in our ministry we are going to contract with 2 ISPs to provide us with the internet service (one of them will be the main line 16 MB, and the other line will be working as a backup line). Now, here is my question, is there any router that can holds the 2 ISPs lines at the same time and have the fail over property and load balancing, or i have to use 2 different routers (we have CISCO 2821) to do the load balancing between the 2 internet lines. Thankx
There are many ways you can do.But depending on your requirement.If you are using 2 ISPs and all of ISPs are willing to do BGP then that is the right way you should do. For doing load-sharing.please check this link out.
There are several aspects of the network environment that impact how to load share which we do not yet know about your situation, such as whether you will be using public IP address space inside your network or using private address space and translating at the outbound router.
But as Thot suggests many people do want to use BGP when they are connecting to 2 separate ISPs.
I do not see any need to use 2 separate routers and believe that your 2821 should be able to handle the load sharing and the failover. The failover will be easier if just 1 router connects to both ISP.
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