I agree that this configuration - with HSRP and tracking - could work well for connections that are initiaed outbound. You would not necessarily need BGP. R1 could do an outbound NAT to whatever IP address space had been assigned by ISP 1. R2 could do an outbound NAT to whatever IP address space had been assigned by ISP 2. The return traffic would use the correct ISP based on that address space - without any BGP.
However if you do need inbound connections - and chances are you do, BGP is the most realistic way to do it. BGP on 2500's is fine. If you are only taking the default route its probably easier on the box than running OSPF. Rob. ""John Neiberger"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > I'm not sure I understand your point. Assume the following topology: > > [R1] [R2] > | | > | | > \----------------------/ > | > [HOST] > > The two border routers are R1 and R2 and each have a connection to an > ISP. HSRP is configured to track the WAN link. The default gateway on > the host is the HSRP standby ip address. If either WAN link goes down, > the relevant router--because it is tracking the WAN link--will notify > the other router that it is no longer eligible and the other router will > take over. > > Why are you saying that the perceived uptime to the host would not > increase using this method? As I see it, unless both links go down, the > downtime would be quite minimal. > > Thanks, > John > > >>> "Hire, Ejay" 2/25/02 11:24:23 AM >>> > Come on guys, Think about it for a minute. Do you really think the > router > is failing, or is his downtime caused by the wan link? HSRP won't > significantly increase your uptime if the wan link is failing and he > has to > manually change his server's IP/default gateway to switch to the other > link. > > A diferent way to think of it... If you had a car with no brakes and > a > broken tail-light, which would you fix first? > > -Ejay > > > -----Original Message----- > From: Ladrach, Daniel E. [mailto:[EMAIL PROTECTED]] > Sent: Monday, February 25, 2002 11:48 AM > To: [EMAIL PROTECTED] > Subject: RE: TWO ISP AND ONE FAILURE [7:36371] > > > Run HSRP between the two cisco routers and then point your default > gateway > to the VIP address. > > Daniel Ladrach > CCNA, CCNP > WorldCom > > > -----Original Message----- > From: Yassel Omar Izquierdo Souchay [mailto:[EMAIL PROTECTED]] > Sent: Monday, February 25, 2002 10:11 AM > To: [EMAIL PROTECTED] > Subject: TWO ISP AND ONE FAILURE [7:36371] > > > Hello i have a frecuent porblem with one of my isp, i have two cisco > routers > and each one to different isp. Frequentily i have to change the gateway > of > one of my servers, because one isp is failure. > I want to know if with one of BGP, OSPF, RIP, NAT or other protocol i > could > do the change automatically to the other active isp. > It happening me right now. And when i have to do that i have to reset > one of > my servers.. :S. Is a costs operatrion its a mail server. > So if somebody knows how to resolve between routers with different isp > each > one, how to route accross the other good gateway. > > Thnx in advance > Yassl Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=36430&t=36371 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
