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◆
The snmp-server host command is used in conjunction with the
enable traps
command. Use the
the sending of traps or informs and to specify which SNMP notifications are
sent globally. For a host to receive notifications, at least one
enable traps
command and the snmp-server host command for that host
must be enabled.
◆
Some notification types cannot be controlled with the
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
2.
Create a view with the required notification messages
3.
Create a group that includes the required notify view
4.
Allow the switch to send SNMP traps; i.e., notifications
5.
Specify the target host that will receive inform messages with the snmp-
server host command as described in this section.
To send an inform to a SNMPv3 host, complete these steps:
1.
Enable the SNMP agent
2.
Create a remote SNMPv3 user to use in the message exchange process
(page
189).
3.
Create a view with the required notification messages
4.
Create a group that includes the required notify view
5.
Allow the switch to send SNMP traps; i.e., notifications
6.
Specify the target host that will receive inform messages with the snmp-
server host command as described in this section.
◆
The switch can send SNMP Version 1, 2c or 3 notifications to a host IP address,
depending on the SNMP version that the management station supports. If the
snmp-server host command does not specify the SNMP version, the default is
to send SNMP version 1 notifications.
◆
If you specify an SNMP Version 3 host, then the community string is interpreted
as an SNMP user name. The user name must first be defined with the
server user
command. Otherwise, an SNMPv3 group will be automatically
created by the snmp-server host command using the name of the specified
community string, and default settings for the read, write, and notify view.
snmp-server enable traps
(page
179).
(page
179).
– 185 –
Chapter 5
| SNMP Commands
SNMP Target Host Commands
snmp-server
command to enable
snmp-server
snmp-server
(page
191).
(page
188).
(page
182).
(page
191).
(page
188).
(page
182).
snmp-
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