Configuring Ospf Area Parameters - Foundry Networks NetIron M2404C User Manual

Foundry NetIron M2404C and M2404F Metro Access Switches
Enabling the L2-mode of SPF Calculation
The spf l2-convergence command, in Router OSPF Configuration mode, enables the L2 mode of
SPF calculation. SPF L2 mode of calculation is a standard defined SPF algorithm with improved
response. The SPF L2 mode of calculation performance is optimized for topologies with L2 control
protocol convergence (i.e. MSTP) and it is provides rapid response when there are L2 topology
changes.
Command Syntax
device-name(config-router)#spf l2-convergence
device-name(config-router)#no spf l2-convergence
Setting the NSSA Translator Stability Interval
The timers nssaTranslator command, in Router OSPF Configuration mode, sets the NSSA
Translator Stability interval (in seconds). The no form of this command resets the default value.
By default, the NSSA Translator Stability interval is 40 seconds.
Command Syntax
device-name(config-router)#timers nssaTranslator <seconds>
device-name(config-router)#no timers nssaTranslator
Argument Description
seconds

Configuring OSPF Area Parameters

The area parameters include authentication, defining stub areas, and assigning specific costs to the
default summary route. Authentication allows password-based protection against unauthorized
access to an area. Stub areas are areas to which information on external routes is not sent. Instead,
there is a default external route generated by the area border router into the stub area for
destinations outside the autonomous system.
Table 6 lists the OSPF area parameters commands.
Table 6: OSPF Area Parameters Commands
Command
area
authentication
area default-
cost
area export-list
area import-list
area nssa
Open Shortest Path First (OSPF)
NSSA Translator Stability interval in the range <1-65535> seconds.
Description
Enables authentication for the specified OSPF area.
Assigns the specified cost to the default summary route used for the stub
area.
Sets a filter by the specified routing access list for networks that are
announced to other areas.
Sets a filter by the specified routing access list for networks that are
announced from other areas to the specified area.
Sets the specified OSPF area as NSSA.
© 2008 Foundry Networks, Inc
Configuring Advanced Routing Information (Rev. 03)
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