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Configuring Interfaces for Uplink Failure Detection

You can configure uplink failure detection to help ensure balanced traffic flow. Using this feature, switches can monitor and detect link failure on uplink interfaces and can propagate the failure information to downlink interfaces, so that servers connected to those downlinks can switch over to secondary interfaces.

Follow these configuration guidelines:

  • Configure an interface in only one group.
  • Configure a maximum of eight groups for each switch.
  • Configure a maximum of eight uplinks to monitor and a maximum of 48 downlinks to disable in each group.
  • Configure physical links and logical links in separate groups.

To configure uplink failure detection on a switch:

  1. Specify a name for an uplink failure detection group:
    [edit protocols]
    user@switch# set uplink-failure-detection group group-name
  2. Add an uplink interface to the group:
    [edit protocols]
    user@switch# set uplink-failure-detection group group-name link-to-monitor interface-name
  3. Repeat Step 2 for each uplink interface you add to the group.
  4. Add a downlink interface to the group:
    [edit protocols]
    user@switch# set uplink-failure-detection group group-name link-to-disable interface-name
  5. Repeat Step 4 for each downlink interface you add to the group.

Note: After you have configured an uplink failure detection group, use the show uplink-failure-detection group (Uplink Failure Detection) group-name command to verify that all interfaces in the group are up. If the interfaces are down, uplink failure detection does not work.

 

Related Documentation

 

Published: 2014-07-23

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