snmp-server enable traps holddown-time

When a device starts up, the software waits for Layer 2 convergence (STP) and Layer 3 convergence (OSPF) before beginning to send SNMP traps to external SNMP servers. Until convergence occurs, the device may not be able to reach the servers, in which case the messages are lost.

By default, a device uses a one-minute hold-down time to wait for the convergence to occur before starting to send SNMP traps. After the hold-down time expires, the device sends the traps, including traps such as "cold start" or "warm start" that occur before the hold-down time expires.

When you have a stack of eight or more units, you must increase the trap hold-down time from the default (60 seconds) to five minutes (300 seconds). This will prevent the loss of initial boot traps.

The no form of the command changes the hold-down time to the default value.