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EXP Computer S200 manual Configuring Local Termination

Models: S200

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LLC2 Local Termination

Configuring Local Termination

Configuring for Perform the following procedures to configure Local Termination on a Bridge node.

Local Termination

Step	Action

1	Configure the node.

2	Configure the ports.

3	Configure the route selection table.

4	Configure the LAN connection table.

5	Configure the Mnemonic Table and PVC Setup table.

6	Configure the bridge for Local Termination.
	Go to ““Configuring the Bridge” section on page 106”, for details on
	configuring the bridge table for Local Termination.

Before You Begin Connect to the node using Control Terminal Port (CTP) access. Obtain the following information:

•MAC Address of the device being spoofed.

•SAP value of the device being spoofed.

Configuring the	Follow these steps to configure bridge parameters to enable Local Termination on a
Bridge	node.

	Step			Action	Result

	1		Select Configure -> Configure		The Configure Bridge Record
			Bridge from the Main menu.		menu appears.
				Note


			Bridge must be configured for
			source routing.
			(*Bridge Type=SR).

106

Bridging

Image 110

EXP Computer S200 manual Configuring Local Termination

Contents

3Com Corporation Restricted Rights Notification for U.S. Government Users Restricted Rights LegendProprietary Material Page Functionality SolutionsOverview Multiple LANsNo Local Bridging TranslationalBridging TransparentThis Manual Topic This Notice Topic Introduction Bridging Features and CapabilitiesSwitches Bridging PrimerEthernet LAN Operation ExampleEthernet Bridge WAN application, but you can also bridge across an X.25 WANMixed LAN Bridging MAC Addressing Termination LLC2 Local TerminationLLC2 Local LT ExampleAutolearn for Local Termination Mac Address NetBIOS NameFiltering FilteringWhat Is It? Automatic Manual Spanning Tree Support Spanning Tree ProtocolDual Ethernet LANs WAN or Permanent Virtual Circuit PVC for Frame Relay Basic Remote Bridging ExamplesAcross a WAN Example of Bridges in an SVC Arrangement LAN Interface BridgeConnections SupportBridging Setting Up WAN Operation for Bridging Interface Connections Between WAN and LANSetting Up WAN Operation for Bridging Configure These parameters make up the Bridge Parameter Record Bridge ParametersParameters Maximum Number of Bridge LinksAUTO, MAN Bad Hello TimeoutStpe Control MANBridge WAN Data Priority used for Ethernet only Learn Only Period used for Ethernet onlyAging Period used for Ethernet only Bridged Protocols Bridge links as links to the networks attached to it Parameters control the characteristics of this connectionBridge Link Parameters Bridge LinkBridgeType These parameters make up the Bridge Link RecordEntry Number SR, TB, BothsrandtbMAC Address Filter Action Hop Count LimitLargest Frame Size NONE, PASS, BlockStpe Link State Netbios Name Filter ActionProtocol Filter Action Normal Link ModeNORMAL,RFC1294, Trans Virtual Ring NumberLAN Connection LAN Connection TableOver the WAN Table ParametersRout LAN Forwarder TypeROUT, BRID, Brout LAN Connection TypeAutocall Mnemonic Encapsulation TypeCodex Lcon Queue LimitOFF Billing RecordsOFF, on Traffic PriorityOverview Where bridging is done remotely across a WANLimiting Bridge Frame Sizes Transmission times for large frames become significantMaximum frame size Standard FrameSizes Max Frame Size Line Speed Range kbpsConfiguring Translational Bridging Translational Bridging Example Bridge Frame Handling Node for SRB Configuring Source Route Bridging OperationConfiguring Individual BridgeBridging LAN for a Source Route Bridging operation Connecting a Station to a Server in Source Route BridgingProcedure Located on remote LAN CCC FigureServer’s Destination MAC Address Not on LAN AAA LAN Bridge Link WAN Adapter Transmits Each are Frame Across the WAN Server Responds with Specifically Routed Test Frame Step Action Result/Description ThenForwarder Transparent Bridging for Ethernet LANsLearning Statistics LAN link WAN link Link errorForwarder Example FilteringHardware Accelerator Functions HardwareAccelerator LAN/WAN Handlers Forwarder Functions Forwarder Initialization Learn Only Period AgingForwarder Database and Spanning Tree Using Filters List, the frame is dropped Multicast LinkFrame is dropped Control menu located in the Main menuLocal MAC Address Transparent Bridge Configuration ParametersTB Forwarding Bridge Link NumberWhat is It? How Filtering is Used Bridge FilteringMAC Address Filtering Parameter ActionParameter Parameter Action ValueMAC Filtering ProcessMac Filtering Process Incoming and Outgoing Frames Example of a Frame Passing on a Bridge LinkMAC Address Filtering Examples How To Configure ExampleConfiguring the Bridge Link Record First ExampleConfiguring the MAC Address Filter Table Address Links Why it is ImportantIdentifying Address Links for MAC Addressing Filtering works Series Switch SupportMAC Wildcard Filtering Categories Configuring the MAC Address Filter TableBroadcast frames in the LAN network PASS, BLOCK, PASSLIST, Blocklist These parameters make up the MAC Address Filter TableIncoming Source Address Link Action PassOutgoing Source Address Link Action Incoming Destination Address Link ActionOutgoing Destination Address Link Action List of LinksProtocol Filtering Protocol Filter These parameters make up the Protocol Filter Table RecordProtocol OUI/IP hex value Protocol TypeProtocol SAP hex value Protocol ValueIncoming Protocol Link Action Outgoing Protocol Link ActionDsap Values Parameter Actions Transparent Bridging NetBIOS Name FilteringBroadcasts to and from the SVR* name pattern Domain With Checking NetBIOSForcing a Local FiltersNetBIOS Name Filtering Configuring NetBIOS Name FilteringHow to Configure Step ActionEntry Number 1 appears Select Configure ConfigureStep Action Result Bridge Bridge LinkBridge -NetBIOS Name Filter Configure NetBIOSNetBIOS Name Filter Table Name Filter TableAscii Typical FilteringString Type Incoming NetBIOS Name Link Action Incoming NetBIOS Name List of LinksOutgoing NetBIOS Name Link Action Outgoing NetBIOS Name List of LInksEach bridge link NetBIOS Name Filtering StatisticsNetBIOS broadcasts filtered on the link Check DetailedAll of the following are true NetBIOS Packet FormatsIBM NetBIOS Formats When to Use NetBIOS Name Filtering Either one of the following is trueSpanning Tree Configuration Stpe Control= Auto Stpe Control = Manual MenuSpanning Tree Protocol Entity Stpe TreeBridge Links Spanning Tree Protocol Entity Stpe Bridge Network Stpe Parameter Setting ConsiderationsExample of a Determining Root Links Designated Links Setting the Root Bridge Spanning TreeBridge ID equals Bridge Priority Value in hex + MAC Address Type of Network Speed Stpe Path Cost Expected Number ConsiderNature SVCsTwo Bridge Links Between B3 and B4 Spanning Tree Protocol Entity Stpe Hello Timer Spanning Tree TimersTimer Parameters Max AgeOther ConsiderationsBridge Forward Delay Timer Message Events in NetworkSpanning Tree Protocol Entity Stpe Location and forwards packets to it properly Aging TimerBridges can adjust to the change Preventing session timeouts in a Bridging application LLC2 Local TerminationBefore Local Well as network delaysTerminal session, causing After LocalImproper LT SupportedTopologies Type Name Description Proper LT configurationLLC Protocol LLC Frame Description LLC2 Frame Description Local Termination spoofs Local Termination does not spoofBridging 105 Configuring Local Termination Local TerminationStation Table Entry Number Boot Type LLC LT StationStep Local SAP WAN Parameters T1Reply TimerT2 Rx Ack Timer LLC Profile NameN3 ACK Delay Count Boot Type LLC LT WAN ParametersTi Inactivity Timer N2 Retry CountLCC LT WAN Data Priority Configuration Entry NumberTx Window Size HIGH, MEDIUM, LOWT1 Reply Timer 112 Bridging Deleting LT Configuration Records Mixed LAN Environment Limitations 27x switch, as shown in FigureMixed LAN Operation Bridge Link Parameters from Select Configure BridgeBridge Link Parameters menu CTP Main menu, to activate Bridge linkBothsrandtb System powerup Dual LAN EthernetDual Ethernet LAN RoutingSupported CmemFor Details on ParametersLAN Server Subsystem Alarms Record Configuring the LSS RecordExample of LCC Virtual Port’s MAC AddressVirtual Bridge ID ENABLE, DisableDisable Path Trace ControlBridge Statistics Statistics Menu screenStatus report Spanning Tree StatisticsStpe Status Term DescriptionAre Disabled The Stpe is disabled. If Stpe ControlState Parameter is MANDetailed Bridge Link Statistics Detailed Bridge Link Statistics FirstScreen Terms RIF Summary Bridge Link Filter SummaryLink Filter DescriptionBridging 131 Stats Descriptions Transparent Bridge Forwarding Table StatisticsStats Example Shown in FigureBridging 133 Transparent Bridge Detailed Bridge Link Statistics Terms-Transparent Bridge SecondReceived/transmitted of all types on this link FF-FF-FF-FF-FF-FFFrame Totals This is a count of the number of frames Detailed LAN Connection Statistics LAN Connection StatisticsStatistics Menu Detailed LAN Connection Statistics Second Connection and explains why the call was cleared Explains why the last call was clearedLast clear diagnostic code This is the diagnostic code SVCs. The possible states are Blank for PVCs blankBridging 139 Example of LAN shows the LAN Connection Summary Statistics Connection Summary StatisticsSAP LLC2 LT Session Summary StatisticsHeading Description Remote MAC AddrHeading LLC2 LT Detailed Session Statistics Session StatisticsField, ring number, and bridge number information Last Statistics Last time statistics were reset ResetRouting information field used in all frames transmitted Heading Description Local Station Session Summary Heading Description Remote Spoofer Session Summary Reset Statistics 148 Bridging Technical Support Access by Digital Modem Access by Analog Modem3ComFacts Automated Fax Service Country Data Rate Telephone NumberCountry Telephone Number Support from3Com Country Telephone Number Fax Number Index NumericsLAN OUI URL A-1 Index-5