Um, he already has both the E0s in the same subnet and both the E1s in the same subnet, according to his config.
His drawing is confusing but I think he's got PC1 and both E0s in subnet 10.3.0.0/16, say on a hub or a switch. He's got PC2 and both E1s in subnet 10.4.0.0, on another hub or switch. If the problem isn't related to misconfiguration of the default gateway on the PCs, I do have another theory. :-) Say he pulls the E0 cable on Router 1. No problem, PC1 will start using Router2. Then he pings from PC1 to PC2. The ping will probably get there but what about the reply coming back? What happens if PC2 is using Router 1 and Router 1 has no way to send PC2's packet from itself to Router 2 due to the missing cable, not to mention lack of any routing protocol configured. Think about it! :-) Priscilla The Long and Winding Road wrote: > > ""garrett allen"" wrote in message > news:[EMAIL PROTECTED] > > i have a need for a high availability solution for a default > gateway > > configuration. just finished the ccdp and thought it might be > > interesting to try hsrp on a pair of 2514's. put some of > that theory > > to work. instead of highly resiliant i've managed to > configure it for > > mass failure. arg.., not exactly what i had in mind. now, > any time i > > take down 1 of the 4 links, the connect between 2 remote > hosts dies. > > this is in a lab (production is not a lab, production is not > a lab...) > > so it is a mystery i would like to solve, but it is not > critical. > > > > here is the basic config (hope it makes it): > > > > pc host 1 -----+----- e0 router 1, e1 ----+--------- pc > host 2 > > | | > > |----- e0 router 2, e1 ----| > > > > the routers act as a default gateway between the internal > network > > (represented by pc host 1) and the external world > (represented by pc > > host 2). i have used 10.3 and 10.4 /16 as the addresses for > each side > > of the divide. i want to run hsrp on both sets of router > interfaces so > > that in the event a router or an interface fails, the traffic > impact is > > minimized. in the real world pc host 2 will be a firewall > and there > > will be other hosts off that segment as well > > > > looks easy. sounds plausible. read the cisco docs. looks > like it > > should work. minimal incantations before tickling the > keyboard. key > > in the configs and it fires up nicely. do the show standby > thingee and > > all looks cool. can ping the 2 stations end to end. most > excellent. > > put a router in debug mode. when i pull one of the 4 router > cables the > > router goes through a state change but no bits make it to the > far end. > > not even the shiney ones. bitstream courtesy of ping. > > > > maybe i misunderstood what hsrp was suppose to do. the > configs are > > below, along with the show standby results. both are 2514's > (2 aui's) > > and both are running 12.2(1d). probably forgot to put the > interface in > > mumble mode or something equally easy. no laughter, please. > > > HSRP assumes the ehternet interfaces to be on the same subnet. > your ehternet > side is on two different subnets. hence - no failover. > > to get this to work using 2514's: > > > E0----------2514_1-----------E1 > > E0----------2514_2-----------E1 > > > the e0's on the same subnet, the e1's on the same subnet > > > > > > > > thanks in advance. > > > > router 1 > > interface Ethernet0 > > ip address 10.3.255.2 255.255.0.0 > > no ip route-cache > > no ip mroute-cache > > standby 1 priority 200 preempt > > standby 1 ip 10.3.0.2 > > ! > > interface Ethernet1 > > ip address 10.4.254.2 255.255.0.0 > > no ip route-cache > > no ip mroute-cache > > standby 2 priority 200 preempt > > standby 2 ip 10.4.254.10 > > > > > > router 2 > > interface Ethernet0 > > ip address 10.3.255.1 255.255.0.0 > > no ip route-cache > > no ip mroute-cache > > standby 1 priority 225 preempt > > standby 1 ip 10.3.0.2 > > ! > > interface Ethernet1 > > ip address 10.4.254.1 255.255.0.0 > > no ip route-cache > > no ip mroute-cache > > standby 2 priority 150 preempt > > standby 2 ip 10.4.254.10 > > > > results of show standby > > Router1#show standby > > Ethernet0 - Group 1 > > Local state is Standby, priority 200, may preempt > > Hellotime 3 holdtime 10 > > Next hello sent in 00:00:00.940 > > Hot standby IP address is 10.3.0.2 configured > > Active router is 10.3.255.1 expires in 00:00:09, priority > 225 > > Standby router is local > > 20 state changes, last state change 00:22:34 > > Ethernet1 - Group 2 > > Local state is Active, priority 200, may preempt > > Hellotime 3 holdtime 10 > > Next hello sent in 00:00:01.676 > > Hot standby IP address is 10.4.254.10 configured > > Active router is local > > Standby router is 10.4.254.1 expires in 00:00:08 > > Standby virtual mac address is 0000.0c07.ac02 > > 17 state changes, last state change 00:23:26 > > Router1# > > > > Router2#show standby > > Ethernet0 - Group 1 > > Local state is Active, priority 225, may preempt > > Hellotime 3 holdtime 10 > > Next hello sent in 00:00:01.010 > > Hot standby IP address is 10.3.0.2 configured > > Active router is local > > Standby router is 10.3.255.2 expires in 00:00:09 > > Standby virtual mac address is 0000.0c07.ac01 > > 24 state changes, last state change 00:22:04 > > Ethernet1 - Group 2 > > Local state is Standby, priority 150, may preempt > > Hellotime 3 holdtime 10 > > Next hello sent in 00:00:01.272 > > Hot standby IP address is 10.4.254.10 configured > > Active router is 10.4.254.2 expires in 00:00:09, priority > 200 > > Standby router is local > > 32 state changes, last state change 00:22:25 > > Router2# > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=64663&t=64638 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
