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Chapter 8
Hot Standby Routing Protocol (HSRP)
10.
Run the debug standby command on the 2501A router and view the
information.
2501A#debug stand
00:05:13: SB1:Ethernet0 Hello out 172.16.10.5 Standby
pri 100 hel 3 hol 10 ip 17
2.16.10.50
00:05:14: SB1:Ethernet0 Hello in 172.16.10.1 Active pri
100 hel 3 hol 10 ip 172.
16.10.50
00:05:16: SB1:Ethernet0 Hello out 172.16.10.5 Standby
pri 100 hel 3 hol 10 ip 17
2.16.10.50
00:05:17: SB1:Ethernet0 Hello in 172.16.10.1 Active pri
100 hel 3 hol 10 ip 172.
16.10.50
2501A#un all
All possible debugging has been turned off
RouterC#
11.
Notice that the 2501A router is transmitting standby router informa-
tion and receiving active router hellos.
12.
Unplug the cable for the 2621A router and turn on debugging on the
2501A router.
2501A#debug stand
Hot standby protocol debugging is on
RouterC#
00:06:06: SB1:Ethernet0 Hello out 172.16.10.5 Standby
pri 100 hel 3 hol 10 ip 17
2.16.10.50
00:06:07: %STANDBY-6-STATECHANGE: Standby: 1: Ethernet0
state Standby -> Active
00:06:07: SB1:Ethernet0 Hello out 172.16.10.5 Active
pri 100 hel 3 hol 10 ip 172
.16.10.50
00:06:07: SB1: Ethernet0 changing MAC address to
0000.0c07.ac01
13.
Notice that when the cable to the 2621A router was unplugged, the
state change took place. The 2501A router is now the active router.
Notice that the Ethernet MAC address is changed to the virtual MAC
address.
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