C
HAPTER
14
| Basic Administration Protocols
Simple Network Management Protocol
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COMMAND USAGE
â—† 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 399).
2. Create a view with the required notification messages (page 402).
3. Configure the group (matching the community string specified on
the Configure Trap - Add page) to include the required notify view
(page 405).
4. Enable informs as described in the following pages.
To send an inform to a SNMPv3 host, complete these steps:
1. Enable the SNMP agent (page 399).
2. Create a local SNMPv3 user to use in the message exchange
process (page 411). If the user specified in the notification
configuration page does not exist, an SNMPv3 group will be
automatically created using the name of the specified local user,
and default settings for the read, write, and notify view.
3. Create a view with the required notification messages (page 402).
4. Create a group that includes the required notify view (page 405).
5. Enable informs as described in the following pages.
PARAMETERS
These parameters are displayed:
SNMP Version 1
◆ IP Address – IP address of a new management station to receive
notification message (i.e., the targeted recipient).
◆ Version – Specifies whether to send notifications using SNMP v1, v2c,
or v3. (Default: v1)
◆ Community String – Specifies a valid community string for the new
notification manager entry. (Range: 1-32 characters, case sensitive)
Although you can set this string in the Configure Notification – Add
page, we recommend defining it in the Configure User – Add
Community page.
◆ UDP Port – Specifies the UDP port number used by the notification
manager. (Default: 162)
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