189, 190, ATM-Layer Statistics 193, 201, 202, 210, 211 | 3Com 9000

Display Call-Proceeding Enable Value			177
Update Call-Proceeding Enable Value			178
Reset Signaling Configuration	179
Signaling Timers 180
Display Protocol Timer Resolution		180
Update Protocol Timer Resolution		182
Display UNI Signaling Timers	183

Display QSAAL Signaling Timers and Protocol Configuration 185

8VIEWING STATISTICS

	Physical Layer Statistics	189
	Display Physical Layer Statistics				190
	Reset Physical Layer Statistics				192
	ATM-Layer Statistics	193
	Display Total Calls in Switch			193
	Display Counters Per Port			195
	Display Counters Per VPI/VCI				196
	Reset Counters Per Port		197
	Reset Counters Per VPI/VCI			198
	AAL5-Layer Statistics	199
	Display AAL-Layer Statistics			199
	Reset AAL-Layer Statistics			201
	AAL5 Control Frame Port Statistics				202
	Display Control Frame Port Statistics					202
	Reset Control Frame Port Statistics 204
	Signaling Protocol Statistics		205
	Display Signaling Protocol Statistics					205
	Reset Signaling Counters			207

9 MANAGING LAN EMULATION
	LAN Emulation Setups 210
	LAN Emulation Services Setup			210
	Display LAN Emulation Services Status					211
	Enable LAN Emulation Services				212
	Disable LAN Emulation Services				213
	Display LECS Status	214

Image 8

3Com 9000 manual 189, 190, ATM-Layer Statistics 193, 198 AAL5-Layer Statistics 199, 201, 202, 210, 211, 212, 213, 214

Contents

CoreBuilder ATM Enterprise Switch Management Guide 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Management Capabilities Starting Up LMA Access Level Logging Logging Out Reset Switch Set Management Configuration to Factory DefaultsReset All 116 Update Auto-discovery status 117 122 Update Ilmi Channel Polling Interval 123103 Display Software Versions 104 105 134 Get ATM Addresses at Port 135136 Network Prefix Display Network Prefix 148 189 190192 ATM-Layer Statistics 193 198 AAL5-Layer Statistics 199 Update Startup Delay 223 Lane Version of Switch 224 218222 229 289 Update Elan Response Policy 291 Reset LES Configurations 298252 Display Elan MAC Addresses 254 255 Add Elan MAC Address 256 Display Elan ATM Addresses 257 Update LEC Elan Join Privilege for Current Session Configuring Pnni Nodes 333 Get Number of Nodes 334306 Display LAN Emulation Statistics 308 344 Set Default ATM Address 345 343346 Get Peer Group ID 358 389 394407 Display Ptse Node Information 412 414 Display Summary Address Table 416 ATM Switch Fabric Module Specifications Physical Menu Index Technical Support About this Guide Conventions List conventions that are used throughout this guideText Conventions Icon Description Conventions Parameter Format or Range Command ActionsCommand Result Key Section Description Explains the command descriptionsCommand Description Sections CoreBuilder 9000 Documentation Overview Paper Documents Module Quick Start Guides or Getting Started Guides Documents on CD-ROM An ATM network Year Compliance About this Guide ATM Switch Fabric Module The ATM Interface Module CoreBuilder ATM Enterprise Switch CharacteristicsCoreBuilder 9000 ATM Enterprise Switch has two components ATM Interfaces Module Type No. of Ports Rate Mbps Card Type 3Com Part Number Mechanisms for Preventing Congestion Preventing congestion Handling congestion Mechanisms for Handling Congestion Classical IP Clip ATMVirtual Networks Call Admission CLP-based Cell Discard Key Features Software Release Supported StandardsProtocols Overview Starting UP Handling Précautions de Sécurité Poignées d’insertion/d’éjection sont ouvertes Switch Fabric ATMManipulation Vorkehrungen beim Umgang mit dem Modul Installation CoreBuilder 9000 Enterprise Switch CoreBuilder Switch IntegratedFast Setup Integrated Fast Setup Procedure Sections Integrated Fast Setup Procedure Navigation AidsSetup Section Description Sections Starting Up ManagementCapabilities Access Levels Access Level Privileges LMA Main Menu LMA Menu System LMA Menu Structure Entering the Menu Sequence At the Platform Configuration Menu prompt, enterAt the Switch Setup Menu prompt, enter Entering the Command Parameters Password in a format of up to eight alphanumeric charactersPassword again exactly as before Command Results Menu Navigation Functions Editing AidsTo go Type or Press To perform this task Type or Press Automatic Logout Configuring the Platform Update Admin-access Password Set Password to Factory Default Read-access password is updated Example Write-access password is updated Before you enter the new password Admin-access password is updated Enter y to confirm. The following message appears Passwords are reset to their factory valuesEnter 1 1 1 Following prompt is displayed Setting Up for Following message is displayed Current IP address is displayed MNG Management setup SIP IP SetupNext reboot SIP Set IP Address Current NMS IP address is displayed NMS address is updated to NMS NMS SetupExample Enter 1 1 SNS Set NMS Address Current default gateway IP address is displayed Address found in the local IP subnetwork GWY Default Gateway Setup SGW Set Default GatewayDefault Gateway address was Successfully set for the next reboot Current IP subnet mask configuration is displayed Address MSK Subnet Mask Setup Set for the next rebootSSM Set Subnet Mask Subnet Mask address was successfully Current read community string is displayed Enterprise SwitchCommunity String Update Read Update the Read Community String of the CoreBuilder 9000 ATM ATM Enterprise Switch Current write community string is displayed Update Write Current Ethernet Type configuration is displayed Eth Type was successfully set for ETH Ethernet Type SetupSET Set Ethernet Type Enter 1 1 2 Following prompt is displayed RebootManagement Configuration is set to the factory defaults Setting the Port Network Connection Type Command Actions UNI Port 1 7.1.2 7.1.3 7.1.4 7.2.1 7.2.2 7.2.3 Network connection type for port 3.1.2 is updated to UNI Enter y to confirm. The following message is displayed Enter 1 1 3 Following prompt is displayed NNI configuration parameters are reset to UNI for all portsUNI for all ports, and 7 for maximum number of hops Resetting All CoreBuilder 9000 ATM Enterprise SwitchParameters Enter 1 2 Following messages are displayed Parameters Enter 1 Following message is displayed Download Status Command Actions DownloadingSystem Software Display Software Download Messages Message Meaning and Action Download procedure Enter 1 3 Following prompts are displayed Load Mode Description Load Modes Configuration is uploaded to the host Host Enter 1 3 Following message is displayed Module Status Managing SwitchFabric Modules Name Description Switch Fabric Module ParametersSwitch Fabric Module Parameters Switch is rebooted and the following messages are displayed Enter 1 4 Following prompt is displayed Enter 1 4 3 Following prompt is displayed Reset Standby Switch Reset the standby switch fabric moduleFabric Module Command Actions Mode Command Actions Direct access sequence 1 4 3 3 Configuring Interface ModulesDisplay Interface Module Information Interface Module Slot Occupancy Parameters Example for the 16-slot chassis and 7-slot chassisSlot ID Parameters Parameter Description Interface Card Parameters Interface Parameters OC3-SC Enter 1 5 3 5.1.1 Following messages are displayed Selected ports are set and saved Clock operational mode of port 1.1.2 is set to loop timing Enter 1 5 4 1.1.2 Following message is displayed Loop mode of port 1.1.2 is set to Loop back Enter 1 5 5 1.1.2 Following messages are displayed RST Reset Interface Card Interface card was resetEnter 1 5 6 Following prompt is displayed IFC Interface Cards Logging Out and Rebooting Enter System is logged out Reboot Reboot the system Command Actions Parameter Format or Range Confirm rebootReboots the ATM Enterprise Switch Enter 1 Following prompt is displayed Direct access sequence 1 Software Versions ATM FeaturesDisplay ATM Features Latest software version numbers Display Lecs ATM Address Update Lecs ATM Address SLE LE Setup LCS Lecs SetupSLA Set Active Lecs ATM Addr Active Lecs addraddress Setting Up Switch Clock SourceGet Clock Source Status Source Cannot be used as an external clock source port SP2 Set External Clock Source Internal Command Actions Enter 1 8 Following prompt is displayed Ilmi Setup IME Ilmi Setup VER Ilmi Version SetupGET Get Ilmi Version Ilmi version is 3.0/3.1/4.0 Ilmi version of port 3.1.2 is updated to Ilmi version is reconfiguredExample Enter SET Set & Save Ilmi Version Enter 1 1 8 2 1 Auto-configuration status of port 3.1.2 is enabled AUD Auto-Discovery Setup SET Set & Save Auto-Discovery MIB Ilmi MIB View Setup Lecs via Ilmi is ENABLED/DISABLEDGET Get Lecs via Ilmi ON/OFF Status LECS-via-ILMI status of port 3.1.2 is enabled Enter 1 1 8 4 1 8 4 VPI/VCI = 0/16 is periodically polled for connectivity Enter 1 1 8 4 4 3.1.2 Addresses at Port ATM Addresses PortDisplay User Enter the menu sequence 3 CON Connections Enter 3 1 1 UME Parameters Describes the UME parameters displayed by the commandUME Parameters CON Connections ADD Get ATM AddressesSTC Get Static and NNI Addresses At Port Describes the parameters displayed by the command Parameters Port Command Actions Parameters Enter 3 4 2 1 C Setup of Connections and ATM STP Static ATM Addresses SetupAddresses ADD Add ATM Address Port DEL Delete ATM AddressATM address member n was deleted from Enter 3 4 2 4 Enter 3 4 2 Following prompt is displayed Prefix Network PrefixDisplay Network Managing Network Interfaces Configuring Virtual Channels Signaling Setup Signaling Timers Configuring Virtual Channels RTG Routing CLL Calls Example Display all SVC Calls for an ATM address member Example Display Info for a Specific SVC Call With two additional destinations Example Display all PVC Calls for a PortTwo additional destinations Call Parameters Shows the call parameters displayed by the commandCall Parameters Display Port Connections Example Display all Connections at a Port Port SVC Connection Parameters Example Display Info for a Connection at a PortPort SVC Connection Parameters PRT ATM ports Port Static Connection Parameters Port Static Connection Parameters Connections Command Actions Create Permanent Virtual Channel PVC Enter 3 4 1 Following information is displayed Create Permanent Virtual Channel PVC Direct access sequence 3 4 1 2 parameters Full PVC Call Parameters Enter 3 4 1 3 p2p 5.1.1 0 37 5.1.2 0 You cannot add an additional PVC destination to a P2P PVC You cannot release SVCs with this menu Parameter Example Enter 3 4 PVC PVCs Setup GEP Display PVCs All inactive PVCs are deleted from the flash memory Enter y to confirm, n to cancel Following message appearsFollowing prompt appears Connections of Port Command Actions All PVCs of the specific port are deleted NNI Hops NNI Hops SetupDisplay Maximum Maximum NNI Hops parameter is updated to Signaling Setup GET Get VPI/VCI range SIG Signaling SetupVCC VPI/VCI range setup Following information is displayed for an OC-3c port Following information is displayed for an OC-12c port Information, see Display VPI/VCI Range on Maximum VPI for port 3.1.2 is updated to Protocol Profile Enter 1 1 4 5 Enter 1 1 4 5 2 3.1.2 Following information is displayed Protocol Version Parameters Protocol Version Parameters Enter 1 1 4 5 4 3.1.2 Display Call-Proceeding Enable Value Display the value of the call-proceeding enable value Enable Value Command Actions Enter 1 1 Following message appears Enter Y to confirm, N to cancel Enter 1 1 4 Following prompt appears Response is overdue Protocol timersHalf. For more information, see Timer Resolution on page 98 Enter 1 1 4 1 Timer resolution is updated to 250 msec and saved to flash RES Timer Resolution setupSET Set Timer Resolution Timer resolution was successfully set Displayed in seconds Parameter Format or Range Port number Slot.group.port4 2 parameters Enter 1 1 4 2 Sscop Timers Shows the Sscop Timers displayed by the commandSscop Timers QSA Get Signaling Qsaal Sscop Configuration Parameters Sscop Configuration Parameters Enter 1 1 4 4 Configuring Virtual Channels Physical Layer Statistics Enter 4 1 1 Physical Layer Statistics Statistic Statistics Command Actions Physical statistics are reset for port Reset Counters Per Port Reset Counters Per VPI/VCI ATM-Layer Statistics Enter 4 2 Following information is displayed Example Enter 4 2 Following information is displayed Enter 4 2 3 1.1.1 3 ATM Counters for the specified port are reset to RPR Reset counters per portReset ATM counters completed ATM ATM layer Counters are reset Perform menu item 3CON\2RTG\1CLL to You can display the following AAL5-layer statistics Display AAL-Layer Statistics Reset AAL-Layer StatisticsAAL5-Layer Statistics Enter 4 3 Following information is displayed SAR Counters Enter 4 3 Following message is displayed AAL5 Control Frame Port Statistics You can display the following AAL5 control statistics Enter 4 4 1 Port Statistics Command Actions AAL5-layer control statistics are reset for port Signaling Protocol Statistics You can display the following signaling statistics Enter 4 5 1 Counters Command Actions Signaling statistics are reset for port Viewing Statistics Learp Policy Configuration LEC Operations Managing LAN Emulation Services Setup LAN Emulation Status Command Actions 5 1 LE service status will be Disabled on the next reboot Direct access sequence 1 1 5 2 Lecs service status is set for the next reboot Lecs is disabled LAN Emulation Redundancy Setup Enter 1 1 5 3 SYS Platform config Lecs is entered into the LECS-order databaseLOL Lecs ordered list AOL Add to Lecs ordered list Redundant Lecs deleted Lecs with index 2 is removed from the LECS-order databaseDOL Del from Lecs ordered list LES Redundancy Parameters LES Redundancy Parameters Redundant Lane Services on page 137 in the Operations Guide RDN LE Service redundancy setupLRM Change LE Service Redundancy Mode LRD Set LE Service redundancy Startup delayStartup Delay Changed 600 Get Switch Lane Version Command ActionsLane Version Not to a specific Elan Parameter Format or Range Lane version Lane version of the switch is changedThat join after the change Configuration Configuration Command ActionsMpoa Devices Display Current MPS Mpoa Server Configuration Parameters Describes the Mpoa Server configuration parametersMpoa Server Configuration Parameters Variable Name Description Enter 2 5 1 2 Lifetime Command Actions Set Keep-AliveSets the MPS-p2 keep-alive lifetime parameter Layer Protocols Command Actions Set Internetwork Sets the MPS-p3 protocols parameterParameter Format or Range Internetwork-layer Protocols MPA Mpoa Devices Configuration MPS Mpoa Server ConfigurationLEM LAN Emulation MP4 Set initial retry time Maximum Command Actions Set Retry Time Sets the MPS-p5 retry time maximum parameterMP5 Set retry time maximum 10 300 seconds Set Give Up Time Sets the MPS-p6 give-up time parameter Time Command Actions MP7 Set default holding time Enter 2 5 2 Following information is displayed Mpoa Client Configuration Parameters Mpoa Client Configuration ParametersDescribes the Mpoa Client configuration parameters Frame Count Command Actions MPC Mpoa Client Configuration Frame Time Command Actions Flow detection protocols parameter is set Protocols Command ActionsParameter Format or Range Flow detection protocols Command Result Set Retry Time Sets the MPC-p5 retry time maximum parameter 30 1200 seconds Set Hold Down Time Sets the MPS-p6 hold down time parameterMP6 Set hold down time You can configure the resident Lecs address as follows Update Resident Lecs AddressLecs Address Display Resident Lecs Address Address Command Actions Bytes. The update takes place immediately Resident Lecs address is updatedLCS LE Config Service LSP Set resident Lecs addr Command Actions Enter 2 1 Search policy of the resident Lecs is displayed Lecs Elan Database Operations Elan LES Parameters Elan LES ParametersDescribes the Elan LES parameters Database Command Actions LCS LE Configuration ServiceLNT Lecs network topology LEP Display Elan type & params Database that you can update Elan Parameters in Lecs DatabaseDescribes the Elan parameters in the Lecs database Elan Parameters in Lecs Database Enter 2 1 5 3 elan6914 1 MAD Display all MAC addresses Addresses Command ActionsMAC MAC Addresses Info Delete Elan MAC Delete a MAC address inserted from an Elan Specified MAC address is deleted from the ElanMAC MAC Address Info DEL Delete MAC Address Console responds with the confirmation ATM ATM Address Info AAD Display all ATM addresses ATM address was deleted for this elan Specified ATM address is deleted from the ElanATM ATM Addresses Info System responds with the confirmation ANE Add new Elan record New elan was added Enter 2 1 5 Elan record was deleted Confirmation message is displayedDEL Delete Elan recor d Segment id has been updated You cannot assign a segment ID to a non-token ring ElanSegment ID is added to the Lecs database SEG Edit segment id C23, for Signaling Statistics Parameters Describes the signaling statistics parametersLecs Statistics Parameters Describes the Lecs statistics parameters Enter 2 1 Lecs database statistics are displayed Enter 2 1 Following prompt is displayed Enter 2 1 8 Following message is displayed Display Lecs Maximum Connection NumberShows how many LECs the Lecs database may contain Update Lecs Maximum Connection Number Sets the number of LECs the Lecs database may containNumber of Lecs Connections LAN Emulation Redundancy RDN LE Service redundancy ALS Add redundant LES toElan Redundant LES successfully added Enter 2 1 5 9 2 elan739 FEP Force Elan to Primary Enter 2 1 5 9 3 elan739 Display Redundant ELANs General Information Display general information about redundant ELANs Redundant ELANs General Parameters Redundant ELANs General ParametersDescribes the ELANs general parameters Display Redundant ELANs Specific Information Display specific information about Redundant ELANs Redundant ELANs Specific Parameters Redundant ELANs Specific ParametersDescribes the ELANs specific parameters LES General Command Actions Information Display general information on a redundant LESRedundant LES General Parameters Describes the redundant LES general parameters LES Specific Information Command Actions Enter 2 1 Following information is displayed LES You can configure the LES address, as follows Update Elan LES-BUS AddressDisplay LES-BUS Addresses Display LES-BUS Enter 2 2 Following information is displayed Enter 2 2 3 1 1 2 c0.da.60 .49 Direct access sequence 2 2 Enter 2 2 Following information is displayed Elan Parameters for Resident LESs Describes the Elan parameters for resident LESsElan #4 is of Token Ring type Elan Parameters for Resident LESs Database Parameters of the Elan with ID 14 are updated Describes the Elan parameters that can be updatedElan Parameters for a LES Elan Parameters for a LES Learp Policy Configuration Display Elan Response Policy Elan Response Policies Elan Response PoliciesDescribes the Elan response policies Enter 2 2 Following messages are displayed Possible Learp policies Learp Verification Policies Describes the Learp verification policiesLearp policies Learp Verification Policies Enter 2 2 3 1 5 2 Managing LAN Emulation Example Enter 2 2 Learp Policies for Route DescriptorDescribes the Learp policies for the route descriptor Learp Policies for Route Descriptor Enter 2 2 3 1 7 2 Response policy, and Learp response policies Following prompt appear Direct access sequence 2 2 3 1 Update Lane Multicast Forward Delay Update the Lane multicast forward delay parameterLane multicast forward delay time is updated Enter 2 2 Following message appears Connection Info LEC OperationsDisplay LEC LEC Connection Information Parameters LEC Connection Information ADD Clients MAC Addresses Lecid Emulation Statistics Command Actions Display LAN Enter 2 2 3 4 1 Enter 2 2 3 4 2 2 LEC Statistics Describes the LEC statistics parametersLEC Statistics NameDescription LES LE Services RES Reset General LEELN ELANs Information Statistics Enter 2 2 3 Following message is displayed DSL Destroy specific LEC Enter Y to confirm, N to cancel the reset request Enter 2 2 5 Following prompt appears Managing LAN Emulation LEC Elan Admission Security Enter 2 3 1 1 Enter 2 3 1 2 1 Security List LECs in ElanSecurity List Enter 2 3 2 1 Session Command to initialize the Elan security list Enter 2 3 2 4 1 47.0.0.0.0.0.3c.0.0.a0 Enter Y to continue, N to cancel Enter 2 3 2 6 1 CHK Perform a security check Security Status Command Actions Switch SecurityDisplay Switch SEC LE Security Configuration SWS Switch securitySST Set switch security state Security on switch now Enabled Save Security Restore Security ConfigurationSave Security Direct access sequence 2 3 LEC Elan Admission Security Configuring the Route Cache Showing Pnni Information Pnni Following command allows you to view the current Pnni state ViewingCurrent Pnni State Display PNNI/E-IISP State Configuring Pnni Nodes Enter 1 1 9 4 1 State Operations Guide for more information on E.164 196 in the Operations Guide for more information on E.164 Enter 1 1 Following message is displayed Enter 1 1 9 4 3 1 Enter 1 1 9 4 3 2 To UP Command Actions Pnni node administrative status is set to UP To Down reboot Command Actions Pnni node administrative status is set to Down PDB Purge whole Pnni Enter 1 1 9 4 3 3 1 Following message is 7displayed Node level of node 1 is set to 3 3 2 Default ATM address takes place after the next reboot 9 4 3 3 2 3 parameters Address is updated to its new value 9 4 3 3 3 3 3 3 9 4 3 3 4 3 3 4 SID Set Node ID Node ID is updated to its new value 3 3 5 Name of the node is updated to 3Com World 9 4 3 3 6 9 4 3 3 6 2 parameters Configuring and Managing Pnni 9 4 3 4 1 parameters 9 4 3 4 2 parameters 9 4 3 4 3 parameters 9 4 3 4 4 parameters 9 4 3 4 5 parameters 9 4 3 4 6 parameters Interval takes place after the next reboot 9 4 3 4 8 parameters 9 4 3 4 9 parameters 9 4 3 4 10 parameters 9 4 3 4 11 parameters 9 4 3 4 12 parameters 9 4 3 4 13 parameters Enter 1 1 9 4 3 4 14 Enter 1 1 9 4 3 4 15 Enter 1 1 9 4 3 4 16 Default Values Command Actions All the timers are set to the default values Setting Optimization Metrics Classes of Service Optimization Metrics Table Parameters Optimization Values Value Description Value of the CBR optimization parameter is updated Value of the RealTime-VBR optimization parameter is updated 9 4 3 5 2 3 parameters 9 4 3 5 2 4 parameters Value of the UBR optimization parameter is updated to All Classes to Default Command Actions Select Port for Interface Parameter Setting Parameter Format or Range Port number Slot.subslot.port Configuring and Managing Pnni 9 4 4 2 1 parameters Weight bit rate service category 9 4 4 2 3 parameters 9 4 4 2 4 parameters 9 4 4 2 5 parameters Weight unspecified bit rate service category 9 4 4 2 To Default Values Command Actions Managing Scope Mapping Scope Mapping Table ParametersScope Mapping Table Parameters Pnni Scope PnniScopeLocalNetworkPlusTwo Enter 1 1 Following information is displayed MST Modify Scope Mapping Hierarchical level of pnniScopeGlobal is updated to After the next reboot Configuring the Route Cache Get Cache State SCS Set Cache State Will continue to be used when an ADD Party route is added 11 1 9 10 4 6 After this number of calls, the cache will be refreshed 9 4 6 6 parameters Following commands allow you to display Ptse and other Pnni Showing PnniInformation Display All PTSEs Ptse Table Parameters Ptse Table Parameters Node Topology Link Section Ptse Table Parameters Node Address Section Ptse Table Parameters Statistics Section Enter 1 1 9 4 7 Information Command Actions Node Ptse Table Parameters Example Topology Link Ptse Table Parameters Example Address Table Command Actions Summary Address Table Parameters Node Address Ptse Table Parameters Example Peer Group Leader Table Parameters Peer Group Leader Table Parameters Enter 1 1 Following information is displayed Neighbor Information Command Actions Peer Group Neighbor Table Parameters Information node is up Command Actions Statistics Table Parameters Environmental SafetyPhysical Connectors Electromagnetic CompatibilityStandards Supported Interface LEDs Management Setup Menu Index 164 165180 182 171 173174 176 137 112113 114 102 101107 108 249 250251 253 266 267280 283 310 286311 314 228 229230 231 151 153156 157 199 201202 204 330 332333 334 352 353354 355 375 377378 379 398 399400 401 Appendix B Menu Index Services ServicesOnline Technical 3Com Access by Analog Modem Username anonymousHours a day, 7 days a week Country Data Rate Telephone Number 408 727 Access by Digital Modem847 262 Europe, South Africa, and Middle East Country Telephone Number Asia, Pacific Rim Country Telephone Number Fax Number Appendix C Technical Support Glossary Module Software LED Application LMA Indicator LED Software Error LEDModule Status LED Multiplexing Glossary Index Numbers Call admission control 28 call-proceeding enable value Efci site marking 28 Elan emulated LAN Learp MIB II Pnni Ptse Storage humidity 421 subnet mask configuration Displaying 66 write-access password updating Index 3Com Corporation Limited Warranty Additional Services