Brocade Virtual ADX Switch and Router Guide (Supporting ADX v03.1.00) - Manual (Page 148)

134 Brocade Virtual ADX Switch and Router Guide
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Configuring OSPF
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The external | inter-area | intra-area parameter specifies the route type for which you are changing
the default administrative distance.
The distance parameter specifies the new distance for the specified route type. Unless you change
the distance for one of the route types using commands such as those shown above, the default is
110.
To reset the administrative distance to its system default (110), enter a command such as the
following.
Virtual ADX(config-ospf-router)# no distance external 100
Configure OSPF group Link State Advertisement (LSA)
pacing
The Layer 3 Switch paces LSA refreshes by delaying the refreshes for a specified time interval
instead of performing a refresh each time an individual LSA’s refresh timer expires. The
accumulated LSAs constitute a group, which the Layer 3 Switch refreshes and sends out together
in one or more packets.
The pacing interval, which is the interval at which the Layer 3 Switch 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 Layer 3 Switch refreshes the group of
accumulated LSAs and sends the group together in the same packet(s).
Usage guidelines
The pacing interval is inversely proportional to the number of LSAs the Layer 3 Switch 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 slightly.
Changing the LSA pacing interval
To change the LSA pacing interval to two minutes (120 seconds), enter the following command.
Virtual ADX(config-ospf-router)# timers lsa-group-pacing 120
Syntax: [no] timers lsa-group-pacing secs
The secs 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, enter the following command.
Virtual ADX(config-ospf-router)# no timers lsa-group-pacing
Modify OSPF traps generated
OSPF traps as defined by RFC 1850 are supported on Brocade routers. OSPF trap generation is
enabled on the router, by default.
When using the CLI, you can disable all or specific OSPF trap generation by entering the following
CLI command.
Virtual ADX(config-ospf-router)# no snmp-server trap ospf