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Switches, Hubs, and Modems
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Creating L3 interfaces on 5400zl switch

Steve Cromie
Occasional Visitor

Creating L3 interfaces on 5400zl switch

I would like to create an L3 link between 2 5400zl switches. It appears that this can't be done on an interface like a Cisco switch, but has to be done on a vlan. My question about doing this on a vlan is STP. I want an L3 interface, not something that participates in spanning tree and send's recieves bpdu's. How do I prevent the interfaces that are in the vlan from being part of the common spanning tree?
3 REPLIES
Richard Brodie_1
Honored Contributor

Re: Creating L3 interfaces on 5400zl switch

spanning-tree bpdu-filter
Steve Cromie
Occasional Visitor

Re: Creating L3 interfaces on 5400zl switch

Okay so there is no way to actually turn of spanning tree for interfaces that we want to actually be L3 interfaces?
Richard Brodie_1
Honored Contributor

Re: Creating L3 interfaces on 5400zl switch

The action of bpdu-filter is indistinguishable from turning spanning tree off in any way I can think of:

1. Disable sending BPDUs
2. Ignore received BPDUS.
3. Lock the port in forwarding state.