I just wanted to ask a simple question to make sure I have this right. I'm trying to create layer 2 redudancy to our CME router. I thought it would be best to make sure all traffic egresses and ingreses from the same interface unless that interface or the switch it is connected to if offline. Do I have the right confguration in mind to get this done? I want to make sure nothing funky happens with STP. Or would etherchannel be better?
cisco 3845 g0/1 <--> cisco 3750 stack switch 1
cisco 3845 fa0/1/0 <--> cisco 3750 stack switch 2
bridge irb bridge 1 route ip
int g0/1 no ip address bridge-group 1 priority 2 No ip directed-broadcast
int fa0/2/1 bridge-group 1 priority 4 No ip directed-broadcast
int bvi 1 ip address 10.10.10.1 255.255.255.0 service-policy output lan_voip_qos
If one of the routers will only be used in case of failover, I would configure HSRP on the routers for failover. If you're wanting to load balance, you'll need GLBP.
I'm trying to create L2 redundancy between the router and the 3750 stack. I will be also configuring HSRP for router redundancy, but I would rather the 3845 stay in operation if it is just a L2 failure.
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