Known Problems 39

In addition, the port for which the report is requested does not have to be involved in the trunk for this situation to occur.

On a CoreBuilder 9000 with a single switch fabric module installed, when you insert a switching module that supports trunks on the backplane into an unpopulated slot that has AutoMap enabled, only the first link of the trunk for that slot is in the Up state, and other links are in the Down state.

There are two ways to avoid this problem:

Do not enable AutoMap on an unpopulated slot. Enable AutoMap after you insert the switching module.

Enable all backplane links in that slot that are in the Down state. (30041)

In a redundant switch fabric module configuration, when AutoMap is enabled for an unpopulated switching module slot, the backplane trunk does not enter the Up state.

There are two ways to avoid this problem:

Populate the switching module slot before you enable AutoMap.

Always allow 90 seconds for the secondary switch fabric module to be updated before you reset the primary switch fabric module.

Remove the secondary switch fabric module before you enable AutoMap, then reinsert the secondary module, and reset the primary switch fabric module so that the AutoMap change takes effect and backplane trunks are created. (30051)

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3Com 3CB9LF10MC, 3CB9LF36RL, 3CB9LF36TL, 3CB9LG9MC, 3CB9LF20MM, 3CB9LF20R manual Known Problems

3CB9LF36R, 3CB9LF36TL, 3CB9LF20R, 3CB9LF36RL, 3CB9LF36T specifications

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