DSW121(config-if)#standby 47 priority 151
DSW121(config-if)#standby 47 preempt
*Mar  1 00:10:33.991: %HSRP-6-STATECHANGE: Vlan1 Grp 47 state Standby -> Active
*Mar  1 00:11:13.095: %HSRP-6-STATECHANGE: Vlan1 Grp 47 state Active -> Speak
DSW121(config-if)#standby 47 priority 153
*Mar  1 00:11:21.891: %HSRP-6-STATECHANGE: Vlan1 Grp 47 state Speak -> Active
DSW121(config-if)#exit
DSW121(config)#^Z
DSW121#debug standby ?
  errors   HSRP errors
  events   HSRP events
  packets  HSRP packets
  terse    Display limited range of HSRP errors, events and packets
  <cr>
DSW121#debug standby events
HSRP Events debugging is on
DSW121#
*Mar  1 00:12:04.071: HSRP: Vl1 Grp 47 Active: j/Coup rcvd from higher pri router (155/172.16.10.122
)
*Mar  1 00:12:04.075: HSRP: Vl1 Grp 47 Active router is 172.16.10.122, was local
*Mar  1 00:12:04.079: HSRP: Vl1 Grp 47 Standby router is unknown, was 172.16.10.122
*Mar  1 00:12:04.079: HSRP: Vl1 Grp 47 Active -> Speak
*Mar  1 00:12:04.083: %HSRP-6-STATECHANGE: Vlan1 Grp 47 state Active -> Speak
DSW121#
*Mar  1 00:12:04.083: HSRP: Vl1 Grp 47 Redundancy "hsrp-Vl1-47" state Active -> Speak
*Mar  1 00:12:04.087: HSRP: Vl1 Redundancy server "hsrp-Vl1-47" update, Active -> Speak
DSW121#

 

DSW121#sh standby
Vlan1 - Group 47
  State is Standby
    15 state changes, last state change 00:00:48
  Virtual IP address is 172.16.10.10
  Active virtual MAC address is 0000.0c07.ac2f
    Local virtual MAC address is 0000.0c07.ac2f (v1 default)
  Hello time 3 sec, hold time 10 sec
    Next hello sent in 2.596 secs
  Preemption enabled
  Active router is 172.16.10.122, priority 155 (expires in 9.596 sec)
  Standby router is local
  Priority 153 (configured 153)
  IP redundancy name is "hsrp-Vl1-47" (default)
DSW121#

!<#======Shutdown of DSW122==========#>


*Mar  1 00:54:07.747: HSRP: Vl1 Grp 47 Standby: c/Active timer expired (172.16.10.122)
*Mar  1 00:54:07.751: HSRP: Vl1 Grp 47 Active router is local, was 172.16.10.122
*Mar  1 00:54:07.755: HSRP: Vl1 Grp 47 Standby router is unknown, was local
*Mar  1 00:54:07.755: HSRP: Vl1 Grp 47 Standby -> Active
*Mar  1 00:54:07.759: %HSRP-6-STATECHANGE: Vlan1 Grp 47 state Standby -> Active
DSW121#
*Mar  1 00:54:07.759: HSRP: Vl1 Grp 47 Redundancy "hsrp-Vl1-47" state Standby -> Active
*Mar  1 00:54:07.763: HSRP: Vl1 Redundancy server "hsrp-Vl1-47" update, Standby -> Active
DSW121#
*Mar  1 00:54:10.771: HSRP: Vl1 Grp 47 Redundancy group hsrp-Vl1-47 state Active -> Active
DSW121#
*Mar  1 00:54:13.775: HSRP: Vl1 Grp 47 Redundancy group hsrp-Vl1-47 state Active -> Active
DSW121#sh standby
Vlan1 - Group 47
  State is Active
    16 state changes, last state change 00:00:55
  Virtual IP address is 172.16.10.10
  Active virtual MAC address is 0000.0c07.ac2f
    Local virtual MAC address is 0000.0c07.ac2f (v1 default)
  Hello time 3 sec, hold time 10 sec
    Next hello sent in 1.436 secs
  Preemption enabled
  Active router is local
  Standby router is unknown
  Priority 153 (configured 153)
  IP redundancy name is "hsrp-Vl1-47" (default)
DSW121#sh standby bri
                   P indicates configured to preempt.
                   |
Interface Grp  Pri P State   Active          Standby         Virtual IP
Vl1       47   153 P Active  local           unknown         172.16.10.10
DSW121#

!<#======Switch on of DSW122==========#>

*Mar  1 01:20:43.827: HSRP: Vl1 Grp 47 Active: j/Coup rcvd from higher pri router (155/172.16.10.122
)
*Mar  1 01:20:43.839: HSRP: Vl1 Grp 47 Active router is 172.16.10.122, was local
*Mar  1 01:20:43.843: HSRP: Vl1 Grp 47 Active -> Speak
*Mar  1 01:20:43.843: %HSRP-6-STATECHANGE: Vlan1 Grp 47 state Active -> Speak
DSW121#
*Mar  1 01:20:43.847: HSRP: Vl1 Grp 47 Redundancy "hsrp-Vl1-47" state Active -> Speak
*Mar  1 01:20:43.851: HSRP: Vl1 Redundancy server "hsrp-Vl1-47" update, Active -> Speak
DSW121#
*Mar  1 01:20:53.835: HSRP: Vl1 Grp 47 Speak: d/Standby timer expired (unknown)
*Mar  1 01:20:53.839: HSRP: Vl1 Grp 47 Standby router is local
*Mar  1 01:20:53.839: HSRP: Vl1 Grp 47 Speak -> Standby
*Mar  1 01:20:53.843: %HSRP-6-STATECHANGE: Vlan1 Grp 47 state Speak -> Standby
DSW121#
*Mar  1 01:20:53.843: HSRP: Vl1 Grp 47 Redundancy "hsrp-Vl1-47" state Speak -> Standby
*Mar  1 01:20:53.847: HSRP: Vl1 Redundancy server "hsrp-Vl1-47" update, Speak -> Standby
DSW121#sh standby bri
                   P indicates configured to preempt.
                   |
Interface Grp  Pri P State   Active          Standby         Virtual IP
Vl1       47   153 P Standby 172.16.10.122   local           172.16.10.10
DSW121#

DSW121#sh cdp neigh
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
                  S - Switch, H - Host, I - IGMP, r - Repeater

Device ID        Local Intrfce     Holdtme    Capability  Platform  Port ID
DSW122           Fas 1/2            164         R S I     3660      Fas 1/2
DSW122           Fas 1/1            163         R S I     3660      Fas 1/1
DSW121#