Roving Rmon - 3Com 3C510510B User Manual

14
Internetworking Port
The Internetworking Port is a shielded RJ45 port that allows
switch/bridge connection to the ring. This port may also be used as a
regular lobe port. This is a data communication port and cannot be
used for any other purpose. The Internetworking LED on the front panel
corresponds to this port and indicates the status of this port. See item 3.
15
Network Management Module Console Port
Each Network Management Module has a standard RS-232 serial port for
communicating with the module's setup console. Refer to the Network
Management Module manual for complete instructions.
16
Network Management Module Reset
The Network Management Module can be reset at any time by pressing
this button. When pressed, all data that has been collected by the
module will be lost (history files, alarm thresholds, captured packets etc.).
Resetting this module will NOT affect the operation of the network. Use
the tip of a nonconductive instrument to toggle the switch.
17
Network Management Module
There are two optional Network Management modules which provide
real-time monitoring and control of the entire stack via the Simple
Network Management Protocol (SNMP). The modules measure network
performance and monitor each individual device within the stack.
Using the Remote Monitoring Management Information Base (RMON
MIB) of SNMP, the modules collect statistics, provide historical data,
traffic patterns, and collect remote packet captures. Automatic port
mapping provides a continuous real-time diagram of all hub-to-hub
interconnections, adapter card locations and adapter card addresses by
hub port.
Each module has an RS-232 DB9 serial port for local console connection
for configuring IP addresses, routing tables, and communication
parameters. This port can also be used as a point-to-point link for
remote communications.
Default communication settings for the RS-232 port are:
9600 Baud, 8 data bits, 1 stop bit, No parity
Access to the Network Management module is provided in-band via the
Transcend Enterprise Manager application which operates on IBM
NetView/6000®, HP OpenView®, SunNet™ Manager, and Windows™
platforms.
The basic RMON Agent (#3C510502) provides History, Ring Security,
Control and Stack Views, MAC-to-MAC Port Mapping and MAC Packet
Capture. In addition, this module uses 1 MB of RAM for storage of
historical data and can be upgraded to 5MB. The Advanced RMON
Agent (#3C10505) provides all of the features of the basic RMON module
and also provides IP and IPX Mapping, Data Layer Capture/Filter Matrices,
Protocol Breakdown, and Station History on a per station basis. In
addition, this module uses 4MB of RAM for storage and can be upgraded
to either 8 or 12 MB. Refer to the SuperStack II Hub TR Network
Management Module manual for instructions on installing the modules
and details on the distinct features of each module.
18
Cascade Cable Connectors
You can add up to 20 units in a single stack using the Cascade cable
connectors. You need one Cascade cable (12 inch cable #3C510507
[included with each hub] or 4 foot cable #3C510509) for each additional
unit.
Place the units on top of each other, preferably in a rack (see Rack Mount
instructions). If you are not using a rack, ensure that the feet are
installed on the bottom of the units throughout the stack and that the
stack extends no more than eight units high.
Connect units in sequence starting from the Down port on the topmost
unit which connects to the Up connector on the next hub in the stack.
The Down connector of the next unit connects to the Up connector on
the next one and so on (Down-Up-Down-Up) until all units are
connected. The bottommost unit should be connected to the hub
above it via the Up connector and the Down connector should remain
vacant unless using a Redundant Cascade cable (#3C510508).
An optional Redundant Cascade cable provides a redundant path for the
Cascade and connects the bottommost unit directly to the topmost unit.
Note that this cable is not interchangeable with a regular Cascade
cable. The Cascade LEDs on the front panel indicate the status of the
Cascade connection.
SuperStack II Hub TR hubs can be stacked in any combination with
earlier LinkBuilder FMS TR hubs (#3C510500 and #3C510501). Refer to
figure below for proper cascade cable installation
19
Ring In/Ring Out Module
The Ring In/Ring Out (RI/RO) Module allows you to expand your Token
Ring beyond the capacity of the local stack to adjacent wiring closets or
any site that is too far away for the cascade cables. This module is
available with either two RJ45 shielded copper connectors (#3C510504),
two pair ST fiber optic connectors (#3C510503), or a combination
module with one copper and one pair ST fiber optic connectors
(#3C510506).
In addition two other optional Ring In/Ring Out (RI/RO) Modules
(#3C510513 and 3C510514) allow you to connect to any ONcore,
ONLine, or ONsemble Token Ring device.
All the sophisticated network management functions provided using the
Transcend application and the Network Management module are
available via the Ring In/Ring Out connections provided there is a
Network Management Module in the adjoining stack.
Refer to the Ring In/Ring Out Module manual for instructions on
installing the module into the Hub TR unit. If you should remove the
Ring In/Ring Out Module from the Hub TR, you need to replace the filler
plate to avoid accidental exposure to the electronic circuitry and to
prevent the accumulation of dust and debris.

Roving RMON

A single Network Management module (either #3C510502 or
#3C510505) can be used to manage a number of Hub TR hubs that are
stacked together and connected via Cascade cables, but isolated into
separate Token Ring networks. This allows the agent to "rove" into any
connecting hub and perform management tasks.
This feature is especially useful in stacks segmented using Token Ring
switches.
To enable the Roving RMON feature, connect the cascade cables and
isolate the cascade interfaces via software using the RS-232 console of
the Network Management module and/or the Transcend Network
Management applications, or telnet. Refer to the Network Management
Module or Transcend Enterprise Manager manuals for more information.