[j-nsp] Too much packet loss during switchover on MPLS network

[Keegan Holley]

If I were a customer I wouldn't accept that.  Especially after the first
test failed.

On Mon, Mar 14, 2011 at 4:00 PM, Doug Hanks <dhanks at juniper.net> wrote:

> Can they just ignore all the stuff that’s riding on top of your VPLS
> service and try pinging across the VPLS tunnel?  For example add secondary
> IPs to the CE like 10.0.0.0/30.
>
>
>
> *From:* Keegan Holley [mailto:keegan.holley at sungard.com]
> *Sent:* Monday, March 14, 2011 12:57 PM
> *To:* Doug Hanks
> *Cc:* Gökhan Gümüş; Diogo Montagner; juniper-nsp at puck.nether.net
>
> *Subject:* Re: [j-nsp] Too much packet loss during switchover on MPLS
> network
>
>
>
> They may be doing BGP with their own resources over the VPLS and pinging
> something that requires it to be up..  The bottom line is it doesn't take
> 41s to failover a properly working LSP to another path.
>
>
>
> 2011/3/14 Doug Hanks <dhanks at juniper.net>
>
> If it’s VPLS, the customer wouldn’t be using BGP though.  That’s why I
> mentioned STP.
>
>
>
> *From:* Keegan Holley [mailto:keegan.holley at sungard.com]
> *Sent:* Monday, March 14, 2011 12:47 PM
> *To:* Gökhan Gümüş
> *Cc:* Doug Hanks; Diogo Montagner; juniper-nsp at puck.nether.net
>
>
> *Subject:* Re: [j-nsp] Too much packet loss during switchover on MPLS
> network
>
>
>
> Another to way to check would be to figure out when you start seeing
> mac-addresses from the customer in the vpls tables.  That will mean the
> network has failed over properly.  Do you know what the customer topology
> looks like?  They could be waiting for BGP to fail over or something else
> that inherently slow.  I doubt this is a problem with your mpls config,
> especially if you see your lsp switch.  It's hard to guess without knowing
> your's or the customer's topology though.
>
> On Mon, Mar 14, 2011 at 3:42 PM, Gökhan Gümüş <ggumus at gmail.com> wrote:
>
> No, they are not using rapid ping, i can confirm it.
>
> I do not agree with Spanning tree issue.
> Just for note, i am just de-activating one circuit via CLI to trigger
> transition from primary to secondary.
>
> Gokhan
>
>
>
> 2011/3/14 Doug Hanks <dhanks at juniper.net>
>
> I'm sure they were using a rapid ping, so it didn't take anywhere near 45
> seconds.  If they were using a regular ping, however, it maybe a STP issue.
>
> Also are you using pre-signaled LSPs?
>
>
> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net [mailto:
> juniper-nsp-bounces at puck.nether.net] On Behalf Of Keegan Holley
> Sent: Monday, March 14, 2011 11:15 AM
> To: Diogo Montagner
> Cc: juniper-nsp at puck.nether.net; Gökhan Gümüş
> Subject: Re: [j-nsp] Too much packet loss during switchover on MPLS network
>
> On Mon, Mar 14, 2011 at 1:25 PM, Diogo Montagner
> <diogo.montagner at gmail.com>wrote:
>
> > Do you have FRR enabled on the LSPs ?
> >
>
> Node protection and link-protection is the same thing as fast re-route.
>
> Is it configured correctly though?  You have to configure a secondary path
> under protocols mpls and then enable it for FRR/node protection.  You can't
> just enable it and have it work.
> Also, what does the topology look like?  Could you just be waiting for
> customer routing/spanning tree?  Even without FRR your lsp's failover at
> the
> speed of your IGP when a link is shut down.  None of them take 41 seconds.
>
> >
> >
> > On Tue, Mar 15, 2011 at 12:46 AM, Gökhan Gümüş <ggumus at gmail.com> wrote:
> > > Dear all,
> > >
> > > I have a problem with one of our customer.
> > >
> > > Customer has been deployed with VPLS. We are using primary path and
> > > secondary path ( standby ) to handle VPLS traffic between sites.
> > >
> > > Within a maintenance window, we made a failover test. Customer was
> > pinging
> > > remote site continuosly and we would like to test how many packets are
> > being
> > > lost during switchover. When i triggered transition from primary to
> > > secondary, customer lost 41 packets during ping test. Then i
> implemented
> > > node-link-protection and link protection in case they help but customer
> > > experienced same amount of packet loss during transition.
> > >
> > > My question, is it a normal behaviour? From my perspective it is not a
> > > normal behaviour.
> > >
> > > Has anybody such an experince?
> > >
> > > Thanks and regards,
> > >
> > > Gokhan
> > > _______________________________________________
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> > >
> >
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