C
OMMAND
L
INE
I
NTERFACE
4-130
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 4-125).
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Страница 21: ...CONTENTS xvii Glossary Index ...
Страница 22: ...CONTENTS xviii ...
Страница 26: ...TABLES xxii ...
Страница 40: ...INTRODUCTION 1 10 ...
Страница 54: ...INITIAL CONFIGURATION 2 14 ...
Страница 193: ...PORT CONFIGURATION 3 139 Figure 3 61 Displaying Etherlike and RMON Statistics ...
Страница 257: ...QUALITY OF SERVICE 3 203 Figure 3 90 Configuring Policy Maps ...
Страница 313: ...COMMAND GROUPS 4 13 PE Privileged Exec VC VLAN Database Configuration ...
Страница 592: ...TROUBLESHOOTING B 4 ...
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