Standby authentication

Use this command to specify the key used to authenticate HSRP packets received from other routers. Use the no form to delete an authentication string.

Syntax

standby [group] authentication string no standby [group] authentication

•group - Identifies the HSRP group. (Range: 0-255)

•string - Authentication string. (Range: 1-8 alphanumeric characters)

Default Setting

Group number: 0

String: not defined

Command Mode

Interface (VLAN)

Command Usage

•All routers in the same HSRP group must be configured with the same authentication string. The authentication string is sent unencrypted in all HSRP messages.

•When an HSRP packet is received from another router in the group, its authentication string is compared to the string configured on this router. If the strings match, the message is accepted. Otherwise, the packet is discarded. If the authentication strings do not match, this router will not be able to learn the designated address for the group and timer values from other routers. However, even if authentication fails, this cannot prevent a router from taking over as the master router if it has the highest priority in the group.

•Priority takes precedence over authentication. In other words, if a router is configured with the standby priority command to have the highest priority in the group, but does not have an authentication string, or is configured with the wrong string, it will still take over as the active master.

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SMC Networks SMC8612XL3 F 1.0.1.3 manual Standby authentication, Group number String not defined

Models: SMC8612XL3 F 1.0.1.3