Cabletron Systems TRMM-2, Руководство пользователя

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STATION PORT INTERFACE
B-5
B.3 SIDE-BAND MANAGEMENT
The TRMM-2 supports side-band management using the STATION port
interface. In side-band management, a network manager operating a
management station on one network gains access to management control
over another separate network using a single management agent that
maintains simultaneous interfaces with both networks. The management
agent, which has an interface on each of two networks, does not bridge
the two networks, so it does not provide the management station with
access to the other networks’ user data.
However, the management agent does maintain a single database of
management-related data (operational and performance statistics) about
both interfaced networks, and this database is available for access from
either network. Therefore, a management station on one ring can
communicate with the TRMM-2’s management agent through the
STATION port interface and fully manage the FNB Ring 1 LAN without
consuming or even accessing any bandwidth on FNB Ring 1.
Side-band management enables a network manager to provide total
remote network management services with total data confidentiality.
Consider the following example. As illustrated in
Figure B-4 , a company
leasing floors of an office building offers network management services to
each client. On each floor, the company installs a hub managed by a
TRMM-2 and configures the hub to support one Token Ring LAN with
ample ports to support each client’s networking needs.
The company maintains a network connection from its own management
LAN to the STATION interface port on each client’s TRMM-2, giving the
company in-band access to the management agent on each client’s LAN,
but no access to their user data. The service company can therefore offer
full management services to each client’s LAN and guarantee that the
management connection will in no way compromise the privacy of the
client’s user data nor take up any or the client’s bandwidth.