Re: Cisco MC-LAG

Hi Aaron,

I think the point is, MC-LAG on a pair of Vendor X devices should appear as
a regular LAG to Vendor Y and the proprietary implementation shouldn't
matter.

The internal state management, sync between an MC-LAG pair happens out of
band to the MC-LAG physical interfaces, however userplane connectivity
verification would occur between the MC-LAG peer via the physical
interfaces (this may be using BFD or a VRRP like protocol such as SRRP if
it was an Alcatel-Lucent platform)

If there is uncertainty, the question should be raised with the non-Cisco
vendors technical pre-sales teams for details on interoperability testing
that have been done - they should be able to confirm if they have executed
it themselves in their labs or in another customers environment.

Cheers,
Adam

On Fri, Apr 13, 2012 at 5:18 AM, Aaron <aaron1_at_gvtc.com> wrote:

> I just read this... " Its implementation varies by vendor. "
>
> http://en.wikipedia.org/wiki/MC-LAG
>
> MC-LAG, or Multi-Chassis Link Aggregation Group, is a type of LAG with
> constituent ports that terminate on separate chassis, thereby providing
> node-level redundancy. Unlike link aggregation in general, MC-LAG is not
> covered under IEEE 802.1AX-2008. Its implementation varies by vendor.
>
> Aaron
>
>
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> khan.sirhan_at_gmail.com
> Sent: Thursday, April 12, 2012 10:49 AM
> To: Edmore Chingwena
> Cc: groupstudy
> Subject: Re: Cisco MC-LAG
>
> Dude
>
> I doubt anyone would have hands on experience with this, best you sniff and
> see if non vendor devices speak the same language.
> Sent via my BlackBerry from Vodacom - let your email find you!
>
> -----Original Message-----
> From: Edmore Chingwena <chingwenaed_at_gmail.com>
> Date: Thu, 12 Apr 2012 17:05:50
> To: Sirhan Khan<khan.sirhan_at_gmail.com>
> Cc: groupstudy<ccielab_at_groupstudy.com>
> Subject: Re: Cisco MC-LAG
>
> Hi Sirhan
>
> The CEs talk to each other over (VLL on the upstream and VPLS downstream
> connection-DUAL connection) So at Layer 2 do not have VRRP as an option My
> question is am seing what looks like compatibility issues between Cisco
> MC-LAG and a non-cisco device so wanted to confirm is cisco MC-LAG works
> well with other vendors. I have this working well with a single chasis
> cisco
> ASR and two non-cisco devices.
>
>
>
>
>
> On 12 April 2012 16:14, Sirhan Khan <khan.sirhan_at_gmail.com> wrote:
>
> > Keep it simple dude, VRRP between CE if you manage it.
> >
> > On Wed, Apr 11, 2012 at 10:03 PM, Edmore Chingwena
> > <chingwenaed_at_gmail.com
> > > wrote:
> >
> >> Hi Experts
> >>
> >> I wish to check the following
> >>
> >> 1. Does Cisco MC-LAG work well with other vendor implementation in a
> >> cenerio where you have 2 Cisco and 2 Non-Cisco interconnected by
> >> single links forming a square one Cisco to one non Cisco .
> >>
> >> Provided the above works well, which is a better solution MC-LAG or
> >> use of VRRP for a CE devices conneced to two other CEs(for redundancy
> >> purpoces) over a L2 MPLS based network from another vendor eg
> >> Juniper/Alcatel
> >>
> >> The question is whether to configure VRRP on the CE devices or MC-LAG
> >> between the PE from the MPLS provider and the two CE facing the MPLS
> >> cloud
> >>
> >> The fist CE(Remote side) connects to One PE(No MC-LAG/VRRP) the other
> >> two
> >> CE(MC-LAG/VRRP) connect to two PEs at one location providing node and
> >> link redundacy
> >>
> >>
> >> Regards
> >>
> >>
> >> Blogs and organic groups at http://www.ccie.net
> >>
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>
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Received on Fri Apr 13 2012 - 07:26:47 ART