Linksys SLM2024, SLM248P, SLM248G, SLM224P, SLM2048 Spanning Tree STP Port Settings, Bridge Settings

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Chapter 4

Configuration Using the Web-based Utility

Long  Specifies a range of 1-200,000,000 for port path costs. The default path costs assigned to an interface varies according to the selected method.

Bridge Settings

Priority  Specifies the bridge priority value. When switches or bridges are running STP, each is assigned a priority. After exchanging BPDUs, the device with the lowest priority value becomes the Root Bridge. The default value is 32768. The value must be a multiple of 4096. For example, 4096, 8192, 12288, etc. The range is 0 to 65535.

Hello Time  Specifies the device Hello Time. The Hello Time indicates the amount of time in seconds a root bridge waits between configuration messages. The default is 2 seconds. The range is 1 to 10 seconds.

Max Age  Specifies the device Maximum Age Time. The Maximum Age Time is the amount of time in seconds that a bridge waits before sending configuration messages. The default is 20 seconds. The range is 6 to 40 seconds.

Forward Delay  Specifies the device forward delay time. The Forward Delay Time indicates the amount of time in seconds a bridge remains in a listening and learning state before forwarding packets. The default is 15 seconds. The range is 4 to 30 seconds.

Click Save Settings to save the changes, or Cancel Changes to cancel the changes.

Spanning Tree > STP Port Settings

The STP Port Settings screen allows network administrators to assign STP settings to specific interfaces.

Spanning Tree > STP Port Settings

Interface  Indicates the port or LAG on which STP is enabled. Select either Port (default) or LAG, then select the interface from the drop-down menu.

Enable STP  Select this to enable STP on the port. The default is Enabled.

Port Fast  Indicates if Fast Link is enabled on the port. If Fast Link mode is enabled for a port, the Port State is automatically placed in the Forwarding state when the port link is up. Fast Link optimizes the STP protocol convergence. STP convergence can take 30-60 seconds in large networks. The possible values are Enable, Auto, and Disable. The default is Disable.

Port State  Displays the current STP state of a port. If enabled, the port state determines what forwarding action is taken on traffic. Possible port states are:

Disabled  STP is currently disabled on the port. The port forwards traffic while learning MAC addresses.

Blocking  The port is currently blocked and cannot forward traffic or learn MAC addresses.

Listening  The port is in Listening mode. The port cannot forward traffic nor can it learn MAC addresses.

Learning  The port is in Learning mode. The port cannot forward traffic, but can learn new MAC addresses.

Forwarding  The port is in Forwarding mode. The port can forward traffic and learn new MAC addresses.

Speed  Displays the speed at which the port is operating.

Path Cost  Indicates the port contribution to the root path cost. The path cost is adjusted to a higher or lower value, and is used to forward traffic when a path being rerouted. The default value is 2000000 for a 10M port, 200000 for a 100M port, and 20000 for a 1G port or a LAG.

Default Path Cost  When selected the default path cost is implemented. The default is unselected.

Priority  Priority value of the port. This value influences the port choice when a bridge has two ports connected in a loop. The range of values is 0 -240. The default is 128.

Designated Bridge ID  Displays the bridge priority and the MAC Address of the designated bridge.

Designated Port ID  Displays the selected port’s priority and interface.

Designated Cost  Displays the cost of the port participating in the STP topology. Ports with a lower cost are less likely to be blocked if STP detects loops.

Forward Transitions  Displays the number of times the port has changed from the Blocking state to Forwarding state.

Click Update to update the screen with your changes.

Click Save Settings to save the changes, or Cancel Changes to cancel the changes.

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Contents Business Series Smart Gigabit Ethernet Switch About This Guide About This GuideIcon Descriptions Online ResourcesTable of Contents Table of Contents Appendix B Glossary Appendix C Specifications Appendix D Warranty and Regulatory InformationAppendix E Contact Information Introduction Chapter IntroductionProduct Overview Chapter Product OverviewSLM2048 Back PanelSLM2024 SLM248G SLM248P SLM224G SLM224P Installation Chapter InstallationPre-Installation Considerations Placement OptionsHardware Installation Desktop PlacementRack-Mount Placement With Uplinking the SwitchChapter Configuration Using Web-based Utility SetupSetup Summary Device Information Setup Network SettingsSystem Information IdentificationIP Configuration Setup TimeLocal Time Daylight SavingPort Management Port Settings Port ConfigurationPort Management Port Management Link Aggregation LAG Configuration Port Management Lacp Port Management PoE Power SettingsGlobal Parameter Port PriorityVlan Management Vlan Management Port SettingsVlan Management Create Vlan Vlan Management Port to VlanPort The number of the port being configured Vlan Management Vlan to PortJoin Vlan to Port Statistics Interface Statistics StatisticsInterface Ethernet-likeSetting Timer Security 802.1x SettingsSecurity ParametersSecurity Port Security Security Storm Control Security IP Access ListIP Address Enter the IP address to be allowed Broadcast Only Counts only Broadcast trafficSecurity Radius CoS Settings QoS CoS SettingsCoS Default QoSQoS Queue Settings QoS Dscp SettingsQoS Basic Mode Spanning Tree Global SettingSpanning Tree STP Status Spanning Tree Global STPSpanning Tree STP Port Settings Bridge SettingsSpeed Displays the speed at which the port is operating Multicast Vlan Igmp SettingsMulticast Igmp Snooping Multicast Bridge MulticastMulticast Bridge Multicast Forward All Admin User Authentication AdminUser Authentication Local User EditAdmin Dynamic Address Admin Static AddressQuery Secure The entry is defined for locked portsAdmin Save Configuration Admin Port MirroringAdmin Reboot Admin Firmware UpgradeAdmin Factory Default Click the Reboot button, then click OK to confirmAdmin Logging Admin Memory LogsAdmin Flash Logs If you select Yes, a confirmation screen appears LogoutAppendix a About Gigabit Ethernet Fiber Optic Cabling Gigabit EthernetFiber Optic Cabling Glossary Appendix B GlossaryGlossary Mail protocol on the Internet Packet a unit of data sent over a networkAppendix B Appendix C Specifications SpecificationsSLM2024/SLM2048 Connectors for 10BASE-T Power Internal Power CertificationButtons Reset Cabling Type UTP CAT 5 or better for UL, cUL, CE mark, CB39 lb 2.9 kg Unit Weight83 lb 3.1 kg 28 lb 3.3 kgLimited Warranty Appendix D Warranty and Regulatory InformationFCC Statement Safety NoticesIndustry Canada Statement Règlement d’Industry CanadaDansk Danish Miljøinformation for kunder i EU Appendix D Norsk Norwegian Miljøinformasjon for kunder i EU Appendix D Contact Information Appendix E