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H3C S6800 Series, Troubleshooting Manual

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H3C S6800 Series Troubleshooting Manual Download Page 9

 

1 

Troubleshooting hardware 

This section provides troubleshooting information for common hardware problems. 

 

 

NOTE: 

This section describes how to troubleshoot unexpected switch reboot, power module failure, and fan 
tray failure. To troubleshoot ports, see "

Troubleshooting ports

." 

 

Unexpected switch reboot 

Symptom 

The switch reboots unexpectedly when it is operating. 

Troubleshooting flowchart 

Figure 1 Troubleshooting unexpected switch reboot 

 

 

Summary of Contents for S6800 Series

Page 1: ...Copyright 2017 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 Technologie...

Page 2: ...art 5 Solution 5 Related commands 6 Troubleshooting ACL 7 ACL application failure with an error message 7 Symptom 7 Solution 7 ACL application failure without an error message 7 Symptom 7 Troubleshoot...

Page 3: ...31 EBGP or IBGP neighbor relationship setup failure 31 Symptom 31 Troubleshooting flowchart 31 Solution 31 ECMP forwarding failure 32 Symptom 32 Troubleshooting flowchart 33 Solution 33 VXLAN tunnel...

Page 4: ...iii Symptom 45 Troubleshooting flowchart 46 Solution 46 Related commands 47 Protocol flapping 47 Symptom 47 Troubleshooting flowchart 47 Solution 47...

Page 5: ...re Status of the LEDs Steps you have taken such as reconfiguration cable swapping and reboot Output from the commands executed during the troubleshooting process To ensure safety wear an ESD wrist str...

Page 6: ...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 logfile logfile log 2 Identify the l...

Page 7: ...through a network or management port instead of the console port if possible Network and management ports are faster than the console port Do not execute commands while operating statistics are being...

Page 8: ...gz Decompressing file flash diag_Sysname_20160101 000704 gz Done b View diagnostic information in the file Sysname more diag_Sysname_20160101 000704 display clock 23 49 53 UTC Tue 01 01 2016 More Con...

Page 9: ...section describes how to troubleshoot unexpected switch reboot power module failure and fan tray failure To troubleshoot ports see Troubleshooting ports Unexpected switch reboot Symptom The switch re...

Page 10: ...ch through the console port and restart the switch If BootWare reports that a CRC error has occurred or that no system software image is available perform the following steps a Use the BootWare menu t...

Page 11: ...connected to the power source securely If it has been disconnected from the power source connect the power source to it b Determine whether the power module is in high temperature If dust accumulatio...

Page 12: ...er module is installed securely Then execute the display power command 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...

Page 13: ...an command to display the operating states of the fan tray Sysname display fan Slot 1 Fan 1 State FanDirectionFault Airflow Direction Port to power Prefer Airflow Direction Power to port Fan 2 State F...

Page 14: ...an tray has changed to Normal state If the fan tray remains in Fault state replace the fan tray You must make sure the switch operating temperature is below 60 C 140 F while you replace the fan tray I...

Page 15: ...rce message Solution To resolve the problem 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...

Page 16: ...available in Release 24xx and Release 26xx Interface display qos accounting remarking policy interface The accounting and remarking keywords are available in Release 26xx VLAN display qos vlan policy...

Page 17: ...roubleshooting ACLs Command Description display acl Displays configuration and match statistics for ACLs display diagnostic information Displays operating statistics for multiple feature modules in th...

Page 18: ...s display qos vlan policy diagnosis Displays diagnostic information about QoS policies applied to VLANs display traffic classifier user defined Displays traffic class configuration display traffic beh...

Page 19: ...11 Troubleshooting IRF This section provides troubleshooting information for common problems with IRF IRF fabric setup failure Symptom An IRF fabric cannot be set up...

Page 20: ...s No Resolved No Yes No Yes End Are IRF port bindings or physical IRF connections correct Modify IRF port bindings or reconnect IRF physical interfaces Resolved No Yes Yes No Bring up the IRF links or...

Page 21: ...group LS 6800 2C LS 6800 4C LS 6800 32Q LS 6800 54QF LS 6800 54QT 3 Verify that the member ID of each member device is unique a Execute the display irf command to view the member ID of each member dev...

Page 22: ...ute the display irf link command and then check the Status field of the physical interfaces bound to the IRF port If the field displays DOWN or ADM administratively down for all the physical interface...

Page 23: ...for IPv6 routes with prefixes longer than 64 bits This command is available in Release 25xx and Release 26xx display hardware resource switch mode Displays table capacity mode information This comman...

Page 24: ...16 Command Description display system working mode Displays system operating mode information display version Displays system version information...

Page 25: ...tion This section provides troubleshooting information for common problems with Ethernet link aggregation Link aggregation failure Symptom Some member ports fail to be placed in Selected state and lin...

Page 26: ...lure Solution To resolve the problem 1 Verify that all physical connections are correct You can verify the physical connections against your network plan 2 Verify that all member ports are up a Execut...

Page 27: ...rence port 6 Verify that the number of member ports in the aggregation group does not exceed the configured maximum number of Selected ports a Execute the link aggregation selected port maximum comman...

Page 28: ...opper port Solution To resolve the problem No Yes No Yes No Yes Yes No No Yes Yes No No Yes Yes No No Yes Yes No A port failed to come up Contact the support Resolved Speed duplex match on local and p...

Page 29: ...eer port with a new port operating correctly If the port cannot come up you can determine that the local port fails Replace the local port with a new port operating correctly 4 Verify that the transce...

Page 30: ...port a Execute the display interface brief command to examine whether the speed and duplex mode of the port match the speed and duplex mode of the peer port b If they do not match use the speed comma...

Page 31: ...ule Sysname display transceiver interface fortygige 1 0 1 FortyGigE 1 0 1 transceiver information Transceiver Type 40G_BASE_LR4_QSFP_PLUS Connector Type LC Wavelength nm 1301 Transfer Distance km 10 S...

Page 32: ...oting flowchart Figure 11 Troubleshooting digital diagnosis failure on a transceiver module Solution To resolve the problem 1 Verify that the transceiver module is an H3C transceiver module Execute th...

Page 33: ...sceiver Type 40G_BASE_LR4_QSFP_PLUS Connector Type LC Wavelength nm 1301 Transfer Distance km 10 SMF Digital Diagnostic Monitoring YES Vendor Name H3C Ordering Name QSFP 40G LR4 WDM1300 3 If the probl...

Page 34: ...transceiver module of the same model that is operating correctly 3 Verify that the port configurations are correct a Execute the display interface brief command b Determine whether the speed and dupl...

Page 35: ...ional Use the reset counter interface command to clear the packet statistics of the port This command resets all packet counters to 0 so that you can view the statistics changes more clearly b Use the...

Page 36: ...the port is in an aggregation group use the display link aggregation summary command to verify that the status of the port is Selected If the status of the port is Unselected the port cannot send or...

Page 37: ...e correct The port configurations include the duplex mode speed port type and VLAN configurations of the ports at both ends of the link If configuration errors exist modify the port configurations If...

Page 38: ...nsmission path The troubleshooting process is beyond the scope of this document 6 If the problem persists contact H3C Support Related commands This section lists the commands that you might use for tr...

Page 39: ...Figure 15 Troubleshooting EBGP or IBGP neighbor relationship setup failure Solution To resolve the problem 1 Verify that BGP is correctly configured BGP settings correct Yes Yes No Modify BGP settings...

Page 40: ...rm threshold in the last 10 minutes c If the memory usage stays above the critical alarm threshold contact H3C Support 4 Perform the following tasks to collect information and contact H3C Support a Ex...

Page 41: ...etwork a Execute the display bgp l2vpn evpn route distinguisher route type ip prefix command b Verify that the device has routes to the destination network The routes must have the same RD and differe...

Page 42: ...splay ip routing table vpn instance command b Verify that the routes are all BGP routes c If some of the routes are from other protocols raise the priority of BGP routes by using the preference comman...

Page 43: ...t a manual VXLAN tunnel is not established between the IP addresses used for automatic tunnel establishment a Execute the display interface tunnel command to display tunnel information b If a manual V...

Page 44: ...duct codes LS 6800 2C LS 6800 32Q LS 6800 4C LS 6800 54QF LS 6800 54QT a Execute the display hardware resource vxlan command to view the VXLAN hardware resource mode b If the VXLAN hardware resource m...

Page 45: ...r peer group information for EVPN display bgp routing table ipv4 vpn instance Displays BGP IPv4 unicast routing information for VPN instances display current configuration configuration bgp Displays t...

Page 46: ...1 Identify the job that has a high CPU utilization Sysname system view Sysname probe Sysname probe display process cpu slot 1 CPU utilization in 5 secs 3 7 1 min 3 1 5 mins 3 8 JID 5Sec 1Min 5Min Name...

Page 47: ...PU usage of a job is less than 5 2 Display the job s stack In this example the job uses the ID of 14 Sysname probe follow job 14 Attaching to process 14 watchdog 3 Iteration 1 of 5 Kernel stack 804807...

Page 48: ...utilization Symptom The memory utilization is over 75 for more than 30 minutes on the following models with 2 GB of memory S6800 54QF LS 6800 54QF S6800 54QF LS 6800 54QF H1 S6800 54QT LS 6800 54QT S...

Page 49: ...26 1 1 1 ADJ4_Ext_Cachep 0 0 48 0 46 1 0 0 L2VFIB_LpwEntryCacheName 1 More Each value line shows the memory information for a slab The Number field shows the number of objects memory blocks allocated...

Page 50: ...ng 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 Troubleshooting flowchart Figure 21 Troubleshooting Layer 2 pa...

Page 51: ...ple Port A with the same configurations as the local port If Port A forwards traffic correctly you can determine that the hardware of the local port fails In this event you must replace the local port...

Page 52: ...bute configurations of the port are different from the configurations of the reference port Identify whether the port is blocked by smart link Use the display smart link group command to view the port...

Page 53: ...lly applied to an interface for packet filtering display portal interface Displays portal configuration and portal running state on an interface display qos lr interface Displays the rate limit config...

Page 54: ...RP entries b Execute the display mac address command to verify that the output interfaces in the MAC address entries and ARP entries are the same If the output interfaces are different execute the res...

Page 55: ...ting table information display mac address Display MAC address entries display fib Display FIB entries Protocol flapping Symptom The switch cannot send or receive protocol packets Troubleshooting flow...

Page 56: ...On SMAC 8 2 ESIS 0 0 0 100 S On SMAC 8 3 CLNP 0 0 0 100 S On SMAC 8 4 VRRP 0 0 0 1024 S On SMAC 8 5 UNKNOWN_IPV4MC 0 0 0 100 S On SMAC 8 6 UNKNOWN_IPV6MC 0 0 0 100 S On SMAC 8 7 IPV4_MC_RIP 0 0 0 150...

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