[Olsr-users] Route desired destination-addresses alternatively

[Michael Rack]

Hi Jacques,

i think metric will only work when the device is going down (mii-detect) ??

There is only UDP-Traffic, how should unix know about a link lost?

I think that is a not so good solution and olsr should do the job.

Cheers,
Michael.

Jacques _ schrieb:
> Just add a backup for the other devices using metric:
>
>
> ip route add 91.205.xx.117 via 91.205.xx.50 dev tap0
> ip route add 91.205.xx.117 dev tap2 metric 30
> ip route add 91.205.xx.117 dev tap1 metric 31
>
> Jacques
>
> On Fri, Oct 17, 2008 at 1:39 PM, Michael Rack 
> <(spam-protected) 
> <mailto:(spam-protected)>> wrote:
>
>     Hi List!
>
>     I have three Internet Service Providers. In expect two DSL
>     Providers and
>     one Wireless-Provider.
>
>     My Internet-Setup look as follow:
>     -------------------------------------------------------------
>     eth0 = Wirelees Provider (2048 down / 2048 up / 18ms Latency)
>     eth1 = DSL Provider (2048 down / 2048 up / 48ms Latency)
>     eth2 = DSL Provider (4096 down / 1024 up / 40ms Latency)
>
>     Over all three interfaces there run a vpn-tunnel from salzburg
>     (austria)
>     to nürnberg (germany) with fixed ip-addresses.
>
>     VPN-Tunnel look as follow:
>     -------------------------------------------------------------
>     TUNNEL  NÜRNBERG          SALZBURG          SPEED
>     -------------------------------------------------------------
>     tap0    91.205.xx.49/30   91.205.xx.50/30   2048 down / 2048 up / 18ms
>     Latency
>     tap1    91.205.xx.53/30   91.205.xx.54/30   2048 down / 2048 up / 48ms
>     Latency
>     tap2    91.205.xx.57/30   91.205.xx.58/30   4096 down / 1024 up / 40ms
>
>     In salzburg, OLSR will send traffic via vpn over tap0 (Wireless)
>     to get
>     2048k of upstream.
>     In nürnberg, OLSR will send traffic via vpn over tap2 (DSL) to get
>     4096k
>     of downstream.
>
>     Now there is Voice-Over-IP on the traffic. 18ms is better then
>     40ms for
>     downstream.
>
>     The Asterisk-Server is located in salzburg and listen on
>     91.205.xx.117.
>     How can i route all traffic to this ip-address over tap0 to get
>     the 18ms
>     of latency for upstream reasons from Nürnberg to Salzburg?
>
>     When i do "ip route add 91.205.xx.117 via 91.205.xx.50 dev tap0"
>     telephony will break if the interface goes down on the remote side.
>
>     I like olsr do the job. If 91.205.xx.117 could not be reached via
>     tap0,
>     olsr shoud route alternative to tap2 / tap1.
>
>     Is this setup to do with olsr?
>
>     Thanks in advance,
>     Michael Rack.
>
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