Several VPN GET with Multicast clouds

Hi all

It is a recommended approach to use different multicast addresses if you use a key server to manage several groups GET VPN? It is not a provider environment hosted service but just for one customer in need of a logical separation.

I think it would be a good idea to do it, but I'm not very familiar with multicasting on a set, so I would appreciate anyone sharing similar experiences or the potential pitfalls with this config. Is there something I need to watch out for?

Xavier

Xavier,

given that we can separate the information at the level of the GDOI groups you should not need to use multiple addresses.

However consider a scenario in which a GM is part of Group 1, but not in Group 2. He will receive discount at the key for both, but will not be able to understand group2 generate a new key, you will see the log messages that signals a problem once per hour.

It makes sense to separate the addresses mcast especially if this deployment could grow/fork/expand in the future.

M.

Tags: Cisco Security

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