Overlay

Recursive routing problems can occur with tunnel or overlay networks. If a router tries to reach a remote routers encapsulating interface via a tunnel (overlay) network, a connectivity issue will occur. Recursive routing problems can be prevented by not allowing the tunnel endpoint IP address from being advertised over the tunnel network.

In global configuration mode, create a tunnel with the command interface tunnel 10 Next, configure the source address or interface of the tunnel with the command tunnel source. For example,. tunnel source GigabitEthernet0/0 The tunnel source command indicates the interface that will be used for tunnelling the traffic. Configure the address of the destination interface.…

Generic Routing Encapsulation is a protocol that can provide connectivity to a variety of network layer protocols by tunneling them over an IP based network. Generic Routing Encapsulations origins come from a legacy protocol called Internetwork Packet Exchange (IPX). GRE would be able to carry IPX packets over an IP network via encapsulation through a…