NETGEAR GS748TS - ProSafe 48 Port Gigabit Stackable Smart Switch, User Manual

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GS748T Software User Manual
4-18 Configuring the Switch
v2.0, April 2007
Enabling Switch Management using SNMP
SNMP (Simple Network Management Protocol) is a transport protocol used for network
management. The protocol is used in communication between a Manager—the management
station—and an agent within the managed device, in this case your switch. The Manager polls the
agent which responds by returning data from the Management Information Bases (MIBs) that it
maintains on the managed device to indicate its status. An agent can return Traps to the Manager,
Traps are messages that alert the manager to conditions that may need attention. Managers and
Agents work within Communities which are defined to confine messaging within named groups.
An agent only responds to requests from Managers within its community.
The SNMP page enables you to limit the IP addresses from which the MIBs of the switch can be
accessed and to which IPs the switch sends SNMP traps. The switch only responds to requests
from management computers whose IP addresses are carried in a list. This list also holds Privilege
information that controls which IPs have read-only or read-write access. You can also select the
traps which the switch sends to the hosts from the following trap events. An “Admin” field must
be set to “Enable” to allow management host communication.
Trap Events are indicated in 3 columns:
• T1: Authentication fail - The switch generates an SNMP trap when a host tries to gain access
to the switch but the host's IP is not in the SNMP host table.
• T2: Device bootup - The switch generates an SNMP trap when it reboots.
• T3: Link Up/Down - The switch generates an SNMP trap when one of its ports changes its link
status.
To enable management from an SNMP Manager:
1. From the main Navigation Pane menu, select:
Switch
→
Advanced
→
SNMP; the switch configuration utility displays the following
screen.