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Simple Network Management Protocol<br />

3<br />

Simple Network Management Protocol<br />

Simple Network Management Protocol (SNMP) is a communication protocol<br />

designed specifically for managing devices on a network. Equipment commonly<br />

managed with SNMP includes switches, routers and host computers. SNMP is<br />

typically used to configure these devices for proper operation in a network<br />

environment, as well as to monitor them to evaluate performance or detect potential<br />

problems.<br />

The switch includes an onboard SNMP agent that continuously monitors the status<br />

of its hardware, as well as the traffic passing through its ports. A network<br />

management station can access this information using software such as HP<br />

OpenView. Access rights to the onboard agent are controlled by community strings.<br />

To communicate with the switch, the management station must first submit a valid<br />

community string for authentication. The options for configuring community strings,<br />

trap functions, and restricting access to clients with specified IP addresses are<br />

described in the following sections.<br />

Setting Community Access Strings<br />

You may configure up to five community strings authorized for management access.<br />

All community strings used for IP Trap Managers should be listed in this table. For<br />

security reasons, you should consider removing the default strings.<br />

Command Attributes<br />

• SNMP Community Capability – Indicates that the switch supports up to five<br />

community strings.<br />

• Community String – A community string that acts like a password and permits<br />

access to the SNMP protocol.<br />

Default strings: “public” (read-only), “private” (read/write)<br />

Range: 1-32 characters, case sensitive<br />

• Access Mode<br />

- Read-Only – Specifies read-only access. Authorized management stations are<br />

only able to retrieve MIB objects.<br />

- Read/Write – Specifies read-write access. Authorized management stations are<br />

able to both retrieve and modify MIB objects.<br />

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