Brocade Communications Systems Layer 3 Routing Configuration ICX 6650 - Manual (Page 226)

208 Brocade ICX 6650 Layer 3 Routing Configuration Guide
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Configuring OSPF
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.
Brocade(config-ospf-router)#no distance external 100
Configuring OSPF group Link State Advertisement 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 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 through 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 packets.
Usage guidelines for configuring OSPF group LSA pacing
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 to 100 LSAs), increasing the pacing
interval to 10 to 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.
Brocade(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 through 1800 (30
minutes). The default is 240 seconds (4 minutes).
To restore the pacing interval to its default value, enter the following command.
Brocade(config-ospf-router)#no timers lsa-group-pacing
Modifying 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.
Brocade(config-ospf-router)#no snmp-server trap ospf
Syntax: [no] snmp-server trap ospf