Foundry Networks Switch and Router Installation And Configuration Manual page 611

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, use the following CLI method.
USING THE CLI
To change the LSA pacing interval to two minutes (120 seconds), enter the following command:
BigIron(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:
BigIron(config-ospf-router)# no timers lsa-group-pacing
USING THE WEB MANAGEMENT INTERFACE
You cannot configure this option using the Web management interface.
Modify OSPF Traps Generated
OSPF traps as defined by RFC 1850 are supported on Foundry routers. OSPF trap generation is enabled on the
router, by default.
USING THE CLI
When using the CLI, you can disable all or specific OSPF trap generation by entering the following CLI command:
BigIron(config-ospf-router)# no snmp-server trap ospf
To later re-enable the trap feature, enter snmp-server trap ospf.
To disable a specific OSPF trap, enter the command as no snmp-server trap ospf <ospf-trap>.
These commands are at the OSPF router Level of the CLI.
Here is a summary of OSPF traps supported on Foundry routers, their corresponding CLI commands, and their
associated MIB objects from RFC 1850:
• interface-state-change-trap
• virtual-interface-state-change-trap
• neighbor-state-change-trap
• virtual-neighbor-state-change-trap
• interface-config-error-trap
• virtual-interface-config-error-trap
• interface-authentication-failure-trap
• virtual-interface-authentication-failure-trap
• interface-receive-bad-packet-trap
December 2000
[MIB object: OspfIfstateChange]
[MIB object: OspfVirtIfStateChange
[MIB object:ospfNbrStateChange]
[MIB object: ospfVirtNbrStateChange]
[MIB object: ospfIfConfigError]
[MIB object: ospfVirtIfConfigError]
[MIB object: ospfIfAuthFailure]
[MIB object: ospfVirtIfAuthFailure]
[MIB object: ospfIfrxBadPacket]
Configuring OSPF
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