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| 6.4 |  | HSRP Configuration |
| 6.4.9 |  | Troubleshooting HSRP |

Prior to IOS release 12.1, the HSRP debugging command was relatively simple. To enable HSRP debugging, the debug standby command would be used to enable output of HSRP state and packet information for all standby groups on all interfaces.

A debug condition was added in IOS release 12.0(2.1) that allows the output from the standby debug command to be filtered based upon interface and group number. The command utilizes the debug condition paradigm introduced in IOS release 12.0, as follows: debug condition standby interface group. The interface specified must be a valid interface capable of supporting HSRP.

The debug conditions may be set for groups that do not exist, thereby allowing capture of debug information during the initialization of a new group.

The standby debug order must be configured for any debug output to be produced. If no standby debug conditions are specified output is produced for all groups on all interfaces. Configuring at least one standby debug condition will cause the output to be filtered.