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How to verify Link before VLAN Extension

Hi Experts

we got a dark fiber betwwen two sites away from each other 30 Km,i need to connect this sites acts as  backup dc to main dc in main site using cisco 4900 Switches in BK-DC anf 6513 in the main site,how can i verfiy if this fiber oparates as L2 and i can extend vlan servers,is it via "sh cdp neigh" and "sh vlan br"?

Thanks for ur time to respond

jamil

2 REPLIES
New Member

How to verify Link before VLAN Extension

The easiest way would be to use "sh cdp n" - this is a L2 protocol which seek out devices with CDP on each side.  If you can see the other neighbor device, you have L2 connectivity.

New Member

How to verify Link before VLAN Extension

thanks

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