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

[Doug Hanks]

Spanning tree?

-----Original Message-----
From: juniper-nsp-bounces at puck.nether.net [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Gökhan Gümüs
Sent: Monday, March 14, 2011 12:14 PM
To: Keegan Holley
Cc: juniper-nsp at puck.nether.net
Subject: Re: [j-nsp] Too much packet loss during switchover on MPLS network

Thanks for the updates...
Yes i enabled node-link-protection and link protection respectively.
Results are same. LSP change from primary to secondary occurs immediately as
i can see it from mpls logs.
I have no problem on it.
I am talking about customer traffic. Customer is sending ping packets
continuosly and during that time i shut one interface down which is
triggering a transition from primary to secondary.After that customer
experienced packet loss for 41 seconds.
MPLS LSPs are being used for VPLS traffic. I have no visibility on Layer 3
side on customer.

Kind regards,
Gokhan Gumus

2011/3/14 Keegan Holley <keegan.holley at sungard.com>

>
> 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
>> > _______________________________________________
>> > juniper-nsp mailing list juniper-nsp at puck.nether.net
>> > https://puck.nether.net/mailman/listinfo/juniper-nsp
>> >
>>
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