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Related Documentation

Configuring Rate Selectability on an EX9200-12QS Line Card to Enable Different Port Speeds

Each of the six ports of PIC 0 and PIC 1 of an EX9200-12QS line card supports port speeds of 10 Gbps and 40 Gbps. Ports 2 and 5 of both the PICs also support port speed of 100 Gbps. Because the EX9200-12QS line card is rate-selectable, you can choose to configure all ports of each PIC to operate at the same supported speed or configure the ports of a PIC to operate at different supported speeds.

You configure rate selectability at the PIC level if you want all the ports of a PIC to operate at the same speed. That is, you can choose to configure a PIC to operate at a supported speed. For example, if you configure PIC 0 at 10-Gbps or 40-Gbps speed, all the ports of PIC 0 are enabled to operate at those speeds. If you configure PIC 0 at 100-Gbps speed, port 2 and port 5 are enabled to operate at 100-Gbps speed, and the other ports of PIC 0 are disabled.

You configure rate selectability on each port of a PIC if you want to operate different ports of the line card at different supported speeds. That is, you can configure each port to operate at a specified, supported speed.

Configuring Rate Selectability at the 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.
    [edit ]user@host# edit chassis fpc fpc-slot pic pic-number

    For example:

    [edit ]user@host# edit chassis fpc 4 pic 0
  2. Configure the pic-mode statement to set the operating speed for the ports of a PIC. You can choose from the options 10G, 40G, or 100G.
    [edit chassis fpc fpc-slot pic pic-number]user@host# set pic-mode pic-speed

    For example:

    [edit chassis fpc 4 pic 0]user@host# set pic-mode 10G
  3. (Optional) To prevent oversubscription, you can choose to configure the number of ports that operate at the speed configured in Step 2.
    [edit chassis fpc fpc-slot pic pic-number]user@host# set number-of-ports number-of-active-physical-ports

    For example, to specify that six ports on PIC 0 operate at the speed specified in Step 2:

    [edit chassis fpc 4 pic 0]user@host# set number-of-ports 6
  4. Verify the configuration.
    [edit chassis fpc 4 pic 0]
    user@host# show 
    pic-mode 10G;
    number-of-ports 6;
  5. Commit your configuration changes.
  6. Reset the PIC.

If the number-of-ports statement is not configured, all the ports that support the speed configured in Step 2 are enabled and the others are disabled. That is, the ports are enabled depending on whether or not they support the speed specified. Ports 0 through 5 are enabled if the speed specified is 10 Gbps or 40 Gbps; and ports 2 and 5 are enabled and the other ports of the PIC disabled if the speed specified is 100 Gbps. Table 3 lists the physical ports that are enabled when the number-of-ports statement is configured.

Table 3: Active Physical Ports on EX9200-12QS Line Card 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 the 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.
    [edit ]user@host# edit chassis fpc fpc-slot pic pic-number

    For example:

    [edit ]user@host# edit chassis fpc 4 pic 0
  2. To indicate the speed at which the ports operate, configure the speed statement for specific ports. The available options are 10g, 40g, and 100g.
    [edit chassis fpc fpc-slot pic pic-number]user@host# set port port-number speed (10g | 40g | 100g)

    For example:

    [edit chassis fpc 4 pic 0]user@host# set port 0 speed 10guser@host# set port 1 speed 10guser@host# set port 2 speed 100guser@host# set port 3 speed 40g

    Note: All the six ports of PIC 0 and PIC 1 of an EX9200-12QS 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.
    [edit chassis fpc 4 pic 0]
    user@host# show 
    port 0 {
        speed 10g;
    }
    port 1 {
        speed 10g;
    }
    port 2 {
        speed 100g;
    }
    port 3 {
        speed 40g;
    }
    
  4. Commit your configuration changes.
  5. Reset the PIC.

Note:

Note the following when you configure rate selectability on an EX9200-12QS line card:

  • When you boot the line card:
    • If rate selectability is not configured, all ports of the line card operate at the default speed as four 10-Gigabit Ethernet interfaces.
    • If rate selectability is configured with invalid port speeds, all ports for which invalid speeds were configured operate at the default speed.
    • If valid port speeds are configured, the ports operate at the configured speeds.
  • When you change an existing port-speed configuration, for the configuration to take effect, you must do either of the following:
    • Reset the PICs to which the configured ports belong, by using the request chassis pic pic-slot pic-slot-number fpc-slot fpc-slot-number (online | offline) command. Because resetting the line card takes several minutes and because it affects all the Packet Forwarding Engines, use this command to apply your configuration changes quickly.
    • Reset the line card

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

  • When you change an existing port-speed configuration to an invalid port-speed configuration and commit the configuration, an alarm is generated indicating that the port-speed configuration is invalid. The port continues to operate at the existing port speed.
  • 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.
  • If you configure rate selectability at the port level, logical interfaces are created only on the configured ports. No logical interfaces are created on the other ports.

Related Documentation

Modified: 2016-08-25