This solution assumes that the subnet is routable by both providers. If this is the case, then HSRP is by far the easiest solution.
CM ----- Original Message ----- From: "John Neiberger" To: Sent: Monday, February 25, 2002 7:49 PM Subject: RE: TWO ISP AND ONE FAILURE [7:36371] > 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=36435&t=36371 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
