Brocade MLX Series and Brocade NetIron XMR Diagnostic Guide ...

Interface module diagnostics 2(387059 bytes) from code flashIronWare : Version 3.5.0T177 Copyright (c) 1996-2009 Brocade Communications, Inc.Compiled on Jul 19 2009 at 07:50:18 labeled as xmlp03500b279(3163145 bytes) from PrimaryFPGA versions:Valid PBIF Version = 2.13, Build Time = 2/14/2009 11:55:00Valid XPP Version = 3.05, Build Time = 5/14/2009 11:12:00Valid XGMAC Version = 0.11, Build Time = 10/11/2009 12:45:00Clearing traffic management statisticsTo clear traffic management statistics, enter the clear tm-voq-stat src_port dst_port command.The following commands can be useful for displaying and clearing information about interfacemodules:• clear tm-voq-stat src_port dst_port [priority]• show tm-voq-stat src_port multicast• clear tm-voq-stat src_port multicast• show tm-voq-stat src_port cpu-queue• clear tm-voq-stat src_port cpu-queueFor information about these commands, refer to the Brocade MLX Series and NetIron FamilyConfiguration Guide.Interface module debug commandsThere are no debug commands specific to interface modules.Common diagnostic scenariosCommon diagnostic situations involving interface modules can include the following situations:• The module is not receiving power.• A link has not been successfully established.• A port is not transmitting or receiving packets.• Packets fail to enter an ingress queue on the traffic manager. This can happen because thequeue has reached its maximum length, or Weighted Random Early Detection (WRED) isenabled to prevent an output queue from ever filling to capacity.Interface modules continue to send traffic when a switchover occurs between managementmodules. After a switchover event, interface modules send updates to the new active managementmodule, which verifies that the interface modules are synchronized.If the new active management module becomes out of sync with an interface module, informationon the interface module may be overwritten, which can cause an interruption of traffic forwarding.This must only occur if there is a Layer 3 topology change elsewhere in the network during themanagement module switchover. Brocade NetIron XMR and Brocade MLX series routers supportBrocade MLX Series and Brocade NetIron XMR Diagnostic Guide 3753-1002426-02