Hey this seems to be a pretty easy problem to solve but I need help with it.
Here is my diagram:
http://www.flickr.com/photos/31154535@N07/4604946818/sizes/o/
What I want to do is build in redundancy for devices that are dual homed on these two stacked 3750s. My phone tech wants to bind voice services on the loopbacks on these two Cisco 5350 gateways. he wants it so that if a switch dies we can still route to both loopbacks. The problem starts when one switch goes down. For example when switch01 dies, I cant ping the loopback 5.6.56.31 from sw02.
Here is the routing table on router1 (left in the diagram)
Gateway of last resort is 10.1.56.1 to network 0.0.0.0
5.0.0.0/24 is subnetted, 1 subnets
C 5.1.56.0 is directly connected, Loopback0
10.0.0.0/24 is subnetted, 2 subnets
C 10.1.56.0 is directly connected, GigabitEthernet0/0
C 10.1.70.0 is directly connected, GigabitEthernet0/1
S* 0.0.0.0/0 [1/0] via 10.1.56.1
I put in a scond route as you can see here:
VOIPXML01-HVN#sh run | i ip route
ip route 0.0.0.0 0.0.0.0 10.1.56.1
ip route 0.0.0.0 0.0.0.0 10.1.70.1 10
The .1 addresses are the SVI for the vlans on the switch.
Here is the routing table for the stacked 3750:
Gateway of last resort is 10.1.51.1 to network 0.0.0.0
5.0.0.0/32 is subnetted, 2 subnets
S 5.1.56.31 [1/0] via 10.1.56.31
S 5.1.70.32 [1/0] via 10.1.56.32
S* 0.0.0.0/0 [1/0] via 10.1.51.1
And I have included other routes as well on the switch:
cab8sw1-hvn-3750g#sh run | i ip route
ip route 0.0.0.0 0.0.0.0 10.1.51.1
ip route 5.1.56.31 255.255.255.255 10.1.56.31
ip route 5.1.56.31 255.255.255.255 10.1.70.31 10
ip route 5.1.70.32 255.255.255.255 10.1.70.32
ip route 5.1.70.32 255.255.255.255 10.1.56.32 10
The routers are connected to L2 interfaces on the 3750. Here is what the entry for router1 looks like:
interface GigabitEthernet1/0/3
description voipxml01 - ge0
switchport access vlan 232
spanning-tree portfast
Any advice would be appreciated. I was going to do an HSRP solution, but the voice guy says he wants to use the loopbacks.
Thanks a million!
