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19

Troubleshooting ports

This section provides troubleshooting information for common port problems.

A fiber port fails to come up

Symptom

A fiber port fails to come up.

Troubleshooting flowchart

Figure 5 Troubleshooting link up failure on a fiber port

Solution

To resolve the problem:

1.

Verify that the speed and duplex mode of the local port match the speed and duplex mode of
the peer port:

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Содержание S5150-EI Series

Страница 1: ...2 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 Technologi...

Страница 2: ...mptom 7 Solution 7 Related commands 8 Troubleshooting ACL 9 ACL application failure with an error message 9 Symptom 9 Solution 9 ACL application failure without an error message 9 Symptom 9 Troublesho...

Страница 3: ...Solution 24 Related commands 27 Layer 3 forwarding failure 28 Symptom 28 Troubleshooting flowchart 28 Solution 29 Related commands 29 Protocol flapping 29 Symptom 29 Troubleshooting flowchart 30 Solut...

Страница 4: ...Status of the LEDs Measures 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...

Страница 5: ...mon 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...

Страница 6: ...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...

Страница 7: ...r gz 524288 KB total 107944 KB free To display operating statistics on the monitor terminal enter n at the prompt The output from this command varies by software version Save or display diagnostic inf...

Страница 8: ...d switch reboot removable power modules and fixed fan trays To troubleshoot transceiver modules and ports see Troubleshooting ports Unexpected switch reboot Symptom The switch reboots unexpectedly whe...

Страница 9: ...e is in Absent state go to step 2 If the power module is in Fault state go to step 3 2 Remove and reinstall the power module to make sure the power module is installed correctly Then execute the displ...

Страница 10: ...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 execu...

Страница 11: ...8 Related commands This section lists the commands that you might use for troubleshooting fan trays Command Description display fan Displays fan tray operating status information...

Страница 12: ...n 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 resources are exhau...

Страница 13: ...qos policy interface VLAN display qos vlan policy Global display qos policy global Control plane display qos policy control plane slot slot number b If the QoS policy does not contain a class behavio...

Страница 14: ...correctly reconfigure it If the ACL is configured correctly go to step 3 3 If the problem persists contact H3C Support Related commands This section lists the commands that you might use for troublesh...

Страница 15: ...12 Troubleshooting IRF This section provides troubleshooting information for common problems with IRF IRF fabric establishment failure Symptom An IRF fabric cannot be established...

Страница 16: ...o Yes Yes No Yes Resolved No Yes Yes No Yes No Yes You cannot add devices to the IRF fabric Yes No Member ID unique Modify IRF port bindings or reconnect physical ports Number of members fewer than th...

Страница 17: ...e SFP ports verify that the transceiver modules or cables for IRF connections are labeled with 10Gbps or SFP If you use transceiver modules and fibers for IRF connections make sure the transceiver mod...

Страница 18: ...that each IRF port has a minimum of one physical port in up state display irf Displays IRF fabric information including the member ID role priority bridge MAC address and description of each IRF membe...

Страница 19: ...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...

Страница 20: ...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...

Страница 21: ...ence 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 command...

Страница 22: ...lems A fiber port fails to come up Symptom A fiber port fails to come up Troubleshooting flowchart Figure 5 Troubleshooting link up failure on a fiber port Solution To resolve the problem 1 Verify tha...

Страница 23: ...at 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...

Страница 24: ...ort 2 Replace the network cable with a new one to verify that the network cable is in good condition 3 Replace the local port with a new one to verify that the local port is operating correctly 4 Repl...

Страница 25: ...c information Displays or saves running status data for multiple feature modules display interface brief Displays brief interface information display transceiver alarm interface Displays alarms presen...

Страница 26: ...Layer 2 packet loss failure 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...

Страница 27: ...owing failures might occur Interface hardware failure To test such a failure connect the cable that is connected to the local port to a correctly operating port for example Port A with the same config...

Страница 28: ...output shows that Smartrate Ethernet 1 0 1 is associated with chip port xe1 Execute the bcm slot 1 chip 0 show c xe1 command to check the RDBGC and TDBGC fields for Rx and Tx dropped packet statistics...

Страница 29: ...nd If the ip source binding command or ip verify source command is configured but the packets match no entry further troubleshoot the problem based on the way the binding entries are created The porta...

Страница 30: ...hole MAC address entry execute the undo mac address blackhole mac address vlan vlan id command Rate limit Execute the display qos lr interface command to display the rate limit configuration on the po...

Страница 31: ...ation about global QoS policies display qos policy interface Displays information about the QoS policies applied to an interface or all interfaces display qos queue interface Displays traffic statisti...

Страница 32: ...arn ARP entries again 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...

Страница 33: ...debug rxtx softcar slot 1 ID Type RcvPps Rcv_All DisPkt_All Pps Dyn Swi Hash ACLmax 0 ROOT 0 0 0 300 S On SMAC 0 1 ISIS 0 0 0 200 D On SMAC 8 2 ESIS 0 0 0 100 S On SMAC 8 3 CLNP 0 0 0 100 S On SMAC 8...

Страница 34: ...witch use the PoE power according to the PoE power supply scheme For information about the power supply compatibility see H3C S5150 EI Switch Series Installation Guide 2 Execute the following commands...

Страница 35: ...rect Nonstandard PD detection by the PSE is enabled Sysname display poe pse PSE ID 4 PSE Slot No 1 PSE SubSlot No 0 PSE Model LSW124POED M PSE Power Enabled enabled PSE Power Priority PSE Current Powe...

Страница 36: ...PoE interface execute the poe max power command to configure the maximum power with higher wattage supply 3 If the problem persists contact H3C Support Related commands This section lists the command...

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