Quick Reference Guide

PowerConnect B-Series TI24X Configuration Guide 13
53-1002269-02
Configuring basic system parameters
2
When you add a trap receiver, the software automatically encrypts the community string you
associate with the receiver when the string is displayed by the CLI. If you want the software to show
the community string in the clear, you must explicitly specify this when you add a trap receiver. In
either case, the software does not encrypt the string in the SNMP traps sent to the receiver.
To specify the host to which the device sends all SNMP traps, use one of the following methods.
To add a trap receiver and encrypt the display of the community string, enter commands such as
the following.
To specify an SNMP trap receiver and change the UDP port that will be used to receive traps, enter
a command such as the following.
PowerConnect(config)# snmp-server host 2.2.2.2 0 mypublic port 200
PowerConnect(config)# write memory
Syntax: snmp-server host ip-addr [0 | 1] string [port value]
The ip-addr parameter specifies the IP address of the trap receiver.
The 0 | 1 parameter specifies whether you want the software to encrypt the string (1) or show the
string in the clear (0). The default is 0.
The string parameter specifies an SNMP community string configured on the device. The string
can be a read-only string or a read-write string. The string is not used to authenticate access to the
trap host but is instead a useful method for filtering traps on the host. For example, if you configure
each of your devices that use the trap host to send a different community string, you can easily
distinguish among the traps from different devices based on the community strings.
The command in the example above adds trap receiver 2.2.2.2 and configures the software to
encrypt display of the community string. When you save the new community string to the
startup-config file (using the write memory command), the software adds the following command
to the file.
snmp-server host 2.2.2.2 1 <encrypted-string>
To add a trap receiver and configure the software to encrypt display of the community string in the
CLI, enter commands such as the following.
device(config)# snmp-server host 2.2.2.2 0 device-12
device(config)# write memory
The port value parameter allows you to specify which UDP port will be used by the trap receiver.
This parameter allows you to configure several trap receivers in a system. With this parameter,
device and another network management application can coexist in the same system. devices can
be configured to send copies of traps to more than one network management application.
Specifying a single trap source
You can specify a single trap source to ensure that all SNMP traps sent by the device use the same
source IP address. When you configure the SNMP source address, you specify the Ethernet port,
loopback interface, or virtual interface that is the source for the traps. The device then uses the
lowest-numbered IP address configured on the port or interface as the source IP address in the
SNMP traps sent by the device.
Identifying a single source IP address for SNMP traps provides the following benefits:
• If your trap receiver is configured to accept traps only from specific links or IP addresses, you
can use this feature to simplify configuration of the trap receiver by configuring the device to
always send the traps from the same link or source address.