What is the maximum number of HSRP standby groups that can be configured on a Cisco
router?

A.
16

B.
32

C.
64

D.
128

E.
256

Explanation:
The limit of 256 is an HSRP protocol limit with respect to the range that the HSRP group can
be set to. If you look at RFC 2281 Cisco HSRP, you’ll see this specified in section 5.1:
Group: 1 octet
This field identifies the standby group. For Token Ring, values between 0 and 2 inclusive are
valid. For other media values between 0 and 255 inclusive are valid.