I have a small issue that I can't work out why I have it.
I use EIGRP at work, and have two routes from one building to another. One way across is our wireless bridge, and the other is a fibre.
I have configured vlan interfaces for these links, and these vlan interfaces are the ones used for EIGRP. The bandwidth of the wireless is set to 54000, and the fibre is set to 100000.
My query is this, the routing table shows routes using both of these links, both with the same FD/RD. Can anyone explain what's going on here?
One building has clustered 6509s, and these link across to a 3550.
Without seeing your configs, I doubt anyone here can help you you. At a minimum you need to post the interface and eigrp configs from all four routers.
OK, here are the parts I think are important to this query - many thnaks for anyone that can help me with this.
Core 1 - 6509 - cluster with core 2
interface Vlan407 description *** Second Floor Users *** bandwidth 54000 ip address 10.150.42.252 255.255.255.0 ip helper-address 10.x.x.x ip helper-address 10.x.x.x ip pim sparse-dense-mode standby 1 ip 10.150.42.254 standby 1 timers 1 3 standby 1 priority 200 standby 1 preempt
interface Vlan550 description *** Fibre Link to old building *** bandwidth 1000000 ip address 192.168.206.1 255.255.255.248 standby 1 ip 192.168.206.3 standby 1 priority 200 standby 1 preempt ! router eigrp 1 passive-interface default no passive-interface Vlan407 no passive-interface Vlan550 network 10.150.42.0 0.0.0.255 network 192.168.206.0 0.0.0.7 no auto-summary
Core 2 - 6509 - cluster with core 1
interface Vlan407 description *** Second Floor Users *** bandwidth 54000 ip address 10.150.42.253 255.255.255.0 ip helper-address 10.x.x.x ip helper-address 10.x.x.x ip pim sparse-dense-mode standby 1 ip 10.150.42.254 standby 1 timers 1 3 standby 1 preempt
interface Vlan550 description *** Fibre Link to old building *** bandwidth 1000000 ip address 192.168.206.2 255.255.255.248 standby 1 ip 192.168.206.3 standby 1 preempt ! router eigrp 1 passive-interface default no passive-interface Vlan407 no passive-interface Vlan550 network 10.150.42.0 0.0.0.255 network 192.168.206.0 0.0.0.7 no auto-summary
Snippet from the routing table of one of the 6509s
D 194.189.73.64 [90/1820416] via 192.168.206.5, 6d08h, Vlan550 [90/1820416] via 10.150.42.3, 6d08h, Vlan407
The above is what I'm a little confused about. It appears to me that they are being load-shared. When I do a traceroute though, the fibre link always seems to be the one used, which is correct.
Take off the bandwidth statements on the 3550, they are not required and do not do what you intend.
Without your topology, I can't say for sure but I'm assuming that these VLANs exist in both buildings, and thus you are not routing any traffic between buildings, you are switching traffic. That is why the bandwidth is the same for both routes because they are directly attached at both ends.
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