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TP-Link TL-SG2008 manual ¾ Port States, ¾ Port Roles

Models: TL-SG2008

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Figure 7-2 Basic MSTP diagram

¾MSTP

MSTP divides a network into several MST regions. The CST is generated between these MST regions, and multiple spanning trees can be generated in each MST region. Each spanning tree is called an instance. As well as STP, MSTP uses BPDUs to generate spanning tree. The only difference is that the BPDU for MSTP carries the MSTP configuration information on the switches.

¾Port States

In an MSTP, ports can be in the following four states:

zForwarding: In this status the port can receive/forward data, receive/send BPDU packets as well as learn MAC address.

zLearning: In this status the port can receive/send BPDU packets and learn MAC address.

zBlocking: In this status the port can only receive BPDU packets.

zDisconnected: In this status the port is not participating in the STP.

¾Port Roles

In an MSTP, the following roles exist:

zRoot Port: Indicates the port that has the lowest path cost from this bridge to the Root Bridge and forwards packets to the root.

zDesignated Port: Indicates the port that forwards packets to a downstream network segment or switch.

zMaster Port: Indicates the port that connects an MST region to the common root. The path from the master port to the common root is the shortest path between this MST region and the common root.

zAlternate Port: Indicates the port that can be a backup port of a root or master port.

zBackup Port: Indicates the port that is the backup port of a designated port.

zDisabled: Indicates the port that is not participating in the STP.

The following diagram shows the different port roles.

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TP-Link TL-SG2008 manual ¾ Port States, ¾ Port Roles

Contents

TL-SG2008 REV1.0.0 1910010984Copyright & Trademarks FCC Statement Safety Information Contents Loopback Detection 100 Rmon Package Contents About this Guide Intended ReadersConventions Overview of This GuideChapter Introduction SystemAppendix a Specifications Overview of the Switch Main FeaturesIntroduction Appearance DescriptionRear Panel ¾ LEDs Name Status IndicationConfiguration Login to the SwitchLogin Return to Contents System System InfoSystem Summary ¾ Port StatusDevice Description ¾ Port InfoStatus Displays the connection status of the port ¾ Bandwidth Utilization¾ Time Info System Time¾ Device Description Daylight Saving Time System IP System IP Following entries are displayed on this screenUser Table ¾ IP ConfigUser Management User Config Password Type in a password for users’ login¾ User Info User StatusConfig Restore Confirm Password Password Display ModeUser ID, Name, Access Level and status Operation System Tools¾ Config Backup Config BackupFirmware Upgrade System Reboot System ResetAccess Security Access ControlSSL Config IP Address & MaskMAC Address Port¾ Global Config ¾ Certificate Download¾ Key Download Key FileSSH Config Select Enable/Disable SSH function¾ Network Requirements ¾ Configuration ProcedureDownload Application Example 2 for SSH Page Page Return to Contents Port SwitchingPort Config Port Mirror GroupMirroring ModeEgress NumberIngress Port Security ¾ Port SecurityPort Isolation Port Isolation¾ Port Isolation Config Loopback Detection¾ Port Isolation List Forward Portlist Display the forwardlistOperation Mode LAGLAG Table ¾ LAG TableMember Static LAGGroup Number Lacp Config LAG will delete this LAGPort Priority ¾ Lacp ConfigAdmin Key Traffic Monitor Traffic SummaryPackets Rx Packets TxTraffic Statistics Refresh Rate¾ Statistics ReceivedMAC Address Bound MAC addressWay PortAddress Table ¾ Search OptionMAC Address Displays the MAC address learned by the switch Static Address¾ Address Table Displays the corresponding Vlan ID of the MAC addressDynamic Address ¾ Static Address TableBind ¾ Aging Config¾ Dynamic Address Table Filtering Address ¾ Create Filtering Address¾ Dhcp Working Principle Dhcp Filtering¾ Filtering Address Table 17 Network diagram of Dhcp 19 Dhcp Cheating Attack Implementation Procedure ¾ Dhcp Cheating Attack¾ Trusted Port ¾ Dhcp FilteringDhcp Filtering Vlan 802.1Q Vlan ¾ Link Types of portsVlan Config ¾ PvidGive a name to the Vlan for identification NameUntagged Ports Tagged Ports¾ Network Diagram Application Example for 802.1Q VlanUntagged TaggedStep Operation Description Required. On VLAN→802.1Q VLAN→VLAN Config page, configureRequired. On VLAN→802.1Q VLAN→VLAN Config page, create a Spanning Tree ¾ STP Elements¾ STP Generation ¾ STP Timers¾ Bpdu Comparing Principle in STP mode Step Operation Tips ：¾ Rstp Elements ¾ Mstp Elements¾ Port States ¾ Port RolesSTP Config STP ConfigForward Delay VersionHello Time Max AgePort Config STP SummaryPriority ExtPathIntPath Edge PortRegion Config Instance Config¾ Region Config Mstp Instance¾ Instance Table InstanceClear ¾ VLAN-Instance MappingPath Cost Instance Port ConfigInstance ID STP Security Port Protect¾ Root Protect ¾ TC Protect¾ Bpdu Protect ¾ Bpdu FilterTC Protect Application Example for STP Function 11 TC ProtectOn Spanning Tree→STP Config→STP Config On Spanning Tree→MSTP Instance→RegionOn Spanning Tree→MSTP Instance→Instance Operation DescriptionOn Spanning Tree→STP Config→Port Config ¾ Suggestion for Configuration Multicast ¾ Multicast Overview¾ Multicast Address ¾ Multicast Address TableIgmp Snooping Multicast IP Port¾ Igmp Snooping ¾ Igmp Snooping ProcessSnooping Config ¾ Igmp Snooping Fundamentals¾ Igmp Snooping Status Description Displays Igmp Snooping status MemberIgmp Snooping Fast LeaveMulticast Vlan ¾ Multicast Vlan Multicast→IGMP Snooping→Multicast Vlan On the Multicast→IGMP Snooping→Snooping ConfigVlan Snooping→Port Config Snooping→Snooping ConfigMulticast IP Multicast IP TableStatic Multicast IP ¾ Static Multicast IP Table Multicast Filter¾ Create Static Multicast IP-Range Port Filter¾ Port Filter Config Action ModeFilter Bound IP-Range IDPort Displays the port number of the switch Query Packet Packet StatisticsMulticast→Multicast Filter→IP-Range Multicast→Multicast Filter→Port FilterReturn to Contents ¾ QoS ¾ Priority ModeQoS ¾ Schedule Mode 802.1Q frameSP-Mode ¾ Port Priority Config DiffServPort Priority Displays the LAG number which the port belongs to¾ 802.1P Priority Config 2 802.1P/CoS MappingRequired. On QoS→DiffServ→Port Priority ¾ Priority LevelConfiguration Procedure Step Operation Description ¾ Dscp Priority ConfigDscp Priority MappingSchedule Mode ¾ Priority LevelIt ranges from 0 to Priority LevelRate Limit ¾ Rate Limit ConfigBandwidth Control Egress Ratebps Storm ControlIngress Rate bps Voice Vlan Broadcast RateBps Mulitcast Rate¾ Port Voice Vlan Mode Packet Type Processing Mode Global Config¾ Security Mode of Voice Vlan Port Mode Enter the Vlan ID of the voice VlanAging Time OUI address is aging outOUI Config Required. On VLAN→802.1Q VLAN→VLAN Config Optional. On QoS→Voice VLAN→OUI Config page, youRequired. On QoS→Voice VLAN→Port Config Required. On QoS→Voice VLAN→Global ConfigACL Config ACLACL Summary ACL CreateMAC ACL ¾ Create ACL¾ Create MAC ACL Rule IDStandard-IP ACL Extend-IP ACL¾ Create Standard-IP ACL MaskPolicy Config Policy Summary¾ Create Extend-IP ACL IP ProtocolPolicy Create Action CreateIndex Displays the index of the policy Displays the ID of the ACL contained in the policyPolicy Binding Binding Table¾ Create Action ¾ Policy Bind TablePort Binding Vlan BindingInterface Direction Displays the binding direction¾ VLAN-Bind Config Application Example for ACLEnter the ID of the Vlan you want to bind ¾ VLAN-Bind TableOn ACL→ACL Config→ACL Create page, create ACL On ACL→ACL Config→Standard-IP ACL page, select ACLLimit2 Snmp ¾ Snmp Overview¾ Snmp Management Frame ¾ Snmp Versions¾ Snmp Configuration Outline ¾ MIB IntroductionSnmp Config Snmp Config, Notification and RmonSnmp View Snmp GroupMIB Object ID View Type¾ Group Config Snmp Group Following entries are displayed on this screenSnmp User ¾ Group TableAuth Mode Auth PasswordPrivacy Mode Privacy PasswordAccess Snmp CommunityCommunity Name MIB ViewRequired. On the SNMP→SNMP Config→Global Required. On the SNMP→SNMP Config→SNMPConfig→Global Config page, enable Snmp On the SNMP→SNMP Config→SNMPNotification ¾ Create NotificationIP Address UDP PortTimeout RmonRetry ¾ Notification Table¾ History Control Table History ControlRmon Group Function ¾ Event Table Event ConfigAlarm Config Variable Sample TypeRising Threshold Rising Event131 CPU Monitor MaintenanceSystem Monitor Level Description 12.2 LogMemory Monitor Log Table Level Description Debugging¾ Log Info Time¾ Local Log Config Local LogLog Buffer Log FileBackup Log Remote Log¾ Log Host Host IPDevice Diagnostics ¾ Backup LogCable Test ¾ Cable TestNetwork Diagnostics LoopbackTracert ¾ Ping ConfigPing ¾ Tracert Config 10 Tracert Following entries are displayed on this screenAppendix a Specifications Appendix B Configuring the PCs Configure TCP/IP componentNow Appendix C Glossary Multicast Switching Remote Authentication Dial-in User Service RadiusIgmp Snooping Igmp QueryRapid Spanning Tree Protocol Rstp Simple Network Management Protocol SnmpSimple Network Time Protocol Sntp Spanning Tree Algorithm STA