The configuration of iBGP peers in Cisco IOS follows the same basic sequence of steps that is used when configuring eBGP peers. There are two ways to configure iBGP neighbor relationships. These two methods, which also apply to external BGP peers, are as follows:
- Peer the routers using the physical interface IP addresses
- Peer the routers using indirectly connected interfaces
Configuring Directly Connected iBGP Neighbor Relationships
The configuration of directly connected iBGP neighbors is straightforward. After BGP has been enabled on the router, the neighbor [address] remote-as [autonomous system number . . .
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