Linksys SLM224G4S (G5) Spanning Tree Global STP, Spanning Tree STP Port Settings, Global Setting

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Chapter 5

Configuration Using the Web-based Utility

Topology Changes Counts  The total amount of STP state changes that have occurred.

LastTopology Change  The elapsed time since the bridge was initialized or reset, and the last topographic change occurred. The time is displayed in a day hour minute second format, for example, 2 days 5 hours 10 minutes and 4 seconds.

Spanning Tree > Global STP

The Global STP screen contains global parameters for STP on the Switch.

Spanning Tree > Global STP

Global Setting

Spanning Tree State  Select Enable or Disable from the drop-down menu to enable or disable STP on the Switch. The default is Enable.

BPDU Handling  Determines how BPDU packets are managed when STP is disabled on the port or Switch. BPDUs are used to transmit spanning tree information. The possible values are:

•Filtering  Filters BPDU packets when spanning tree is disabled on an interface.

•Flooding  Floods BPDU packets when spanning tree is disabled on an interface. This is the default value.

Path Cost Default Values  The method used to assign default path costs to STP ports. The possible values are:

•Short  Specifies a range of 1-65.535 for port path costs.

•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. This is the default value.

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.

HelloTime  Specifies the device HelloTime (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 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 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.

Choose settings for the Hello Time, Max Age, and Forward Delay parameters so that both of the following are true:

Max Age ≥ 2 × (Hello Time + 1)

2 × (Forward Delay – 1) ≥ Max Age

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.

24/48-Port 10/100 + 4-Port Gigabit Resilient Clustering Smart Switch with 2 Combo SFPs

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Contents Port or 48-Port 10/100 + About This Guide About This GuideIcon Descriptions Online ResourcesTable of Contents Snmp Gigabit Ethernet Fiber Optic Cabling Appendix B About Switch StackingAppendix C Glossary Appendix E Warranty Information Appendix D SpecificationsAppendix F Regulatory Information Appendix G Contact InformationIntroduction ChapterProduct Overview Chapter Product OverviewFront Panel Back PanelSLM248G4S Installation Chapter InstallationPre-Installation Considerations Placement OptionsRack-Mount Placement Hardware InstallationDesktop Placement Configuring Stacking Mode Uplinking the SwitchConnect port G1 on Unit 3 to port G2 on Unit Replacing a Stacked SwitchConnect port G1 on Unit 2 to port G2 on Unit Using the HyperTerminal Application Chapter Configuration Using Console InterfaceUsing telnet Login screen appears. Proceed to the Login section belowLogin How to Use the Console InterfaceSwitch Main Menu System Configuration MenuSystem Information Management SettingsUser & Password Settings IP Configuration Security SettingsFile Management Network ConfigurationStack Configuration Restore System Default SettingsReboot System System Mode Port ConfigurationPort Status HelpSetup Chapter Configuration Using Web-based UtilitySetup Summary Device InformationSetup Network Settings Setup ZoomDefault Gateway The IP address default 0.0.0.0 DNS Server The IP address of your ISP’s server thatIdentification Setup TimeLocal Time Daylight SavingPort Management Port Settings Setup Stack ManagementPort Management Sntp ServersPort Configuration Port Management Link Aggregation LAG ConfigurationPort Management Lacp Lacp screen contains fields for configuring Lacp LAGsGlobal Parameter Port PriorityVlan Management Vlan Management Port SettingsVlan Management Create Vlan Lacp Port TableJoin Vlan to Port Vlan Management Port to VlanVlan Management Vlan to Port Statistics Rmon Statistics StatisticsRmon History Statistics Rmon HistoryLog Table Rmon History TableAdd Alarm Statistics Rmon AlarmsStatistics Interface Statistics Statistics Port UtilizationStatistics Rmon Events Security Security 802.1x SettingsInterface Ethernet-likeSecurity Port Security Setting TimerWeb IP Filtering Security Management Access ListBroadcast Only Counts only Broadcast traffic Security Storm ControlSecurity Radius CoS Settings QoS CoS SettingsCoS Default CoS Settings screen is used to enable or disable CoSQoS Bandwidth QoS Queue SettingsQoS Dscp Settings Spanning Tree STP Status QoS Basic ModeSpanning Tree Global Setting Spanning Tree STP Port SettingsBridge Settings Spanning Tree Global STPMulticast Vlan Igmp SettingsMulticast Igmp Snooping Igmp GlobalMulticast Bridge Multicast Forward All Multicast Bridge MulticastSnmp Views Snmp Global ParametersUser Name Provides a user-defined local user list Snmp Group ProfileSnmp Group Membership Snmp Communities Snmp Notification Recipient Snmp Notification FilterBase Table Advanced TableAdmin User Authentication AdminUser Authentication Local User EditAdmin Dynamic Address Admin Static AddressSecure The entry is defined for locked ports Clear Table If selected, this clears the MAC Address tableQuery Admin Port MirroringAdmin Cable Test Admin Save Configuration Admin Factory Default Admin Firmware UpgradeAdmin Reboot Admin Memory Logs Admin LoggingAdmin Server Logs Logout Admin Flash LogsAppendix a About Gigabit Ethernet Fiber Optic Cabling Appendix aGigabit Ethernet Fiber Optic CablingAbout Switch Stacking Appendix B About Switch StackingAppendix B Stack Building Quick StartStack Resiliency Advanced StackingUnit IDs Unit ID AllocationMaster Election Stack Units Startup ProcessMaster Discovery User Controls Unit and Port ConfigurationStacking Examples Replacing a Failed Stack Member in a Running StackStack Master Failure and Replacement Splitting a Stack Subgroup Contains Both Master Unit and Backup Master UnitBoth Stacks Kept Running During Insertion Merging Two StacksInserting Too Many Units Stacking Cable FailureGlossary Appendix CAppendix C Glossary Glossary Mail protocol on the Internet Packet a unit of data sent over a networkAppendix C Appendix D Appendix D SpecificationsSpecifications Unit Weight SLM224G4S 1,927 kg Dimensions802.3 10BASE-T Ethernet 802.3z Gigabit EthernetLimited Warranty Warranty InformationObtaining Warranty Service Appendix ETechnical Support Warranty InformationRegulatory Information Appendix FRegulatory Information Appendix F Norsk Norwegian Miljøinformasjon for kunder i EU Appendix F Contact Information Appendix G8012510A-AI
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