EIGRP redistribute into BGP not seeing routes in routing table

[Quoc Le]

Hello,

I am unable to see routes in the routing when distributing EIGRP routes into BGP. When doing a show ip bgp.. I do see the route listed, but not from the routing table. Attached is my network topology. How my lab is setup is that from DENTST Router to Cadiz-Rtr it is setup for BGP. From Cadiz-Rtr to CadizPlant-Rtr is setup for EIGRP. Cadiz-Rtr will be the one redistributing eigrp into bgp and bgp into eigrp. Here is the sh ip route output:

Cadiz-Rtr#sh ip route

Codes: L - local, 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, H - NHRP, l - LISP

       + - replicated route, % - next hop override

Gateway of last resort is not set

      1.0.0.0/8 is variably subnetted, 2 subnets, 2 masks

C        1.1.1.0/30 is directly connected, Serial2/1.200

L        1.1.1.2/32 is directly connected, Serial2/1.200

      10.0.0.0/8 is variably subnetted, 4 subnets, 3 masks

D        10.168.192.0/24

           [90/409600] via 192.168.203.2, 09:26:43, Ethernet0/2.300

C        10.168.236.0/24 is directly connected, Ethernet0/0.2

L        10.168.236.254/32 is directly connected, Ethernet0/0.2

B        10.168.250.192/26 [200/0] via 1.1.1.1, 05:32:00

      172.16.0.0/24 is subnetted, 1 subnets

D        172.16.192.0 [90/409600] via 192.168.203.2, 09:26:43, Ethernet0/2.300

      192.168.203.0/24 is variably subnetted, 2 subnets, 2 masks

C        192.168.203.0/30 is directly connected, Ethernet0/2.300

L        192.168.203.1/32 is directly connected, Ethernet0/2.300

CadizPlant-Rtr

CadizPlant-Rtr#sh ip route

Codes: L - local, 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, H - NHRP, l - LISP

       + - replicated route, % - next hop override

Gateway of last resort is not set

      1.0.0.0/30 is subnetted, 1 subnets

D EX     1.1.1.0 [170/281856] via 192.168.203.1, 00:47:45, Ethernet0/0.300

      10.0.0.0/8 is variably subnetted, 4 subnets, 3 masks

C        10.168.192.0/24 is directly connected, Loopback2

L        10.168.192.254/32 is directly connected, Loopback2

D EX     10.168.236.0/24

           [170/281856] via 192.168.203.1, 00:47:45, Ethernet0/0.300

D EX     10.168.250.192/26

           [170/281856] via 192.168.203.1, 00:47:45, Ethernet0/0.300

      172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks

C        172.16.192.0/24 is directly connected, Loopback200

L        172.16.192.254/32 is directly connected, Loopback200

      192.168.203.0/24 is variably subnetted, 2 subnets, 2 masks

C        192.168.203.0/30 is directly connected, Ethernet0/0.300

L        192.168.203.2/32 is directly connected, Ethernet0/0.300

DENTST-Rtr

DenverTest-Rtr#sh ip route

Codes: L - local, 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, H - NHRP, l - LISP

       + - replicated route, % - next hop override

Gateway of last resort is not set

      1.0.0.0/8 is variably subnetted, 2 subnets, 2 masks

C        1.1.1.0/30 is directly connected, Serial2/0.100

L        1.1.1.1/32 is directly connected, Serial2/0.100

      10.0.0.0/8 is variably subnetted, 3 subnets, 3 masks

B        10.168.236.0/24 [200/0] via 1.1.1.2, 00:58:28

C        10.168.250.192/26 is directly connected, Ethernet0/0.2

L        10.168.250.254/32 is directly connected, Ethernet0/0.2

DenverTest-Rtr#sh ip bgp

BGP table version is 13, local router ID is 10.168.250.254

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,

              r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,

              x best-external, a additional-path, c RIB-compressed,

Origin codes: i - IGP, e - EGP, ? - incomplete

RPKI validation codes: V valid, I invalid, N Not found

     Network          Next Hop            Metric LocPrf Weight Path

* i 1.1.1.0/30       1.1.1.2                  0    100      0 i

*>                   0.0.0.0                  0         32768 i

* i 10.168.192.0/24  192.168.203.2       409600    100      0 ?

*>i 10.168.236.0/24  1.1.1.2                  0    100      0 i

*>  10.168.250.192/26

                       0.0.0.0                  0         32768 i

* i 172.16.192.0/24  192.168.203.2       409600    100      0 ?

[Julio Carvajal · Accepted solution]

Hello Quoc Le,

Here is the thing:

DenverTest-Rtr#sh ip bgp

* i 172.16.192.0/24  192.168.203.2   409600    100      0 ?

* i 10.168.192.0/24  192.168.203.2       409600    100      0 ?

The problem is that Denver router does not know how to get to  192.168.203.2  so it will not install the routes on it's routing table (they are not valid... Missing the > on the BGP table)

How to fix it:

make sure you know how to get to 192.168.203.2 (Static route)

add the command bgp neig X.X.X.X next-hop-self on Router Cadiz-Rtr

Regards

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[Quoc Le]

Thanks! I was able to fix it, I was not advertising 192.168.203.2 network into BGP. Once I added that network, I was able to see 10.168.192.X network in the routing table. Thanks for the help.

[Julio Carvajal]

Hello Quoc,

Exactly, that was the problem as I mentioned: We must have a route to the device that publishes the route

Regards

Remember to rate all of the helpful posts.

For this community that's as important as a thanks.