Description Behavior at Peer Up Behavior During Run
Time Action to Take
A syslog error message
is generated.
A syslog error message
is generated. 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 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.
VLT LAG VLAN
mismatch
A syslog error message
is generated.
A syslog error message
is generated.
Verify that the VLAN
configuration is same for
the VLT lags on both
peers.
Specifying VLT Nodes in a PVLAN
VLT enables redundancy without the implementation of Spanning Tree Protocol (STP), and provides a
loop-free network with optimal bandwidth utilization.
Because the VLT LAG interfaces are terminated on two different nodes, PVLAN configuration of VLT
VLANs and VLT LAGs are symmetrical and identical on both the VLT peers. PVLANs provide Layer 2
isolation between ports within the same VLAN. A PVLAN partitions a traditional VLAN into sub-domains
identified by a primary and secondary VLAN pair. With VLT being a Layer 2 redundancy mechanism,
support for configuration of VLT nodes in a PVLAN enables Layer 2 security functionalities. To achieve
maximum VLT resiliency, you should configure the PVLAN IDs and mappings to be identical on both the
VLT peer nodes.
The association of PVLAN with the VLT LAG must also be identical. After the VLT LAG is configured to be
a member of either the primary or secondary PVLAN (which is associated with the primary), ICL becomes
an automatic member of that PVLAN on both switches. This association helps the PVLAN data flow
received on one VLT peer for a VLT LAG to be transmitted on that VLT LAG from the peer.
You can associate either a VLT VLAN or a VLT LAG to a PVLAN. First configure the VLT interconnect (VLTi)
or a VLT LAG by using the peer-link port-channel id-number command or the VLT VLAN by using
996 Virtual Link Trunking (VLT)