I did a similar config at a previous contract and I can't seem to find my notes.
But yes, HRSP was still used for the "physical" breakdown and I used policy routing and route maps with BGP to move the dynamic routing. I originally wanted to use OSPF but the trick was trying to find a way to change routing with the ethernet port still showing "up". After moving to BGP and using route maps and policy routing, I was able to get BGP to stop announcing out the bad route. Sorry I don't any example code...... guess I should have saved it for my personal use (I was kinda happy with myself at the time as it had took a good week to figure it out - I wasn't a BGP expert) As I said before, floating statics also work. Kevin Wigle ----- Original Message ----- From: "kim" To: "Kevin Wigle" ; Sent: Saturday, 17 November, 2001 21:10 Subject: Re: HSRP on Cisco with 2 Ehternet to ISP [7:26528] > Thank you for response, > > The problem seems when a link is down (not PPP, but > EthernetFasE0/1 -local ->ISP -Catalyst- > ISP-router ATM-PVC) ,local router > will not see at the connection is down and continue announes its LAN out. > So is BGP and HSRP will help for redundant solution ? > > Regards > > > > > I've been there a few times. > > > > The issue is that ethernet does not depend on keep alives from the distant > > end like a wan link. Ethernet sends itself keepalives. > > > > So .... probably a net diagram would be like: > > > > local router ----> ISP switch on site ------> ISP network ----> > destination > > .............. > > > > Unless the local ISP switch goes down the local router will see a link and > > it will never "go down" if anything past the local switch is dead. > > > > But HSRP is still useful to watch if the physical interface dies (track > the > > interface) but to guard against an upstream failure I have used floating > > statics to switch routes. Of course this is a manual config and if > addresses > > change you have to change the config. > > > > Getting fancier involved using BGP and route maps - which made it dynamic. > > > > Kevin Wigle > > > > > > ----- Original Message ----- > > From: "Brown, Ricky" > > To: > > Sent: Friday, 16 November, 2001 15:40 > > Subject: RE: HSRP on Cisco with 2 Ehternet to ISP [7:26528] > > > > > > > Try using the track interface command on each router. > > > > > > -----Original Message----- > > > From: kim [mailto:[EMAIL PROTECTED]] > > > Sent: Friday, November 16, 2001 2:56 PM > > > To: [EMAIL PROTECTED] > > > Subject: HSRP on Cisco with 2 Ehternet to ISP [7:26528] > > > > > > > > > It is routing problem when configure 2 routers 2621( 2Ethernet)have the > > > same > > > LAN ? > > > > > > router A :fastE0/0 is LAN fastE0/1 (10Mbs)Link to ISP router 1 > > > router B FastE0/0 ls LAN fastE0/1 (10Mbs) link to ISP router 2 > > > > > > router A is active > > > router B is backup > > > When one of LINK (muliti access connection )is going down, will router > > > update > > > at connection breakdown ? > > > > > > > > > > > > Regards > > > > > > Kim Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=26654&t=26528 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
