We have a pair of 3750 Switches connected via trunk ports. They have onward connection through a pair of Pix's connected in a stateful failover configuration. If I fail the the 3750 Switch connected to the active Filewall the Filewalls failover but trunk port link down trap from the 3750 attached to what was the secondary firewall gets dropped. Does anyone have a clue whether this is a deficiency in the PIX failover configuration as the trap is discarded as failover happens.
That question might be bet asked on one of the Security forums. As for a workaround, you could switch from using traps to using SNMP informs. An inform is similar to a trap except that it must be acknowledged by the manager. The inform will be resent until an acknowledgment is received.
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