Gigabit Ethernet Symbol Error
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Catalyst 6500 Series SwitchesTroubleshoot and AlertsTroubleshooting TechNotes Troubleshooting Switch Port and Interface Problems Download Print Available Languages Download Options PDF (108.2 KB) View with Adobe Reader on a variety of cisco show interface status devices Updated:Apr 03, 2009 Document ID:12027 Contents Introduction Prerequisites Requirements Components Used Conventions Physical cisco output errors Layer Troubleshooting Using the LEDs to Troubleshoot Check the Cable and Both Sides of the Connection Ethernet Copper and Fiber cisco input errors 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 cisco switch output drops 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-DFC1-3-INTR: Queueing Engine (Blackwater) [1]: FIC Fabric-A
Cisco Show Interface Errors
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 Input Errors on a Layer 3 Interface Connected to a Layer 2 Switchport Rapidly Incrementing Rx-No-Pkt-Buff Counter and Input Errors Understand Unknown Protocol Drops Trunking between a Switch and a Router Connectivity Issues due to Oversubscription Subinterfaces in SPA Modules Troubleshooting rxTotalDrops Troubleshoot Output Drops Last Input Never from the Output of Show interface Command Related Information Introduction This document is intended to help determine why a port or interface experiences problems. This document applies to Catalyst switches that run CatOS Software on the Supervisor or Cisco IOS System Software on the Supervisor. Prerequisites Requireme
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Cisco Crc Errors
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resides at the top of the physical layer (PHY), and provides an interface between the Physical Medium Attachment (PMA) https://en.wikipedia.org/wiki/Physical_Coding_Sublayer sublayer and the Media Independent Interface (MII). It is responsible for data encoding/decoding, scrambling/descrambling, alignment marker insertion/removal, block and symbol redistribution, and lane block synchronization and deskew.[1] Contents 1 Description 2 Specifications 2.1 Fast Ethernet 2.2 Gigabit Ethernet 2.3 10 Gigabit Ethernet 2.4 25 Gigabit Ethernet 2.5 40/100 Gigabit Ethernet 2.6 Lattice cisco show Semiconductor multi-protocol 3 References 4 External links Description[edit] The Ethernet PCS sublayer is at the top of the Ethernet physical layer (PHY). The hierarchy is as follows: Data Link Layer (Layer 2) LLC (Logical Link Control Sublayer) MAC (Media Access Control Sublayer) RS (Reconciliation Sublayer) - This sublayer processes PHY Local/Remote Fault messages cisco show interface and handles DDR conversion PHY Layer (Layer 1) PCS (Physical Coding Sublayer) - This sublayer determines when a functional link has been established, provides rate difference compensation, and performs coding such as 64b/66b encoding and x 58 + x 39 + 1 {\displaystyle x^{58}+x^{39}+1} scrambling/descrambling PMA (Physical Medium Attachment Sublayer) - This sublayer performs PMA framing, octet synchronization/detection, and x 7 + x 6 + 1 {\displaystyle x^{7}+x^{6}+1} scrambling/descrambling PMD (Physical Medium Dependent Sublayer) - This sublayer consists of a transceiver for the physical medium Specifications[edit] Fast Ethernet[edit] 100BASE-X for fiber (100BASE-FX) and twisted pair copper (100BASE-TX) encodes data nibbles to five-bit code groups (4B/5B).[2] Gigabit Ethernet[edit] 1000BASE-X for fiber and 150Ω balanced copper (twinaxial) uses 8b/10b encoding with a symbol rate of 1.25 GBd.[3] 1000BASE-T for twisted pair copper splits the data into four lanes and uses four-dimensional, five-level (quinary) Trellis modulation with PAM-5 and a symbol rate of 125 MBd.[4] 10 Gigabit Ether