Solving routing loop problem due to poorly configured redistribution

The┬ádiagram Routing loop when vIOS2 (R2) is trying to reach 1.1.1.1 in vIOS1 (R1) R2#traceroute 1.1.1.1 numeric Type escape sequence to abort. Tracing the route to 1.1.1.1 VRF info: (vrf in name/id, vrf out name/id) 1 192.168.23.3 4 msec 4 msec 5 msec 2 192.168.34.4 4 msec 8 msec 5 msec 3 192.168.24.2 2 msec … Continue reading Solving routing loop problem due to poorly configured redistribution

BGP: Injecting IGP route into BGP without redistribution

The diagram is complicated with an additional link, and instead of full BGP route in AS65000, the BGP route is propagated with the help of OSPF. In previous lab, the BGP full mesh was established by peering both subnets of a BGP router. However this step can be simplified by peering the BGP speaker's loopback … Continue reading BGP: Injecting IGP route into BGP without redistribution

Redistribution: Prefix-list and distribution-list

R1(config)#router ospf 1 R1(config-router)#redistribute eigrp 100 R3#sh ip route ospf O E2 192.168.100.0/24 [110/20] via 192.168.0.1, 00:00:04, Serial0/1 When R1 redistributed EIGRP route into OSPF area 0, default metric and default classful summarization was used. Look at the routing table of R3, only classful subnet is seen, look at the diagram, the 10 networks are … Continue reading Redistribution: Prefix-list and distribution-list