I have a network as follows:
mcb-core
t2/1 directly connected to t2/1 on hbg-core
g9/8 connected thru ethernet net to g7/5 on hbg-core
g9/33 directly connected to f0/1 on mcb-vpn
hbg-core
t2/1 directly connected to t2/1 on mcb-core
g7/5 connected thru ethernet net to g9/8 on mcb-core
mcb-vpn
f0/1 directly connected to g9/33 on mcb-core
mcb-vpn originates route (via static redist) to 10.214.210.0/24.
mcb-core#show ip eigrp top 10.214.210.0/24
IP-EIGRP (AS 1): Topology entry for 10.214.210.0/24
State is Passive, Query origin flag is 1, 1 Successor(s), FD is 25856
Routing Descriptor Blocks:
10.214.206.3 (GigabitEthernet9/33), from 10.214.206.3, Send flag is 0x0
Composite metric is (25856/1), Route is External
Vector metric:
Minimum bandwidth is 100000 Kbit
Total delay is 10 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 1
External data:
Originating router is 10.214.206.130
AS number of route is 0
External protocol is Static, external metric is 0
Administrator tag is 0 (0x00000000)
10.214.208.66 (GigabitEthernet9/8), from 10.214.208.66, Send flag is 0x0
Composite metric is (256768/26112), Route is External
Vector metric:
Minimum bandwidth is 10000 Kbit
Total delay is 30 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 3
External data:
Originating router is 10.214.206.130
AS number of route is 0
External protocol is Static, external metric is 0
Administrator tag is 0 (0x00000000)
hbg-core#show ip eigrp top 10.214.210.0/24
IP-EIGRP (AS 1): Topology entry for 10.214.210.0/24
State is Passive, Query origin flag is 1, 1 Successor(s), FD is 26112
Routing Descriptor Blocks:
10.214.208.0 (TenGigabitEthernet2/1), from 10.214.208.0, Send flag is 0x0
Composite metric is (26112/25856), Route is External
Vector metric:
Minimum bandwidth is 100000 Kbit
Total delay is 20 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 2
External data:
Originating router is 10.214.206.130
AS number of route is 0
External protocol is Static, external metric is 0
Administrator tag is 0 (0x00000000)
10.214.208.65 (GigabitEthernet7/5), from 10.214.208.65, Send flag is 0x0
Composite metric is (256512/25856), Route is External
Vector metric:
Minimum bandwidth is 10000 Kbit
Total delay is 20 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 2
External data:
Originating router is 10.214.206.130
AS number of route is 0
External protocol is Static, external metric is 0
Administrator tag is 0 (0x00000000)
mcb-core obviously shows the successor as the path through mcb-vpn (g9/33). However, do I read this correctly in that the feasible successor is hbg-core through the ethernet link (g9/8)?
The reported distance for that link (26112) is higher than the feasible distance for that subnet (25856) as calculated by mcb-core. This is because that path would take traffic through the Ethernet net to hbg-core, then out the 10gig link back to mcb-core, then on to the mcb-vpn. What puzzles me is why that path is shown in the topology table since the reported distance is larger than the feasible distance, thus not matching the feasibility condition for EIGRP?
Thoughts? Am I interpreting things correctly?
Also note that the the mcb-core and hbg-core are 6509s, the mcb-vpn is a 2651. Oddly enough, show ip eigrp top on the 6509 does not give the distances. You have to do show ip eigrp top x.x.x.x/y to get this. I don't know why.
