[c-nsp] Policy Based Routing on PE

[Mateusz Błaszczyk]

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2008/11/13 Brandon Price
:
> The tunnel option could work the problem is the SOURCE is behind a
> Juniper netscreen and I don't think they support gre tunnel
> termination..
> Also I don't want this active all the time, I want it to switch
> dynamically.
>
> Maybe there is something else that would accomplish what I am trying to
> do.
>
> I tried to make a little ASCII diagram, hopefully it comes through ok:
>
>
>              SOURCE Voip LAN 206.72.96.0
>               |
>               FW (juniper)
>               |
>    PE2-------PE1
>    | |        |
> dsl1| |dsl2    |
>    | |        |T1
>    | |        |
>    | +------- |
>    +--------CE1 (cisco)
>              |
>              |
>          CUST LAN 10.10.10.0
>
>
> Basically My customers primary link to me is a T1 to PE1 with QOS
> enabled for VOICE traffic to my voip servers and switches at
> 206.72.96.0. these are accessed via FW (juniper netscreen). In normal
> operation the route for the CUST LAN through the t1 has the most
> favourable weight, and traffic never hits PE2.
>
>
> Now if the T1 goes down, dsl1 to PE2 will now have the most favorable
> route to the lan, HOWEVER at this point I want traffic with a SOURCE of
> the voip netblock to take dsl2 to get to the lan. This is where I am
> stuck. How to use PBR on the ingress to PE2....
>

I don't see any other solution but to prioritize (QoS) SOURCE traffic
on BOTH dsl links.

Best Regards,

- -mat
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