NETGEAR GS748TS-100NAS, GS748TNA user manual Vlan

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GS748T Software User Manual

VLAN Page

A Virtual Local Area Network (VLAN) is a means of electronically separating ports on the same switch from a single broadcast domain into separate broadcast domains. By using VLANs, users can group nodes by logical function instead of physical location. For example, Engineering and Accounting department traffic can be separated from one another. VLAN memberships are manipulated by associating switch ports with VLAN IDs (VIDs).

You can choose from two types of VLAN to set up on the switch: IEEE 802.1Q VLAN (Tagged VLAN), or Port-based VLAN. You cannot mix the types on the same switch. In either case, any port can be a member of multiple VLANs.

IEEE 802.1Q VLAN: The VLAN tagging option is a standard set by the IEEE to facilitate the

spanning of VLANs across multiple switches (Reference: Appendix A and IEEE Std 802.1Q- 1998 Virtual Bridged Local Area Networks). This switch supports the creation of 64 Static- Tag VLAN groups.

This implementation separates traffic by adding a VLAN tag into the appropriate egress frames (packets) from selected switch ports. A receiving switch associates the tagged frame with the VLAN and forwards it, according to its own VLAN-to-port lookup table, to all ports on the VLAN except the ingress port. In this way, a VLAN structure may be built across a “tree” of switches.

You have the option of setting egress frames to be:

Tagged: this setting adds an 802.1Q tag into the frame leaving the selected port

Untagged: this option strips the 802.1Q tags from frame leaving the selected port. The port retains its association with the VLAN. This facility is used when these ports are connected to downstream equipment that does not recognize (and which consequently may be confused by) 802.1Q tags.

Unchanged: this option is the default and signifies that the port is not associated with a VLAN.

Every port is a member of VLAN ID 1 by default. You can change the default assignment of any port adjusting the Primary VLAN ID Setting (PVID) table. Use this feature to ensure that untagged frames reach the VLAN that you require.

Port-based VLAN: This implementation confines VLAN members to the ports on the particular switch, that is, the VLANs cannot span multiple switches. VLAN membership of ports is determined in a lookup table that you set up when you configure the switch. You can create up to 48 port-based VLANS. Every port belongs to VLAN ID 1 by default.

Configuring the Switch

4-7

v2.0, April 2007

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Contents NETGEAR, Inc Statement of Conditions TrademarksCertificate of the Manufacturer/Importer Bestätigung des Herstellers/ImporteursEurope EU Declaration of Conformity Regulatory Compliance InformationFCC Information to User FCC Requirements for Operation in the United StatesGS748T Smart Switch Product and Publication Details Contents Appendix a Specifications and Default Values Appendix C Network Cabling V2.0, April Who Should Use this Book How to Use This BookAbout This Manual Bold Conventions, Formats and ScopeHtml Manual Navigation How to Print this ManualDocument Date Version Description Part Number Revision HistorySwitch Management Interface Chapter Switch Management OverviewSystem Requirements Switch Management MethodsNetwork with Dhcp server Getting Started-Smart Wizard DiscoveryNetwork without Dhcp Server Manually Assigning Network Parameters V2.0, April Additional Utilities Web AccessPassword Change Firmware Upgrade Exit V2.0, April Starting Web Management Chapter Basic Web ManagementNetgear Home Page and Switch Status V2.0, April Description of Switch Status Parameters V2.0, April System Functions Firmware Menu Managing System Files-Backup and RestoreTo back up files Factory ResetTo restore saved settings Logout Resetting the SystemV2.0, April Using the Switch Configuration Utility Chapter Configuring the SwitchPort Configuration Viewing Packet Statistics V2.0, April Ieee 802.1p-based QoS Regulating Traffic Rates using Quality of Service SettingsPort-based QoS Differentiated Services Code Point DSCP-based QoS Vlan Adding and Configuring Ieee 802.1Q Vlan Groups Reconfiguring an Ieee 802.1Q Vlan Group Reconfiguring a Port-based Vlan Adding and Configuring Port-based VLANsSelecting a Management Vlan Creating Port Trunks to Increase Link BandwidthSetting up Port Trunks Removing Port Trunks Using a Sniffer Port to Monitor TrafficControlling Per-port Packet Throughput Jumbo Frame SupportStorm Control Dropping Traffic that is Flooding a Port Using Spanning Tree Protocol to Prevent Path LoopsV2.0, April V2.0, April Enabling Switch Management using Snmp To Add a MAC Address Controlling Switch Access by MAC Address and Vlan IDTo Remove a MAC Address from the Table Using Igmp Snooping to Route Packets Based on ContentFiltering Unknown Multicast Packets Setting Up Static Multicast Groups V2.0, April GS748T Smart Switch Specifications Appendix a Specifications and Default ValuesTable A-3. Port Characteristics GS748T Smart Switch Features and DefaultsTable A-8. Other Features Smart Wizard Enabled Statistics Per port Appendix B Virtual Local Area Networks VLANs Example Ieee 802.1Q VLANsPort-based VLANs Port-based Vlan Example ConfigurationResults of this Configuration Category 5 Cable Appendix C Network CablingFast Ethernet Cable Guidelines Twisted Pair Cables Category 5 Cable SpecificationsFigure C-1Straight-Through Twisted-Pair Cable Patch Panels and CablesCabling Using 1000BASE-T Gigabit Ethernet over Category 5 CableReturn Loss Near End Cross Talk NextLength Patch Cables RJ-45 Plug and RJ-45 ConnectorsConclusion V2.0, April