Administrator Guide

channel-member TenGigE 0/1,2
no shutdown
Troubleshooting VLT
To help troubleshoot different VLT issues that may occur, use the following information.
NOTE: For information on VLT Failure mode timing and its impact, contact your Dell Networking
representative.
Table 67. Troubleshooting VLT
Description Behavior at Peer Up Behavior During Run
Time
Action to Take
Bandwidth monitoring A syslog error message
and an SNMP trap is
generated when the VLTi
bandwidth usage goes
above the 80% threshold
and when it drops below
80%.
A syslog error message
and an SNMP trap is
generated when the VLTi
bandwidth usage goes
above its threshold.
Depending on the traffic
that is received, the traffic
can be offloaded inVLTi.
Domain ID mismatch
The VLT peer does not
boot up. The VLTi is
forced to a down state.
A syslog error message
and an SNMP trap are
generated.
The VLT peer does not
boot up. The VLTi is
forced to a down state.
A syslog error message
and an SNMP trap are
generated.
Verify the domain ID
matches on both VLT
peers.
Dell Networking OS
Version mismatch
A syslog error message is
generated.
A syslog error message is
generated.
Follow the correct
upgrade procedure for
the unit with the
mismatched Dell
Networking OS version.
Remote VLT port channel
status
N/A N/A Use the show vlt
detail and show vlt
brief
commands to
view the VLT port
channel status
information.
System MAC mismatch A syslog error message
and an SNMP trap are
generated.
A syslog error message
and an SNMP trap are
generated.
Verify that the unit ID of
VLT peers is not the same
on both units and that
the MAC address is the
same on both units.
Unit ID mismatch
The VLT peer does not
boot up. The VLTi is
forced to a down state.
The VLT peer does not
boot up. The VLTi is
forced to a down state.
Verify the unit ID is
correct on both VLT
peers. Unit ID numbers
PMUX Mode of the IO Aggregator 921