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H3C S6520-SI Series Troubleshooting Guide
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39
Troubleshooting other issues
Layer 2 forwarding failure
Symptom
Layer 2 packet loss occurs when the swit
ch forw
ards packets to a peer on the sam
e network
segment and in the same VLAN.
Troubleshooting flowchart
Figure 20 Troubleshooting Layer 2 packet loss failure
41
43
Table of Contents
Table of Contents
2
Introduction
4
General Guidelines
4
Collecting Log and Operating Information
5
Collecting Common Log Messages
5
Collecting Diagnostic Log Messages
6
Collecting Operating Statistics
6
Contacting Technical Support
8
Troubleshooting Hardware
8
Unexpected Switch Reboot
8
Symptom
8
Troubleshooting Flowchart
9
Solution
9
Operating Power Module Failure
10
Symptom
10
Troubleshooting Flowchart
10
Solution
10
Newly Installed Power Module Failure
11
Symptom
11
Troubleshooting Flowchart
11
Solution
11
Fan Tray Failure
12
Symptom
12
Troubleshooting Flowchart
12
Solution
12
Related Commands
13
Troubleshooting ACL
13
ACL Application Failure with an Error Message
13
Symptom
13
Troubleshooting Flowchart
14
Solution
14
ACL Application Failure Without an Error Message
14
Symptom
14
Troubleshooting Flowchart
15
Solution
15
Packet Loss or Forwarding Failure
16
Symptom
16
Troubleshooting Flowchart
16
Solution
17
Related Commands
18
Troubleshooting IRF
18
IRF Fabric Establishment Failure
19
Symptom
19
Troubleshooting Flowchart
19
Solution
20
Related Commands
21
Troubleshooting Ethernet Link Aggregation
22
Link Aggregation Failure
22
Symptom
22
Troubleshooting Flowchart
23
Solution
23
Related Commands
24
Troubleshooting Ports
25
Fiber Port Remains in down State
25
Symptom
25
Troubleshooting Flowchart
25
Solution
26
Copper Port Remains in down State
27
Symptom
27
Troubleshooting Flowchart
27
Solution
27
Non-H3C Transceiver Module
28
Symptom
28
Troubleshooting Flowchart
28
Solution
28
Transceiver Module Does Not Support Digital Diagnosis
29
Symptom
29
Troubleshooting Flowchart
30
Solution
30
Error Frames (for Example, CRC Errors) on a Port
31
Symptom
31
Troubleshooting Flowchart
31
Solution
31
Failure to Receive Packets
33
Symptom
33
Troubleshooting Flowchart
33
Solution
33
Failure to Send Packets
35
Symptom
35
Troubleshooting Flowchart
35
Solution
35
Related Commands
36
Troubleshooting System Management
37
High CPU Utilization
37
Symptom
37
Troubleshooting Flowchart
38
Solution
38
High Memory Utilization
40
Symptom
40
Troubleshooting Flowchart
40
Solution
40
Related Commands
41
Troubleshooting Other Issues
42
Layer 2 Forwarding Failure
42
Symptom
42
Troubleshooting Flowchart
42
Solution
43
Related Commands
45
Layer 3 Forwarding Failure
46
Symptom
46
Troubleshooting Flowchart
47
Solution
47
Related Commands
48
Protocol Flapping
48
Symptom
48
Troubleshooting Flowchart
48
Solution
48
VXLAN Configuration Failure
49
Symptom
49
Troubleshooting Flowchart
50
Solution
50
Other manuals for H3C S6520-SI Series
Installation Guide
90 pages
Command Reference
43 pages
4
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H3C S6520-SI Series Specifications
General
Brand
H3C
Model
S6520-SI Series
Category
Switch
Language
English
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