STP between Cisco and Cabletron (Enterasys)

Answered Question
Sep 18th, 2007

Hello

We are connecting our Cisco Cat 3750 to a customers Cabletron Switches and they are refusing to use dot1q trunks. Since PVST+ and CST interoperability is dependant on VLAN 1 my question is does a n interface configured as "switchport mode access" still send STP bpdus for VLAN 1 or untagged BPDUs from the VLAN it is configured as part of.

Thanks

Correct Answer by Edison Ortiz about 9 years 5 months ago

control traffic such as bpdu will use Vlan1 and yes, the switch will send bpdus even when the port is set to access mode.

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Correct Answer
Edison Ortiz Tue, 09/18/2007 - 19:06

control traffic such as bpdu will use Vlan1 and yes, the switch will send bpdus even when the port is set to access mode.

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