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H3C S6550XE-HI Switch Series

Troubleshooting Guide

Document version: 6W100-20211028

Copyright © 2021 New H3C Technologies Co., Ltd. All rights reserved.
No part of this manual may be reproduced or transmitted in any form or by any means without prior written consent of New
H3C Technologies Co., Ltd.
Except for the trademarks of New H3C Technologies Co., Ltd., any trademarks that may be mentioned in this document are
the property of their respective owners.
The information in this document is subject to change without notice.

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Содержание S6550XE-HI Series

Страница 1: ... this manual may be reproduced or transmitted in any form or by any means without prior written consent of New H3C Technologies Co Ltd Except for the trademarks of New H3C Technologies Co Ltd any trademarks that may be mentioned in this document are the property of their respective owners The information in this document is subject to change without notice ...

Страница 2: ...Fan tray failure 8 Symptom 8 Troubleshooting flowchart 9 Solution 9 Related commands 10 Troubleshooting ACL 11 ACL application failure with an error message 11 Symptom 11 Troubleshooting flowchart 11 Solution 11 ACL application failure without an error message 11 Symptom 11 Troubleshooting flowchart 12 Solution 12 Packet loss or forwarding failure 13 Symptom 13 Troubleshooting flowchart 13 Solutio...

Страница 3: ... send packets 32 Symptom 32 Troubleshooting flowchart 32 Solution 32 Related commands 33 Troubleshooting system management 35 High CPU utilization 35 Symptom 35 Troubleshooting flowchart 35 Solution 35 High memory utilization 37 Symptom 37 Troubleshooting flowchart 37 Solution 37 Related commands 38 Troubleshooting other issues 39 Layer 2 forwarding failure 39 Symptom 39 Troubleshooting flowchart ...

Страница 4: ...t Output from the commands executed during the troubleshooting process To ensure safety wear an ESD preventive wrist strap when you replace or maintain a hardware component If hardware replacement is required use the release notes to verify the hardware and software compatibility Collecting log and operating information IMPORTANT To facilitate troubleshooting enable the following features Informat...

Страница 5: ...ollowing items Device status CPU status Memory status Configuration status Software entries Hardware entries Collecting common log messages 1 Save the common log messages from the log buffer to a log file By default the log file is saved in the logfile directory of the flash memory on each member device Sysname logfile save The contents in the log file buffer have been saved to the file flash logf...

Страница 6: ...SB Details not shown Collecting operating statistics You can collect operating statistics by saving the statistics to a file or displaying the statistics on the screen When you collect operating statistics follow these guidelines Log in to the device through a network port or management port if any instead of the console port as long as possible Network and management ports are faster than the con...

Страница 7: ...c 2004 2017 New H3C Technologies Co Ltd All rights reserved H3C S6550XE 54QC HI uptime is 0 weeks 0 days 7 hours 9 minutes Last reboot reason Cold reboot Boot image flash S6550XE boot bin Boot image version 7 1 070 ESS 1106 Compiled Aug 24 2017 16 00 00 System image flash S6550XE system bin System image version 7 1 070 ESS 1106 Compiled Aug 24 2017 16 00 00 Contacting technical support If you cann...

Страница 8: ...oot transceiver modules and ports see Troubleshooting ports Unexpected switch reboot Symptom The switch reboots unexpectedly when it is operating Troubleshooting flowchart Figure 1 Troubleshooting unexpected switch reboot Solution Unexpected switch reboot Can you access the CLI Collect operating information Reload the system software image Yes No Resolved End Contact the support Yes No Yes No Is t...

Страница 9: ...omatically set to the current system software image during the Boot ROM image running process 3 If the issue persists contact H3C Support Operating power module failure Symptom An operating power module fails Troubleshooting flowchart Figure 2 Troubleshooting operating power module failure Solution To resolve the issue 1 Identify the operating state of the power module Sysname display power Slot 1...

Страница 10: ... temperature If dust is accumulated on the power module remove the dust Then remove and reinstall the power module Execute the display power command to verify that the power module has changed to Normal state If the power module remains in Fault state go to step c c Install the power module into an empty power module slot Then execute the display power command to verify that the power module has c...

Страница 11: ...nd to verify that the power module has changed to Normal state If the power module remains in Absent state go to step b b Remove and install the power module into an empty power module slot Then execute the display power command to verify that the power module has changed to Normal state in the new slot If the power module remains in Absent state go to step 4 3 Remove and install the power module ...

Страница 12: ... sure the fan tray is installed securely Then execute the display fan command to verify that the fan tray has changed to Normal state If the fan tray remains in Absent state replace the fan tray 3 If the fan tray is in Fault state perform the following tasks a Execute the display environment command to display temperature information If the temperature continues to rise put your hand at the air ou...

Страница 13: ...on lists the commands that you might use for troubleshooting the hardware Command Description dir Displays information about files and directories display boot loader Displays current configuration files and system software images display environment Displays temperature information display fan Displays the operating states of the fan tray display logbuffer Displays the state of the log buffer and...

Страница 14: ... resolve the issue 1 Execute the display qos acl resource command and then check the Remaining field for ACL resources insufficiency If this field displays 0 the ACL hardware resources are exhausted 2 To free hardware resources delete unnecessary ACLs 3 If the issue persists contact H3C Support ACL application failure without an error message Symptom The system applies a packet filter or an ACL ba...

Страница 15: ...ntrol plane display qos policy control plane slot slot number b If the QoS policy does not contain a class behavior association associate the traffic behavior with the traffic class c If the QoS policy contains a class behavior association execute the display traffic classifier user defined command and the display traffic behavior user defined command to check for traffic class and behavior config...

Страница 16: ...onfigure the packet filter If there is no configuration error go to step 2 2 Verify that the ACL is configured correctly Execute the display acl command to check whether the ACL is configured correctly If the ACL is configured incorrectly reconfigure it If the ACL is configured correctly go to step 3 3 If the issue persists contact H3C Support Packet loss or forwarding failure Symptom The network ...

Страница 17: ...Sysname classifier count if match acl 3000 Sysname classifier count quit Sysname traffic behavior count Sysname behavior count accounting packet Sysname behavior count quit Sysname qos policy count Sysname qospolicy count classifier count behavior count b Apply the QoS policy to interfaces on devices along the forwarding path In this example apply the QoS policy to the incoming traffic on Twenty F...

Страница 18: ...troubleshooting ACLs Command Description display acl Displays configuration and match statistics for ACLs display diagnostic information Displays operating statistics for multiple feature modules in the system display packet filter Displays whether an ACL has been successfully applied to an interface for packet filtering display qos acl resource Displays QoS and ACL resource usage display qos poli...

Страница 19: ...16 Command Description display traffic behavior user defined Displays traffic behavior configuration ...

Страница 20: ...ice Modify IRF port bindings or reconnect IRF physical interfaces No Yes Resolved No Yes Yes No Do physical IRF links meet the rate requirements Resolved No Yes Yes No Upgrade software to the same version in the fabric Resolved Yes No No Yes Do member devices run the same software version Are IRF links up Resolved No Yes Yes No Replace with correct cables or transceiver modules Bring up the IRF li...

Страница 21: ...d When you connect two neighboring IRF members you must connect the physical interfaces of IRF port 1 on one member to the physical interfaces of IRF port 2 on the other 4 Verify that the physical IRF links meet the rate requirements a Verify that the correct transceiver modules or cables are used To connect SFP28 ports in a long distance use SFP28 transceiver modules and fibers To connect SFP28 p...

Страница 22: ...f the issue persists contact H3C Support Related commands This section lists the commands that you might use for troubleshooting IRF Command Description display interface Displays interface information Use this command to verify that each IRF port has a minimum of one physical interface in up state display irf Displays IRF fabric information including the member ID role priority bridge MAC address...

Страница 23: ...gation This section provides troubleshooting information for common issues with Ethernet link aggregation Link aggregation failure Symptom Some member ports fail to be placed in Selected state and link aggregation does not operate correctly ...

Страница 24: ...rrectly Bring all member ports up No Yes No Yes Operational key attribute configurations same as the reference port Set operational key attribute configurations same as the reference port No Yes Set the number of member ports less than or equal to allowed max number of Selected ports Yes No More member ports than allowed max number of Selected ports Operational key attribute configurations of the ...

Страница 25: ...s in the aggregation group does not exceed the configured maximum number of Selected ports a Execute the link aggregation selected port maximum command to set the maximum number of Selected ports allowed in the aggregation group The value range is 1 to 16 b Execute the display link aggregation verbose command to verify that the number of member ports does not exceed the configured maximum number o...

Страница 26: ... come up No Yes No Yes No Yes Yes No No Yes Yes No No Yes Yes No No Yes Yes No Fiber port remains in down state Contact the support Resolved Speed duplex match on local and peer port Speed duplex match on transceiver module and port Local peer port operating correctly Transceiver module cable correct Fiber correct Configure matching speed duplex Configure matching speed duplex Replace local peer p...

Страница 27: ...ils Replace the local port with a new port operating correctly 4 Verify that the transceiver module and cable are operating correctly a Use the display transceiver alarm interface command to display the alarms present on the transceiver module The device displays None if no error occurs The device displays alarms if the transceiver module fails or the type of the transceiver module does not match ...

Страница 28: ... FiveGigE1 0 1 transceiver information Transceiver Type 10G_BASE_SR4_SFP Connector Type MPO Wavelength nm 850 Transfer Distance m 100 OM3 150 OM4 Digital Diagnostic Monitoring YES Vendor Name H3C 2 Perform either of the following tasks If the vendor name field does not display H3C replace the transceiver module with an H3C transceiver module If the vendor name field displays H3C execute the displa...

Страница 29: ...0030 42 43 2b 2d 48 33 43 20 0038 57 20 20 20 06 0e 00 d4 0040 00 1a 14 14 5a 57 35 30 0048 39 43 30 30 30 30 38 20 0050 20 20 20 20 30 39 31 32 0058 30 31 20 20 68 b0 01 f2 0060 48 33 43 00 00 00 00 00 0068 00 00 00 00 00 00 00 00 0070 00 00 00 00 00 06 0e 05 0078 00 00 00 9e 00 89 00 fe 3 If the issue persists contact H3C Support Transceiver module does not support digital diagnosis Symptom The ...

Страница 30: ... the display transceiver interface command to save the transceiver module information and contact H3C Support to verify that the transceiver module supports the digital diagnosis function Sysname display transceiver interface twenty fivegige 1 0 1 Twenty FiveGigE1 0 1 transceiver information Transceiver Type 10G_BASE_SR4_SFP Connector Type MPO Wavelength nm 850 Transfer Distance m 100 OM3 150 OM4 ...

Страница 31: ...ics changes more clearly b Use the display interface command to display the incoming packet statistics and outgoing packet statistics of the port c Determine the type of error frames that are accumulating 2 If the port is a fiber port verify that the optical power of the transceiver module is operating correctly Replace it with a transceiver module with correct optical power Optical power of trans...

Страница 32: ... correctly 3 Verify that the port configurations are correct a Execute the display interface brief command b Determine whether the speed and duplex mode of the port match the speed and duplex mode of the peer port c If they do not match use the speed command and the duplex command to set the speed and duplex mode for the port 4 Verify that the port and the link medium are operating correctly a Plu...

Страница 33: ...nd to collect the diagnostic information b Contact H3C Support Sysname display diagnostic information Save or display diagnostic information Y save N display Y N Y Failure to receive packets Symptom A port is up but it cannot receive packets Troubleshooting flowchart Figure 15 Troubleshooting the failure to receive packets Solution To resolve the issue 1 Examine the packet statistics of the port A...

Страница 34: ...t the port is not in the discarding state e If a port is set to the discarding state by STP examine and modify the STP related configurations to resolve the issue As a best practice configure the port as an edge port or disable STP on the port if it is directly connected to a terminal f If the port is assigned to an aggregation group use the display link aggregation summary command to verify that ...

Страница 35: ...the ports at both ends are always up and use the display interface command to determine whether the number of outgoing packets is accumulating c Determine whether the number of error packets is accumulating 2 Verify that the port configurations do not affect packet sending a Use the display interface brief command to verify that the port configurations are correct The port configurations include t...

Страница 36: ... the attribute configurations of the port to make the port become Selected 3 Verify that the port and the link medium are correct a Plug the link medium into another port that is operating correctly and determine whether the same issue occurs b If the issue still occurs verify that the following items are operating correctly Intermediate links and devices including optical to electrical converters...

Страница 37: ...tp brief Displays brief spanning tree status and statistics display transceiver alarm interface Displays the current transceiver module alarms display transceiver diagnosis Displays the present measured values of the digital diagnosis parameters for transceiver modules display transceiver interface Displays the key parameters of transceiver modules ...

Страница 38: ...o resolve the issue 1 Execute the display cpu usage command multiple times to display CPU usage information Details not shown 2 Identify the job with a high CPU utilization Sysname display process cpu slot 2 CPU utilization in 5 secs 12 8 1 min 6 2 5 mins 5 9 JID 5Sec 1Min 5Min Name 1 0 0 0 0 0 0 scmd 2 0 0 0 0 0 0 kthreadd 3 0 0 0 0 0 0 migration 0 4 0 0 0 0 0 0 ksoftirqd 0 5 0 0 0 0 0 0 watchdog...

Страница 39: ... and 5 minute intervals Typically the average CPU usage of a job is approximately 5 3 Display the job s stack The following example was created for job 14 in probe view Sysname system view Sysname probe Sysname probe follow job 14 Attaching to process 14 khubd Iteration 1 of 5 Kernel stack c01d54a8 hub_thread 0x88c 0xa64 c006ce28 kthread 0xfc 0x12c c00588d0 do_exit 0x0 0x818 ffffffff 0xffffffff It...

Страница 40: ...play diagnostic information command to collect diagnostic information 5 Save the information displayed in the previous steps 6 Contact H3C Support High memory utilization Symptom The display memory command shows that the memory utilization of the device is higher than 60 during a period of time typically 30 minutes Troubleshooting flowchart Figure 18 Troubleshooting high memory utilization Solutio...

Страница 41: ...24 0 0 656 0 12 2 0 0 MFW_FsCache 0 0 80 0 46 1 0 0 PBR_INSTANCENODE_cachep 0 0 160 4 21 1 0 0 kioctx 0 0 168 0 23 1 0 0 IPCIM_ENTRY_IPV4_cachep More Each value line shows the memory information for a memory portion The product of the Number and Size fields shows the capacity of the memory portion If the capacity of a memory portion continually increases the memory portion is being continually use...

Страница 42: ...ics for jobs display system internal kernel memory pool Displays memory block usage statistics follow job job id Displays the stack of a job Troubleshooting other issues Layer 2 forwarding failure Symptom Layer 2 packet loss occurs when the switch forwards packets to a peer on the same network segment and in the same VLAN ...

Страница 43: ... IP Packet Frame Type PKTFMT_ETHNT_2 Hardware Address 00e0 fc00 5139 Description Twenty FiveGigE1 0 17 Interface Bandwidth 100000kbps Loopback is not set Incoming error packets No Yes Yes Troubleshoot the problem End No Yes Layer 2 packet loss Packets filtered by ACLs or QoS policies Troubleshoot the problem Port blocked No Troubleshoot the problem Yes Port misconfigurations No Locate and modify m...

Страница 44: ...s 0 aborts ignored parity errors Output total 0 packets 0 bytes 0 unicasts 0 broadcasts 0 multicasts 0 pauses Output normal 0 packets bytes 0 unicasts 0 broadcasts 0 multicasts 0 pauses Output 0 output errors underruns buffer failures 0 aborts 0 deferred 0 collisions 0 late collisions 0 lost carrier no carrier a If the statistics are not zero the following issues might have occurred Inconsistent c...

Страница 45: ...down WGE1 0 13 0 21 xe20 no no 0xd 1 down WGE1 0 14 0 22 xe21 no no 0xe 1 down WGE1 0 15 0 23 xe22 no no 0xf 1 down WGE1 0 16 0 24 xe23 no no 0x10 1 down WGE1 0 17 0 25 xe24 no no 0x11 1 down WGE1 0 18 0 26 xe25 no no 0x12 1 down WGE1 0 19 0 27 xe26 no no 0x13 1 down WGE1 0 20 0 28 xe27 no no 0x14 1 down More The output shows that Twenty FiveGigE 1 0 17 is associated with chip port xe24 Execute th...

Страница 46: ...o pass the portal authentication will be dropped by the port Use the display portal interface command to display the portal configuration information of the specified VLAN interface Determine whether the portal authentication can be disabled based on the network conditions To disable the portal authentication at Layer 3 use the undo portal server server name command in VLAN interface view of the V...

Страница 47: ...ake sure the committed information rate CIR and the committed burst size CBS are appropriate To adjust the CIR and CBS values execute the qos lr inbound outbound cir committed information rate cbs committed burst size command Storm suppression Execute the display this command in Ethernet interface view to display the configuration of storm suppression Storm suppression includes broadcast suppressi...

Страница 48: ...nterface Displays information about the QoS policies applied to an interface or all interfaces display qos queue statistics interface Displays traffic statistics collected for an interface on a per queue basis display qos vlan policy Displays information about QoS policies applied to VLANs display smart link group Displays information about the specified or all smart link groups display stp Displa...

Страница 49: ...t the same execute the reset arp command to clear the incorrect ARP entries Then the switch can learn ARP entries again Alternatively you can execute the arp static command to configure static ARP entries 3 Verify that route entries are correct a Execute the display ip routing table command to verify that route entries are correct If incorrect route entries exist troubleshoot the protocol that lea...

Страница 50: ...he switch cannot send or receive protocol packets Troubleshooting flowchart Figure 21 Troubleshooting protocol flapping Solution To resolve the issue 1 Verify that Layer 2 is operating correctly as described in Layer 2 forwarding failure 2 Verify that Layer 3 is operating correctly as described in Layer 3 forwarding failure Layer 2 packet loss occurs Layer 3 packet loss occurs Troubleshoot the pro...

Страница 51: ...00 S On SMAC 8 7 IPV4_MC_RIP 0 0 0 150 D On SMAC 8 8 IPV4_BC_RIP 0 0 0 150 D On SMAC 8 9 MCAST_NTP 0 0 0 100 S On SMAC 8 10 BCAST_NTP 0 0 0 100 S On SMAC 8 11 IPV4_MC_OSPF_5 0 0 0 100 S On SMAC 8 12 IPV4_MC_OSPF_6 0 0 0 100 S On SMAC 8 13 IPV4_UC_OSPF 0 0 0 200 S On SMAC 8 14 IPV4_MC_PIM 0 0 0 100 S On SMAC 8 15 IPV4_UC_PIM 0 0 0 100 S On SMAC 8 16 IPV4_IGMP 0 0 0 100 S On SMAC 8 17 LDP 0 0 0 100 ...

Страница 52: ...t to Power Prefer Wind Direction Power to Port b If the airflow direction of the fan tray is not as configured use the fan prefer direction slot slot number power to port port to power command to reconfigure the airflow direction Sysname fan prefer direction slot 1 port to power c Verify the modification Sysname display fan Slot 1 FAN 1 State Normal Wind Direction Port to Power Fan tray failure Di...

Страница 53: ...r the fan tray is damaged If the fan tray status is fault replace the fan tray 3 If the issue persists contact H3C Support Related commands This section lists the commands that you might use for troubleshooting fans Command Description display fan Displays fan operating status fan prefer direction slot slot number power to port port to power Specifies the preferred airflow direction ...

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