Configuring the Simple Network Management Protocol (SNMP)

Viewing SNMP status

From the SNMP Agent Manager's Stats menu, you can view SNMP statistics generated by the snmpstat(ADMN) command. You can select:

Active Endpoints (snmpstat) to display active transport endpoints.
Transport Table (snmpstat -t) to view all active transport endpoints, including servers.
Routing Table (snmpstat -r) to view a table of available routes and their status.
Address Table (snmpstat -a) to display address translations for remote hosts with which communications have recently occurred.
Active Interfaces (snmpstat -i) to view cumulative statistics regarding packets transferred, errors, and queue lengths.
SNMP Statistics (snmpstat -S) to display input and output statistics of the SNMP agent.

These statistics displays will, by default, show system and network names. To show numbers instead, select Display Mode from the Stats menu and select numeric.

You can also view these statistics from the command line by using snmpstat with the options shown above. Its complete syntax is:

snmpstat [options] [node] [community]

If you specify a community, you must also specify a node name. If no community argument is specified, the default community of public is used.

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Viewing the system group status

The SNMP Agent Manager's main screen displays the current system group status. You can also display this information by using snmpstat(ADMN).

The following is an example of using snmpstat with the -s option to retrieve the system group.

snmpstat system group example

# snmpstat -s paris public

System Group Description: SNMPD Version 3.0 for SCO UNIX ObjectID: SCO.1.0 UpTime: 1 hour, 1 minute, 40 seconds, 95 hundredths Contact: Trevor Jones x256 Name: paris.cities.your_company.com Location: First Floor Computer Room Services: applications, end-to-end

snmpstat takes care of formatting the information in a way that is easier to understand. For example, snmpstat converts the raw clock ticks of the agent uptime into hours, minutes, seconds, and hundredths of a second.

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Viewing active endpoints

You can view a list of active endpoints by selecting Active Endpoints from the SNMP Agent Manager's Stats menu:

The display shows:

the protocol used, for example tcp or udp.
the local address. Addresses are shown in the form host.port. Wildcard or unspecified addresses are indicated by the wildcard character, *.
the remote, or foreign, address.
the state of the connection, such as CLOSED, LISTEN, ESTABLISHED, or TIME_WAIT.

You can also obtain this information by using snmpstat(ADMN) with the -n option.

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Viewing the transport table

You can see all active Internet connections for different services by selecting Transport Table from the SNMP Agent Manager's Stats menu:

The display shows:

the protocol used, for example tcp or udp.
the local address. Wildcard or unspecified addresses are indicated by the wildcard character, *.
the remote address.
the state of the connection, such as CLOSED, LISTEN, or ESTABLISHED.

You can also use snmpstat(ADMN) with the -t option to view this information.

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Showing the routing table

You can view the routing table by clicking on Routing Table in the SNMP Agent Manager's Stats menu:

The display shows:

the destination host or network. This and the gateway host are shown as IP addresses or names depending upon the display mode set from the Stats menu.
the gateway host.
the metric, or number of hops, to the destination.
the type of route; either remote (rem) or direct (dir).
the routing protocol used, such as rip, local, or egp.
the interface used, such as the loopback interface (lo0) or a networking card (for example, net1).

In the example shown, five routes are shown for the system paris. Three of them are directly attached. These are the routes for loopback, the local system, and the cities subnet. Two others have been acquired by the RIP routing protocol from the host volga-cities.

You can also obtain this information by using snmpstat(ADMN) with the -r option.

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Viewing the address translation table

You can view address translations of sites with which SNMP recently communicated. From the SNMP Agent Manager's Stats menu, click on Address Table:

The display shows:

the contacted host.
the physical address (usually an Ethernet address) of the host.
any flags associated with the address, including dyna (dynamically allocated) and perm (permanent).
the interface associated with the connection.

You can also obtain this information by using snmpstat(ADMN) with the -a option.

Viewing active interfaces

You can view cumulative statistics for active interfaces. From the SNMP Agent Manager's Stats menu, click on Active Interfaces:

The display shows:

the name of the interface.
the symbolic and physical names of the address associated with the interface.
the interface type and speed.
the number of octets, packets, and errors detected inbound and outbound for each interface since the SNMP daemon was restarted.
The maximum transmission unit and queue length associated with each interface.

You can also obtain this information by using snmpstat(ADMN) with the -i option.

Viewing all objects in an SNMP group

You can view all SNMP objects from the SNMP Agent Manager's Stats menu by clicking on SNMP Statistics:

You can also obtain this information by using snmpstat(ADMN) with the -S option.

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