Brocade FastIron Ethernet Switch Administration Guide - Manual (Page 33)

Specifying a single trap source
You can specify a single trap source to ensure that all SNMP traps sent by the Layer 3 switch use the
same source IP address. For configuration details, refer to "Specifying a single source interface for
specified packet types" section in the FastIron Ethernet Switch Layer 3 Routing Configuration Guide.
Setting the SNMP trap holddown time
When a Brocade 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 might not be able to reach the servers, in which case the messages are
lost.
By default, a Brocade device uses a one-minute holddown time to wait for the convergence to occur
before starting to send SNMP traps. After the holddown time expires, the device sends the traps,
including traps such as "cold start" or "warm start" that occur before the holddown time expires.
You can change the holddown time to a value from one second to ten minutes.
To change the holddown time for SNMP traps, enter a command such as the following at the global
CONFIG level of the CLI.
device(config)# snmp-server enable traps holddown-time 30
The command in this example changes the holddown time for SNMP traps to 30 seconds. The device
waits 30 seconds to allow convergence in STP and OSPF before sending traps to the SNMP trap
receiver.
Syntax: [no] snmp-server enable traps holddown-time seconds
The secs parameter specifies the number of seconds and can be from 1 - 600 (ten minutes). The
default is 60 seconds.
Disabling SNMP traps
Brocade devices come with SNMP trap generation enabled by default for all traps. You can selectively
disable one or more of the following traps.
NOTE
By default, all SNMP traps are enabled at system startup.
SNMP Layer 2 traps
The following traps are generated on devices running Layer 2 software:
• SNMP authentication keys
• Power supply failure
• Fan failure
• Cold start
• Link up
• Link down
• Bridge new root
• Bridge topology change
• Locked address violation
Specifying a single trap source
FastIron Ethernet Switch Administration Guide 33
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