3Com 4007 Command Reference Manual

Also see for 4007: Getting started guide Important notice Release note Implementation guide Product guide

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3Com 4007 Command Reference Manual Manual pdf 114 page image

114 CHAPTER 6: B RIDGE- WIDE PARAMETERSbridge spanningTree3 Layer 2SwitchingModules3 MultilayerSwitchingModulesstpForwardDelaySets the amount of time that the bridge spends in each of the listeningand learning states if it is the root bridge. The current value is shown inthe bridgeFwdDelay field of the bridge display.Valid Minimum Abbreviationb sp stpfImportant Considerationsn This value temporarily prevents a bridge from starting to forward datapackets to and from a link until news of a topology change has spreadto all parts of a bridged network.n The recommended and default value is 15 seconds.n Setting the value too low can result in temporary loops while STPreconfigures the topology.n Setting the value too high can lead to a longer wait while STPreconfigures the topology.n If the configuration was not successful, the module notifies you thatyour changes failed, and you can try to reenter the changes.n Although the possible range for stpForwardDelay is 4 – 30, theavailable range is constrained by the following inequality:2 x (stpForwardDelay - 1 second) >= stpMaxAgeOptionsPrompt Description Possible Values [Default]STP forward delay Time (in seconds) that abridge spends in the listeningstate and the learning state4 – 30 seconds 15 (factorydefault), orcurrent value