[c-nsp] Packet Loss During the Backbone Network Converge

[Xu Hu]

Yes, i configure the reoptimize 25.
The PE just have 20 subnet routes, Active Tunnel is four, backup Tunnel is
also four, then about 4 mid-point Tunnel.

2012/7/28 Pete Lumbis <alumbis at gmail.com>

> How many routes and tunnels are on the PEs?
>
> Have you modified any of the TE timers from their defaults?
>
> On Thu, Jul 26, 2012 at 9:43 AM, Xu Hu <jstuxuhu0816 at gmail.com> wrote:
> > Hi All,
> >
> > Below is the network topology, i ping from CE-2 to CE-1, during i
> shutdown
> > the PE-4, have some packet drops.
> > CE connect to the backbone network using HSRP, the hear beat is through
> the
> > CE switch. PE-1 and PE-3 is the active gateway, PE-2 and PE-4 is the
> > standby one.
> >
> > PE equipment running OSPF as IGP, then on the top having MP-iBGP, MPLS
> VPN,
> > MPLS TE auto-tunnel.
> >
> > Normally i send traffic from CE-2 to CE-1 will use the path
> > "CE-2>PE-3>PE-1>CE-1".  The active tunnel from PE-3 to PE-1 is directly
> > path, the backup tunnel is path through PE-4 to PE-2 to PE-1.
> > So when i shutdown the router of PE-4, the active tunnel should be no
> > impact, but there is some packet drops. Don't understand why.
> >
> > Firstly, i think it because of the HSRP, then i ping from PE-3 to CE-1
> > (Under vrf) when i shutdown PE-4, but the result is also have packet
> drops.
> > So i think is because of backbone network converge. But i am not sure
> which
> > part will need to converge.
> >
> >    <--CE-1-->
> >      |          |
> >      |          |
> >      |          |
> >     PE-1----PE-2
> >      |          |
> >      |          |
> >      |          |
> >     PE-3----PE-4
> >      |          |
> >      |          |
> >      |          |
> >     <--CE-2-->
> >
> > Will appreciate for any comments.
> >
> > Best Regards,
> > Hu Xu
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