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Cisco ONS 15530 Configuration Guide and Command Reference
78-14227-01, Cisco IOS Release 12.1(10)EV2
Chapter9 Monitoring Your Netw ork Topology
Configuring OSCP
Configuring OSCP
The configurable parameters of the OSCP are described i n th e foll owing se cti on s.
Note The default values are suitable in most cases.

Configuring the Hello Interval Timer

The OSCP sends Hello packets to adjacent nodes at a configured interval. When five packets fail to get
a response from the receiving node, that node is declared “down.” By decreasing the interval at whic h
Hello packets are sent, reaction time to a failed node can be lesse ned. In creasin g the int erv a l red uces the
amount of Hello packet traffic.
To configure the OSCP Hello timer interval, use the following global configuration command:
Example
The following example shows how to set the Hello interval to 500 milliseconds:
Switch(config)# oscp timer hello interval 500

Configuring the Hello Hold-Down Timer

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 H el lo p ackets t r igge red in r esp onse t o
Hello packets received from a neighboring node and reduces the likelihood of Hello packets flooding
the OSC.
To configure the OSCP Hello hold-down timer, use the following global configuration command:
Example
The following example shows how to set the Hello hold-down timer to 2000 milliseconds:
Switch(config)# oscp timer hello holddown 2000
Command Purpose
oscp timer hello interval milliseconds Configures the Hello inte rval timer in milli seconds. The
default value is 100 milliseconds.
Command Purpose
oscp timer hello holddown milliseconds Configures the Hello hold-down timer in milliseconds.
The default value is 3000 milliseconds.