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.
not so fast
16 is the max on SOME SUPERVISON engines: WSx6K .
on a 2811 or 7200 you SHOULD be expecting different answers.
look it up.
256 on others.
and 3750E = 16
I’m googling this and getting a different answer for EVERY model.
You’ll have to cite a model in order to really know the answer.
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Also the HSRP version.
v1 = 256
v2 = 4096
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/command/fhp-cr-book/fhp-s2.html#wp2768396036
Syntax Description
group-number = (Optional) Group number on the interface for which HSRP is being activated. The default is 0. The group number range is from 0 to 255 for HSRP version 1 and from 0 to 4095 for HSRP version 2.
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