could u give us more info pls, as far as the IP's that you will be using. wasn't it u that wanted to assign 2 ip's for each server you have? if that is so,u can do the following: creat 2 VLAN's on ur switch. creat 2 subinterfaces on the router(must have fast ether) for the vlans. PBR every thing from ISP A to VLAN A, both ways. PBR every thing from ISP B to VLAN B, both ways. make sure the servers don't symetrically route the packets. with the above, u will have control over traffic that crosses ur router, but then which IP will the clients use, depends on the DNS config, wether it will load balance on DNS queries is also another issue, so more or less u will have no control over traffic coming to ur network.
if you had ur own net block, it would be easy to load balance, u'd have to call ur ISP's they will give u a community that u will joing from which they will load balance, but you will need BGP, of courrse. but please give more information to further think it out. ""Terry Oldham"" a icrit dans le message de news: [EMAIL PROTECTED] > The T1's are from different providers, Qwest and Sprint. And no we will not > be running BGP... > > > ""Troy Leliard"" wrote in message > news:[EMAIL PROTECTED] > > First big question, are your T1's from the same provider, or from a > > different provider, and thus different "public" ip address space? If it > is > > from a different provider, you may well run into some problems with NAT. > > > > Say for example, client A connects to your webserver (via ISP A's public > IP > > address that is assigned to you, say x.x.x.x) which is then Nat'd to your > > internal RFC1918 address That will work all fine and dandy, but what > about > > if your default gateway is ISP B's T1. Outbound packets, returning to > > Client A, will be NAT'd to ISB B's outside address, say y.y.y.y. If > Client > > A is behind a stateful firewall, return packets will be dropped, as it > will > > have ISP B's SRC address, and it will be expecting ISP A's. > > > > There are a number of ways around this, but I will wait for more detauls > > before going on. Presumably you are not / will not be running BGP, and > have > > your own AS? > > > > Terry Oldham wrote: > > > > > > Hello all, > > > > > > I am attempting to setup a Cisco 1721 Router with load > > > balancing and > > > NAT so that we can provide a dual T1 connection to the network. > > > This is the > > > first time I have done anything like this and I was wanting to > > > know if > > > anyone had any good pointers they could give me or any commands > > > that I > > > should beware of or add. > > > > > > Thanks, > > > > > > Terry O Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=64912&t=64904 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
