SNMP Commands 4

to using the snmp-server host command. (Maximum length:

32characters)

•version - Specifies whether to send notifications as SNMP Version 1, 2c or

3traps. (Range: 1, 2c, 3; Default: 1)

-auth noauth priv - This group uses SNMPv3 with authentication, no authentication, or with authentication and privacy. See “Simple Network Management Protocol” on page 3-34for further information about these authentication and encryption options.

•port - Host UDP port to use. (Range: 1-65535; Default: 162)

Default Setting

•Host Address: None

•Notification Type: Traps

•SNMP Version: 1

•UDP Port: 162

Command Mode

Global Configuration

Command Usage

•If you do not enter an snmp-server host command, no notifications are sent. In order to configure the switch to send SNMP notifications, you must enter at least one snmp-server host command. In order to enable multiple hosts, you must issue a separate snmp-server host command for each host.

•The snmp-server host command is used in conjunction with the snmp-server enable traps command. Use the snmp-server enable traps command to enable the sending of traps or informs and to specify which SNMP notifications are sent globally. For a host to receive notifications, at least one snmp-server enable traps command and the snmp-server host command for that host must be enabled.

•Some notification types cannot be controlled with the snmp-server enable traps command. For example, some notification types are always enabled.

•Notifications are issued by the switch as trap messages by default. The recipient of a trap message does not send a response to the switch. Traps are therefore not as reliable as inform messages, which include a request for acknowledgement of receipt. Informs can be used to ensure that critical information is received by the host. However, note that informs consume more system resources because they must be kept in memory until a response is received. Informs also add to network traffic. You should consider these effects when deciding whether to issue notifications as traps or informs.

To send an inform to a SNMPv2c host, complete these steps:

1.Enable the SNMP agent (page 4-111).

2.Allow the switch to send SNMP traps; i.e., notifications (page 4-116).

3.Specify the target host that will receive inform messages with the snmp-server host command as described in this section.

4.Create a view with the required notification messages (page 4-119).

5.Create a group that includes the required notify view (page 4-120).

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