Refer to the exhibit. Routers R1 and R2 are configured in an HSRP group to provide redundancy do the users
on Network A. The T1 link between R1 and Network B has failed. How will HSRP respond to the failure?
A.
R1 will change its priority but will remain active using the Frame Relay backup link to forward the traffic to
Network B
B.
R2 will assume the role of active router and willuse its T1 link to forward the traffic to Network B
C.
Both routers R1 and R2 will be active, and the traffic will be load balanced between the T1 links
D.
Both routers R1 and R2 will be inactive, and the users on Network A will lose the connectivity to Network B
Why will R2 take over and become active? They are not configured on the same standy IP address. For me it looks like a typo though but if it is correct like on the picture it doesnt make sense
OK I found the answer:
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/12-1_19_ea1/configuration/guide/3550scg/swhsrp.html#wp1051783
The standby ip interface configuration command activates HSRP on the configured interface. If an IP address is specified, that address is used as the designated address for the Hot Standby group. If no IP address is specified, the address is learned through the standby function. You must configure at least one routing port on the cable with the designated address. Configuring an IP address always overrides another designated address currently in use.
On R1 Serial 0 fails. If this was a single interface, then R2 would take over.
BUT, preempt is activated. Since Serial 1 did not fail, R1 should stay the Active router.
Even though R2 has a higher Ip address than R1, preempt should maintain R1 Active position due to preempt.
Tested on Lab.
R2 will not become active router thus the IP address is not match and in different subnet (171.16.5.100) the interface subnet is 171.16.6.0/24.
whenever you type command “standby 1 ip 171.16.5.100”, cisco IOS will notify you that IP address is in different subnet. Because of this even R1 does not recognize its standby router because R2 does not event send a HSRP hello message to the standby group, means the standby group created is “failed” on R2.
If it is not a typo, then the answer will be B. But since its typo (the worst typo error I’ve ever seen = 171.16.5 100. IP address has a space in between????) error, so even the dummy exam said the answer is B, I personally will stick to A.