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3-50 Switch Management
GigWorks MkII-16 Switch Model MKII-BASE16
59003-01 Rev. A Installer's/User's Manual
Managing the Switch Using SNMP
symbols to alert the administrator to problems.
Statistics Displays Agents provide statistics about the overall
behavior of network components and the station
manager displays the information in either
numeric or graphical formats.
The Node Agents
The Switch has a built-in SNMP-compliant node agent. A management or node
agent is a specific software component that resides on a network node (such as
switches, routers, and servers). The agent collects information about that particular
node and/or its environment although the agent does not have the intelligence to use
the information. When a network node contains an agent, it is referred to as a
managed node. If the node is SNMP-compliant or SNMP-manageable, that means
the resident agent supports the SNMP protocol for information exchange.
When the agent communicates with the network management station, the
following main tasks are performed over this link:
Task Description
Information Provision The node agent provides information about the
network nodes to the management station.
MIB Entry Editing When requested by the network management station, the
node agent updates, adds, or removes entries (such as
routing table entries) in the database maintained by the
agent.
Error Reporting The node agent reports problems to the management
station and/or responds to the station’s status queries.
The Management Information Bases (MIBs)
A MIB is a database, maintained by a node agent, that contains configuration and
statistical data about nodes on a network as well as information pertaining to the
performance of the node and its connections to different network nodes. The
network manager queries the MIB through either the agent or proxy agent
software and can specify changes to the configuration. A MIB describes the
objects (or entries) included in the database. Each object has four properties that
define what each object looks like. MIB object properties include:
Property Description
Name This property defines the name of the particular object. For example,
sysUpTime. It is simply a label.
Syntax This property specifies the data type such as integer, octet string,