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Cisco ONS 15530 Configuration Guide and Command Reference
78-14227-01, Cisco IOS Release 12.1(10)E2
AppendixA Command Reference
OSCP Commands
oscp timer hello holddown
To modify the OSCP timer Hello hold-down interval, u se the oscp timer hello holddown command. To
return the Hello hold-down interval to its default value, use the no form of the command.
oscp timer hello holddown milliseconds
no oscp timer hello holddown
Syntax Description
Defaults 3000 milliseconds
Command Modes Global configuration
Command History
Usage Guidelines Use this command to control the amount of OSCP Hello activity that is generated on the network. The
Hello hold-down timer specifies the interval during which no more than one Hello packet can be sent. If
more than one Hello packet is generated during the hold-down period, the extra packets are delayed.
Increasing the hold-down timer limits the number of Hello packets triggered in response to Hello packets
received from a neighboring node and reduces the likelihood of Hello packets flooding the OSC.
To ensure proper functioning of the OSCP, the Hello hold-down timer value can be no more that
75 percent of the OSCP Hello interface timer.
Note There is a trade-off between the frequency of generati ng He llo pac kets a nd the sp ee d i n wh ic h t he
system detects that the OSCP has gone down. In certain OSCP failure scenarios, a shorter Hello
interval leads to faster detection of the OSCP failure.
Examples The following example shows how to configure the OSCP timer Hello hold-down interval.
Switch# configure terminal
Switch(config)# oscp timer hello holddown 300
milliseconds Specifies, in milliseconds, the interval in which no more than one Hello
packet can be generated. If more than one Hello packet i s generated during
the hold-down period, the extra packets are delayed. The range is
150 to 30000 milliseconds.
Release Modification
12.1(10)EV2 This command was introduced.