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Knowledge Base

CDP and VTP not working through huawei switches

Publication Date:  2014-08-27  |   Views:  4721  |   Downloads:  0  |   Author:  y00732219  |   Document ID:  EKB1000049403


Issue Description

Cisco switch 1--------------huawei switch1------------huawei switch 2-----------------cisco switch 2

Cisco switch 1 and cisco switch 2 are running CDP and VTP

Cisco switch 2 is not able to learn Vlan information from cisco 1
cisco switch 2 is not able to discover neighbour cisco device

Alarm Information

CDP and VTP not passing through huawei switches

Handling Process

we need pass CDP and VTP thorugh huawei switches using tunnel protocol

Root Cause

CDP and VTP not passing through huawei switches


l2protocol-tunnel cdp vtp enable
l2protocol-tunnel cdp group-mac default-group-mac
l2protocol-tunnel vtp group-mac 0100-0100-0100

after running above commands on huawei device in global mode , cisco devices are able to discover each other using CDP and VTP