[j-nsp] auto b/w mpls best practice -- cpu spikes

[tim tiriche]

.o issues with convergence or suboptimal paths.  The noc is constantly
seeing high cpu alerts and that was concerning.  Is this normal in other
networks?

Running 14.1R7.4 with mx480/240 mix.
I usually follow the code listed here:
https://kb.juniper.net/InfoCenter/index?page=content&id=KB21476

Which code version have these optimization happened in?


On Wed, Sep 12, 2018 at 2:11 AM Saku Ytti <saku at ytti.fi> wrote:

> Hey Tim,
>
> I'd optimise for customer experience, not CPU utilisation. Do you have
> issues with convergence time, suboptimal paths?
>
> Which JunOS you're running? There are quite good reasons to jump in
> recent JunOS for RSVP, as you can get RSVP its own core, and you can
> get make-before-break LSP reoptimisation, which actually works
> event-driven rather than timer based (like what you have, causing LSP
> blackholing if LSP convergence lasts longer than timers).
>
>
>
>
> On Wed, 12 Sep 2018 at 08:05, tim tiriche <tim.tiriche at gmail.com> wrote:
> >
> > Hi,
> >
> > Attached is my MPLS Auto B/w Configuration and i see frequent path
> changes
> > and cpu spikes.  I have a small network and wanted to know if there is
> any
> > optimization/best practices i could follow to reduce the churn.
> >
> > protocols {
> >     mpls {
> >         statistics {
> >             file mpls.statistics size 1m files 10;
> >             interval 300;
> >             auto-bandwidth;
> >         }
> >         log-updown {
> >             syslog;
> >             trap;
> >             trap-path-down;
> >             trap-path-up;
> >         }
> >         traffic-engineering mpls-forwarding;
> >
> >         rsvp-error-hold-time 25;
> >         smart-optimize-timer 180;
> >         ipv6-tunneling;
> >         optimize-timer 3600;
> >         label-switched-path <*> {
> >             retry-timer 600;
> >             random;
> >             node-link-protection;
> >             adaptive;
> >             auto-bandwidth {
> >                 adjust-interval 7200;
> >                 adjust-threshold 20;
> >                 minimum-bandwidth 1m;
> >                 maximum-bandwidth 9g;
> >                 adjust-threshold-overflow-limit 2;
> >                 adjust-threshold-underflow-limit 4;
> >             }
> >             primary <*> {
> >                 priority 5 5;
> >             }
> >         }
> > _______________________________________________
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>
>
>
> --
>   ++ytti
>