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3. Troubleshooting Functional Failures in Operation

No.		Troubleshooting Steps and Command	Action

4	Collecting analysis information		Send the collected information to the support division.
	•	Execute the show tech-support
		command and the dump bsu command in
		this order for two times. [IP8800/S6700]
	•	Execute the show tech-support
		command and the dump psp command in
		this order for two times.
		[IP8800/S6600] [IP8800/S6300]
	•	Execute the show tech-support
		command for two times.
		[IP8800/S3600] [IP8800/S2400]
	Note
	•	When executing the dump bsu command or
		the dump psp command, do not execute the
		next command until the log appears
		indicating memory dump file collection has
		been completed.
		[IP8800/S6700] [IP8800/S6600]
		[IP8800/S6300]
	•	Before executing the dump bsu command
		or the dump psp command for the second
		time, put aside the memory dump file created
		for the first time because executing the
		command clears the file created in the
		previous time.
		[IP8800/S6700] [IP8800/S6600]
		[IP8800/S6300]

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NEC IP8800/S2400, IP8800/S6600, IP8800/S3600, IP8800/S6700, IP8800/S6300 manual 125

IP8800/S6700, IP8800/S3600, IP8800/S6600, IP8800/S6300, IP8800/S2400 specifications

The NEC IP8800 series comprises a range of advanced networking solutions designed for various applications ranging from enterprise networking to service provider environments. This series includes models such as the IP8800/S2400, IP8800/S3600, IP8800/S6300, IP8800/S6600, and IP8800/S6700, each with its unique set of features and capabilities aimed at delivering robust performance, security, and scalability.

The IP8800/S2400 is an entry-level switch tailored for small to medium enterprises. It features a compact design and high port density, making it ideal for network edge applications. The model supports both Layer 2 and Layer 3 switching capabilities, enabling efficient traffic management. With its robust security features, including access control lists and support for VLANs, the IP8800/S2400 ensures secure connectivity.

Moving to the IP8800/S3600, this switch is designed for data center environments and offers high throughput with advanced routing capabilities. It is equipped with high-capacity 10G and 40G Ethernet ports, facilitating faster data transfer rates. The S3600 supports various protocols such as MPLS and Segment Routing, enhancing its ability to manage complex network architectures. Its energy-efficient design also helps reduce operational costs.

The IP8800/S6300 is tailored for high-performance networking scenarios, featuring a flexible architecture that supports both traditional and cloud-based services. With extensive QoS capabilities, the S6300 optimizes traffic flow and manages bandwidth efficiently, ensuring high-quality service delivery. Its virtualization support allows for easier integration into modern, software-defined networking environments.

The IP8800/S6600 provides a comprehensive solution for service providers and large enterprises, boasting high scalability and modularity. This model supports advanced features such as network slicing and the ability to handle high-density 100G interfaces. Its robust management tools, including centralized control and automation capabilities, simplify network operations significantly.

Finally, the IP8800/S6700 represents the pinnacle of the series, designed for mission-critical applications requiring the utmost reliability and performance. It supports advanced analytics, AI-driven insights, and comprehensive telemetry, enabling proactive network management. With high availability features and extensive redundancy options, the S6700 ensures continuous operation, making it ideal for core network functions.

In summary, the NEC IP8800 series offers a versatile range of switches that combine advanced technologies, high performance, and robust security features, catering to various networking needs across different industries. Each model is designed to provide not only superior connectivity but also the flexibility and scalability required in today’s fast-paced digital landscape.

Contents

IP88S36-T001-000 Troubleshooting Guide Copyright c 2009, NEC Corporation, All rights reserved November, 2009 1st Edition IP88S36-T001-000 Intended users IntroductionApplicable product Correction of this manual IP8800/S6700, IP8800/S6600, IP8800/S6300 Troubleshooting Guide IP88S36-T001Operation Commands, Vol.1 IP88S63-S006 IP8800/S3600, IP8800/S2400 Introduction III BGP4+ Conventions abbreviations CIR MIP Conventions kB, MB, GB, and TB Page Contents IPv4 Network Communication Failure Layer 2 Authentication Communication FailureNetwork Interface Communication Failure Layer 2 Network Communication Failure Snmp Communication Failure 110 Problems on Power Saving Feature 123When Resource Shortage Occurs in Shared Memory 135 Communication Failure on High-reliability Function 103 Restarting the System 160 Transferring Files for Maintenance Information 144Testing Line 154 Writing to MC 152 Be careful in operation Safety guide for the IP8800/S6700 seriesSymbols Operations and actions Do not put foreign matters in the device Do not use power not specifiedDo not place the device in an unstable location Do not remove the device cover Do not touch the potential tap Grounding is required Do not plug too many leads into a single outlet Handle the power cable with caution Keep air dusters away from fire Before carrying the device, remove the cables Do not install the device in a humid or dusty environmentDo not stack the devices Do not block the intake and/or exhaust port Do not drop an optional component Do not roughly handle the power cableDo not touch the inside of the device An SFP-T has the following label attached Lithium batteryCleaning Be careful of laser beams Do not attach a label or the like to the transceivers Handle a memory card with care Attach an option component with care Use air dusters with care Handle the optical connector with careMaintenance and cleaning Do not bring a TV or radio close to the devicePage Safety guide for the IP8800/S6600 series Safety Guide IP8800/S6600 Safety Guide IP8800/S6600 Model Mass Number of people XixIP8800/S6604 45 kg/100 lb Or more IP8800/S6608 64 kg/142 lb Label below is attached to the device Keep air dusters away from fire IP8800/S6604 Use support brackets only for IP8800/S6604Use support brackets with care Model Items Do not block the intake and/or exhaust port Do not roughly handle the power cable Lithium battery Handle a memory card with care Attach an option component with care Do not bring a TV or radio close to the device Safety guide for the IP8800/S6300 series Safety Guide IP8800/S6300 Safety Guide IP8800/S6300 Grounding is required IP8800/S6304 45kg/100 lb Or more IP8800/S6308 64kg/142 lb Keep air dusters away from fire IP8800/S6304 Use support brackets only for IP8800/S6304 Do not block the intake and/or exhaust port Do not roughly handle the power cable Lithium battery Handle a memory card with care Damaged by the static electricity Do not bring a TV or radio close to the device Operations and Handling Safety guide for the IP8800/S3600 and IP8800/S2400 series Do not put foreign materials in the device Safety Guide IP8800/S3600 IP8800/S2400Device in Trouble Action to Be Taken Do not use power not specified Do not use too many plugs at a single outlet Do not use the cable with the protection cap detached Do not block the intake/exhaust port Xlvi Precaution on carrying the device Be careful of the laser beams Do not ride, recline, or place a heavy loading on the device Do not bring a TV or radio close to the device Handle a memory card and a dummy memory card with care Before installing or Uninstalling Discarding the device Page Overview Overview Failure Analysis Overview System and Partial Failure Analysis Overview LED Indications, Switches, and ConnectorsName Type Status Description Failure Analysis for IP8800/S3600 and IP8800/S2400 Connecting operation terminalOverview Name Type Status Description LED Green Lit in green Power on OFF Power OFF or power failureConnector Memory card slot Name Type Function Description Blocked Overview Name Type Function DescriptionOrange 100/1000BASE-T Ethernet port Sent/received Functional Failure Status and Reference Functional Failure Analysis OverviewSubitem Reference Overview Subitem Reference Schedule Is Disabled IP8800/S6700 Time Synchronization by NTP Is DisabledActive System Switchover Is Disabled Active BSU Switchover Is DisabledPage Troubleshooting System Failures Failure Action Troubleshooting Procedure on System FailuresTroubleshooting System Failures Troubleshooting System Failures Troubleshooting System Failures Action Power Failure Check Items Replacement Method of Optional Components Follow the steps in -4 Isolating Power Supply Failure Troubleshooting for IP8800/S3600 and IP8800/ S2400 Power failure according to -4 Isolating Power Supply Isolating Power Supply FailureFailures on External Power Unit to isolate the failure Isolating Failures on Power Module Isolating Failures on External Power UnitIsolating Failures on External Power Unit Isolating Failures on External Power Unit Main Body Replacement Method of System and Optional Components Troubleshooting Functional Failures in Operation Troubleshooting Functional Failures in Operation Forgot the Login User Password Problems on Login PasswordForgot the System Administrator Password Instruction in -1 Problems and Actions When MC Problems on MCMC not found is displayed when MC is accessed Problems and Actions When MC not found is displayed System and Partial Failure Analysis Overview Problems on Operation TerminalProblems and Actions When Connecting to Console Unable to Input/Display from the Console Correctly Problems and Actions When Connecting to Modem Login from the Remote Operation Terminal Is FailedSymptom Action to Be Taken or Reference Some users remain in the login Login Authentication Using RADIUS/TACACS+ Is DisabledCommand Authorization Using RADIUS/TACACS+ Is Disabled Disabled, check No or later Troubleshooting Functional Failures in Operation Checking port status NIF Status Problem ActionNetwork Interface Communication Failure Ethernet Port Cannot Be Connected Checking statistical information Port Status Problem ActionCheck and Action for Port Status Check and Action for BSU/PSP Operation Status Communication Failure in Basic Switching Unit BSU/PSPBSU Operation Problem Action Status Checking BSU/PSP operation status Configuration of Basic Switching Unit BSU Status, see 3.20 Problems on RedundantActions against Troubles on 10BASE-T/100BASE-TX/ 1000BASE-T Troubleshooting Steps Problem Action Troubleshooting for Failed 10BASE-T/100BASE-TX/1000BASE-T 10 Failure Analysis Method for Troubles on 1000BASE-X Actions against Troubles on 1000BASE-X Actions against Troubles on 10GBASE-R 11 Failure Analysis Method for Troubles on 10GBASE-R Troubleshooting Steps and Command Action Communication Failure on Using PoE Allocations Communication Failure on Using Link AggregationFunction of the port by the power inline command Check the setting of failed link aggregation Tion, set the Duplex mode to Full Check the setting of failed port status usingCH Disabled Link aggregation group is Disabled and Down Layer 2 Network Communication Failure Layer 2 Communication by Vlan Is DisabledChecking Vlan status Take the action below according to the Type displayed Checking MAC address table Checking filtering/QoS Failures on Using Spanning TreeFlooding is executed if the MAC address is not displayed 14 Spanning Tree Failure Analysis Method Failures on Using Ring ProtocolSee 3.4 Network Interface Communication Failure Analysis Flow Replace the faulty PartsTroubleshooting Steps Action Command 15 Ring Protocol Failure Analysis Method Spanning tree or Gsrp is used at Configurations Same time Command to check timer values forTransmission delay is not considered See the manual Configuration Guide Multicast Relay by Igmp snooping Is Disabled Multicast in the VLAN. IP8800/S3600 16 Troubleshooting on Multicast RelayHas been set up appropriately for system operation Show system command Group address If a multicast router is connected, check mrouter-port Is it a relay within the same VLAN? Multicast Relay by MLD snooping Is Disabled Check the following You want to use IPv6 multicast at 17 Troubleshooting on Multicast Relay Using the show mld-snooping IPv4 Network Communication Failure Communication Is Disabled or Is Disconnected Route Checking log Checking interface status Checking ARP resolution information with neighboring system Checking option license OP-NPAR OP-NPAR Checking DHCP/BOOTP setting informationChecking filtering/QoS setting information Checking unicast routing information DHCP/BOOTP relay communication failure IP Addresses Cannot Be Assigned Using Dhcp Function Checking the log and interface Checking ARP resolution information with neighboring systemChecking route information Checking DHCP/BOOTP setting information Checking filtering/QoS setting informationDhcp server communication trouble Checking the log message and interface Checking configurationAssociated with each log message Checking layer 2 network DynamicDNS Cooperation in Dhcp Function Is Disabled System DNS update disabled Check the configuration Checking route information 18 RIP Failure Analysis Method IPv4 Unicast Routing Communication FailureNo RIP Routing Information Exists No Ospf Routing Information Exists 21 VRF Failure Analysis Method No BGP4 Routing Information ExistsNo Routing Information Exist OP-NPAR 20 BGP4 Failure Analysis Method 22 Common Check Items Communication on IPv4 PIM-SM Network Is DisabledIPv4 Multicast Routing Communication Failure Common check items BSR check items 24 Rendezvous Point Router Check Items Rendezvous point router check itemsLast-hop-router check items 23 BSR Check Items First-hop-router check items Multicast Data Is Double-relayed on IPv4 PIM-SM Network26 first-hop-router Check Items Multicast Sender First-hop-router Last-hop-router Data Communication on IPv4 PIM-SSM Network Is Disabled27 Check Items When Double-relay Continues 28 Common Check Items 29 last-hop-router Check Items 30 first-hop-router Check Items Multicast Data Is Double-relayed on IPv4 PIM-SSM Network Is Double-relayed on IPv4 PIM-SSM Network 31 Check Items When Double-relay Continues5 IPv4 Multicast Communication Failure In VRF OP-NPAR 32 Check Items for VRF IPv6 Network Communication Failure Checking the log and interface Checking NDP resolution information with neighboring systemChecking unicast interface information Checking RA setting information 2 IPv6 Dhcp TroubleshootingConfiguration is not distributed See the manuals Message Log Reference Checking the status of the IPv6 Dhcp server in this systemCheck the status of IPv6DHCP server Duplicate acquisition by the client Procedure to check configuration Procedure for restoring from duplicate distribution Checking client settingCondition Cause Binding Information Route Information Reproducing the Duid Reconfiguring route informationIf Duid of this system conflicts with other system Deleting the file containing Duid information Checking the Duid 35 Failure Analysis of RIPng 10 IPv6 Unicast Routing Communication FailureNo RIPng Routing Information Exists No OSPFv3 Routing Information Exists Go to No.5 if no route exist Hop address resolution in BGP4+ exist ExistsNo BGP4+ Routing Information Exists 37 BGP4+ Failure Analysis Method 11 IPv6 Multicast Routing Communication Failure Communication on IPv6 PIM-SM Network Is Disabled38 Common Check Items If the unicast route does not exist, see 3.10 IPv6 Unicast Neighboring router using the show ipv6 pimCommand with interface parameter specified Relay target group address Rendezvous point setting 41 last-hop-router Check Items Multicast receiver Configuration to run MLD39 BSR Check Items 40 Rendezvous Point Router Check Items Multicast Data Is Double-relayed on IPv6 PIM-SM Network 43 Check Items When Double-relay Continues42 first-hop-router Check Items 44 Common Check Items Communication on IPv6 PIM-SSM Network Is DisabledTo the ports to which neighboring routers connect 45 last-hop-router Check Items For MLD snooping Multicast Data Is Double-relayed on IPv6 PIM-SSM Network46 first-hop-router Check Items Group join function is running 47 Check Items When Double-relay Continues Communication Failure on Using Ieee Layer 2 Authentication Communication Failure48 Ieee 802.1X Failure Analysis Method To see if authentication failed Following cause. Check to see if there is any problemTable setting failed Authentication dynamic mode, go to No Tunnel-Type for the Radius server to VLAN13 Command and check to see if dynamicAssignment of Vlan authentication Authentication dynamic. Match the Vlan ID set for 50 Failure Analysis Method for Web Authentication Communication Failure on Using Web Authentication Port for authentication Check to see authentication Ipv4 access listConfirm that authentication IPv4 access list is applied IPv4 access list are set in the access list as well Restarted. The Web server starts to perform authentication AuthenticatedCommand Soon After Suspended When Web Server Is restarted Using Check Point Troubleshooting Steps 51 Checking Web Authentication ConfigurationSetting Information Failure Analysis Method for Web Authentication 52 Web Authentication Failure Analysis Method 53 Failure Analysis Method for MAC Authentication Communication Failure on Using MAC Authentication Configuration command mac-authentication port IPv4 access list is appliedNot applied to the port for authentication Authentication is displayed by the show To No.7 Failure Analysis Method for MAC Authentication Communication Failure on Using Authentication Vlan OP-VAA54 Checking MAC Authentication Configuration 55 MAC Authentication Failure Analysis Method 100 56 Authentication Vlan Failure Analysis Method When Vlan Identification Table Resource Shortage Occurs 57 Checking Authentication Vlan Configuration101 102 Gsrp Communication Failures Communication Failure on High-reliability Function 104 60 Analysis Method for Gsrp Unknown Adjacency 105 61 Vrrp Failure Analysis Method 106 107 62 Vrrp Failure Analysis Method 108 109 Set up, and the virtual router may operate. IP8800/S3600 MIBs Cannot Be Obtained from Snmp Manager Snmp Communication FailureTraps Cannot Be Received by Snmp Manager 111 Checking route to the collector Checking operation status by operation commandChecking configuration Checking failures etc SFlow Packets Do Not Reach Collector Collector information must be set correctly Checking configuration Checking NIF/port status Checking settings of collector114 Checking transmission interval of counter sample Flow Sample Does Not Reach CollectorCounter Sample Does Not Reach Collector Checking presence/absence of the relay packet 64 Failure Analysis When Using Oadp Function 63 Failure Analysis Method When Using Lldp FunctionsNetwork Interface Communication Failure Otherwise, see 3.5 Layer 2 Network Communication Failure Checking Filtering/QoS Setting Information to check for it117 Otherwise, see 3.4 Network Interface Communication Failure NTP Communication Failure Time Synchronization by NTP Is Disabled65 NTP Failure Analysis Method Port Becomes Inactive Due to IEEE802.3ah/UDLD Function Communication Failure on IEEE802.3ah/UDLD Function 67 Problems and Actions When Switching Active System Active System Switchover Is DisabledCause for Switchover Disabled Troubleshooting Steps 68 Failure Analysis Method When BSU Switchover Disabled Active BSU Switchover Is Disabled Boards 122 Display of Result Confirmation Cause Action Problems on Power Saving FeatureSet to disabled, delete the entry that is Schedule error caused by Neighboring system in 3.9.1 Communication Is Disabled or Is Neighboring system in 3.6.1 Communication Is Disabled or IsDisconnected 125 Checking Filtering/QoS Setting Information Communication Failure Caused by Settings of Filtering/QoSChecking packet discarding by filtering 127 IP8800/S3600 and IP8800/S2400Page 129 IP8800/S6700 IP8800/S6600 IP8800/S6300 Operation Log Message for Checking Resource Use Status MAC Address Table Resource ShortageChecking Resource Usage of MAC Address Table Operation Log Message for Checking Resource Usage File Name Specified for get Log Message 131 132 Checking Vlan Identification Table Resource Usage Tag translation function Vlan setting.*1Vlan Identification Table Entry Clear Method Entry to Be Cleared Step Checking Resource Usage of Shared Memory When Resource Shortage Occurs in Shared MemoryPage 137 Collecting Failure Information File Name Specified for get Acquiring Basic Information Collecting Failure InformationAvailable Information via ftp Collecting Failure Information 139 Collecting basic information Collecting memory dump when communication failure occurs Collecting Failure Information Using dump Command IP8800140 141 After above log is displayed, execute next the dump command 142 143 Maintenance Information Transferring Files for Maintenance InformationStorage Location and File Name File Transfer Transferring dump files to the remote operation terminal Transferring Files Using ftp Command145 146 147 ETA 148 Transferring failure backup information files to a consoleTransferring dump files to a console Transferring log information to a console 149 IP8800/S6700 IP8800/S6600 IP8800/S6300 150 Files That Can Be Acquired Using ftp CommandFile Name Specified for Acquired Files 151 10 Collecting Dump Files from the Remote Terminal Writing to MC Writing File to MC Using Operation Terminal 153 Line Test Line Test Type for Each Frame Loopback Point Testing LineEthernet Port Checking frame loopback within system 155 Command IP8800/S6700 IP8800/S6600 IP8800/S6300 156 Checking frame loopback at a loop connector 157 Page 159 Restarting the System Restarting the System Restarting the System Parameter to input Active Standby None 161Set the system to restart Or stop Specifying when 162 163 Collecting memory Dump Back to command input mode164 Collect Memory dump? Memorydump is Restart? 165 Appendix Appendix a Contents of show tech-support Command Display 167 168 169 170 171 172 173 IP8800/S3600 Table A-2 Details of Display Contents IP8800/S3600174 175 Information 2 for Ver.10.7 Earlier Update for Ver.11.1 and later176 Log information during software 177 178 179 180 IP8800/S2400 Table A-3 Details of Display Contents IP8800/S2400181 182 Information on L2 loop detection For Ver.10.7 and later 183 MLD snooping group information Built-in WEB authentication DB For Ver.10.3 and laterAuthenticated user account 184 185 Page 187 Index Index 188

[IP8800/S3600] [IP8800/S2400]

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IP8800/S6700, IP8800/S3600, IP8800/S6600, IP8800/S6300, IP8800/S2400 specifications