Standby Authentication - Cisco Catalyst 6500 Series Command Reference Manual

standby authentication

standby authentication
To configure an authentication string for HSRP, use the standby authentication command. Use the no
form of this command to delete an authentication string.
Syntax Description
group-number
text string
Defaults
The defaults are as follows:
•
•
Command Modes
Subinterface configuration submode
Command History Release
SSL Services Module
Release 2.1(1)
SSL Services Module
Release 3.1(1)
Usage Guidelines
HSRP ignores unauthenticated HSRP messages.
The authentication string is sent unencrypted in all HSRP messages. You must configure the same
authentication string on all routers and access servers on a cable to ensure interoperation. Authentication
mismatch prevents a device from learning the designated hot standby IP address and the hot standby
timer values from the other routers that are configured with HSRP.
When you use group number 0, no group number is written to NVRAM, providing backward
compatibility.
Examples
This example shows how to configure "word" as the authentication string to allow hot standby routers
in group 1 to interoperate:
ssl-proxy (config-subif)# standby 1 authentication text word
ssl-proxy (config-subif)#
Catalyst 6500 Series Switch SSL Services Module Command Reference
2-96
standby [group-number] authentication text string
no standby [group-number] authentication text string
(Optional) Group number on the interface to which this authentication string
applies. Valid values are from 0 to 255 for HSRP version 1; valid values are
from 0 to 4095 for HSRP version 2. See the
page 2-116
Specifies the authentication string, which can be up to eight characters.
group-number is 0.
string is cisco.
Modification
Support for this command was introduced on the Catalyst 6500 series
switches.
The command mode for this command was changed from Proxy-VLAN to
Subinterface.
Chapter 2 Commands for the Catalyst 6500 Series SSL Services Module
for information about changing the HSRP version.
"standby version" section on
OL-9105-01