For example:

  3. (Optional) To prevent oversubscription, you can choose to configure the number of active ports that operate at the port speed configured in Step 2. For information about the number of active ports and specific port numbers on the MX204 routers see Supported Active Physical Rate-Selectable Ports to Prevent Oversubscription on MX204 Router.

    For example:

  4. Verify the configuration.
  5. Commit your configuration changes.

In this example, you have configured 4 ports on the PIC0 with port speed of 10 Gbps.

Configuring Rate Selectability on MX204 at Port Level

To configure different port speeds for each port, you configure rate selectability at the port level. Only the ports that are configured are enabled. Other ports are automatically disabled. Configuring rate selectability at the port level provides you the flexibility of operating individual ports of the PIC at different supported speeds.

Note

When you change the port speed at the port level, you must reset the PIC for the configuration to take effect. Resetting the PIC takes several minutes and affects all the Packet Forwarding Engines. To avoid this, use the request chassis pic pic-slot mic-slot-number fpc-slot fpc-slot-number (offline | online) command to reset the PIC and apply your configuration changes. An alarm is generated indicating the change in port speed. For guidelines on configuring rate selectability, see Guidelines for Configuring Rate Selectability.

To configure rate selectability at the port level:

  1. In configuration mode, navigate to the [edit chassis fpc fpc-slot pic pic-number] hierarchy level.

    For example:

  2. To indicate the speed at which the ports operate, configure the speed statement for the desired ports. According to your requirements, you can choose the 10G, 40G, or 100G speed options.

    For example:

  3. Verify the configuration.
  4. Commit your configuration changes.

In this example, you have configured 2 ports on the PIC0 with port speed of 40 Gbps, 1 port with port speed of 10 Gbps, and 1 port with port speed of 100 Gbps.

Note

Starting in Junos OS Release 18.1R1, the 10-Gbps port can operate in 1-Gbps mode also using the speed (Gigabit Ethernet interface) configuration statement at Gigabit Ethernet interface level. Refer to MX10003 MPC Rate-Selectability Overview for more details.

Configuring Rate Selectability on JNP10K-2101 MPC to Enable Different Port Speeds

Rate selectability enables you to configure the port speed either at the port level or at the PIC level. To configure all ports to operate at the same speed, configure rate selectability at the PIC level, in which case you cannot configure the speed of individual ports. To configure rate selectability at the PIC level, use the pic-mode statement and specify the port speed. To configure different port speeds for each port, configure rate selectability at the port level, in which case only the ports that are configured are enabled. To configure rate selectability at the port level, use the speed statement to specify the speed of individual ports. This topic describes how to configure port speeds at the port level and at the PIC level.

Configuring Rate Selectability on JNP10K-2101 MPC at PIC Level

To configure all ports to operate at the same speed, configure rate selectability at the PIC level. When you configure rate selectability at the PIC level, all the ports of the PIC that support the configured speed operate at that speed. To prevent oversubscription and to ensure a guaranteed bandwidth, specify the number of active ports that operate at the configured speed by using the number-of-ports number-of-active-physical-ports statement. The JNP10K-LC2101 MPC supports port speeds of 10 Gbps, 40 Gbps, and 100 Gbps.

To configure rate selectability at the PIC level:

  1. In configuration mode, navigate to the [edit chassis fpc fpc-slot pic pic-number] hierarchy level.

    For example:

  2. Configure the pic-mode pic-speed statement to set the operating speed for the PIC. All ports of the PIC that support the configured speed operate at the configured speed. Values for the pic-speed option are 10G, 40G, and 100G.Note

    When you configure the pic-mode as 100 Gbps and the Packet Forwarding Engine bandwidth is 240 Gbps, only the first two ports support 100 Gbps. The other ports are disabled.

    For example:

  3. (Optional) To prevent oversubscription, you can choose to configure the number of active ports that operate at the port speed configured in Step 2.

    For example:

  4. Verify the configuration.
  5. Commit your configuration changes.

In this example, you have configured 2 ports on the MPC with port speed of 10 Gbps. The other ports are disabled.

Configuring Rate Selectability on JNP10K-LC2101 MPC at Port Level

To configure different port speeds for each port, you configure rate selectability at the port level. Only the ports that are configured are enabled. Other ports are automatically disabled. Configuring rate selectability at the port level provides you the flexibility of operating individual ports of the PIC at different supported speeds.

Note

While configuring rate selectability, when you switch to PIC mode from port mode or vice-versa, the PIC is reset automatically. However, when you change the port speed at the port level, the PIC has to be reset by executing the request chassis pic pic-slot mic-slot-number fpc-slot fpc-slot-number (offline | online) command. For guidelines on configuring rate selectability for JNp10K-LC2101, see Guidelines for Configuring Rate Selectability.

To configure rate selectability at the port level:

  1. In configuration mode, navigate to the [edit chassis fpc fpc-slot pic pic-number] hierarchy level.

    For example:

  2. To indicate the speed at which the ports operate, configure the speed statement for the desired ports. According to your requirements, you can choose the 10G, 40G, and 100G speed options.Note

    If you configure the speed as 100 Gbps for 3 ports and the Packet Forwarding Engine bandwidth is 240 Gbps, an alarm is raised as it is an invalid configuration. The value of only the first two ports support 100 Gbps. The other ports are disabled.

    For example:

  3. Verify the configuration.
  4. Commit your configuration changes.

In this example, you have configured 2 ports with port speed of 10 Gbps and 1 port with port speed of 40 Gbps.

Configuring Rate Selectability on MPC10E-15C-MRATE to Enable Different Port Speeds

Rate selectability enables you to configure the port speed either at the port level or at the PIC level:

  • To configure all ports to operate at the same speed, configure rate selectability at the PIC level, in which case you cannot configure the speed of individual ports. To configure rate selectability at the PIC level, use the pic-mode statement and specify the port speed.

  • To configure different port speeds for each port in a PIC, configure rate selectability at the port level, in which case only the ports that are configured are created. To configure rate selectability at the port level, use the speed statement to specify the speed of individual ports.

  • (Channelized mode) To specify the number of IFDs (or interfaces) that need to be created on a physical port for a specified speed, use the number-of-sub-ports<number-of-sub-ports> configuration statement. For example, on a given port that supports 4x10GE mode, if the number-of-sub-ports to 2, then two IFDs are created, namely xe-x/y/z:0 and xe-x/y/z:1.

    The number-of-sub-ports configuration statement can be used with rate selectability configuration at both PIC level and port level. The number-of-sub-ports configuration statement is effective only when the port speed is 10-Gbps. By default, four channels (or IFDs) is created for the 10-Gbps ports.

This topic describes how to configure port speeds at the port level and at the PIC level.

Configuring Rate Selectability on MPC10E-15C-MRATE at PIC Level

To configure all ports to operate at the same speed, configure rate selectability at the PIC level. When you configure rate selectability at the PIC level, all the ports of the PIC that support the configured speed operate at that speed. To prevent oversubscription and to ensure a guaranteed bandwidth, specify the number of active ports that operate at the configured speed by using the number-of-ports number-of-active-physical-ports statement. The MPC10E-15C-MRATE MPC supports port speeds of 10 Gbps, 40 Gbps, and 100 Gbps.

To configure rate selectability at the PIC level:

  1. In configuration mode, navigate to the [edit chassis fpc fpc-slot pic pic-number] hierarchy level.

    For example:

  2. Configure the pic-mode pic-speed statement to set the operating speed for the PIC. All ports of the PIC that support the configured speed operate at the configured speed. Values for the pic-speed option are 10G, 40G, and 100G.

    For example:

  3. (Optional) To prevent oversubscription, you can choose to configure the number of active ports that operate at the port speed configured in Step 2. For information about the number of active ports and specific port numbers on the MPC10E-15C-MRATE MPC, see Supported Active Physical Ports for Rate Selectability to Prevent Oversubscription on MPC10E-15C-MRATE.

    For example:

  4. Verify the configuration.
  5. Commit your configuration changes.

In this example, you have configured four ports on the MPC with port speed of 10 Gbps. The other ports are disabled.

Configuring Rate Selectability on MPC10E-15C-MRATE at Port Level

To configure different port speeds for each port, you configure rate selectability at the port level. Only the configured ports are enabled. Other ports are automatically disabled. Configuring rate selectability at the port level provides you the flexibility of operating individual ports of the PIC at different supported speeds.

Note

While configuring rate selectability, when you switch to PIC mode from port mode or vice-versa, the PIC is reset automatically. For guidelines on configuring rate selectability, see Guidelines for Configuring Rate Selectability.

To configure rate selectability at the port level:

  1. In configuration mode, navigate to the [edit chassis fpc fpc-slot pic pic-number] hierarchy level.

    For example:

  2. To indicate the speed at which the ports operate, configure the speed statement for the desired ports. According to your requirements, you can choose the 10G, 40G, and 100G speed options.

    For example:

  3. Verify the configuration.
  4. Commit your configuration changes.

In this example, you have configured two ports with port speed of 10 Gbps and one port with port speed of 40 Gbps.

Configuring Rate Selectability on MPC10E-10C-MRATE to Enable Different Port Speeds

Rate selectability enables you to configure the port speed either at the port level or at the PIC level:

  • To configure all ports to operate at the same speed, configure rate selectability at the PIC level, in which case you cannot configure the speed of individual ports. To configure rate selectability at the PIC level, use the pic-mode statement and specify the port speed.

  • To configure different port speeds for each port in a PIC, configure rate selectability at the port level, in which case only the ports that are configured are created. To configure rate selectability at the port level, use the speed statement to specify the speed of individual ports.

  • (Channelized mode) To specify the number of IFDs (or interfaces) that need to be created on a physical port for a specified speed, use the number-of-sub-ports<number-of-sub-ports> configuration statement. For example, on a given port that supports 4x10GE mode, if the number-of-sub-ports to 2, then two IFDs are created, namely xe-x/y/z:0 and xe-x/y/z:1.

    The number-of-sub-ports configuration statement can be used with rate selectability configuration at both PIC level and port level. The number-of-sub-ports configuration statement is effective only when the port speed is 10-Gbps. By default, four channels (or IFDs) is created for the 10-Gbps ports.

This topic describes how to configure port speeds at the port level and at the PIC level.

Configuring Rate Selectability on MPC10E-10C-MRATE at PIC Level

To configure all ports to operate at the same speed, configure rate selectability at the PIC level. When you configure rate selectability at the PIC level, all the ports of the PIC that support the configured speed operate at that speed. To prevent oversubscription and to ensure a guaranteed bandwidth, specify the number of active ports that operate at the configured speed by using the number-of-ports number-of-active-physical-ports statement. The MPC10E-10C-MRATE MPC supports port speeds of 10 Gbps, 40 Gbps, and 100 Gbps.

To configure rate selectability at the PIC level:

  1. In configuration mode, navigate to the [edit chassis fpc fpc-slot pic pic-number] hierarchy level.

    For example:

  2. Configure the pic-mode pic-speed statement to set the operating speed for the PIC. All ports of the PIC that support the configured speed operate at the configured speed. Values for the pic-speed option are 10G, 40G, and 100G.

    For example:

  3. (Optional) To prevent oversubscription, you can choose to configure the number of active ports that operate at the port speed configured in Step 2. For information about the number of active ports and specific port numbers on the MPC10E-10C-MRATE MPC, see Supported Active Physical Ports for Rate Selectability to Prevent Oversubscription on MPC10E-10C-MRATE.

    For example:

  4. Verify the configuration.
  5. Commit your configuration changes.

In this example, you have configured four ports on the MPC with port speed of 10 Gbps. The other ports are disabled.

Configuring Rate Selectability on MPC10E-10C-MRATE at Port Level

To configure different port speeds for each port, you configure rate selectability at the port level. Only the configured ports are enabled. Other ports are automatically disabled. Configuring rate selectability at the port level provides you the flexibility of operating individual ports of the PIC at different supported speeds.

Note

While configuring rate selectability, when you switch to PIC mode from port mode or vice-versa, the PIC is reset automatically. For guidelines on configuring rate selectability, see Guidelines for Configuring Rate Selectability.

To configure rate selectability at the port level:

  1. In configuration mode, navigate to the [edit chassis fpc fpc-slot pic pic-number] hierarchy level.

    For example:

  2. To indicate the speed at which the ports operate, configure the speed statement for the desired ports. According to your requirements, you can choose the 10G, 40G, and 100G speed options.

    For example:

  3. Verify the configuration.
  4. Commit your configuration changes.

In this example, you have configured two ports with port speed of 10 Gbps and one port with port speed of 40 Gbps.

Configure Rate Selectability on ACX5448-D and ACX5448-M Routers

To configure speeds on different ports, you configure rate selectability at the port level. Configuring rate selectability at the port level provides you the flexibility of operating individual ports of a PIC at different supported speeds. The ACX5448-D router contains 36 SFP+ ports (0 through 35), two 100-Gigabit Ethernet QSFP28 ports (36 and 37), and two CFP2-DCO ports (38 and 39). When you start up the ACX5448-D router, the two Ethernet interfaces on port 36 are disabled by default. The ACX5448-M router contains 44 SFP+ ports (port 043 on PIC 0) and 6 QSFP28 ports (ports 0-5 on PIC 1).

This topic describes how to configure speeds at the port level. The ACX5448-D supports port speeds of 10-Gbps, 25-Gbps, 40-Gbps, and 100-Gbps.

To configure rate selectability at the port level on ACX5448-D:

  1. In configuration mode, navigate to the [edit chassis fpc fpc-slot pic pic-number ] hierarchy level.

    For example:

  2. To indicate the speed at which the ports operate, configure the speed statement for the specified ports. We know that the ports on PIC 1 support speeds of 10 Gbps, 25 Gbps, 40 Gbps, and 100 Gbps. According to your requirement, you can choose any of the speed options.

    For example:

  3. Verify the configuration.
  4. Commit your configuration changes.

In this example, you have configured 25-Gbps speed on one port and 10-Gbps speed on another on the ACX5448-D router.

Channelize Interfaces on ACX5448-D and ACX5448-M Routers

The ACX5448 router has two SKUs, ACX5448-D and ACX5448-M. The ACX5448-D router has 40 network ports, categorized as 36 SFP+/SFP ports, 2 QSFP28 ports, and 2 CFP2-DCO ports. You can configure 36 ports (ports 035) as 1-Gigabit or 10-Gigabit Ethernet interfaces. The QSFP28 ports (ports 36 and 37) support 100-Gbps and 40-Gbps speeds; you can channelize these ports into four 25-Gigabit or four 10-Gigabit Ethernet interfaces, respectively, using the set chassis fpc fpc slot pic pic slot port port-number speed speed command. Each of the CFP2-DCO ports (ports 38 and 39) supports up to 200-Gbps speed.

In the Junos OS CLI, we have mapped the ports on the ACX5448-D to logical PICs in the following manner:

  • Ports 0 through 35 (with the xe- interface type)represent PIC 0.

  • Ports 36 and 37 (with the et- interface type)represent PIC 1.

  • Ports 38 and 39 (with the ot- interface type) represent PIC 2.

On the ACX5448-M router, has a total of 50 network ports, categorized as 44 SFP+ and 6 QFSP28 ports. You can configure 44 ports (port 043 on PIC 0) as 1-Gigabit or 10-Gigabit Ethernet interfaces. The QSFP28 ports (ports 0-5 on PIC 1) support 100-Gbps and 40-Gbps speeds; you can channelize these ports into four 25-Gigabit Ethernet or four 10-Gigabit Ethernet interfaces, respectively, using the set chassis fpc fpc slot pic pic slot port port-number speed speed command. By default, each of the QSFP28 ports (ports 0-5) supports 100-Gbps speed.

In the Junos OS CLI, we have mapped the ports on the ACX5448-M to logical PICs in the following manner:

  • Ports 0 through 43 mapped to PIC 0 (interfaces xe-0/0/0 through xe-/0/0/43).

  • Ports 44 through 49 mapped to PIC 1(interfaces et-0/0/0 through et-/0/0/5).

All the channelized interfaces in a port use the format fpc/pic/port:channel-number—where channel-number can be a value from 0 through 3—and have the same port properties. By default, the port speed is 100-Gbps on PIC 1 (ports 36 and 37).

When you start up the router, the et-0/1/0 interface on port 36 is not created by default. However, the interface et-0/2/0 (on port 38) is always available. You can enable the et-0/1/0 interface (on port 36) by configuring the set chassis fpc 0 cfp-to-et command and restarting the FPC by executing the restart chassis-control command. (This configuration deletes the interface et-0/2/1 on port 38.)

As the default speed is 100-Gbps, we must first change the speed to 40-Gbps, and then channelize that port into four 10-Gbps interfaces. To channelize the ports, manually configure the port speed using the set chassis fpc slot-number pic pic-number port port-number speed speed command where the speed can be set to 4x10-Gbps or 4x25-Gbps.

To channelize an individual port:

  1. To configure an individual 100-Gigabit Ethernet (et-) port to operate as four 25-Gbps interfaces, specify the port number and speed:

    For example, to configure port 1 (et-0/1/1 interface) to operate as four 25-Gbps interfaces:

  2. Review your configuration and issue the commit command.
  3. To revert the four 25-Gbps channelized interfaces to operate as a single default 100-GBps interface, delete the speed statement:

    For example, to return port 1 from the 25-Gigabit Ethernet configuration to the default 100-Gigabit Ethernet configuration:

  4. Review your configuration and issue the commit command.

See also

Release History Table
Release
Description
Starting with Junos OS Release 15.1, some PICs support multiple port speeds.