3Com 3 manual Advanced Network, Improving, Resilience of Your

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Advanced Network Configuration Examples

83

Advanced Network	This section shows some network examples that illustrate how you can
Configuration	set up your network for optimum performance using some of the
Examples	features supported by your Switch.
Improving the	Figure 24 shows how you can set up your network to improve its
Resilience of Your	resilience by enabling Spanning Tree Protocol (STP). Aggregated links
Network	have also been setup from the Core Switch, this increases the bandwidth
	available for the backbone connection, and also provides extra resilience.
	Figure 24 Network set up to provide resilience

	Switch 4900 Series		Endstations on
	Switch 4900 Series	Switch 4200 unit	10/100 Mbps connections
			10/100 Mbps connections

	Aggregated link

Server on 1000 Mbps connection - link blocked by Spanning Tree Protocol

Switch 4900 Series

Server on 1000 Mbps connection - link blocked by Spanning Tree Protocol

1000 Mbps with

aggregated links100 Mbps set up

Core Switch

1000 Mbps

Stack of four Switch 4200 units

Endstations on 10/100 Mbps connections

Servers on 1000 Mbps connections with resilient links set up

Image 83

Contents SuperStack 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Using Multicast Filtering Status Monitoring and Statistics IP Addressing About this Guide List conventions that are used throughout this guide ConventionsPddtechpubscomments@3com.com RelatedDocumentation CommentsRegistration ProductSwitch Features Page Software? What isSwitch Features ManagementSwitch Features Overview Flow Control Ports operating at 1000 Mbps only support full duplex modeFor more information about multicast filtering, see Using DuplexResilience Features For more information about STP and RSTP, see UsingEvent Notification Quality of ServiceFor more information about Quality of Service, see Using 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 Relevant multicast group Using Multicast FilteringUsing Multicast Filtering Query Mode Query modeSnooping Mode Enabling Igmp Multicast Learning Igmp v2 protocolThat support IP Igmp multicast filtering works as followsIgmp Multicast Filtering Using Multicast Filtering Network Spanning TreeProtocol STP 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 3 Redundancy for Cabling Error Configuration 1 Redundancy for Backbone LinkConfiguration 2 Redundancy through Meshed Backbone STP configurations Multiple VLANs Default BehaviorUsing STP on a Network withConfiguration that separates VLANs Using Resilience Features Database Entries What is the SwitchHow Switch Database?Databases entries can have three states Switch Database Entry StatesConverged network applications Used by organizations with a What is TrafficPrioritization? Available802.1D Priority Levels How Traffic Prioritization Works Traffic Prioritization Your SwitchConfiguring traffic prioritization for QoS on a Switch How traffic is processed to provide Quality of ServiceUsing Traffic Prioritization That allows you to monitor the traffic of LANs or VLANs What is RMON?Network efficiency and reduce the load on your network It improves your efficiency AlarmsEvents Rmon SwitchLow 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 provide extra security VLANs ease the movement of devices on networksVLANs help to control traffic Creating an Ieee 802.1Q Tagged Link MembershipTwo Vlans connected via a router Examples ConfigurationUsing Untagged Configure the VLANsAdd ports to the VLANs Configure the VLANs on SwitchAdd endstation ports on Switch 1 to the VLANs Check the Vlan membership for both switches Add port 12 on Switch 1 to the VLANsAdd endstation ports on Switch 2 to the VLANs Add port 11 on Switch 2 to the VLANsConfiguration How Automatic IP How Your SwitchObtains IP InformationHow Automatic IP Configuration Works Considerations Automatic IP configuration featureThat a Switch may change its IP address whilst in use Index Configuration RulesIP Addressing GlossaryPage Configuration Rules for Gigabit Ethernet Configuration RulesFast Ethernet configuration rules Configuration Rules for Fast Ethernet Appendix a Configuration Rules This chapter contains the following sections NetworkExample Segments are connected to the Switch which is positionedSimple Network Family and 4900 family can be used in your networkDual Speed Hub Switch Network Advanced NetworkImproving Resilience of YourTherefore the overall network performance EnhancingPerformance Simple Overview IP AddressesIP Address Obtaining a Registered IP AddressNetwork Portion Dotted Decimal NotationDecimal value of an octet whose bits are all 1s is Subnet mask Extending the Network Prefix Subnet Mask NumberingOr leave the field blank Glossary Glossary Fast Ethernet EndstationEthernet Ethernet addressIeee 802.1D GatewayHalf duplex HubLine speed See baud Glossary Rstp See Rapid Spanning Tree Protocol STP See Spanning Tree Protocol STP Page Glossary Numbers IndexIgmp multicast filtering 30 Internet Addresses 85 InterNIC Sub-networks. See subnets Switch Database

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