I am doing some bgp lab practise, once i finished the bgp configuaration on one router, observe there is one additional bgp route appear in the routing table. Could you give some idea why that happened? Thank you.
Vail#sh ip ro
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
B 192.168.200.0/24 [20/2195456] via 192.168.1.225, 00:08:46
192.168.255.0/32 is subnetted, 1 subnets
C 192.168.255.254 is directly connected, Loopback0
192.168.1.0/24 is variably subnetted, 4 subnets, 2 masks
B 192.168.1.0/24 [20/2169856] via 192.168.1.225, 00:08:46
C 192.168.1.224/30 is directly connected, Serial1/1.2 <<<<<(Why have this route)
B 192.168.1.216/30 [20/0] via 192.168.1.225, 00:08:46
C 192.168.1.220/30 is directly connected, Serial1/1.1
B 192.168.100.0/24 [20/0] via 192.168.1.225, 00:08:46
Vail#sh ip int brief
Interface IP-Address OK? Method Status Protocol
Serial1/0 unassigned YES TFTP up down
Serial1/0.1 unassigned YES NVRAM up down
Serial1/0.2 unassigned YES NVRAM deleted down
Serial1/1 unassigned YES TFTP up up
Serial1/1.1 192.168.1.221 YES manual up up
Serial1/1.2 192.168.1.226 YES manual up up <<<<<<<<<<<<<<<<
Serial1/2 unassigned YES NVRAM administratively down down
Serial1/3 unassigned YES NVRAM administratively down down
Loopback0 192.168.255.254 YES manual up up
Vail#sh ip b
BGP table version is 7, local router ID is 192.168.255.254
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
Does your EBGP neighbor (192.168.1.225) have a statement like network 192.168.1.224 mask 255.255.255.252? 'Cos that is where it is coming from to get into the BGP table. We need to see the configuration of the AS 200 neighbor.
However, it is not the BGP route that is getting into your forwarding table. That is getting overwritten with the directly connected route at AD=0.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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