Filter
Top Products
Description Behavior at Peer Up Behavior During Run
Time
Action to Take
Spanning tree mismatch
at global level
All VLT port channels go
down on both VLT
peers. A syslog error
message is generated.
No traffic is passed on
the port channels.
A one-time
informational syslog
message is generated.
During run time, a loop
may occur as long as
the mismatch lasts.
To resolve, enable RSTP
on both VLT peers.
Spanning tree mismatch
at port level
A syslog error message
is generated.
A one-time
informational syslog
message is generated.
Correct the spanning
tree configuration on
the ports.
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.
A syslog error message
is generated.
The VLT peer does not
boot up. The VLTi is
forced to a down state.
A syslog error message
is generated.
Verify the unit ID is
correct on both VLT
peers. Unit ID numbers
must be sequential on
peer units; for example,
if Peer 1 is unit ID “0”,
Peer 2 unit ID must be
“1’.
Version ID mismatch A syslog error message
and an SNMP trap are
generated.
A syslog error message
and an SNMP trap are
generated.
Verify the Dell
Networking OS software
versions on the VLT
peers is compatible. For
more information, refer
to the Release Notes for
this release.
VLT LAG ID is not
configured on one VLT
peer
A syslog error message
is generated. The peer
with the VLT configured
remains active.
A syslog error message
is generated. The peer
with the VLT configured
remains active.
Verify the VLT LAG ID is
configured correctly on
both VLT peers.
VLT LAG ID mismatch
The VLT port channel is
brought down.
A syslog error message
is generated.
The VLT port channel is
brought down.
A syslog error message
is generated.
Perform a mismatch
check after the VLT peer
is established.
Virtual Link Trunking (VLT)
983