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User Guide for Cisco Security Manager 4.4
OL-28826-01
Chapter 64 Configuring Routing Policies
OSPF Process Policy Page
OSPF Max Prefix Mapping Dialog Box
Use the OSPF Max Prefix Mapping dialog box to add or edit the maximum number of routes that can be
redistributed into an OSPF process.
Navigation Path
Go to the OSPF Process Page—Redistribution Tab, page 64-38, then click the Add or Edit button
beneath the Prefix Mapping table.
Related Topics
• OSPF Redistribution Mapping Dialog Box, page 64-39
• Redistributing Routes into OSPF, page 64-22
Field Reference
Limit to Subnets When selected, only subnetted routes are redistributed.
When deselected, subnetted routes are not redistributed.
Table 64-18 OSPF Redistribution Mapping Dialog Box (Continued)
Element Description
Table 64-19 OSPF Max Prefix Mapping Dialog Box
Element Description
Process ID The OSPF process into which other routes are being redistributed. The
list contains the OSPF processes defined in the OSPF Process
Page—Setup Tab, page 64-35.
Max Prefix The maximum number of prefixes (routes) that can be redistributed into
the selected OSPF process. Limiting the number of redistributed routes
helps prevent the router from being flooded by an excessive number of
routes.
Threshold The percentage of the maximum prefix value that acts as a threshold for
triggering warning messages. The default is 75%.
Note This warning is triggered whether or not the Warning-Only
check box is selected.
When maximum routes
reached
The action to take when the maximum number of redistributed routes is
reached:
• Enforce Maximum Route—Prevents additional routes from being
redistributed when the defined maximum prefix value is reached.
This is the default.
• Warning Only—Issues a warning when the maximum number of
routes is reached, but does not prevent additional routes from being
redistributed.