Hi all,
I have problem with EIGRP routing table. See the topology as below:
Router D <--> Router C <--> Router B <--> Router A
|
|
Router E <--> Router F <--> Router G
From the above topology: Router A, B, and G are member of AS 2. Router D & E are member of AS 1 and I made redistribution on Router C & F between AS 2 & 1. Below are info on each router:
- Router A
f0: 10.100.100.4 /24
s0: 192.168.21.1 /24 (Leased Line 128K to Router B)
- Router B
f0: 10.100.103.2 /24
s0: 192.168.21.2 /24 (Leased Line 128K to Router A)
s1: 192.168.22.1 /24 (IVSAT 128K to Router C)
- Router C
f0: 172.16.7.225 /23
s0: 192.168.22.2 /24 (IVSAT 128K to Router B)
Redistribute into EIGRP 1
network 10.0.0.0
network 192.168.21.0
network 192.168.22.0
Redistribute into EIGRP 2
network 172.16.0.0
- Router D
f0: 172.16.7.224 /23
s0: 192.168.254.14 /30 (Microwave 128K to Router E)
- Router E
f0: 172.16.3.224 /23
s0: 192.168.254.13 /30 (Microwave 128K to Router D)
- Router F
f0: 172.16.3.225 /23
s0: 192.168.20.2 /24 (IPLC 128K to Router G)
Redistribute into EIGRP 1
network 10.0.0.0
network 192.168.20.0
Redistribute into EIGRP 2
network 172.16.0.0
- Router G
f0: 10.100.100.5 /24
s0: 192.168.20.1 /24 (IPLC 128K to Router F)
All of the routers used "no auto-summary", "ip classless".
When the link between router B and C is down, I can see network 172.16.2.0 and 172.16.6.0 on Router G. And when the link between Router F and G is down, I can also see network 172.16.2.0 /23 and 172.16.6.0 on Router B BUT on Router A I can see only 172.16.6.0 so that network 172.16.2.0 is disappeared from routing table.
What is the possible cause? and Why? I have tried to check the configuration on all of the routers but I can't see the root cause. Help me please. Thank you very much in advance.
Regards,
Worapoj R.
