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Redistribute connected into EIGRP: modifying bandwidth do not work as expected

Hello everyone, I am trying to modify the metric when redistributing connected routes using a route-map. I change the bandwidth value inside the route-map but neighbours still calculate the same value as previous:

R1 and R4 are connected to 192.168.1.0/24

R1
===
router eigrp 1
 redistribute connected route-map CONNECTED_INTO_EIGRP1_MAP
 network 10.0.0.0 0.0.0.255
 auto-summary

route-map CONNECTED_INTO_EIGRP1_MAP permit 10
 set metric 100000 1000 255 1 1500

R4
===
router eigrp 1
 redistribute connected route-map CONNECTED_INTO_EIGRP1_MAP
 network 10.0.0.0 0.0.0.255
 auto-summary

route-map CONNECTED_INTO_EIGRP1_MAP permit 10
 set metric 50000 1000 255 1 1500

R3
===
R3#show ip route
...
D EX 192.168.1.0/24 [170/27136000] via 10.0.0.4, 00:02:35, Tunnel0
                    [170/27136000] via 10.0.0.1, 00:02:35, Tunnel0

R3#show ip eigrp topology 192.168.1.0
...
  10.0.0.1 (Tunnel0), from 10.0.0.1, Send flag is 0x0
      Composite metric is (27136000/281600), Route is External
...
  10.0.0.4 (Tunnel0), from 10.0.0.4, Send flag is 0x0
      Composite metric is (27136000/307200), Route is External
...

If I change delay value, neighbours calculate a new metric:

R4

===

route-map CONNECTED_INTO_EIGRP1_MAP permit 10
 set metric 100000 10 255 1 1500

R3#show ip route
...
D EX 192.168.1.0/24 [170/26882560] via 10.0.0.4, 00:00:35, Tunnel0

R3#show ip eigrp topology 192.168.1.0
...
  10.0.0.4 (Tunnel0), from 10.0.0.4, Send flag is 0x0
      Composite metric is (26882560/28160), Route is External
...
  10.0.0.1 (Tunnel0), from 10.0.0.1, Send flag is 0x0
      Composite metric is (27136000/281600), Route is External
...

I studied that EIGRP used bandwitdh and delay to calculate metric. What I am doing wrong ? Am i confusing metric with FD ?

Thanks in advanced.

1 REPLY 1

Edwin Summers
Participant
Participant

EIGRP uses the minimum path bandwidth in metric calculation. You're learning routes at R3 via tunnel interfaces. Have you verified the tunnel interface bandwidth setting vs the bandwidth used in your redistribution metric?

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