Cisco 3825 User Manual
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Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide
OL-15667-03
Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line
Configuration Sequence
For example, the following command specifies the loopback interface for shorthaul:
Router(config-r-y)# standby use-interface Loopback103 shorthaul
Step 9
Exit the y-cable configuration mode.
Router(config-r-y)# exit
Step 10
Exit the redundancy configuration mode.
Router(config-r)# exit
Step 11
Specify the Gigabit Ethernet interface to be configured (see
“Configuring Gigabit Ethernet Interfaces”
for more details).
Router(config)# interface gigabitethernet
slot/port
The slot represents the main fixed slot and is always 0 and the port is the number of the port (0 or 1).
For example, the following command specifies the Gigabit Ethernet interface in slot 0 on port l:
Router(config)# interface gigabitethernet 0/1
Router(config-if)#
Step 12
Enable HSRP, and assign an IP address to the virtual router. This address is the same for both the active
and standby routers.
Note
In redundant configurations, the Cisco 3825 router uses HSRP to control the active and standby routers.
To use HSRP, you must configure the standby priority attributes and the IP address of the virtual router.
Priority is determined first by the configured priority value, and the IP address. In each case, a higher
value has greater priority.
Router(config-if)# standby [
group-number] ip-address [secondary]
Where:
•
group-number—(Optional) Group number on the interface to which the timers apply. The default
is 0.
•
ip-address—(Optional) IP address of the Hot Standby router interface.
•
secondary—(Optional) Indicates the IP address is a secondary Hot Standby router interface. Useful
on interfaces with primary and secondary addresses; you can configure primary and secondary
HSRP addresses.
For example, the following command specifies the hot standby group 1 with the IP address as 55.0.0.10:
Router(config-if)# standby 1 ip 55.0.0.10
Step 13
To configure the time between “hello packets” and the time before other routers declare the active Hot
Standby or standby router to be down, use the standby timers command in interface configuration mode.
To restore the timers to their default values, use the no form of this command. Indicate the hot standby
group and timers to be configured.
Router(config-if)# standby [group-number] timers
[msec] hellotime [msec] holdtime
Where:
•
group-number—(Optional) Group number on the interface to which the timers apply. The default is
0.
•
msec—(Optional) Interval in milliseconds. Millisecond timers allow for faster failover.