3Com 3 manual Enhancing, Performance, Therefore the overall network performance

Page 84

84APPENDIX B: NETWORK CONFIGURATION EXAMPLES

Enhancing the	Figure 25 shows how you can set your network up to enhance its
Performance of Your	performance.
Network	All ports are auto-negotiating and smart auto-sensing and will therefore

	pass data across the network at the optimum available speed and duplex
	mode. Flow control will help avoid packet loss during periods of network
	congestion. A Gigabit Ethernet backbone is set up between the Switch
	4900 and each Switch in the workgroups to increase the bandwidth, and
	therefore the overall network performance.
	Figure 25 Network set up to enhance performance

Switch 4200 unit

Endstations on 10/100 Mbps connections

Production Workgroups

1000 Mbps with

aggregated linksStack of four Switch 4200 units set up

Endstations on 10/100 Mbps connections

Administrative Workgroups

1000 Mbps link blocked by Spanning Tree Protocol

100 Mbps

Servers on 1000 Mbps connections with resilient links set up

Switch 4900

1000 Mbps

Image 84

Contents SuperStack 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Using Multicast Filtering Status Monitoring and Statistics IP Addressing About this Guide Conventions List conventions that are used throughout this guideRelated DocumentationComments Pddtechpubscomments@3com.comProduct RegistrationSwitch Features Page What is Switch FeaturesManagement Software?Switch Features Overview Ports operating at 1000 Mbps only support full duplex mode For more information about multicast filtering, see UsingDuplex Flow ControlFor more information about STP and RSTP, see Using Resilience FeaturesQuality of Service For more information about Quality of Service, see UsingEvent Notification For more information about VLANs, see Setting Up Virtual Port Features Ports operating at 1000 Mbps support full duplex mode only Port Features Switch units connected using an aggregated link Aggregated Links Traffic Distribution and Link Failure on Aggregated Links 2 Gbps aggregated link between two Switch units Optimizing Bandwidth Using Multicast Filtering Relevant multicast groupUsing Multicast Filtering Query mode Snooping ModeQuery Mode Igmp v2 protocol That support IPIgmp multicast filtering works as follows Enabling Igmp Multicast LearningIgmp Multicast Filtering Using Multicast Filtering Spanning Tree Protocol STPNetwork Ieee 802.1w standard What is STP? Traffic flowing through Bridge B Port Speed Link Type Path Cost 802.1D-1998 802.1w Using Resilience Features Port costs in a network Configuration 1 Redundancy for Backbone Link Configuration 2 Redundancy through Meshed BackboneConfiguration 3 Redundancy for Cabling Error STP configurations Default Behavior Using STP on aNetwork with Multiple VLANsConfiguration that separates VLANs Using Resilience Features What is the Switch How SwitchDatabase? Database EntriesSwitch Database Entry States Databases entries can have three statesWhat is Traffic Prioritization?Available Converged network applications Used by organizations with a802.1D Priority Levels How Traffic Prioritization Works Your Switch Traffic PrioritizationHow traffic is processed to provide Quality of Service Configuring traffic prioritization for QoS on a SwitchUsing Traffic Prioritization What is RMON? Network efficiency and reduce the load on your networkThat allows you to monitor the traffic of LANs or VLANs Alarms EventsIt improves your efficiency Switch RmonLow Threshold Statistic High Threshold Recovery Period Low Threshold Statistic High Threshold Recovery Status Monitoring and Statistics Hardware Status Monitoring Example device summary web Setting UP Virtual Lans VLANs ease the movement of devices on networks VLANs provide extra securityVLANs help to control traffic Membership Creating an Ieee 802.1Q Tagged LinkTwo Vlans connected via a router Configuration Using UntaggedConfigure the VLANs ExamplesConfigure the VLANs on Switch Add endstation ports on Switch 1 to the VLANsAdd ports to the VLANs Add port 12 on Switch 1 to the VLANs Add endstation ports on Switch 2 to the VLANsAdd port 11 on Switch 2 to the VLANs Check the Vlan membership for both switchesConfiguration How Your Switch Obtains IPInformation How Automatic IPHow Automatic IP Configuration Works Automatic IP configuration feature That a Switch may change its IP address whilst in useConsiderations Configuration Rules IP AddressingGlossary IndexPage Configuration Rules Configuration Rules for Gigabit EthernetFast Ethernet configuration rules Configuration Rules for Fast Ethernet Appendix a Configuration Rules Network This chapter contains the following sectionsSegments are connected to the Switch which is positioned Simple NetworkFamily and 4900 family can be used in your network ExampleDual Speed Hub Switch Advanced Network ImprovingResilience of Your NetworkEnhancing PerformanceTherefore the overall network performance IP Addresses Simple OverviewObtaining a Registered IP Address IP AddressDotted Decimal Notation Decimal value of an octet whose bits are all 1s isNetwork Portion Subnet mask Subnet Mask Numbering Extending the Network PrefixOr leave the field blank Glossary Glossary Endstation EthernetEthernet address Fast EthernetGateway Half duplexHub Ieee 802.1DLine speed See baud Glossary Rstp See Rapid Spanning Tree Protocol STP See Spanning Tree Protocol STP Page Glossary Index NumbersIgmp multicast filtering 30 Internet Addresses 85 InterNIC Sub-networks. See subnets Switch Database

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