Hi list,
I have a problem I thought was simple first, but now I'm stuck.
In a nutshell, it's about redundant uplinks at an outside location.
Crude ASCII-Art follows:
Internet
| |
+------------+
| cisco with |
| uplinks |
+------------+
| | ATM interface
+----------+ ...
| alvarion | |
| wireless | +-------+
| base | | DSL |
+----------+ | modem |
||| +-------+
+------------+ |
| wireless | |
| subscriber | /
+------------+ /
| /
+-------------+
| small linux |
| box |
+-------------+
|
target net
The target net is connected via a 20 MBit wireless connection which
should be the "normal" route, and a 2 MBit DSL connection as backup.
Switching to the backup line should work automatically. There are link
networks between the linux box and the DSL modem and between the linux
box and the base (subscriber is acting as a bridge).
We control all the equipment, including the cisco. So I thought I'd use
quagga and build a small OSPF or RIP between the linux box and the
cisco where the linux box announces the target net. The wireless route
would have higher priority because of the higher line speed.
But how do I set the "default route" on the box? I don't want to
redistribute BGP into OSPF on the cisco, it knows 2x20,000 routes from
two uplink peers and the linux box is really small (300 MHz Celeron
with 128 MB RAM).
Thanks in advance for any advice.
- Torsten
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