Vlan failover on 3550 using floating static routes

[meatsack]

Hey all. I've got a big problem and I can't see anyway around it.

I am hoping a fresh pair of eyes will see something I don't.


My company is currently moving our layer 2 switched network to a layer 3 routed network. They decided on a iBGP ring. The ring consists of a primary route (vlan 514) and a backup route (vlan 260) should the primary fail. 7 switches participate in the ring . . . all the switches are cisco 3550's.

Each switch is configured with a 2 SVI, 1 for each vlan ring
as shown:

interface Vlan260
 description BGP Ring Leftside Layer 3 Interface
 ip address x.x.x.x 255.255.255.240
!
interface Vlan514
 description BGP Ring Rightside Layer 3 Interface
 ip address x.x.x.x 255.255.255.240

I intended to use floating static routes to re-direct traffic to the backup vlan should the primary route fail i.e:

ip route <subnet> <mask> vlan514 
ip route <subnet> <mask> vlan260 3

My problem is I am aware of no way to have the switchports dynamically change their vlan assignments (1 port services multiple customers via 1 physical link).

Can anyone offer a suggestion?

Thanks

 

[burtsbees]

Well, for floating static routes, the idea is to have a link take over in case one fails, which you are aware of I know...but the two routes should go to the same destination...why would you need the vlan to change as well, since they both seem to serve the same purpose? I assume vlan514 is the customer link, but is vlan260 NOT a customer link or something???

Burt

 

[lerdalt]

I'm kind of hung up on the change from a layer 2 switched network to a layer 3 routed network. Think it is kind of an odd move, but oh well.

The quick thought that came to my mind is that then each switch would have a third vlan for the clients to connect to and then maybe using static routes to point out each of the vlans.