Configuring Rip Route Filters - Foundry Networks Switch and Router Installation And Configuration Manual

USING THE CLI
To enable poison reverse on an interface, enter commands such as the following:
BigIron(config)# interface ethernet 1/1
BigIron(config-if-1/1)# ip rip poison-reverse
Syntax: [no] ip rip poison-reverse
USING THE WEB MANAGEMENT INTERFACE
To enable RIP routing on individual interfaces:
1. Log on to the device using a valid user name and password for read-write access. The System configuration
panel is displayed.
2. Click on the plus sign next to Configure in the tree view to expand the list of configuration options.
3. Click on the plus sign next to RIP in the tree view to expand the list of RIP option links.
4. Click on the Interface link to display the RIP interface table.
5. Click on the Modify button in the row for the port.
6. Select poison reverse.
7. Click the Apply button to save the change to the device's running-config file.
NOTE: To apply the changes to all RIP interfaces, select the Apply To All Ports button instead of the Apply
button.
8. To configure settings for another port, select the port (and slot, if applicable) and go to step 6.
9. Select the Save link at the bottom of the dialog. Select Yes when prompted to save the configuration change
to the startup-config file on the device's flash memory.
Suppressing RIP Route Advertisement on a VRRP or VRRPE Backup Interface
NOTE: This section applies only if you configure the Layer 3 Switch for Virtual Router Redundancy Protocol
(VRRP) or VRRP Extended (VRRPE). See "Configuring VRRP and VRRPE" on page 21-1.
Normally, a VRRP or VRRPE Backup includes route information for the virtual IP address (the backed up
interface) in RIP advertisements. As a result, other routers receive multiple paths for the backed up interface and
might sometimes unsuccessfully use the path to the Backup rather than the path to the Master.
You can prevent the Backups from advertising route information for the backed up interface by enabling
suppression of the advertisements.
USING THE CLI
To suppress RIP advertisements for the backed up interface in Router2, enter the following commands:
Router2(config)# router rip
Router2(config-rip-router)# use-vrrp-path
Syntax: [no] use-vrrp-path
The syntax is the same for VRRP and VRRPE.
USING THE WEB MANAGEMENT INTERFACE
See "Configuration Examples" on page 21-31.

Configuring RIP Route Filters

You can configure RIP route filters to permit or deny learning or advertising of specific routes. Configure the filters
globally, then apply them to individual interfaces. When apply a RIP route filter to an interface, you specify
whether the filter applies to learned routes (in) or advertised routes (out).
December 2000
Configuring RIP
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