EverFocus ESM316T002R user manual

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configuration messages at regular intervals. Any port that ages out STP information (provided in the last configuration message) becomes the designated port for the attached LAN. If it is a root port, a new root port is selected from among the switch ports attached to the network. (Note that references to “ports” in this section mean “interfaces,” which includes both ports and trunks.)

Minimum: The higher of 6 or [2 x (Hello Time + 1)]

Maximum: The lower of 40 or [2 x (Forward Delay - 1)]

Default: 20

Hello Time - The interval (in seconds) at which the root switch transmits a configuration message. Default: 2

Minimum: 1

Maximum: The lower of 10 or [(Max. Message Age / 2) -1]

Forward Delay - The maximum time (in seconds) this switch will wait before changing states (i.e., discarding to learning to forwarding). This delay is required because every switch must receive information about topology changes before it starts to forward frames. In addition, each port needs time to listen for conflicting information that would make it return to a discarding state; otherwise, temporary data loops might result.

Minimum: The higher of 4 or [(Max. Message Age / 2) + 1]

Maximum: 30

Default: 15

Root Priority - The priority of the switch in the Spanning Tree that this switch has accepted as the root switch.

Root MAC Address - The MAC address of the switch in the Spanning Tree that this switch has accepted as the root switch.

Root Path Cost - The path cost from the root port on this switch to the root switch.

Root Port - The number of the port on this switch that is closest to the root. This switch communicates with the root switch through this port. If there is no root port, then this switch has been accepted as the root switch of the Spanning Tree network.

Root Maximum Age - The maximum time (in seconds) this switch can wait without receiving a configuration message before attempting to reconfigure. All switch ports (except for designated ports) should receive configuration messages at regular intervals. If the root port ages out STA information (provided in the last configuration message), a new root port is selected from among the switch ports attached to the network. (References to “ports” in this section means “interfaces,” which includes both ports and trunks.)

Root Hello Time - The interval (in seconds) at which this switch transmits a configuration message.

Root Forward Delay - The maximum time (in seconds) this switch will wait before changing states (i.e., discarding to learning to forwarding). This delay is required because every switch must receive information about topology changes before it starts to forward frames. In addition, each port needs time to listen for conflicting information that would make it return to a discarding state; otherwise, temporary data loops might result.

Topology Changes — The number of times the Spanning Tree has been reconfigured.

Last Topology Change Time - The time since the Spanning Tree was last reconfigured.

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Contents Gigabit Managed Ethernet Switch 16 PoE+ Ports Content Monitoring About this Guide Introduction Web BrowserLogin Popping Up Window LoggingWeb-Based Management Interface IP Address Setting System InformationIPv6 Address Setting Hint§Port Setting User AccountPort Setting Configuration Trunk Group SettingTrunk Distribution Algorithm Setting Trunk Distribution Algorithm SettingPage Lacp Setting Lacp SettingStatic Vlan Table Setting Static Vlan Table SettingVlan Port Setting Vlan Port SettingVLAN-Stacking Table Setting VLAN-Stacking Table SettingVlan Stacking Setting Vlan Stacking SettingHint§ Igmp Multicast Group Information Multicast Entry TableIgmp Snooping Igmp SnoopingIgmp Global Setting Igmp Vlan Setting Hint§Spanning tree settings Spanning TreePage Spanning Tree Port Setting Spanning tree port settingsPage Quality of Service QoS Port-based Priority SettingDSCP-based Priority Setting DSCP-based Priority SettingPriority to Queue Mapping Setting Priority to Queue Mapping SettingPacket Scheduling Setting Packet Scheduling SettingLldp Configurations Lldp SettingsLldp Neighbors Lldp NeighborsSnmp Setting Trap Receivers Setting Port Mirroring Setting Port mirroringPort Security Setting Port securityPage Bandwidth Control Setting Bandwidth controlPage Jumbo Frame Setting Jumbo Frame SettingManagement Access Filter Management Access FilterPower over Ethernet Setting Power over EthernetSecurity MAC Address InformationStatic MAC Setting Static MAC SettingMAC Filtering Setting 802.1x Setting 802.1x Setting802.1x Port Setting 802.1x Port SettingIP Filter Configurations IP Filter ConfigurationsPage Storm Control settings Storm Control settingsPort Isolation Port IsolationDefence Engine Defence EngineMonitoring Port Statistics InformationHttp Upgrade Http UpgradeReset Factory Defaults ResetReboot Specifications