Troubleshooting Flowchart; Solution - HP FlexFabric 12900 series Troubleshooting Manual

Troubleshooting flowchart

Figure 11 Troubleshooting link up failure on a port
A port failed to come up
Speed/duplex match
on local and peer port?
Network cable correct?
operating correctly?
operating correctly?
Contact the support

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:
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 command and the duplex command to set the speed and
duplex mode for the port.
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 (on a card of the same type, if possible) to verify that the
local port is operating correctly.
4. Replace the peer port with a new one (on a card of the same type, if possible) to verify that the peer
port is operating correctly.
5. If the problem persists, contact HP Support.
Yes
Yes
Local port
Yes
Peer port
Yes
No
Configure matching
speed/duplex
No
Replace network
cable
No
Replace local port
No
Replace peer port
35
Yes
Resolved?
No
Yes
Resolved?
No
Yes
Resolved?
No
Yes
Resolved?
No
End