Cisco ASA 5505 Configuration Manual page 417

Chapter 22 Configuring RIP
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In the Metrics area, check the Configure Metric Type check box to specify a metric for the redistributed
Step 4
routes. If not specified, the routes are assigned a default metric of 0. When the check box is checked, the
available values include the following:
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In the Optional area, choose the route map from the Route Map drop-down list. This route map specifies
Step 5
the name of a route map that must be specified before the route can be redistributed into the RIP routing
process. Click Manage to configure a specific route map. For more information about configuring route
maps, see the
Step 6 In the Match area, choose specific types of OSPF routes to redistribute by checking the check box next
to the route type. This area is not active unless OSPF has been chosen in the Protocol area.
If you do not check any route types, Internal, External 1, and External 2 routes are redistributed by
default. The Match types are:
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Step 7 Click OK.
Enabling RIP Authentication
The adaptive security appliance supports RIP message authentication for RIP Version 2 messages.
Note
RIP route authentication provides MD5 authentication of routing updates from the RIP routing protocol.
The MD5 keyed digest in each RIP packet prevents the introduction of unauthorized or false routing
messages from unapproved sources.
RIP route authentication is configured on a per-interface basis. All RIP neighbors on interfaces
configured for RIP message authentication must be configured with the same authentication mode and
key for adjacencies to be established.
Before you can enable RIP route authentication, you must enable RIP.
Note
To enable RIP authentication on an interface, perform the following steps:
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OSPF and OSPF ID—Routes discovered by the OSPF routing process. If you choose OSPF, you
must also enter the OSPF process ID. Additionally, you can select the specific types of OSPF routes
to redistribute from the Match area.
EIGRP and EIGRP ID—Routes discovered by the EIGRP routing process. If you choose EIGRP,
you must also specify the autonomous system number of the EIGRP routing process in the EIGRP
ID field.
Transparent—Choose this option to cause the current route metric to be used.
Value—Choose this option to assign a specific metric value. You can enter a value from 0 to 16.
"Add/Edit a Route Map" section on page
Internal—Routes internal to the AS are redistributed.
External 1—Type 1 routes external to the AS are redistributed.
External 2—Type 2 routes external to the AS are redistributed.
NSSA External 1—Type 1 routes external to an NSSA are redistributed.
NSSA External 2—Type 2 routes external to an NSSA are redistributed.
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Cisco ASA 5500 Series Configuration Guide using ASDM
Customizing RIP
22-11