3Com IntelliJack NJ200 Supplementary Manual
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3Com IntelliJack NJ200 Supplementary Manual

3com intellijack nj200: supplementary guide
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TECHNICAL BRIEF
3Com
NJ200
®
Network Jack
Management
Feature:
Virtual LANs
and Traffic
Prioritization

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Summary of Contents for 3Com IntelliJack NJ200

  • Page 1 TECHNICAL BRIEF 3Com NJ200 ® Network Jack Management Feature: Virtual LANs and Traffic Prioritization...

  • Page 2: Table Of Contents

    Benefits Support for port-based VLANs enables the 3Com icant IT and business benefits. For example, it can help: • Reduce the costs of IT equipment moves, upgrades, and other changes •...

  • Page 3: Vlan Configuration And Setup

    3 C O M ® N J 2 0 0 N E T W O R K J A C K — V L A N S & T R A F F I C P R I O R I T I Z AT I O N VLAN Configuration and Setup Forwarding Outbound-Traffic to the LAN...
  • Page 4 Do not modify tag information tag information Forward frame to PAN port Figure 2. 3Com Central Configuration Manager GUI enables point-and-click remote administration of NJ200 Network Jacks. How the LAN port handles traffic coming from the PAN Remove all tag...

  • Page 5: Setting The Pan Port Associations

    Setting the PAN Port Associations The PAN (device) ports can support up to four different VLAN domains. 3Com Central Configuration Manager lets you assign individual ports to four separate VLANs, all ports to the same VLAN, or any combination in between. The following example illus- trates how the Port Associations are used to create two port groups assigned to separate VLANs—where the ports in one group cannot share traffic with ports in the other.

  • Page 6: Setting Outgoing And Incoming Tag Schemes

    To reset the LAN port and recover network communications, the NJ200 Network Jack must be connected to a hub or flat VLAN. It can then be reconfigured with the proper VID using 3Com Central Configuration Manager. Port Association box is checked.
  • Page 7 3 C O M ® N J 2 0 0 N E T W O R K J A C K — V L A N S & T R A F F I C P R I O R I T I Z AT I O N Figure 5.

  • Page 8: What Is Traffic Prioritization

    3 C O M ® N J 2 0 0 N E T W O R K J A C K — V L A N S & T R A F F I C P R I O R I T I Z AT I O N What is Traffic Prioritization? IEEE 802.1D/D17 (which incorporates IEEE 802.1p) traffic prioritization lets IT staff establish packet-based control over network traffic.

  • Page 9: Traffic Prioritization Configuration And Setup

    3 C O M ® N J 2 0 0 N E T W O R K J A C K — V L A N S & T R A F F I C P R I O R I T I Z AT I O N Traffic Prioritization Configuration and Setup Figure 6.
  • Page 10 N J 2 0 0 N E T W O R K J A C K — V L A N S & T R A F F I C P R I O R I T I Z AT I O N Figure 7. Traffic priority levels are individually configured for each PAN port. Configuring traffic priority levels is accomplished using 3Com Central Configuration Manager: 1. Open 3Com Central Configuration Manager menu.

  • Page 11: Setting Up Traffic Priority Schedule Policy

    Use this setting to modify how the switch will receive frames from each queue: 1. Open 3Com Central Configuration Manager 2. From the list of devices, select an NJ200/NJ205 and then select also highlight and right-click on the NJ200/NJ205 and select Hardware Settings 3.

  • Page 12: Business Application

    24-hour delay that cost the company many thousands of dollars. This disaster might have been avoided if IT staff had installed 3Com NJ200 Network Jacks in all offices and conference rooms as part of the infrastructure upgrade. Using port-based VLANs, all VoIP transmissions could have been directed through their own subnet, regardless of what conference room was being used.

  • Page 13: Appendix A: Default Settings

    3 C O M ® N J 2 0 0 N E T W O R K J A C K — V L A N S & T R A F F I C P R I O R I T I Z AT I O N Appendix A: Default Settings Global Switch Setting Default Value...

  • Page 14: Appendix B: Additional Notes

    While every effort is made to ensure the information given is accurate, 3Com does not accept liability for any errors or mistakes which may arise. Specifications and other informa- tion in this document may be subject to change without notice.

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