[c-nsp] eompls with different vlans at the ends

liviu.pislaru at gmail.com liviu.pislaru at gmail.com
Wed May 16 08:00:06 EDT 2007


hello,
i wanted a confirmation that "bpdu filter" and "disabling STP" are the only 
choices for this setup.

thanks,
liviu.

On Wednesday 16 May 2007 14:52, Oliver Boehmer (oboehmer) wrote:
> don't think you can filter BPDUs on the PE if you're using this type of
> setup (you might be able to do if you used SVI/Vlan-based eompls, i.e.
> with an interface Vlan and bpdu filter/mac-acl), so you need to address
> this PVID inconsistency issue on the CE, either by disabling STP for the
> Vlan (as you already suggested), or by enabling BPDU fulter on the CE
> switches, which looks like a better option.
>
> 	oli
>
> liviu.pislaru at gmail.com <> wrote on Wednesday, May 16, 2007 12:40 PM:
> > hello,
> >
> > did everybody use the same vlan id on both ends of the "vlan based
> > eompls tunnel" ? is anyone here that use different vlans, who can
> > give me an answer to my question ?
> >
> > thanks,
> > liviu.
> >
> > On Tuesday 15 May 2007 15:34, liviu.pislaru at gmail.com wrote:
> >> hello,
> >>
> >> topology:
> >> Host1 --> switches -->PE --eompls--PE <-- switches <- Host2
> >>
> >> config PE (7604 sup 720 / IOS SRA3):
> >> subinterface + encapulation dot1q vlan X + xconnect (MUX-UNI)
> >>
> >> problem:
> >> if vlan X for Host1 is different then vlan X for Host 2, on the first
> >> switch connected directly to PE we will have STP bloking state at
> >> VlanX.
> >>
> >> questions:
> >> is there a possibility to solve that, except "spann disable on vlan
> >> X"
> >> or "spann bpdu filter enable" on switches, or the same vlan X on
> >> both ends ? can i filter somehow bpdu throught the eompls tunnel ?
> >>
> >> thank you,
> >> liviu.
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