H3C Technologies H3C S3100 Series Switches - Manual (Page 451)

Operation Manual – SNMP and RMON
H3C S3100-52P Ethernet Switch Chapter 1 SNMP Configuration
1-6
Operation Command Description
Set the device engine ID
snmp-agent
local
-engineid engineid
Optional
By default, the device
engine ID is formed by
appending device
information to the
enterprise number.
Create or update the view
information
snmp-agent mib
-view
{ included | excluded }
view
-name oid-tree
Optional
By default, the view
name is “ViewDefault”
and OID is 1.
Note:
An S3100-52P Ethernet switch acts as the following to prevent attacks through unused
sockets.
z
Opening UDP port 161 (which is used by SNMP agents) and UDP port 1024 (which
is used by SNMP-trap clients) only when SNMP is enabled.
z
Closing UDP port 161 and UDP port 1024 when SNMP is disabled.
This function is achieved in the following way.
z
Executing the snmp-agent command or any of the commands used to configure
SNMP agent causes the SNMP agent being enabled and UDP port 161 and UDP
port 1024 being opened.
z
Executing the undo snmp-agent command causes UDP port 161 and UDP port
1024 being closed as well.
1.3 Configuring Trap
Trap messages refer to those sent by managed devices to the NMS without request.
They are used to report some urgent and important events (for example, the rebooting
of managed devices).
1.3.1 Configuration Prerequisites
Basic SNMP configuration is performed.