[LARTC] multi-ISP connections

[LARTC] multi-ISP connections

[Yaw Ofori-Adjei]

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I would appreciate help in the follwoing regard
I have a linux box with IP 172.17.17.1 running squid-cache as transparent proxy for users on my Lan. I am fortunate to be in a building where two ISPs operate. I therefore connected to ISP1 via an ethernet through a router installed at my premises. 
 
The gateway of linux box is set to 172.17.17.2 which is the IP of this router.
I would like to set up the second ISP connection also my via ethernet cable through another router into my lan so that I can a redundant connection in case one fails and also achieve load balancing between the 2 conections. 
The IP of the second router is 10.58.85.16.
 
How do I go about solving the problem? I would appreciate all help I can get.
Thank you
Yaw
This is the network diagram
     ISP1                          ISP2
       |                                |
       |                                |
    Router1                     Router2
 (172.17.17.2)             (10.58.85.16)
       |                                |
       |                                |
==========switch 10/100===============
  |                                                       |
  |                                                       |
  |                                                       |
 Transparent Squid                       Lan Users
    (172.17.17.1)


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