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54-21
User Guide for Cisco Security Manager 4.4
OL-28826-01
Chapter 54 Configuring Routing Policies on Firewall Devices
Configuring OSPF
MD5 Key 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.
• Key ID—Enter a numerical key identifier. Valid values range from
1 to 255.
• Key—An alphanumeric character string of up to 16 bytes.
• Confirm—Re-enter the MD5 key.
Cost The cost of sending a packet through the interface.
Priority The OSPF priority assigned to the interface.
MTU Ignore When selected, MTU mismatch detection is disabled. Deselect this
check box to enable MTU mismatch detection.
Database Filter All Out When selected, outgoing LSAs are filtered during synchronization and
flooding. Deselect this check box to disable filtering.
Hello Interval (sec) The interval, in seconds, between hello packets sent on an interface.
The smaller the hello interval, the faster topological changes are
detected but the more traffic is sent on the interface. This value must be
the same for all routers and access servers on a specific interface. Valid
values range from 1 to 65535 seconds. The default value is 10 seconds.
Transmit Delay (sec) The estimated time, in seconds, required to send an LSA packet on the
interface. LSAs in the update packet have their ages increased by the
amount specified by this field before transmission. If the delay is not
added before transmission over a link, the time in which the LSA
propagates over the link is not considered. The value assigned should
take into account the transmission and propagation delays for the
interface. This setting has more significance on very low-speed links.
Valid values range from 1 to 65535 seconds. The default value is 1
second.
Retransmit Interval (sec) The time, in seconds, between LSA retransmissions for adjacencies
belonging to the interface. When a router sends an LSA to its neighbor,
it keeps the LSA until it receives the acknowledgment message. If the
router receives no acknowledgment, it will resend the LSA. Be
conservative when setting this value, or needless retransmission can
result. The value should be larger for serial lines and virtual links. Valid
values range from 1 to 65535 seconds. The default value is 5 seconds.
Dead Interval (sec) The interval, in seconds, in which no hello packets are received,
causing neighbors to declare a router down. Valid values range from 1
to 65535. The default value of this setting is four times the interval set
by the Hello Interval field.
Point-to-Point Displays “true” if the interface is set to non-broadcast (point-to-point).
Displays “false” if the interface is set to broadcast.
Table 54-19 Add/Edit Interface Dialog Box (Continued)
Element Description