[j-nsp] VPLS Multihoming on Junos - FEC confusion

[Krasimir Avramski]

Hi,

Note the junos 7.5 release introduction of
multi-homing<http://www.juniper.net/techpubs/en_US/junos/topics/reference/configuration-statement/multi-homing-edit-protocols-vpls.html>stanza
(under "routing-instances
instance-name protocols vpls site site-name") specified in FEC 128 doc.
Believe me that with 7.5 release only BGP signaling/autodiscovery was
supported -  I remember that at this time there was VPLS standard
battle<http://www.lightreading.com/document.asp?doc_id=589392>


Krasi


On 10 September 2013 17:18, Darren O'Connor <darrenoc at outlook.com> wrote:

> I understand that part, but it doesn't answer the original question.
>
> Thanks
> Darren
> http://www.mellowd.co.uk/ccie
>
>
>
> > From: per.granath at gcc.com.cy
> > To: darrenoc at outlook.com; krasi at smartcom.bg
> > CC: juniper-nsp at puck.nether.net
> > Subject: RE: [j-nsp] VPLS Multihoming on Junos - FEC confusion
> > Date: Tue, 10 Sep 2013 13:20:17 +0000
> >
> > Perhaps this is useful:
> >
> >
> https://www.juniper.net/techpubs/en_US/junos/topics/topic-map/vpls-bgp-multihoming.html
> >
> > There are two places in the configuration where you can configure VPLS
> multihoming. One is for FEC 128, and the other is for FEC 129:
> >
> > For FEC 128-routing-instances instance-name protocols vpls site
> site-name multi-homing
> > For FEC 129-routing-instances instance-name protocols vpls multi-homing
> >
> >
> > -----Original Message-----
> > From: juniper-nsp [mailto:juniper-nsp-bounces at puck.nether.net] On
> Behalf Of Darren O'Connor
> > Sent: Tuesday, September 10, 2013 3:53 PM
> > To: Krasimir Avramski
> > Cc: juniper-nsp at puck.nether.net
> > Subject: Re: [j-nsp] VPLS Multihoming on Junos - FEC confusion
> >
> > That's my thought too. However even the 12.3 VPLS configuration guide
> states FEC128 multihoming. But again showing with BGP
> >
> > Thanks
> > Darren
> > http://www.mellowd.co.uk/ccie
> >
> >
> >
> > Date: Mon, 9 Sep 2013 23:30:08 +0300
> > Subject: Re: [j-nsp] VPLS Multihoming on Junos - FEC confusion
> > From: krasi at smartcom.bg
> > To: darrenoc at outlook.com
> > CC: juniper-nsp at puck.nether.net
> >
> > Hello,
> > IMHO there is mess with docs/terms. FEC 128 multihoming as described has
> nothing to do with ldp. It's bgp signaling and autodiscovery.
> > Krasi
> >
> >
> > On 8 September 2013 22:37, Darren O'Connor <darrenoc at outlook.com> wrote:
> >
> >
> >
> >
> >
> >
> >
> > Hi list.
> >
> >
> >
> > I'm going over the VPLS multihoming options on Juniper's web site. I'm
> not concerned with LAG and MC-LAG for the moment.
> >
> >
> >
> > As far as I'm aware, FEC128 is when you are using manual discovery of
> pseudowires (LDP) - FEC129 is when you are using BGP auto-discovery.
> >
> >
> >
> > Juniper techpub for FEC129 multihoming I don't have a problem with as it
> shows how to multihome with BGP:
> https://www.juniper.net/techpubs/en_US/junos/topics/topic-map/vpls-bgp-multihoming.html
> >
> >
> >
> >
> > The FEC128 multihome techpub says that you cannot enable LDP signalling,
> you have to use BGP signalling:
> http://www.juniper.net/techpubs/en_US/junos/topics/usage-guidelines/vpns-configuring-vpls-multihoming.html
> >
> >
> >
> >
> >
> >
> > I know that you can use LDP for manual discovery and LDP will then
> signal VC labels. You can also use BGP for auto-discovery and LDP for VC
> label signalling. You can also use BGP for both.
> >
> >
> >
> > What I don't get is how you could use FEC128 with BGP signalling. Junos
> doesn't give you the option to only signal through BGP but manual discovery
> through LDP.
> >
> >
> >
> > So my question is, when exactly would the FEC128 config be used over the
> FEC129 config? If you are using BGP for signalling are you not using BGP
> for discovery at the same time?
> >
> >
> >
> > Or maybe I'm just misunderstanding something.
> >
> >
> >
> >
> >
> > Thanks
> >
> > Darren
> >
> > http://www.mellowd.co.uk/ccie
> >
> >
> >
> >
> >
> >
> >
> > _______________________________________________
> >
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> >
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> >
> >
> >
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