Articles

Video 21: Implementation and Tuning, Part 2

In BGP on April 27, 2011 by carlosfvc

BGP Neighbor Configuration

– Two ways to get netwroks into BGP:

Network command
Redistribution

– BGP Synchronization
Do not use or adverstise a route learned Via IBGP until the smae route has been learned from the internal routing protocol

config t
router bgp 5500
no synchronization

BGP next-hop processing

For EBGp peers: Change next hop address on advertised routes

For IBGP peers: Do not change next hop address on adverstised routes

————————
Router 1
————————

show ip bgp

config t
router bgp 5500
no synchronization

————————
Router 4
————————

BGP next-hop processing – Changes how routes are being adverstised as being next hoop for R1

router bgp 5500
neighbor 1.1.1.1 next-hop-self

————————
Router 5
———————–

– Advertising routes (Network Command)

config t
router bgp 6500
network 50.1.1.0 mask 255.255.255.0

– Adverstising routes (Redistibution)

access-list 50 deny 200.1.5.0
access-list 50 deny 200.1.6.0
access-list 50 permit any

route-map FILTER
match ip address 50

router bgp 6500
redistribute connected route-map FILTER
no auto-summary

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