Troubleshooting Ports; Link Up Failure On A Port; Symptom; Troubleshooting Flowchart - H3C s5800 series Troubleshooting Manual

Troubleshooting ports

This section provides troubleshooting information for common problems with ports.

Link up failure on a port

Symptom

A port cannot go up when the port is connected to another port.

Troubleshooting flowchart

Figure 4 Troubleshooting link up failure on a port
A port failed to go
Physically connected?
Cable is correct or transceiver
module matches wavelength?
Subcard is operating correctly
if the interface is on a subcard?
Enable internal loopback
testing to examine the physical
Contact H3C Support

Solution

To resolve the problem:
up
No
Yes
Shut down?
No
No
Yes
No
Yes
port
Check the port
connection
Yes
undo shutdown
Replace the cable
or fiber
Install the subcard
again or replace a
subcard
13
Yes
Resolved?
No
Yes
Resolved?
No
Yes
Resolved?
No
Yes
Resolved?
No
End