Dell MXL 10GbE Reference Manual page 1344

Usage If you add an ICL or VLTi link as a member of a primary VLAN, the ICL becomes a
Information part of the primary VLAN and its associated secondary VLANs, similar to the
behavior for normal trunk ports. VLAN symmetricity is not validated if you associate
an ICL to a PVLAN. Similarly, if you dissociate an ICL from a PVLAN, although the
PVLAN symmetrictiy exists, ICL is removed from that PVLAN in such a case. The ICL
Status field denotes the type of the VLAN port of the VLTi link configured in a
PVLAN.
Example
Dell#Show vlt private-vlan vlan-id
Codes: C- Community, I – Isolated, V – Internally tagged, T –
tagged, * - VLT Pvlan
Primary
10
40
Dell#
1344
Secondary ICL Status
V (*)
20(C) V
30 (I) V
T
50(C) T
60 (I) T
Virtual Link Trunking (VLT)