HSRP with PPP links?
Hey, just going through the CCNA class and I've been able to make a couple of crossover T1 cables and successfully bring up a Multilink interface. Now that we've covered HSRP, I am wondering if there is a real world application for using it with serial interfaces? Based on the class it is pretty much geared for Ethernet in that each router has a dedicated IP and they are connected to a switch to share the Virtual IP. So I am thinking you can't...
Regards,
Adam Tyler
HSRP is a LAN technology as such meant for Ethernet, Token-Ring and FDDI not really using serial interfaces. So this is not possible to achieve the goal of HSRP over serial interfaces.
Thank you!
-Adam
One follow up question to this....
If you did have HSRP configured on two routers.. Let's say on the Gi0/0 interface going to your LAN, then had each router connected to a remote site using two separate PPP links. If HSRP was to fail router one because Gi0/0 went down, then all LAN traffic would use the Gi0/0 interface of the failover router.. Hosts would be ok because the default Gateway still responds, and routers would figure this out because EIGRP or OSPF would remove the failed router as a viable route.
Would this work, or am I still missing something? The PPP links wouldn't really be included in HSRP, just two independent connections to the remote site. One to each router. You lose the ability to bond them, but gain hardware and circuit availability, correct?
Regards,
Adam Tyler
