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Verify that the port channels used in the VLT domain are assigned to the same VLAN.
Dell_VLTpeer2# show vlan id 10
Codes: * - Default VLAN, G - GVRP VLANs, P - Primary, C - Community, I - Isolated
Q: U - Untagged, T - Tagged
x - Dot1x untagged, X - Dot1x tagged
G - GVRP tagged, M - Vlan-stack, H - Hyperpull tagged
NUM Status Description Q Ports
10 Active U Po110(Te 0/8)
T Po100(Te 0/3,4)
Verifying a Port-Channel Connection to a VLT Domain (From an Attached Access
Switch)
On an access device, verify the port-channel connection to a VLT domain.
Dell_TORswitch(conf)# show running-config interface port-channel 11
!
interface Port-channel 11
switchport
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 104. 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.
PMUX Mode of the IO Aggregator 821