Running BGP on a 2500 is a really good way to "let the smoke out" of the router. You don't have the memory needed to hold the tables and the processor would always be busy.
The source-sensitive policy routing you are talking about will determine which next hop to use based on the source address, but I don't think this is what you want to do. You probably have a static default route to ISP1 currently. If you add a second static default to ISP2 with an equal cost the router will do _per-destination_ load balancing. That is, each new destination will alternate between ISPs. You won't get any additional redundancy, and you aren't guaranteed of taking the best path to each destination (as you would with BGP) but you will be able to use more bandwidth. You also mention that the router is running 11.0 code. You should consider upgrading the code and possibly get the Firewall Feature set. Ben Setnick -----Original Message----- From: Eric Schroeder [mailto:[EMAIL PROTECTED]] Sent: Thursday, December 06, 2001 12:18 PM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: Source-sensitive Routing ... 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 ============ -------------------------------------------------
