Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) - Manual (Page 683)

Multi-Service IronWare Routing Configuration Guide 655
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Configuring OSPFv3
The pacing interval, which is the interval at which the device refreshes an accumulated group of
LSAs, is configurable to a range from 10 – 1800 seconds (30 minutes). The default is 240 seconds
(four minutes). Thus, every four minutes, the device refreshes the group of accumulated LSAs and
sends the group together in the same packets.
The pacing interval is inversely proportional to the number of LSAs the device is refreshing and
aging. For example, if you have approximately 10,000 LSAs, decreasing the pacing interval
enhances performance. If you have a very small database (40 – 100 LSAs), increasing the pacing
interval to 10 – 20 minutes might enhance performance only slightly.
To change the OSPFv3 LSA pacing interval to two minutes (120 seconds), enter the following
command.
Brocade(config)# ipv6 router ospf
Brocade(config-ospf6-router)# timers lsa-group-pacing 120
Syntax: [no] timers lsa-group-pacing seconds
The seconds parameter specifies the number of seconds and can be from 10 – 1800 (30 minutes).
The default is 240 seconds (four minutes).
To restore the pacing interval to its default value, use the no form of the command.
Modifying exit overflow interval
If a database overflow condition occurs on the device, the device eliminates the condition by
removing entries that originated on the device. The exit overflow interval allows you to set how
often a device checks to see if the overflow condition has been eliminated. The default value is 0. If
the configured value of the database overflow interval is 0, then the device never leaves the
database overflow condition.
For example, to modify the exit overflow interval to 60 seconds, enter the following command.
Brocade(config-ospf6-router)# database-overflow-interval 60
Syntax: database-overflow-interval seconds
The seconds parameter can be a value from 0 – 86400 seconds (24 hours).
To reset the exit overflow interval to its system default, enter the no form of this command.
Modifying external link state database limit
By default, the link state database can hold a maximum of 2000 entries for external (type 5) LSAs.
You can change the maximum number of entries from 500 – 8000. After changing this limit, make
sure to save the running-config file and reload the software. The change does not take effect until
you reload or reboot the software.
For example, to change the maximum number entries from the default of 2000 to 3000, enter the
following command.
Brocade(config-ospf6-router)# external-lsdb-limit 3000
Syntax: external-lsdb-limit entries
The entries parameter can be a numerical value from 500 – 8000 seconds.