EIGRP topology all-links

[schmidtjoe]

Hello,

I am running a basic EIGRP configuration in GNS3 and noticing R9 can not onboard the network 10.1.1.1/32 and 10.2.2.2/32 advertised by R8 when interface g0/3 is active. Even I am using the command

show ip eigrp topology all-links 

I can only get the route path R9->R6 for both network segments. When I shut down the interface g0/3, R9 can show correctly the route path to both network segments through R8. Can someone help?

R9-Gi0/3 up

R9#show ip eigrp topology all-links
EIGRP-IPv4 Topology Table for AS(100)/ID(192.168.4.4)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status

P 10.1.1.1/32, 1 successors, FD is 130816, serno 22
        via 40.40.40.1 (130816/128256), GigabitEthernet0/3
P 40.40.40.0/24, 1 successors, FD is 2816, serno 19
        via Connected, GigabitEthernet0/3
P 30.30.30.0/24, 1 successors, FD is 2816, serno 1
        via Connected, GigabitEthernet0/2
P 20.20.20.0/24, 1 successors, FD is 3072, serno 3
        via 30.30.30.1 (3072/2816), GigabitEthernet0/2
        via 40.40.40.1 (3328/3072), GigabitEthernet0/3
P 10.2.2.2/32, 1 successors, FD is 130816, serno 21
        via 40.40.40.1 (130816/128256), GigabitEthernet0/3
P 10.10.10.0/24, 1 successors, FD is 3072, serno 20
        via 40.40.40.1 (3072/2816), GigabitEthernet0/3
        via 30.30.30.1 (3328/3072), GigabitEthernet0/2

 R9-G0/3 admin down

R9#show ip eigrp topology all-links
EIGRP-IPv4 Topology Table for AS(100)/ID(192.168.4.4)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status

P 10.1.1.1/32, 1 successors, FD is 131328, serno 27
        via 30.30.30.1 (131328/131072), GigabitEthernet0/2
P 40.40.40.0/24, 1 successors, FD is 3584, serno 30
        via 30.30.30.1 (3584/3328), GigabitEthernet0/2
P 30.30.30.0/24, 1 successors, FD is 2816, serno 1
        via Connected, GigabitEthernet0/2
P 20.20.20.0/24, 1 successors, FD is 3072, serno 3
        via 30.30.30.1 (3072/2816), GigabitEthernet0/2
P 10.2.2.2/32, 1 successors, FD is 131328, serno 28
        via 30.30.30.1 (131328/131072), GigabitEthernet0/2
P 10.10.10.0/24, 1 successors, FD is 3328, serno 29
        via 30.30.30.1 (3328/3072), GigabitEthernet0/2

[MHM Cisco World]

check 

[paul driver]

Hello

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@schmidtjoe wrote:

Hello,

I am running a basic EIGRP configuration in GNS3 and noticing R9 can not onboard the network 10.1.1.1/32 and 10.2.2.2/32 advertised by R8 when interface g0/3 is active.

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Not sure what you mean by "onbroad" but what you see when the link between R9-R6 is active I believe is correct,
The feasible distance to those networks via R9-R6 will be lower than the reported distance from R8, as such R8 will not become a feasible successor, Only when R9 loses its connection to R6 will R9 query R8 for those lost networks and then accept R8 as a valid successor