– For Release 12.2(18)SXF and rebuilds and earlier Observe these limitations on the number of spanning.Create and maintain a Layer 2 topology diagram of your network.BackboneFast 1.1.4 Guidelines and Restrictions for.RPVST obsoletes BackboneFast and UplinkFastĪs it has built in mechanisms that achieve the same. Tree protocols, when there is a physical Layer 2 loop, Layer 2įrames could loop indefinitely and consume all the bandwidth of the Without RPVST, or one of the other spanning Single LAN segment or a switched LAN of multiple segments. Stations, which cannot detect whether they are connected to a One active Layer 2 path can exist between any two network devices. For a Layer 2 Ethernet network to function properly, only That supports path redundancy and prevents undesirable loops in the RPVST is a Layer 2 link-management protocol These sections describe best practices for Best Practices for Layer 2ĭefined for the following layer 2 technologies: This document provides best practices for On-demand tests to confirm that a problem exists. Before you RMA hardware, use the Generic Online.With earlier releases, run the test individually. On-demand tests before putting the hardware into Release 12.2(33)SXH and later) to run the Generic Online When deploying new hardware, enter the diagnostic start system test all command (available in.The Cisco IOS software features in Release 12.2SX-For.Information, see the Cisco IOS Configuration Fundamentals Configuration Guide,
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