Customer has 3 sites and wish to have a 2 GB circuit to the Metro ring at each site,
The plan is to run EIGRP routing between all three sites.
Not sure if the L3 port-channel will work. Can somebody please advise on this design?
### Metro Ring ###
VLAN 172 is configured on all switches around the Metro ring.
VLAN 172 SVI (172.16.1.1/29) is configued on 7600 switch on the Metro ring.
Customer core switches connect to the Metro switches on VLAN 172 (ports G0/1-2)
Not sure i follow. Is vlan 172 meant to be the same vlan in each site ? If so you can't use L3 etherchannels, they would have to be L2 etherchannels. If you use L3 etherchannels each site would need it's own IP subnet for the L3 etherchannel and there would not be a shared vlan between sites.
Thanks for the reply. ISP is providing a layer 2 circuit (VLAN 172) around the ring.
Planning to configure each site with L3 port-channel 1 as shown below. Will Site-A (172.16.1.2) be able to ping Site-B (172.16.1.3)??
Will this solution work?
An etherchannel is a p2p link between 2 switches. So you end up with 3 etherchannels ie. -
site A 6500 -> ISP metro switch A
site B 6500 -> ISP metro switch B
site C 3750 -> ISP metro switch C
if you want these etherchannels to all be in vlan 172 then you cannot use L3 etherchannels because each L3 etherchannel would need to be in it's own IP subnet ie. you cannot use a common subnet, in your case 172.16.1.0 255.255.255.224 for 3 L3 etherchannels. So in short no, your solution as configured would not work.
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