3Com Switch 4210 9-Port, Configuration Manual

Page: 357 / 567

Configuring Trap Parameters 355
n
A Switch 4210 provides the following functions to prevent attacks through
unused UDP ports.
■
Executing the snmp-agent command or any of the commands used to
configure SNMP agent enables the SNMP agent, and at the same opens UDP
port 161 and UDP port 1024 used by SNMP agents and SNMP trap clients
respectively.
■
Executing the undo snmp-agent command disables the SNMP function and
closes UDP port 161 and UDP port 1024 as well.
Configuring Trap
Parameters
Configuring Basic Trap Trap messages are 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).
Note that basic SNMP configuration is performed before you configure basic trap.
Encrypt a plain-text password
to generate a cipher-text one snmp-agent
calculate-password
plain-password mode { md5 |
sha } { local-switch fabricid |
specified-switch fabricid
switch fabricid }
Optional
This command is used if
password in cipher-text is
needed for adding a new
user.
Add a user to an SNMP group snmp-agent usm-user v3
user-name group-name [
cipher ] [
authentication-mode { md5
| sha } auth-password [
privacy-mode { des56 }
priv-password ] ] [ acl
acl-number ]
Required
Set the maximum size of an
SNMP packet for SNMP agent
to receive or send snmp-agent packet
max
- size byte - count
Optional
1,500 bytes by default.
Set the device switch fabric ID snmp-agent local - switch
fabricid switch fabricid
Optional
By default, the device switch
fabric ID is "enterprise
device
information".
Create or update the view
information snmp-agent mib - view {
included | excluded }
view - name oid - tree [ mask
mask-value ]
Optional
By default, the view name is
"ViewDefault" and OID is 1.
Table 274 Configure basic SNMP functions (SNMPv3)
Operation Command Description
Table 275 Configure basic Trap
Operation Command Description
Enter system view system-view -