User manual

C HAPTER 15 | Basic Administration Protocols
Simple Network Management Protocol
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ES-2000 Series
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 230).
2. Create a view with the required notification messages (page 233).
3. Configure the group (matching the community string specified on
the Configure Trap - Add page) to include the required notify view
(page 236).
4. Enable trap informs as described in the following pages.
To send an inform to a SNMPv3 host, complete these steps:
1. Enable the SNMP agent (page 230).
2. Create a local SNMPv3 user to use in the message exchange
process (page 241). If the user specified in the trap 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 233).
4. Create a group that includes the required notify view (page 236).
5. Enable trap 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 as SNMP v1, v2c, or
v3 traps. (Default: v1)
◆ Community String – Specifies a valid community string for the new
trap manager entry. (Range: 1-32 characters, case sensitive)
Although you can set this string in the Configure Trap – Add page, we
recommend defining it in the Configure User – Add Community page.
◆ UDP Port – Specifies the UDP port number used by the trap manager.
(Default: 162)
SNMP Version 2c
◆ IP Address – IP address of a new management station to receive
notification message (i.e., the targeted recipient).