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C H A P T E R

 Overview

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Overview

This chapter describes the features and components of the Cisco 1538 series Micro Hubs 
10/100 (hereafter collectively referred to as the “Micro Hubs”). These class-II repeaters are 
a part of the Cisco Networked Office stack, a family of stackable, desktop networking 
platforms designed for small workgroups.

Overview of the Micro Hubs

The Micro Hubs are stackable, 8-port, 10/100-Mbps, autosensing Fast Ethernet class II 
repeaters with internal bridging. 

The Cisco 1538M Micro Hub 10/100 (hereafter referred to as the “managed hub”) can 
be monitored through a web console or the command-line interface. This hub can 
manage a stack of up to 3 additional Micro Hubs and serve up to 32 user connections. 
For an overview of the management features of this hub, see the “Management Options 
(Cisco 1538M Hub)” section on page 1-7.

The Cisco 1538 Micro Hub 10/100  (hereafter referred to as the “manageable hub”) is 
without internal management applications but can be monitored and controlled through 
interconnection to a managed hub.

Either hub model can be a standalone networking device or can connect to other routers, 
switches, and hubs to form a larger network. You can also stack and connect up to four hubs 
through the rear-panel ports to form a larger network.

Summary of Contents for 1538 series

Page 1: ... to as the managed hub can be monitored through a web console or the command line interface This hub can manage a stack of up to 3 additional Micro Hubs and serve up to 32 user connections For an overview of the management features of this hub see the Management Options Cisco 1538M Hub section on page 1 7 The Cisco 1538 Micro Hub 10 100 hereafter referred to as the manageable hub is without intern...

Page 2: ... for hub recovery tasks Cisco Discovery Protocol CDP enables network management stations to discover the hub in a network topology Manages up to 32 ports in a 4 hub stack with one IP address Stacking Integrated stacking ports allow up to four hubs in a single collision domain Two managed hubs can be deployed for management backup Performance Autosensing on all ports allows automatic configuration ...

Page 3: ...7 10 MBPS COL ACT 100 MBPS COL ACT PWR Solid green Micro Hub has power Solid amber POST in progress After power on POST nonfatal failure With blinking port LED POST fatal failure Off Micro Hub does not have power Hub port status Solid green Good connection to network device link Blinking green Data is being sent or received through this port Blinking rate reflects the amount of data being received...

Page 4: ...2x 3x 10 100 4x CONSOLE 2 3 4 5 6 7 8 Hub ports 1X through 8X RJ 45 Use 10BaseT or 100BaseTX Ethernet straight through cables to connect network devices MDI MDI X button for port 5 OUT default Connect 10BaseT or 100BaseTX PC workstation router or server with straight through Ethernet cable IN Connect another Cisco hub Hub port status Solid green Link is established at 100 Mbps Off Link is establis...

Page 5: ...ernet straight through cables to connect network devices MDI MDI X button for port 5 OUT default Connect 10BaseT or 100BaseTX PC workstation router or server with straight through Ethernet cable IN Connect another Cisco hub Hub port status Solid green Link is established at 100 Mbps Off Link is established at 10 Mbps or no link Power receptacle Connect power cord to this receptacle Lock slot Stack...

Page 6: ... to Create Larger Managed Networks For more information about stacking Micro Hubs see Installing Micro Hubs in a Stack on page 2 8 MDI MDI X DOWN UP 5x MDI X MDI LED ON OFF SPEED 100BaseTX 10BaseTX RATING 100 127 200 240 V 0 3A 0 2 50 60 Hz 1 6x 7x 8x 1x Cisco 1538 2x 3x 10 100 4x 2 3 4 5 6 7 8 DOWN UP 5x MDI X MDI LED ON OFF SPEED 100BaseTX 10BaseTX RATING 100 127 200 240 V 0 3A 0 2 50 60 Hz 1 6x...

Page 7: ...CLI and SNMP This section provides the following information List of default configuration settings for the hub Overview of the Cisco 1538 Hub Manager and the basic management tasks you can perform using it Note Procedures for performing management tasks and detailed information about the Cisco 1538 Hub Manager pages are also provided in the Cisco 1538 Hub Manager online help Overview of the CLI w...

Page 8: ...ub to the Factory Defaults section on page 4 14 Table 1 2 Default Settings and Cisco 1538 Hub Manager Pages Feature Default Setting Hub Manager Page Management IP information 0 0 0 0 IP Management Page Stack management Group Management Page Cisco Discovery Protocol CDP Enabled CDP Management Page Performance Tuning Speed of ports Autonegotiate Port Management Page Security Hub password None Home P...

Page 9: ...t the fields lists check boxes and buttons Specific procedures for performing management tasks To use the hub manager you must have one of these web browsers installed on your management station Netscape Communicator 4 03 or higher Microsoft Internet Explorer 4 01 or higher Management Tasks Supported on the Hub Manager The management tasks you can perform from the hub manager can be grouped as des...

Page 10: ...CLI refer to the Cisco 1538 Series Micro Hub 10 100 Command Reference Table 1 3 Configuration and Monitoring Tasks Changing Hub and Port Configuration Settings Assigning or Changing Basic Hub Information on page 3 4 Changing the Port Settings on page 3 11 Managing the Hub Segments on page 3 17 Changing the Hub IP Information on page 3 21 Changing the CDP Settings on page 3 26 Changing the System C...

Page 11: ... can be part of a network management system NMS and the SNMP agent can reside on a networking device such as a hub You can compile the hub MIB files with your network management software The SNMP agent can respond to MIB related queries being sent by the NMS An example of an NMS is the CiscoWorks network management software CiscoWorks uses the hub MIB variables to set device variables and to poll ...

Page 12: ...s described in Table 1 4 Table 1 4 SNMP Manager Operations Operation Description get request Retrieves a value from a specific variable get next request Retrieves a value from a variable within a table 1 1 An SNMP manager does not need the exact variable name It sequentially searches to find the needed variable from within a table get response Reply to a get request get next request and set reques...

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