GarrettCom Magnum 3000 - Manual (Page 41)

Magnum 3000 Stackable Hubs Installation and User Guide (07/06)
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Both the Magnum 3000-MB and 3000-AGT SNMP Agents are in compliance
with MIB1, MIB2, and the RFC 1368 Standard Repeater MIB, and fully support all
Repeater MIB functionality as defined by IEEE 802.3 specifications. In addition to the
basic Standard Repeater MIB, the Magnum 3000 SNMP Agents include the Port Monitor
and Port Address Tracking MIB extensions. Magnum SNMP Agents also comply with
RFC 1155-SMI, RFC 1212, RFC 1213-MIB, and RFC 1215.
The completeness of the Magnum SNMP Agents allows for in depth network
statistics generation and monitoring by LAN manager software products. While the
basic Standard Repeater MIB only provides repeater statistics, the MIB Monitor
extensions allow for individual port statistics, including readable frames and octets, FCS
errors, alignment errors, runts, collisions, as well as other performance-related port
conditions. These MIB Monitor extensions can prove helpful as diagnostics in many
ways, such as understanding why a port is not receiving packets.
The Magnum SNMP Agents’ Address Tacking MIB extensions allow the LAN
manager to poll for the source address of the most recent packet received on an
individual port, as well as the number of times the source of the port’s packets has
changed. This feature is useful in the compilation of network traffic statistics, since the
LAN manager is able to see not only how many frames were received, but also where
they came from. (This may be very helpful in determining the need for local segment
isolation by means of a local bridge or BPM.)
Most SNMP network management software packages (including Castle Rock’s
“SNMPc” product) allow both the standard repeater and enhanced port statistics to be
viewed as a graph, chart or table.
In addition to statistics compilation, Magnum SNMP Agents also allow the
LAN manager software to remotely disable ports if necessary. For example, it may be
necessary to temporarily remove ports from the network, such as during network testing.
With the Magnum SNMP Agents Standard Repeater MIB commands, this can easily be
accomplished through the LAN manager software.
A list of specific commands supported by the Magnum SNMP agent appears in
Table 5.1.3.