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. The default is two messages, and the range is one to three messages.
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 must configure the hold threshold on a per-port basis, not on a per-switch basis.
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