san switch trobleshooting switch

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Troubleshooting Switch Port and Interface Problems Document ID: 12027 Contents Introduction Prerequisites Requirements Components Used Conventions Physical Layer Troubleshooting Using the LEDs to Troubleshoot Check the Cable and Both Sides of the Connection Ethernet Copper and Fiber Cables Gigabit Ethernet Troubleshooting Connected vs Notconnected Most Common Port and Interface Troubleshooting Commands for CatOS and Cisco IOS Understanding Specific Port and Interface Counter Output for CatOS and Cisco IOS Show Port for CatOS and Show Interfaces for Cisco IOS Show Mac for CatOS and Show Interfaces Counters for Cisco IOS Show Counters for CatOS and Show Counters Interface for Cisco IOS Show Controller Ethernet−Controller for Cisco IOS Show Top for CatOS Common System Error Messages Error Messages on WS−X6348 Modules %PAGP−5−PORTTO / FROMSTP and %ETHC−5−PORTTO / FROMSTP %SPANTREE−3−PORTDEL_FAILNOTFOUND %SYS−4−PORT_GBICBADEEPROM: / %SYS−4−PORT_ GBICNOTSUPP %AMDP2_FE−3−UNDERFLO %INTR_MGR−DF C1−3−INTR: Queueing Engine (Blackwater) [1]: FIC Fabric−A Received Unexpected Control Code Command Rejected: [Interface] not a Switching Port Common Port and Interface Problems Port or Interface Status is Disable or Shutdown Port or Interface Status is errDisable Port or Interface Status is Inactive Uplink Port or Interface Status is Inactive Deferred Counter on the Catalyst Switch Interface Starts Incrementing Intermittent Failure to set timer [value] from vlan [vlan no] Trunking Mode Mismatch Jumbos, Giants, and Baby Giants Cannot Ping End Device Using Set Port Host or Switchport Host to Fix Startup Delays Speed/Duplex, Autonegotiation, or NIC Issues Spanning Tree Loops UDLD: One−Way Link Deferred Frames (Out−Lost or Out−Discard) Software Problems Hardware Problems

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