How To Deal With VTP Multicast Storms On A Sun 10 Gigabit Ethernet Switch

Asset ID:	1-71-1420129.1
Update Date:	2013-01-10
Keywords:

Solution Type Technical Instruction Sure

Solution 1420129.1 : How To Deal With VTP Multicast Storms On A Sun 10 Gigabit Ethernet Switch

Applies to:

Sun Network Switch - Version Not Applicable and later
Information in this document applies to any platform.

Goal

In some Cisco environments VLAN Trunking Protocol (VTP) is used by the Cisco switches to propagate Virtual Local Area Network (VLAN) definitions. This may lead to Cisco VTP multicast storms when switches of other vendors get connected.

This document describes how to deal with Cisco VTP multicast storms on a Sun 10 Gigabit Ethernet Switch.

Fix

We have the following options:

for long term solution, move the environment to a standard protocol to propagate VLAN definitions between switches, e.g. GARP VLAN Registration Protocol (GVRP)
for short term solution disable or block the outgoing port on the Cisco switch for VTP or
block the Sun switch inbound side in SEFOS similar to the below

mac access-list extended 1
deny any host 01:00:0c:cc:cc:cc priority 7

interface ex0/72
mac access-group 1 in

More documentation on Sun 10 Gigabit Ethernet Switches :

References

<NOTE:1399483.1> - 10-Gigabit Ethernet Switches (Opus) Product Page
<NOTE:1400605.1> - TSC Network Product Home

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