North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: intranet
Well .. That is one way to do it .. another and I think a BETTER way would be to only use 1 set of ip's ( a set that is "portable" ) and talk bgp with both providers. This way you can move the traffic in the most efficient way . If you take routes from both of em you may get a better path to site X from provider a and a better path to site Y from provider B . This way if provider a goes down the BGP will move trafic of the link that is still "GOOD" What do the rest of ya think -Chris At 05:43 PM 8/18/98 +0800, [email protected] wrote: > >Hi all! > >Just wondering if the following is possible: > > >Situation: > >Corporate intranet is currently connected to 2 separate ISPs using 2 >different set of IP addresses. When one is down, the network has to be >reconfigured for access via the 2nd ISP. > > >Required Result: > >Corporate intranet connects to 2 ISPs. When one is down or unavailable, >traffic will automatically shift to the other connection. DNS server and >mail server remains inside the intranet. The DNS and mail servers should >not be reconfigured during any problems and should keep on working. > > >Proposed Solution: > >The 7010 router will be connected to the 2 ISPs. The 7010 will be upgraded >to an IOS that supports NAT; all IP address behind the 7010 will be treated >as internal IP addresses (to reduce reconfiguration). IP address subnets >from both ISPs will be NAT-mapped to internal IP addresses over the 7010, >including the DNS server and the mail server. > >The DNS will be configured to use their DNS as the primary name server. >The 2 ISPs' name servers will be used as secondary name servers. > >The mail server will be configured to have 2 IP address, one actual and one >virtual IP address using the network card. The DNS will have an MX 10 and >an MX 20, each pointing to one IP addresses for the network card. > > >Is this solution possible? Will it work? Did I forget anything? Any tips? > > >William > > > Christopher Gibiault LI.Net / Verio LongIsland (516) 265-0997 x 226
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