Cisco Systems OL-16647-01 manual Filtering

11-8
Cisco ASDM User Guide
OL-16647-01
Chapter 11 Configuring Dynamic And Static Routing
Dynamic Routing
Add/Edit Route Summarization
Use the Add Route Summarization dialog box to add a new entry to the Route Summarization table. Use
the Edit Route Summarization dialog box to change an existing entry.
Fields
• OSPF Process—Choose the OSPF process the route summary applies to. You cannot change this
value when editing an existing route summary entry.
• Area ID—Choose the area ID the route summary applies to. You cannot change this value when
editing an existing route summary entry.
• IP Address—Enter the network address for the routes being summarized.
• Network Mask—Choose one of the common network masks from the list or type the mask in the
field.
• Advertise—Check this check box to set the address range status to “advertise”. This causes type 3
summary LSAs to be generated. Uncheck this check box to suppress the type 3 summary LSA for
the specified networks. This check box is checked by default.
Modes
The following table shows the modes in which this feature is available:
Filtering
The Filtering pane displays the ABR type 3 LSA filters that have been configured for each OSPF process.
ABR type 3 LSA filters allow only specified prefixes to be sent from one area to another area and
restricts all other prefixes. This type of area filtering can be applied out of a specific OSPF area, into a
specific OSPF area, or into and out of the same OSPF areas at the same time.
Benefits
OSPF ABR type 3 LSA filtering improves your control of route distribution between OSPF areas.
Restrictions
Only type 3 LSAs that originate from an ABR are filtered.
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
• — • ——
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
• — • ——