Specifications

Configuring Routing Between VLANs
How to Configure Routing Between VLANS
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4. encapsulation isl vlan-identifier
5. ip address ip-address mask [secondary]
6. standby [group-number] ip [ip-address [secondary]]
7. standby [group-number] timers hellotime holdtime
8. standby [group-number] priority priority
9. standby [group-number] preempt
10. standby [group-number] track type-number [interface-priority]
11. standby [group-number] authentication string
DETAILED STEPS
Command or Action Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
Router(config)# interface type
slot/port.subinterface-number
Example:
Router(config)# interface FastEthernet 1/1.110
Specifies the subinterface on which ISL will be used.
Step 4
encapsulation isl vlan-identifier
Example:
Router(config-if)# encapsulation isl 110
Defines the encapsulation format, and specifies the VLAN
identifier.
Step 5
ip address ip-address mask [secondary]
Example:
Router(config-if)# ip address 10.1.1.2
255.255.255.0
Specifies the IP address for the subnet on which ISL will be
used.
Step 6
Router(config-if)# standby [group-number] ip
[ip-address [secondary]]
Example:
Router(config-if)# standby 1 ip 10.1.1.101
Enables HSRP.
Step 7
Router(config-if)# standby [group-number]
timers hellotime holdtime
Example:
Router(config-if)# standby 1 timers 10 10
Configures the time between hello packets and the hold time
before other routers declare the active router to be down.