MultiLink Trunks | Nortel Networks 1000BASE-LX, 1000BASE-SX manual

70 Chapter 2 Network configuration

VLAN configuration rules

VLANs operate according to specific configuration rules. When creating VLANs, consider the following rules that determine how the configured VLAN reacts in any network topology:

•All ports that are involved in port mirroring must have memberships in the same VLANs. If a port is configured for port mirroring, the port’s VLAN membership cannot be changed.

•If a port is a trunk group member, all trunk members are added or deleted from the VLAN.

•All ports involved in trunking and port mirroring must have the same VLAN configuration. If a port is on a trunk with a mirroring port, the VLAN configuration cannot be changed.

•Auto PVID can be activated by creating a VLAN and enabling Auto PVID for it.

For more information about configuring VLANs, see “VLAN Configuration Menu screen” on page 120.

See also Appendix C, “Quick configuration for MultiLink Trunking,” on page 193 for configuration flowcharts that can help you use this feature.

MultiLink Trunks

MultiLink Trunks allow you to group from two to four switch ports together to form a link to another switch or server, thus increasing aggregate throughput of the interconnection between the devices (up to 800 Mb/s in full-duplex mode).

You can configure up to six MultiLink Trunks. The trunk members can only reside on a single unit. MultiLink Trunking software detects misconfigured (or broken) trunk links and redirects traffic on the misconfigured or broken trunk link to other trunk members within that trunk.

You can use the Trunk Configuration screen to create switch-to-switch and switch-to-server MultiLink Trunk links (Figure 27 and Figure 28).

Figure 27 shows two trunks (T1 and T2) connecting Switch S1 to switches S2 and S3.

209418-A

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Nortel Networks 1000BASE-LX, 1000BASE-SX, 1000ASE-XD, 1000BASE-ZX manual MultiLink Trunks, Vlan configuration rules

Contents

Using the BayStack 420 10/100/1000 Switch Restricted rights legend Copyright 2001 Nortel NetworksTrademarks Statement of conditions Taiwan Requirements Using the BayStack 420 10/100/1000 SwitchJapan/Nippon Requirements Only Canada Requirements Only Nortel Networks Inc. software license agreement Using the BayStack 420 10/100/1000 Switch 209418-A Contents Chapter Network configuration Contents Chapter Using the console interface Chapter Troubleshooting Appendix B Installing a Gigabit Interface Converter Gbic Contents 209418-A Configuring power workgroups and a shared media hub Using the BayStack 420 10/100 Ethernet Switch Choosing the MultiLink Trunk Configuration Menu screen Figures Figures 209418-A Tables Tables Preface Before you begin Text conventions Italic text Related publications How to get help Technical Solutions Center Telephone Preface 209418-A BayStack 420 Switch Physical description Console port Components on the BayStack 420 Switch front panelFront panel Description Port connectors Gigabit Interface Converter Gbic BayStack 420 Switch LED display panel LED display panel BayStack 420 Switch BayStack 420 Switch LED descriptions Label Type Color State Meaning Back panel Cascade Up and Down connectorsComponents on the BayStack 420 Switch back panel Cooling fans International power cord specifications AC power receptacleCountry/Plug description Specifications Typical plug Vorsicht Bitte sofort lesen Advertencia Sírvase leer inmediatamente Features Virtual Local Area Networks VLANs BayStack 420 Switch security feature Security BayStack 420 Switch RADIUS-based network security MAC address-based security Configuration parameters storage Switch software image storageFlash memory storage Port mirroring conversation steering MultiLink TrunkingAutosensing, autonegotiation, and autopolarity RFCs Standards Snmp MIB support Snmp MIB supportApplication Standard MIBs Proprietary MIBs Snmp trap support BootP automatic IP configuration/MAC addressTrap name Configurable Sent when RFC 1215 industry standard Support Snmp traps Configuration and switch management BayStack 420 Switch Network configuration examples Desktop switch application Segment switch application Network configuration BayStack 420 Switch used as a segment switch High-density switched workgroup application BayStack 420 Switch stack operation Unit Select switch Base unit Initial installationStack MAC address Stack up configurations Stack configurationsRemoving a unit from the stack Stack down configurations Stack up configuration description Stack down configuration example Stack down configuration description Ieee 802.1Q Vlan workgroups Ieee 802.1Q tagging Port-based Vlan example Network configuration Default Vlan settings Port-based Vlan assignment 802.1Q tag assignment VLANs spanning multiple switches VLANs spanning multiple 802.1Q tagged switches Vlans spanning multiple untagged switches VLANs spanning multiple untagged switches Possible problems with VLANs and Spanning Tree Protocol Shared servers Multiple VLANs sharing resources Vlan broadcast domains within the switch Default Vlan Configuration screen example Vlan Configuration screen example Default Vlan Port Configuration screen example Vlan Port Configuration screen example Vlan workgroup summary Vlan configuration spanning multiple switches Vlan configuration rules MultiLink Trunks Switch-to-switch trunk configuration example Client/server configuration using MultiLink Trunks Switch-to-server trunk configuration example Trunk configuration screen examples Client/server configuration example Trunk configuration screen for Switch S1 MultiLink Trunk Configuration Menu screen opens Figure MultiLink Trunk Configuration screen for Switch S1 Trunk configuration screen for Switch S2 Shows the MultiLink Trunk Configuration screen for Switch S2 Trunk Configuration screen for Switch S3 Shows the MultiLink Trunk Configuration screen for Switch S3 Trunk Configuration screen for Switch S4 Shows the MultiLink Trunk Configuration screen for Switch S4 Before you configure trunks Spanning tree considerations for MultiLink Trunks Path Cost arbitration example Example 1 correctly configured trunk Example 2 detecting a misconfigured port Additional tips about the MultiLink Trunking feature Port mirroring Yes Chapter Using the console interface Accessing the CI menus and screens Using the console interface Using the CI menus and screensNavigating the CI menus and screens Screen fields and descriptions Map of console interface screens Main menu Describes the CI main menu options Console interface main menu options Configuration File Option Description Switch ConfigurationConfiguration Reset Settings Option Description Reset to DefaultLogout IP Configuration/Setup screen Describes the IP Configuration/Setup screen fields IP Configuration/Setup screen fields Field Description In-Band Subnet Choosing a BootP request modeDefault Gateway Mask BootP When Needed BootP Disabled Snmp Configuration screen fields Snmp Configuration screenDescribes the Snmp Configuration screen fields Field Description Read-Only Field Description Read-Write System Characteristics screenAuthentication Trap Trap #1 IP Address1 Describes the System Characteristics screen fields System Characteristics screen fields Power Status Field Description Reset CountLast Reset Type SysServices Switch Configuration Menu screen Describes the Switch Configuration Menu options Switch Configuration Menu options MAC Address Table screen Option Description Clear All Port Statistics Field Description Aging Time Describes the MAC Address Table screen fieldsMAC Address Table screen fields Find an Address MAC Address Security Configuration Menu screen MAC Address Security Configuration Menu options Field Description MAC Address Security MAC Address Security Configuration screen fieldsSNMP-Locked Partition Time Field Description Partition Port on IntrusionDetected DA Filtering on Intrusion Field Description Clear by Ports MAC Address Security Port Configuration screenCurrent Learning Mode Learn by Ports MAC Security Port Configuration screen 1 MAC Security Port Configuration screen fields Describes the MAC Security Port Configuration screen fieldsMAC Address Security Port Lists screens MAC Address Security Port Lists screens MAC Address Security Port Lists screen fields Port list syntaxDescribes the MAC Address Security Port Lists screen fields Field Entry Port List Description Accelerator keys for repetitive tasks Adding a new port to an existing port number list Removing a port from an existing port number list MAC Address Security Table screens MAC Address Security Table screens Field Description Find an Address Describes the MAC Address Security Table screen fieldsMAC Address Security Table screen fields Allowed Source Vlan Configuration Menu screen Field Description Option Description Vlan Configuration Describes the Vlan Configuration Menu optionsVlan Configuration Menu options 122. This screen allows you to set up Vlan workgroups Vlan Configuration screen Field Description Create Vlan Describes the Vlan Configuration screen fieldsVlan Configuration screen fields Delete Vlan User-Defined PID Vlan NameManagement Vlan Vlan State Vlan Port Configuration screen Field Description Unit Describes the Vlan Port Configuration screen fieldsVlan Port Configuration screen fields Filter Untagged Frames Tagging Vlan Display by Port screenAuto Pvid Vlan Display by Port screen fields Describes the Vlan Display by Port screen fieldsVLANs Port Configuration screen Status Describes the Port Configuration screen fieldsPort Configuration screen fields Link Autonegotiation High Speed Flow Control Configuration screenField Description LnkTrap Speed/Duplex1 High Speed Flow Control Configuration screen fields Flow Control Symmetric mode Choosing a high speed flow control modeMultiLink Trunk Configuration Menu screen Asymmetric mode MultiLink Trunk Configuration Menu screen 209418-A Describes the MultiLink Trunk Configuration Menu options MultiLink Trunk Configuration screenMultiLink Trunk Configuration Menu options Field Description Trunk Describes the MultiLink Trunk Configuration screen fieldsMultiLink Trunk Configuration screen fields Trunk Members Field Description STP Learning Trunk ModeMultiLink Trunk Utilization screen Trunk Status MultiLink Trunk Utilization screen 1 Describes the MultiLink Trunk Utilization screen fields Port Mirroring Configuration screenMultiLink Trunk Utilization screen fields Port Mirroring Configuration screen fields Describes the Port Mirroring Configuration screen fieldsField Description Monitoring Mode Field Description Monitor Unit/Port Port Statistics screenMonitoring modes Field Description Port-based Describes the Port Statistics screen fields Port Statistics screen Port Statistics screen fields Using the console interface Port Statistics screen fields System Log screen Pause Frames Port 25 only Display Messages Describes the System Log screen fieldsSystem Log screen fields From Complete? Console/Comm Port Configuration screenField Description Display configuration Clear Messages From Describes the Console/Comm Port Configuration screen fields Console/Comm Port Configuration screen fields Console Switch Password Type Switch Password Password TypeTelnet Switch Field Description Console Stack Default Value secure Range Stack Password Field Description Console Read-Only Server Primary Radius ServerSecondary Radius Radius UPD Port Renumber Stack Units screen Renumber Stack Units screen Describes the Renumber Stack Units screen fields Hardware Unit Information screenRenumber Stack Units screen fields Spanning Tree Configuration Menu screen Hardware Unit Information screen Option Description Spanning Tree Port Configuration Describes the Spanning Tree Configuration Menu optionsSpanning Tree Configuration Menu options Spanning Tree Switch Settings Spanning Tree Port Configuration screen Spanning Tree Port Configuration screen 1 209418-A Spanning Tree Port Configuration screen 2 Spanning Tree Port Configuration screen fields Priority Field Description ParticipationPath Cost Spanning Tree Switch Settings screen Describes the Spanning Tree Switch Settings parameters Spanning Tree Switch Settings parameters Bridge Hello Parameter Description Forward DelayDelay Bridge Telnet Configuration screen Telnet Configuration screen 209418-A Describes the Telnet Configuration screen fields Telnet Configuration screen fields Software Download screen Field Description Allowed Source Using the console interface Software Download screen fields Diagnostics FilenameDescribes the Software Download screen fields Field Description BayStack Field Description Tftp Server IP Configuration File Download/Upload screenLED Indications during the download process Start Tftp Load Configuration File Download/Upload screen 209418-A Configuration File Download/Upload screen fields Requirements Parameters not saved to the configuration fileThese parameters are not saved Used in this screen See Chapter Troubleshooting Interpreting the LEDs Troubleshooting LED display panel Diagnosing and correcting problems Troubleshooting BayStack 420 Switch LED descriptions Symptom Probable cause Corrective action Normal power-up sequenceCorrective actions Port connection problems Autonegotiation modes Port interface Electrical Environmental specificationsEnvironmental Electrical parameters Performance specifications Physical dimensionsLists physical dimensions for the BayStack 420 Switch Network protocol and standards compatibility Safety agency certificationAppendix a Technical specifications Electromagnetic emissions BayStack 420 Switch meets the EN50082-11997 standard Electromagnetic immunity Appendix B Installing a Gigabit Interface Converter Gbic Product description Appendix B Installing a Gigabit Interface Converter Gbic Gbic labeling Gbic specifications are listed in Table Standards, connectors, cabling, and distanceGbic specifications Gbic Models Laser Transmitter Characteristics Model 1000BASE-SX Gbic specificationsType Specifications Receiver Characteristics Model 1000BASE-LX Gbic specifications Model 1000ASE-XD Gbic specifications 1000BASE-XD Model 1000BASE-ZX Gbic specifications 1000BASE-ZX Handling, safety, and environmental guidelines Installing a Gbic Installing a Gbic Appendix C Quick configuration for MultiLink Trunking Appendix C Quick configuration for MultiLink Trunking Configuring MultiLink Trunks RJ-45 10BASE-T/100BASE-TX port connectors RJ-45 8-pin modular port connector Pin Signal Description Appendix D Connectors and pin assignmentsRJ-45 port connector pin assignments MDI and MDI-X devices MDI-X to MDI cable connections MDI-X to MDI cable connections DB-9 RS-232-D Console/Comm Port connector MDI-X to MDI-X cable connections Lists the DB-9 Console port connector pin assignments DB-9 Console port connector pin assignments Appendix D Connectors and pin assignments 209418-A Factory default settings Field Default setting Appears in this CI screen Appendix E Default settings Factory default settings Menu screen on Appendix E Default settings Port Configuration screen on Port Mirroring Configuration screen Telnet Configuration screen on Appendix E Default settings 209418-A Appendix F Sample BootP configuration file Using the BayStack 420 10/100 Switch Appendix F Sample BootP configuration file Index Index Index Index Index