METRObility Optical Systems CenturyStack 8100 Programmierhandbuch
Network Management Guide
Lancast®
CenturyStack®
8100 Managed Hub
10/100Mbps
© 1998-1999 METRObility Optical Systems, Inc. All rights reserved. Printed in USA.
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reserved. No part of this publication may be reproduced, stored in a retrieval system, translated, tran-
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Systems, Inc.
Lancast and CenturyStack are registered trademarks of METRObility Optical Systems, Inc. All other
trademarks appearing in this manual are the property of their respective owners.
The information contained in this document is assumed to be correct and current. The manufacturer is not
responsible for errors or omissions and reserves the right to change specifications at any time without
notice.
Table of Contents
Managed CenturyStack®10/100Mbps Hub Network
Management Guide
Introduction ...............................................................................................7
Overview of Managed CenturyStack 8100 Hub ........................ 7
Network Management ................................................................ 8
Remote Network Monitoring (RMON)..................................8
MIB Browser Management .................................................... 8
Web-based Management ........................................................8
SNMP Management Systems ................................................. 8
RMON Support ..........................................................................9
RMON Statistics Group .........................................................9
RMON History Group............................................................9
RMON Alarm Group............................................................10
RMON Event Group ............................................................10
Getting Started .........................................................................................13
Web-Based Management Requirements .................................. 13
Home Page ...............................................................................13
Trap Window ............................................................................15
Device Panel............................................................................. 17
Port Icon ............................................................................... 17
Cascaded Hubs ..................................................................... 17
System Information ..................................................................18
Management Setup ..................................................................................19
Network Configuration ............................................................19
Ethernet Menu ......................................................................19
Slip Menu ............................................................................. 20
Serial Port Configuration ......................................................... 21
Console Menu ...................................................................... 21
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2
4 CenturyStack 8100 Managed Hub
Out-of-Band Menu ............................................................... 22
SNMP Community ................................................................... 23
Trap Receiver ...........................................................................24
Controlling CenturyStack Hubs.............................................................. 25
Group Control .......................................................................... 26
Port Control .............................................................................. 28
Switch Module Control ............................................................30
2/3port Bridge Module Control............................................ 30
Redundant Link Control...........................................................32
Configuring Link Pairs.........................................................32
Editing a Link Pair ............................................................... 33
Deleting a Link Pair ............................................................. 33
Intrusion Control ...................................................................... 34
Monitoring the Network ..........................................................................37
Group Statistic Information...................................................... 37
Port Statistics Information........................................................ 38
Address Tracking......................................................................41
Address Search Information.....................................................43
Broadcast Storm Protection...................................................... 45
Broadcast Storm Detected ....................................................47
Remote Network Monitoring................................................................... 49
Statistics Group Configuration................................................. 51
Adding a Statistics Group..................................................... 51
Deleting a Statistics Entry ....................................................52
Modifying a Statistics Group ............................................... 52
History Group Configuration ................................................... 53
Adding a RMON History Group ..........................................53
Deleting a RMON History Group ........................................ 54
Modifying a RMON History Group.....................................54
Alarm Group Configuration .....................................................54
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4
5
5
6
Event Group Configuration ...................................................... 61
Statistics Information ............................................................... 63
History Information..................................................................65
Event Log .................................................................................68
System Utility...........................................................................70
System Restart......................................................................70
Additional Information............................................................................71
Agency Compliance ................................................................. 71
RFI Statements ......................................................................... 71
Standards Compliance..............................................................72
Warranty & Servicing...............................................................72
6 CenturyStack 8100 Managed Hub
Introduction 7
Introduction
Overview of Managed CenturyStack 8100 Hub
The Managed CenturyStack 8100 Hub is a series of auto sensing dual
speed, manageable and stackable hubs. The Managed CenturyStack Series
consists of masters and managed slaves with 12 or 24 ports. The features
and functions of the Managed CenturyStack make it a powerful, cost
effective solution for large campus networks and rapid growth companies.
All models of the Managed CenturyStack accept slide-in expansion
modules, adding more power and versatility, such as: Bridging 10Mbps
and 100Mbps segments and extending distances up to 2 kilometers.
The 8112-01-M master model shown below, includes a Network
Management Unit (NMU), Mini Console, 12 dual-speed auto sensing
ports, 2 MDI-II ports and a multi-purpose expansion slot.
CenturyStack Hub 8112-01-M
This manual describes how to manage the Managed CenturyStack Hub
through supported Network Management features such as local console,
TELNET, SNMP, RMON, and Web-Based Management.
MDI-II
10/100 Mbps Dual Speed Ethernet Hub
MDI-II
1x 2x 3x 4x 5x 6x 9x8x7x 10x 11x 12x
Switch Module
Installed
CenturyStack TM
¤
8112-01-M
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Enter
ID
8 CenturyStack 8100 Managed Hub
Network Management
The Managed CenturyStack Hubs offer extensive management functions
including local console, remote telnet, RMON Management, MIB
Browser Management, Web-Based Management and SNMP Management.
Remote Network Monitoring (RMON)
Remote Monitoring allows users to monitor LANs remotely. Users can
remain at one station and collect information from many different LANs.
Managed CenturyStack supports Remote Network Monitoring and enables
the user to set up for RMON using Web-Based Management.
MIB Browser Management
Managing CenturyStack Hubs through a MIB browser can be an eco-
nomical alternative. MIB browsers are easy to obtain and often available
as shareware, or are put on management platforms such as HP OpenView
or SNMPc. Management Information Base (MIB) browsers are simple
utilities for monitoring and configuring the MIB objects supported by
Managed CenturyStack.
Web-Based Management
Managed CenturyStack Web-Based Management enables users to monitor
and manage the hubs using the familiar interface of a web browser. For
more detailed information, refer to Chapter 1 of this guide.
SNMP Management Systems
SNMP is a standard management protocol that is supported on many
general network platforms such as: SunNet Manager, HP OpenView for
UNIX, HP OpenView for NT, SNMPc and others.
NOTE: The SNMP agent, TCP/IP stack and the Web engine are
implemented on the 10Mbps bus of the master hub. Therefore the
10Mbps segment must be used for Web-Based Management in the
absence of a switch module.
Introduction 9
RMON Support
RMON is a major step forward in internetwork management. It defines a
remote monitoring MIB that supplements MIB-II and provides the
network manager with vital information about the internetwork. The
Managed CenturyStack Hub Series fully supports RMON Management
Groups 1, 2, 3, and 9, and users can set up for RMON Management using
Web-Based Management, or SNMP Management. With these capabilities,
Managed CenturyStack provides an effective and efficient way to monitor
networks. For more detailed information, refer to Chapter 5 of this guide.
RMON Statistics Group
RMON group 1 is also recognized as Statistics Group, which contains the
basic statistics for each monitored network. This group consists of a
single table, with one entry for each monitored interface. The statistics
group provides useful information about the load on a network and the
overall health of the network.
Managed CenturyStack’s RMON Management enables users to set up
Statistic Groups to record various statistics counters. The statistics group
contains statistics measured by the probe for each monitored interface on
the hub. These statistics take the form of free running counters that start
from zero when a valid entry is created. Users can create up to 16 Ether
Statistics entries. Syntax and semantic checking are performed to verify
the value input by the user before it can be set to the Ether Statistics
group. The valid Ether Statistics configuration data is saved in the system
nonvolatile memory (NVRAM).
RMON History Group
RMON group 2 is also recognized as History Group, which is used to
define sampling functions for one or more of the monitor’s interfaces. It
contains two tables: historyControlTable, which specifies the interface and
the details of the sampling function, and either HistoryTable, which
records the data.
Managed CenturyStack RMON Management enables users to set up
History Groups. The history control group controls the periodic statistical
sampling of data from various types of networks. The history Control
Table stores configuration entries that each define an interface, polling
10 CenturyStack 8100 Managed Hub
period, and other parameters. Once samples are taken, the data is stored as
an entry in a media-specific table. Each entry defines one sample, and is
associated with the history Control Entry that caused the sample to be
taken. Each counter in the ether History Entry counts the same event as its
similarly named counterpart in the Ether Stats Entry, except that each
value here is a cumulative sum during a sampling period.
The user can create up to 16 History Control Entries.
RMON Alarm Group
RMON Alarm Group is used to define a set of thresholds for network
performance. Managed CenturyStack RMON Management enables users
to set up Alarm Groups. The Alarm Group periodically takes statistical
samples from variables in the probe and compares them to thresholds that
have been configured. The alarm table stores configuration entries that
define a variable, polling period, and threshold parameters. If a sample is
found to cross the threshold values, an event is generated. This function
generates one event as a threshold and is crossed in the appropriate
direction. No more events are generated for that threshold until the
opposite threshold is crossed.
Managed CenturyStack provides the threshold control function to support
the RMON Alarm Group. Up to 16 Alarm Control Entries can be created.
The syntax and semantic checking is performed to verify the value input
by the user before it can be set to the object of the Alarm Group. The valid
Alarm Group configuration data is saved into the system NVRAM.
Managed CenturyStack periodically monitors the threshold value of
counter objects that have been specified as the RMON Alarm Variable.
The associated RMON event is raised and the proper event action is
performed when the value of counter object crosses its threshold value as
specified in the RMON Alarm Threshold object.
RMON Event Group
RMON Event Group supports the definition of events. An event is
triggered by a condition located in the MIB, and an event can trigger an
action defined elsewhere in the MIB. An event may also cause informa-
tion to be logged in this group and may cause an SNMP trap message to
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