Cisco Systems 3750 manual Message and Recovery Procedures Ethcntr Messages

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Chapter 3 Message and Recovery Procedures

ETHCNTR Messages

Error Message ETHCNTR-3-LOOP_BACK_DETECTED:, Loop-back detected on [chars]. The port is forced to linkdown.

Explanation This message occurs when a keepalive packet is looped back to the port that sent the keepalive. The loopback condition might be caused by a balun cable being accidentally connected to the port, or there might be a loop in the network. [chars] is the port.

Recommended Action Examine the cables. If a balun cable is connected, and the loopback condition is desired, no action is required. Otherwise, connect the correct cable, and bring the port up by entering the no shutdown interface configuration command. We do not recommend using the no keepalive interface command to disable keepalives. The cause of this network loop must be found and corrected. Although disabling keepalives prevents the port from being error disabled, it does not resolve the cause of the problem and can affect network stability. See CSCea46385 for more information.

Error Message ETHCNTR-3-MOLSENDINT: Molecule send from interrupt handler

Note This message applies only to Catalyst 3550 switches.

Explanation An interrupt handler is accessing the hardware in an impermissible manner.

Recommended Action Find out more about the error by using the show tech-supportprivileged EXEC command and by copying the error message exactly as it appears on the console or system log and entering it in the Output Interpreter tool. Use the Bug Toolkit to look for similar reported problems. For more information about these online tools and about contacting Cisco, see the “Error Message Traceback Reports” section on page 2-7for more information.

Error Message ETHCNTR-3-NETWORK_ERROR: Frame received on queue [dec] contained network error. Source thread [dec], source interface [chars].

Note This message applies only to Catalyst 3550 switches.

Recommended Action The frame that is stored on the switch has an error. The first [dec] is the ingress queue, the second [dec] is the source thread, and [chars] is the ingress interface.

Recommended Action Copy the message exactly as it appears on the console or in the system log. Research and attempt to resolve the error by using the Output Interpreter. Use the Bug Toolkit to look for similar reported problems. If you still require assistance, open a case with the TAC, or contact your Cisco technical support representative, and provide the representative with the gathered information. For more information about these online tools and about contacting Cisco, see the “Error Message Traceback Reports” section on page 2-7.

Error Message ETHCNTR-3-NO_HARDWARE_RESOURCES: Not enough hardware resources. Shutting down [chars].

Note This message applies only to Catalyst 3750, 3560, 2975, 2970, and 2960 switches.

Catalyst 3750, 3560, 3550, 2975, 2970, and 2960 Switch System Message Guide

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Contents Americas Headquarters Page N T E N T S IiiNetworkportsatellite Messages PM Messages OL-8551-04 Conventions AudiencePurpose ViiRelated Publications ViiiSee these documents for other information about the switch Device manager online help available on the switchOL-8551-04 How to Read System Messages System Message Overview2975 switches Automatic quality of serviceAuto-QoS only Catalyst Switches Boot loader patchProtocol only Catalyst 3750 Switches Catalyst 3550 switch onlyPower over Ethernet PoE GigaStack Gbic moduleFacility Code Description Location Mac address table manager only Ternary content addressable memoryWrlscntr Messages Catalyst 3750 Integrated Wireless LAN QoS trusted boundaryType of Information Error Message Traceback Reports Output InterpreterOL-8551-04 Message and Recovery Procedures Autoqos Messages, page 3-8only Catalyst 3550 switchesPBR Messages, page 3-75only Catalyst 3550 switches Ipdevicetrackingha Messages,SDM Messages, page 3-118only Catalyst 3750 and 2975 switches Aclmgr MessagesMessage and Recovery Procedures Aclmgr Messages Message and Recovery Procedures Aclmgr Messages Message and Recovery Procedures Aclmgr Messages Message and Recovery Procedures Aclmgr Messages This section contains the Flex Link messages Backupinterface MessagesAutoqos Messages Bspatch Messages This section contains the boot loader patch messagesBadtransceiver Messages This section contains the Badtransceiver messageThis section contains the configuration manager messages Cfgmgr MessagesMessage and Recovery Procedures Cfgmgr Messages Error Message CFGMGR-6-APPLYINGRUNNINGCFG as new master CMP Messages Dhcpsnooping Messages Message and Recovery Procedures Dhcpsnooping Messages Message and Recovery Procedures Dhcpsnooping Messages DHCPSNOOPINGCAT3550 Messages This section contains the Ieee 802.1x messages DOT1QTUNNELLING MessagesDOT1X Messages DOT1XSWITCH Messages Recommended Action Reload the deviceMessage and Recovery Procedures DOT1XSWITCH Messages Message and Recovery Procedures DOT1XSWITCH Messages Message and Recovery Procedures DOT1XSWITCH Messages DTP Messages DWL Messages EC Messages Message and Recovery Procedures EC Messages Message and Recovery Procedures EC Messages Error Message EC-5-NOLACP Invalid EC mode, Lacp not enabled Environment Messages This section contains the Environment messagesEthcntr Messages Error Message ETHCNTR-3-INTERNALERROR Internal Error chars Message and Recovery Procedures Ethcntr Messages Message and Recovery Procedures Ethcntr Messages Expresssetup Messages This section contains messages for the Express Setup featureFM Messages Error Message FM-3-CONFLICT chars chars conflicts with chars Error Message FM-3-GOTVLABEL Got label for Vlan dec Message and Recovery Procedures FM Messages Message and Recovery Procedures FM Messages Message and Recovery Procedures FM Messages Message and Recovery Procedures FM Messages Tcam ID Message and Recovery Procedures FM Messages Frntendctrlr Messages This section contains the front-end controller messagesGbic Messages Message and Recovery Procedures Gbic Messages Message and Recovery Procedures Gbic Messages Gbicsecurity Messages Message and Recovery Procedures Gbicsecurity Messages Message and Recovery Procedures Gbicsecurity Messages Gbicsecuritycrypt Messages Gbicsecurityunique Messages Gigastack Messages This section contains the GigaStack Gbic module messagesHardware Messages This section contains hardware messagesMessage and Recovery Procedures Hardware Messages Hlfm Messages Hpsecure Messages This section contains port-security messagesIdbman Messages Message and Recovery Procedures Idbman Messages Message and Recovery Procedures Idbman Messages Igmpquerier Messages This section contains the Igmp querier messagesIlpower Messages This section contains the Power over Ethernet PoE messagesMessage and Recovery Procedures Ilpower Messages Message and Recovery Procedures Ilpower Messages Message and Recovery Procedures Ilpower Messages Message and Recovery Procedures Ilpower Messages Message and Recovery Procedures Ilpower Messages Message and Recovery Procedures Ilpower Messages Error Message IMAGEMGR-6-AUTOCOPYSW chars Imagemgr MessagesIpdevicetrackingha Messages L2TM Messages L3TCAM MessagesMaclimit Messages This section contains the Macmove messages Macmove MessagesNetworkportsatellite Messages Pagpdualactive Messages PBR Messages This section contains the policy-based routing PBR messagesMessage and Recovery Procedures PBR Messages PHY Messages This section contains the PHY messagesMessage and Recovery Procedures PHY Messages Pimsn Messages Platform Messages This section contains low-level platform-specific messagesPlatformfbm Messages Platformhcef Messages This section has the Cisco Express Forwarding CEF messagePlatformhplm Messages This section has the platform pseudo label manager messagesPlatform IPC Messages PLATFORMIPv6 Message This section contains the IP Version 6 messagePlatformpbr Messages This section contains policy based routing PBR messagesMessage and Recovery Procedures Platformpbr Messages Platformpm Messages This section contains platform port manager PM messagesPlatformrpc Messages Message and Recovery Procedures Platformrpc Messages Platformspan Messages Platformucast Messages This section contains platform unicast routing messagesError Message PLATFORMUCAST-3-CEF chars Error Message PLATFORMUCAST-3-HSRP chars Platformvlan Messages This section contains platform Vlan messagesPlatformwccp Messages PM Messages Message and Recovery Procedures PM Messages Error Message PM-4-BADCOOKIE chars was detected 100 101 102 103 104 105 Portsecurity MessagesThis section contains the port security messages 106 Qatm Messages 107QM Messages 108109 110 Qosmgr Messages 111112 113 114 115 116 Rmon Messages 117118 SDM MessagesSpan Messages 119 Spantree MessagesThis section contains the spanning-tree messages 120 121 122 123 124 125 Vlan ID 126Stackmgr Messages Spantreefast MessagesSpantreevlansw Messages 127128 129 130 Stormcontrol MessagesThis section contains the storm control messages 131 Supervisor MessagesSupq Messages 132 Swdai Messages 133134 135 Swmacauth Messages 136137 Swmatm MessagesSwvlan Messages 138 139 140 141 142 143 144 This section contains the QoS trusted boundary TB messages Switchqostb MessagesTcammgr Messages 145146 Udld Messages 147148 Ufastmcastsw Messages 149Vqpclient Messages 150151 Wccp MessagesWrlscntr Messages 152 IN-1 Documentation, relatedDocument conventions IN-2 IN-3 IN-4 Publications, related Power over Ethernet messagesPlatformipc messages Platformpbr messages IN-5IN-6
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3750 specifications

The Cisco Systems 3750 series is a family of enterprise-class stackable switches that were designed to provide high-performance networking solutions for organizations requiring robust management features, security, and scalability. Known for their reliability and advanced capabilities, the 3750 series is particularly aimed at accommodating the demands of LAN environments in organizations ranging from small businesses to large enterprises.

One of the defining features of the Cisco 3750 series is its StackWise technology. This innovative feature enables the stacking of up to nine switches together, allowing them to function as a single logical unit. This results in simplified management, higher redundancy, and increased scalability. The StackWise technology allows for seamless failover and enhanced bandwidth between the stacked switches.

In terms of performance, the 3750 series supports Layer 2 and Layer 3 switching, offering routing capabilities to handle both traditional and modern network demands. It is equipped with advanced Quality of Service (QoS) features, ensuring that critical applications such as voice and video are prioritized for optimal performance.

The Cisco 3750 also features extensive security capabilities. It incorporates features such as IEEE 802.1X authentication, DHCP snooping, and dynamic ARP inspection to protect against unauthorized access and various network attacks. These enhancements help maintain data integrity and secure communications across the network.

Another noteworthy characteristic of the 3750 series is its support for Power over Ethernet (PoE). PoE allows for the delivery of power over Ethernet cables to connected devices, such as IP phones and wireless access points, facilitating simpler installations and reducing the need for additional power outlets.

The Cisco 3750 series also provides a comprehensive set of management tools. With features like Cisco's Embedded Event Manager (EEM) and extensive SNMP support, network administrators can efficiently monitor and manage network performance, troubleshoot issues, and maintain high availability.

Additionally, the series is compatible with Cisco's IOS software, which provides a rich set of features, including advanced routing protocols, multicast support, and extensive security options, further enhancing the functionality and versatility of the switches.

Overall, the Cisco Systems 3750 series stands out for its stackable design, high-performance features, security capabilities, and management tools, making it a popular choice for organizations looking for dependable and scalable networking solutions.