Foundry Networks Switch and Router Installation And Configuration Manual page 871

Router1(config-if-17)# int e 20
Router1(config-if-20)# ip fsrp address 192.55.4.2 preference 200
Modify Port Parameters (optional)
The user can also modify two port parameters for FSRP: the keep-alive-time and the router-dead-interval.
Keep Alive Time
The keep-alive-time parameter allows you to modify how often the FSRP hello message is sent on the interface
on which the keep-alive-time is configured.
EXAMPLE:
To modify the keep-alive-time parameter for interfaces A and C on Router 1 to 15 seconds from the default of 3
seconds, enter the following:
Router1(config)# int e 17
Router1(config-if-17)# ip fsrp 192.53.5.2 keep-alive-time 15
Router1(config-if-17)# int e 20
Router1(config-if-20)# ip fsrp 192.55.4.2 keep-alive-time 15
NOTE: The keep-alive-time value must be set to the same value on both the active and standby routers when
both routers are connected to the same sub-net.
Router Dead Time
The router-dead-time parameter allows you to define the period of time (hold time) that the standby router waits
before determining that the active router is unavailable (dead). If the configured period of time expires, the
standby router becomes active.
NOTE: The router-dead-time parameter must be set to the same value on both the active and standby router
when both routers are connected to the same sub-net.
EXAMPLE:
To modify the router-dead-time parameter for interfaces A and C on Router 1 to 30 seconds from the default of 9
seconds, you would enter the following:
Router1(config)# int e 17
Router1(config-if-17)# ip fsrp 192.53.5.2 router-dead-interval 30
Router1(config-if-17)# int e 20
Router1(config-if-20)# ip fsrp 192.55.4.2 router-dead-interval 30
USING THE WEB MANAGEMENT INTERFACE
EXAMPLE:
To define and assign the virtual router IP addresses for Router 1, shown in Figure 22.5, you would need to define
two separate virtual IP addresses for interfaces A and C as well as linking those address to the IP addresses of
the physical interfaces for A and C.
For purposes of this example we are assuming that interface A corresponds to physical interface 17 and interface
C corresponds to physical interface 20.
To enable FSRP on an interface:
1. Log on to the device using a valid user name and password for read-write access. The System configuration
dialog is displayed.
2. Click on the plus sign next to Configure in the tree view to expand the list of configuration options.
December 2000
Configuring FSRP
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