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Dedicated Network Management through Port Segmentation

IP.com Disclosure Number: IPCOM000115444D
Original Publication Date: 1995-May-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 4 page(s) / 143K

Publishing Venue

IBM

Related People

Prorock, TJ: AUTHOR

Abstract

Disclosed is a method for providing dedicated network management to stackable Ethernet Hubs. Dedicated network management is achieved by configuring the management agent in an Ethernet stackable hub with its own, dedicated, network management port. This dedicated network management port is segmented from the rest of the data traffic that flows through the Ethernet stackable hub.

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This is the abbreviated version, containing approximately 51% of the total text.

Dedicated Network Management through Port Segmentation

      Disclosed is a method for providing dedicated network
management to stackable Ethernet Hubs.  Dedicated network management
is achieved by configuring the management agent in an Ethernet
stackable hub with its own, dedicated, network management port.  This
dedicated network management port is segmented from the rest of the
data traffic that flows through the Ethernet stackable hub.

      On Ethernet LAN segments, stackable work group hubs can consist
of 16 to 160 10BaseT ports depending on the configuration.  During
periods of peak network activity, the LAN utilization that is
generated by a large number of active ports can prevent network
management frames from reaching the management agent in the Ethernet
Hub.  Utilization rates as low as 30% can create a situation on an
Ethernet LAN segment where so many collisions are generated that the
effective throughput of frames, including network management frames,
is greatly reduced.  Although network throughput can begin to degrade
at 30% utilization, typically peak network utilization on Ethernet is
reached at 40% to 60%.  It is at such times of peak traffic
conditions and network saturation that network management is the most
beneficial, but it is also at these times when network management is
least likely to occur due to network saturation.  Disclosed is an
implementation that provides dedicated network management to Ethernet
stackable Hubs during high traffic periods on an Ethernet LAN
segment.

      Most Ethernet stackable Hubs contain a management agent that
provides the network management function for the entire stackable
work group hub.  These designs integrate the management agent into
the data path, collision domain, of the entire stack of hubs.
Because the management agent is on the same shared Ethernet L AN
segment with the rest of the ports in the stackable hub, a
degradation of network management service occurs during periods of
peak network utilization.

      Dedicated network management can be provided by configuring the
management agent in the Ethernet stackable hub with its own,
dedicated, network management port.  This dedicated network
management port is segmented from the rest of the ports in the
Ethernet stackable hub.  Configuring the management agent on its own
dedicated port, partitions the management traffic from the rest of
the traffic in the Ethernet stackable hub.  Therefore, while the rest
of Ethernet stackable hub may be experiencing network saturation, the
dedicated segment would still be able to receive frames from the net
work manager.  Although the management agent resides on its own
dedicated segment, it can still retrieve the necessary management
information from the rest of the stackable hub via the network
management support chips that exist for Ethernet hubs.

      The block diagram in Fig. 1 illustrates the typical Ethernet
stackable work group hub configuration...