This going to be straightforward configuration. But at
beginning lets see some default values for HSRP and states of device with
enabled HSRP.
Default HSRP Configuration
Feature
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The HSRP Version 2 uses a new MAC address range
0000.0C9F.F000 to 0000.0C9F.FFFF. Your MAC address corresponds to the standby
group number
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HSRP States
When in operation, HSRP devices are configured into one of
many states:
- Active – This is the state of the device that is actively forwarding traffic.
- Init or Disabled – This is the state of a device that is not yet ready or able to participate in HSRP.
- Learn – This is the state of a device that has not yet determined the virtual IP address and has not yet seen a hello message from an active device.
- Listen – This is the state of a device that is receiving hello messages.
- Speak – This is the state of a device that is sending and receiving hello messages.
- Standby – This is the state of a device that is prepared to take over the traffic forwarding duties from the active device.
Tasks
- Create VLAN's on distribution switches and access switches
- Create VLAN 10 (10.10.10.1/24), VLAN 20 (20.20.20.0/24) on DSW_3 SVI interface 10 with ip address 10.10.10.1/24 and on DSW_4 with ip address 10.10.10.2/24. Create SWI interface 20 with ip address 20.20.20.1/24 on DSW_3 and SWI interface 20 on DSW_4 wit ip address 20.20.20.2/24
- Enable routing on DSW using ip routing command.
- Enable trunking port on every connections between switches
- Enable rapid spanning tree for faster converge
- Configure port fast on access port with command spannig-tree portfast default
- Enable HSRP on DSW with standby and use number groups related with number of VLAN's
DSW3#show standby
Vlan10 - Group 10 (version 2)
State is Active
7 state changes, last state change 00:04:49
Virtual IP address is 10.10.10.254
Active virtual MAC address is 0000.0C9F.F00A
Local virtual MAC address is 0000.0C9F.F00A (v2 default)
Hello time 3 sec, hold time 10 sec
Next hello sent in 0.868 secs
Preemption enabled
Active router is local
Standby router is 10.10.10.2, priority 110 (expires in 8 sec)
Priority 110 (configured 110)
Group name is hsrp-Vl1-10 (default)
Vlan20 - Group 20 (version 2)
State is Standby
7 state changes, last state change 00:00:38
Virtual IP address is 20.20.20.254
Active virtual MAC address is 0000.0C9F.F014
Local virtual MAC address is 0000.0C9F.F014 (v2 default)
Hello time 3 sec, hold time 10 sec
Next hello sent in 1.337 secs
Preemption disabled
Active router is 20.20.20.2, priority 100 (expires in 7 sec)
MAC address is 0000.0C9F.F014
Standby router is local
Priority 100 (default 100)
Group name is hsrp-Vl2-20 (default)
Next is results of show standby on DSW_4
DSW4#show standby
Vlan10 - Group 10 (version 2)
State is Standby
7 state changes, last state change 00:00:36
Virtual IP address is 10.10.10.254
Active virtual MAC address is 0000.0C9F.F00A
Local virtual MAC address is 0000.0C9F.F00A (v2 default)
Hello time 3 sec, hold time 10 sec
Next hello sent in 0.316 secs
Preemption disabled
Active router is 10.10.10.1
Standby router is local
Priority 100 (default 100)
Group name is hsrp-Vl1-10 (default)
Vlan20 - Group 20 (version 2)
State is Active
6 state changes, last state change 00:00:21
Virtual IP address is 20.20.20.254
Active virtual MAC address is 0000.0C9F.F014
Local virtual MAC address is 0000.0C9F.F014 (v2 default)
Hello time 3 sec, hold time 10 sec
Next hello sent in 1.339 secs
Preemption enabled
Active router is local
Standby router is 20.20.20.1, priority 110 (expires in 6 sec)
Priority 110 (configured 110)
Group name is hsrp-Vl2-20 (default)
Using this approach we can load balance traffic, host from
VLAN 10 will use DSW_3 while VLAN 20 hosts will goes thru DSW_4, notice that you
will have to configure spanning tree root primary or secondary for vlans on
DSW.
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