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8/4/2019 Bgp Lab Demo
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BGP LAB
8/4/2019 Bgp Lab Demo
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BGP configuration
1. enable router BGP
Router(config-router)# router bgp [AS NUBER]
2. neighbor configuration Router(config-router)# neighbor [peer address] remote-as [AS
NUMBER]
3 . Check the status
Router# Show ip bgp summary
Router# Show ip bgp
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LAB 1 – basic configuration
Confgure for IBG and EBGP
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LAB 2 ~ 4
Confgure for sending network block30.0.0.0/24
r1
r3
r2
20.0.0.0/24
AS 100
AS 200
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LAB 2 network command
Network configuration
Router(config-router)# network 30.0.0.0 Check status
Router# Show ip bgp summary
Router# Show ip bgp
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LAB 3 static redistribution
Delete network command
Configure static router Router(config)# ip route 30.0.0.0 255.255.255.0 null0
Redistribute static configuration
Router(config-router)# redistribute static
Check status Router# Show ip bgp summary
Router# Show ip bgp
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LAB 4 IGP redistribution
Delete static route
Configure isis level 1 for r1 and r3 Redistribiute ospf configuration
Router(config-router)# redistribute ospf 1 metric 100
Check status
Router# Show ip bgp summary Router# Show ip bgp
Router# Show ip bgp neighbor
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LAB 5 next-hop-self
30.0.0.0/24
r1
r3
r230.0.0.0/24
AS 100
AS 200
10.0.0.0/24
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LAB 5 next-hop-self
Configure BGP
Check next-hop in r2 Configure next-hop-self in r1
Router(config-router)# neighbor 30.0.0.2 next-hop-self
Check status
Router# Show ip bgp summary Router# Show ip bgp
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LAB 6 route-reflector
r1
r3AS 100
AS 200
10.0.0.0/24
r5
r4
r2
r6
Route-Reflector
AS 300
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LAB 6 route-reflector
Configure BGP in each routers in each AS
Configure Router-Reflector in r4 and r6 for each neighbor Neighbor x.x.x.x route-reflector-client
configure next-hop-self
Check status
Router# Show ip bgp neighbor
Router# Show ip bgp summary
Router# Show ip bgp
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LAB 7 confederation
r1
r3
AS 100 AS 200
10.0.0.0/24
r5
r4
r2
r6
AS 300
AS 65010AS 65020
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LAB 7 confederation Configure BGP in each routers in each AS
Check next-hop in r2
Configure confederation in each r4
Router(config)# router bgp 65010
Router(config-router)# bgp confederation identifier 300
Router(config-router)# neighbor <r3 ip address> remote-as 100
Router(config-router)# neighbor <r1 ip address> remote-as 65020
Configure confederation in each r1 Router(config)# router bgp 65010
Router(config-router)# bgp confederation identifier 300
Router(config-router)# bgp confederation peers 65020
Router(config-router)# neighbor <r4 ip address> remote-as 100 Router(config-router)# neighbor <r2 ip address> remote-as 65020
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LAB 8 loopback and multihop
r1
r230.0.0.0/24
AS 200
AS 100
30.0.0.0/24
Lo 10.0.0.1/32
Lo 20.0.0.1/32
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LAB 8 loopback and multihop
Configure loopback
Configure static for loopback interfaces connectivity Configure BGP
Check multihop in each router
Router(config-router)# neighbor 10.0.0.1 ebgp-multihop 2
Router(config-router)# neighbor 10.0.0.1 update-source lo0
