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Cisco ASA 5500 Series Configuration Guide using ASDM
OL-20339-01
Chapter 22 Configuring RIP
Customizing RIP
Filtering Networks in RIP
To filter the networks received in updates, perform the following steps:
Note Before you begin, you must create a standard access list that permits the networks that you want the RIP
process to allow in the routing table and denies the networks that you want the RIP process to discard.
In ASDM, you can configure filter rules that allow you to filter the network received in RIP routing
updates or sent in RIP routing updates. Each filter rule consists of one or more network rules.
Step 1 In the main ASDM window, choose Configuration > Device Setup > Routing > RIP > Setup.
Step 2 Check the Enable RIP routing check box, and click Apply.
Step 3 Choose Configuration > Device Setup > Routing > RIP > Filter Rules.
Step 4 Click Add or Edit.
The Add or Edit Filter Rule dialog box appears. This dialog box allows you to create or edit filter rules
that apply to all interfaces or to a specific interface.
Step 5 From the Direction drop-down list, choose the direction in which the filter should act.
Choosing “In” filters networks on incoming RIP updates. Additionally, if you choose “In,” only the
Interface drop-down list is visible.
If you choose “Out” as the filter direction, skip to Step 8.
Step 6 Choose the Interface type from the Interface drop-down list.
This allows you to choose a specific interface for the filter rule, or you can choose the All Interfaces
option to apply the filter to all interfaces.
Step 7 (Optional) Add a network rule by clicking Add. Skip to the “Adding or Editing a Filter Rule” section on
page 22-10.
Step 8 Choose “Out” to filter networks from outgoing RIP updates.
When you choose “Out” as the filter direction, the Interface and Routing Process drop-down list becomes
visible.
• Click the Interface radio button to choose a specific interface for the filter rule from the Interface
drop-down list, or you can click the All Interfaces option to apply the filter to all interfaces.
• Click the Routing Process radio button to activate the Routing process drop-down list. Choose from
the following routing process types:
–
connected
–
static
–
OSPF
–
RIP
–
EIGRP
Step 9 (Optional) Add a network rule by clicking Add. Skip to the “Adding or Editing a Filter Rule” section on
page 22-10.
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