What is new in HSRPv2?
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A. B. C. D.B
Hot Standby Router Protocol (HSRP) is a Cisco proprietary protocol that provides redundancy for IP networks, ensuring that there is always a backup router ready to take over in case of failure. HSRPv2 is the updated version of HSRP that introduces new features and improvements over its predecessor, HSRPv1.
The correct answer to the question is:
B. A greater number in the HSRP group field
In HSRPv1, the HSRP group number was limited to a range of 0 to 255, which could be a problem in large networks where more than 255 virtual routers might be needed. HSRPv2 extends this range to 4095, allowing for a greater number of HSRP groups and thereby enabling more flexibility in network design.
The other options listed in the question are incorrect, but here is a brief explanation of each one:
A. Preempt
Preemption is a feature that allows a higher priority router to take over as the active router if it becomes available. HSRPv1 already had this feature, so it is not new in HSRPv2.
C. Multiple backup routers
HSRPv1 only allows for one active router and one standby router. HSRPv2 also allows for multiple backup routers to be designated, which can help to increase redundancy and availability.
D. Higher priority values
HSRPv2 does allow for higher priority values than HSRPv1 (up to 4096), but this is not a major new feature, as HSRPv1 already allowed for priority values up to 255. The increased priority values in HSRPv2 simply provide more granularity for assigning priorities to routers.