One way to do this is to use BGP.  This load balances ok if you have two 
Teir 1 providers, but will not load balance otherwise.  The advantage is 
this is the only way to provide uptime if one of the ISPs goes down unless 
you do NAT on the Cisco 2514.  You may have problems running BGP on a 
2514, but I think this will work as long as you only get routes to connect 
hosts from each ISP, and then set the default route to the least used 
link. 

Hope this helps.

Eric Schroeder





[EMAIL PROTECTED]
12/05/2001 09:44 PM

 
        To:     [EMAIL PROTECTED]
        cc: 
        Subject:        Source-sensitive Routing ...


Dear memebers,
                                 I have the following network 
configuration:

                 --------------------------------------------------------
                 |                                               |
                 |                                   10.x.x.x    |
                 |                                               |
                 --------------------------------------------------------
                                                                 |
                                                                 |
                                                 ----------------------
                                                 | Dual Homed Gateway |
                                                 ----------------------
                                                                 |
                                                                 |  
                                                 --------+-------------
                                                 | Cisco 2514 Dual LAN |
                                                 |      Router     |
                                                 |        |
                                                 | wan1  wan2  |
                                                 ---+------------+-----
                                                    |  |
                                                    |  |
                                                    |  |
                                       ISP1 |                            | 
ISP2
                                 ========================================
                                 +                       +
                                 +                               INTERNET  
                 +
                                 +                               +
                                 ========================================

All our clients in the private network address (10.x.x.x). Using the
Proxy Server at Dual homed gateway, these clients get connected to
Internet using ISP1 link. Recently we have received another link for
Internet connection from ISP2. Hence we are planning to route some of the
clients of private network address(10.x.x.x) through ISP1 link and the
remaining ones through ISP2 link, using Cisco 2514 Dual LAN Router
running IOS software 11.0. After reading the Cisco documents, I came to
know that this is possible through SOURCE-SENSITIVE routing at the
Router.

I want to know the followings:
1. Is there any alternative way(s) to achieve this goal using the same 
   router having two WAN interfaces?
2. What are the security issues related to SOURCE-SENSITIVE routing ?

Waiting for your suggestions ....

Rakesh Kumar
============


-------------------------------------------------




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