I have two 4507 core switches (collapsed core) doing intervlan routing and running hsrp on each vlan. The 2 cores are connected via L2 etherchannel links. Core 1 is active for all vlans & core2 is standby.
I have one 2821 router connecting this site to our central site. I am running osppf on both the cores and the 2821. Since Core 2 (standby core) has an rj45module, I created a Vlan interface on core 2, ip address 172.16.214.225 /27, did not include hsrp for this vlan, moved an rj45 port (rj45 module on core 2) under this vlan and connected the 2821 router ethernet port (ip 172.16.214.226) to this port on core 2.
Connections are running fine now. I want to know if I create a second svi on core1, say 172.16.214.200/27 and connect the routers second ethernet interface to a port under this vlan (using GLC-T on the 4507 SFP module) in order to have ospf load balancing hence router redundancy, is this a safe design, without routing loops? Any considerations about this design?
All feedback is appreciated
Yes it would work fine. Ideally you would still use /30's though as there is no need to have any other devices in these vlans other than just the 2821 interface and the L3 SVI on each 4500.