Configures the number of Hello+ messages required by the specified ELSM-enabled ports to transition from the Down-Wait state to the Up state.
| port_list | Specifies the port or ports for which the ELSM hold threshold should be configured. |
| hold_threshold | Specifies the number of Hello+ messages required to transition from the Down-Wait state to the Up state. The default is 2 messages, and the range is 1 to 40 messages. |
The default is 2 Hello+ messages.
The port begins in the Down state, so the first received Hello+ message transitions the ELSM-enabled port from the Down state to the Down-Wait state. After that transition, the configured hold-threshold value determines the number of Hello+ messages required to transition from Down-Wait state to the Up state.
The ELSM hold threshold determines the number of Hello+ messages the ELSM peer port must receive to transition from the Down-Wait state to the Up state. For example, a threshold of 1 means the ELSM port must receive at least one Hello+ message to transition from the Down-Wait state to the Up state.
After the down timer expires, the port checks the number of Hello+ messages against the hold threshold. If the number of Hello+ messages received is greater than or equal to the configured hold threshold, the ELSM receive port moves from the Down-Wait state to the Up state.
If the number of Hello+ messages received is less than the configured hold threshold, the ELSM receive port moves from the Down-Wait state back to the Down state and begins the process again.
If you modify the hold threshold on one port, we recommend that you use the same hold threshold value on its peer port.
You configure the hold threshold on a per-port basis, not on a per-switch basis.
The following command specifies that two Hello+ messages are required for the ELSM receive ports configured on slot 2, ports 1-2, to transition from the Down-Wait state to the Up state:
configure elsm hold-threshold 2 ports 2:1-2:2
This command was first available in ExtremeXOS 11.4.
This command is available on the Summit X450-G2, X460-G2, X670-G2, X770, and ExtremeSwitching X440-G2, X620, X690, X870 series switches.
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