Re: linux failover (redundant internet/dial backup)

On Feb 26, 5:31 am, mdiac...@xxxxxxxxx wrote:
I have question about Linux routing I guess. I want to create a
backup connection to the internet. I will have a DSL line to the
internet and a dialup modem for backup. What I want to do is put a
higher metric on the dial up line. How will it know to switch over to
the dial up line when the Ethernet line is down. Which distribution
will work for this, I will have two Ethernet cards and a modems. Do I
need a default route for my main internet provider. Thanks Mike D

The usual way this is handled is to have two default routes. The
higher-priority one uses your DSL and the lower-priority one uses your
dialup link. If the DSL route goes away (you will need to make sure
the route goes away if the link is inoperative), packets will take the
lower-priority route, which will trigger your dialup link to dial.

This is a somewhat tricky thing to set up. Google is your friend. Here
are the things you need to do:

1) Arrange things so that if your DSL link is not working, the default
route goes away. A route will go away automatically if its gateway is
not reachable.

2) Create a lower-priority default route that will cause your dialup
to auto-dial.

3) Test everything.

DS
.

Relevant Pages

  • Re: DSL and ADSL whats the difference? is it simple to make a dsl con
    ... I might get SBC/ATT high speed internet since it's available on my area. ... DSL is a system for carrying Internet service over the phone lines, ... Many people have dialup modems in their computers. ... With a NAT router, ...
    (microsoft.public.windowsxp.network_web)
  • Re: Why Only DSL, Not Dial Up?
    ... u can do it with dialup, but the frame rate will be low, say 2 to 4 frames ... them thars' some fierce competition goimg on with those internet providers ... cable; no DSL; only the Web TV box and electricity. ...
    (sci.electronics.repair)
  • Re: What is a default route??
    ... If I have load balancing in place, and I believe I do, then if one DSL ... out, would I need to change my default route, ie: ... >> Thus is the default route goes down, there is no internet traffic. ...
    (comp.os.linux.networking)
  • Re: safe mode with networking
    ... won't have access if you're on dialup, and I'm not certain about DSL. ... you should be able to access the internet. ... this theory about cable access, I am currently in Safe Mode with Networking ...
    (microsoft.public.windowsxp.perform_maintain)
  • cannot find server
    ... what type of connection, dialup, DSL, Cable? ... Can you still use the internet with other programs? ...
    (microsoft.public.windows.inetexplorer.ie6.browser)