BGP2

Example :Next Hop on a Multiaccess Network

The following takes place in 

a multiaccess network:

1.Router B advertises

network 172.30.0.0 to

router A in EBGP with

a next hop of 10.10.10.2,

not 10.10.10.1 This avoids

an unnecessary hop.

2.BGP is being efficient by 

informing AS 64520 of the

best entry point into AS 65000

for network 172.30.0.0.

3.Router B in AS 65000 also advertises to AS 64520 that

the best entry point for each network in AS 64600 is the

next hop of router C because that is the best pathto 

move through AS 65000 to AS 64600.