Pex Split; Symptom; Troubleshooting Flowchart; Solution - HPE FlexNetwork 10500 SERIES Troubleshooting Manual

b. Verify that the PEX physical interface connections and bindings meet the following
restrictions and guidelines:
− If ports in a group are used, you must use all or none of the ports for PEX links. The ports
− The breakout interfaces of a 40-GE port are considered to be in a port group. You must
− On PEXs, do not use both 10-GE and 40-GE ports to connect to the parent fabric.
− On PEXs, you must use transceiver modules for 40-GE ports on PEX links.
− On PEXs, the breakout interfaces of a 40-GE port cannot be connected to the parent
For more information about the binding and connection restrictions, see HPE FlexNetwork
10500 Switch Series Virtual Technologies Configuration Guide.
9. If the problem persists, contact Hewlett Packard Enterprise Support.

PEX split

Symptom

One or multiple PEXs split from an eIRF system.

Troubleshooting flowchart

Figure 25 Troubleshooting PEX split
PEXs left eIRF system
PEX physical interfaces
Device or module that
has PEX links rebooted?
Contact the support

Solution

To resolve the problem:
1. Verify that the PEX physical interfaces are operating correctly:
a. Execute the display trapbuffer command or view system logs to check for physical PEX
link down events that occurred around the split time.
b. If the split followed a PEX link down event, execute the display interface command to
check port statistics for CRC errors.
can be assigned to different PEX ports. To shut down or bring up any ports in the group,
you must make sure all the ports have been assigned to or removed from PEX ports.
follow the binding restrictions for port groups.
fabric.
Yes
down?
No
Yes
No
Identify the cause
and resolve the
problem
Identify the cause
and resolve the
problem
71
Yes
Resolved?
No
Yes
Resolved?
No
End