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how to create secure routing ?

The network consists of dual 6500 series catalysts servicing as core switches/routers. Attached to the core are two 3700 catalysts operating as access layer devices with both layer-2 and layer-3 interfaces, and a single 7600 series router as the network edge. The 7600 series router is running BGP and OSPF. The core switches are running OSPF and the access switches are not running a routing protocol. This network has no packet filtering of any kind. How you would design secure routing for this network.

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Re: how to create secure routing ?

What do you mean by secure routing? Authentication of neighbors to ensure that they're who they claim to be? Or is it encrypting traffic that is routed?

In first case both OSPF and BGP support MD5 authentication option. In second case you'll need to configure IPSEC.

Or by secure routing do you mean reliable routing? In this case you'll need to ensure that your network topology is redundant.

If you post answers to those questions and a diagram of your network, that would allow to give more detailed answer.

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