Refer to the Exhibit.
Router 2 is peered using EBGP to Router 3’s physical interface. A route is announced from Router 3 to Router 2. Router 2 then announces this route to Router 1 using IBGP. No routing policies are configured on any of the three routers. What will the BGP next-hop attribute of this route be when examined on Router 1?
A.
172.17.5.5
B.
10.10.10.1
C.
10.10.10.2
D.
192.168.5.50
Explanation:
External vs. Internal Peers (eBGP vs iBGP)
Last Updated: Friday, 11-May-2012 18:16:18 MDT | By InetDaemon
Peering is when you exchange routes with another BGP speaking device. There are two types of peering sessions:INTERNAL PEERS (iBGP)
An Internal peer is a BGP speaking neighbor who has the same AS number as you do. An internal peer will only pass on the best routes it knows from it’s own connections.EXTERNAL PEERS (eBGP)
External peers have different AS numbers. An external peer will pass on all the best routes it knows or has learned from any other peer to all other directly connected external peers. This is what I mean when I say eBGP is a ‘gossipy’ protocol. Routers speaking eBGP gab everything they know to their neighbors unless you install a gag (a route filter).