Cabletron Systems NB25 E, NB20E user manual Remote Lanview

INTRODUCTION

if all three bridges are on line and Node A sends a packet to Node B. The packet will be forwarded through Bridges 1 and 3, and through Bridge 2, causing the packet to be circulated many times around the data loop. If Bridge 1 has priority over Bridge 2, the Spanning Tree Algorithm will place Bridge 2 in blocking, preventing the packet from being forwarded through Bridge 2. If Bridge 1 should fail, the Spanning Tree Algorithm will be modified automatically so that the packet will be forwarded through Bridge 2.

1.6REMOTE LANVIEW

Both the NB20E and the NB25E can be controlled and managed by Cabletron Systems' optional Remote LANVIEW - Network Control Management for the Cabletron Systems' Bridges. Remote LANVIEW allows you to control and manage multiple NB20Es or NB25Es from a single Ethernet Workstation through Cabletron System NCM-DOS™ or Remote LANVIEW/Windows™ or an individual NB25E through an RS232 port on the bridge.

Remote LANVIEW provides the necessary management tools so that a bridge can operate at its full capacity. The network manager's ability to set up parameters within Remote LANVIEW ensures optimal performance for each bridge, and, hence, each network. For example, a network manager can monitor: the flow of traffic through a bridge, the status of a database, the bridge protocol and port parameters, and the bridge setup. The number of frames received at the bridge is recorded as well as a breakdown of the progress through the bridge, for example the frames discarded inbound or the frames forwarded outbound. A breakdown of errors is provided so the network manager can pinpoint potential problem areas in a network.

Bridge protocol and port parameters such as Topology Change, Designated Root, and Path Cost are provided, so that the network manager can keep track of bridge activity and cost. Certain parameters can be altered to accommodate a network's particular requirements.

Remote LANVIEW provides the network manager with the necessary control to operate a bridge effectively. For instance, a network manager can alter bridge setup, erase a database, disable or restart a bridge, reset counters, or restore default settings.

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