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User Guide for Cisco Security Manager 4.4
OL-28826-01
Chapter 54 Configuring Routing Policies on Firewall Devices
Configuring OSPF
Add/Edit OSPF Virtual Link MD5 Configuration Dialog Box
Use the Add/Edit OSPF Virtual Link MD5 Configuration dialog box to define MD5 keys for
authentication of virtual links.
Navigation Path
You can access the Add/Edit OSPF Virtual Link MD5 Configuration dialog box from the Add/Edit OSPF
Virtual Link Configuration Dialog Box, page 54-13.
Related Topics
• Add/Edit OSPF Virtual Link Configuration Dialog Box, page 54-13
• Virtual Link Tab, page 54-13
• Configuring OSPF, page 54-2
Field Reference
Filtering Tab
Use the Filtering tab to configure the ABR Type 3 LSA filters 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.
MD5 IDs and Keys Contains the settings for entering the MD5 keys and parameters when
MD5 authentication is enabled. All devices on the interface using OSPF
authentication must use the same MD5 key and ID.
• MD5 Key ID and MD5 Key Table
–
MD5 Key ID—A numerical key identifier. Valid values range
from 1 to 255.
–
MD5 Key—An alphanumeric character string of up to 16
bytes.
Table 54-12 Add/Edit OSPF Virtual Link Configuration Dialog Box (Continued)
Element Description
Table 54-13 Add/Edit OSPF Virtual Link MD5 Configuration Dialog Box
Element Description
MD5 Key ID A numerical key identifier. Valid values range from 1 to 255.
MD5 Key An alphanumeric character string of up to 16 bytes.
Confirm Re-enter the MD5 key.