Policy Control Using Prefix Lists

• Example Configuration

router bgp 200

network 215.7.0.0

neighbor 220.200.1.1 remote-as 210

neighbor 220.200.1.1 prefix-list PEER-IN in

neighbor 220.200.1.1 prefix-list PEER-OUT out

!

ip prefix-list PEER-IN deny 218.10.0.0/16

ip prefix-list PEER-IN permit 0.0.0.0/0 le 32

ip prefix-list PEER-OUT permit 215.7.0.0/16

ip prefix-list PEER-OUT deny 0.0.0.0/0 le 32

• • Accept everything except our network from our peer
  • Send only our network to our peer

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