BGP Lab 14 Change BGP Origin attribute (CCNP Level)

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Download Lab: GNS3

Image requirements:

 Cisco IOSv        (vios-adventerprisek9-m.vmdk.SPA.156-2.T)


Introduction:

Within the autonomous system 250, peers R1 and R2 are sending their local routes into BGP cloud with incomplete origin code, using route-map advertise those routes as IGP prefixes.


Lab tasks:

1. Verify that routers R1 and R2 are sending prefixes with the incomplete origin, ( on routers ER1 and ER2).

2. Use existing route-map to set the origin to IGP on the router R1.

3. Repeat step 1 on the router R2.

3. Verify the BGP table again on the routers ER1 and ER2.


Configuration example:
!
R1(config)# route-map LC_PRX permit 10
R1(config-route-map)# set origin igp
R1(config-route-map)# exit
!
R1(config)# router bgp 250
R1(config-router)#  redistribute connected route-map LC_PRX
Verify:
ER1# show ip bgp
!
R1# show route-map
R1# show ip prefix-list
R1# show run | section bgp
R1# clear ip bgp * soft out


Topology: