4.04.2012

VEM Control and Packet Uplink Interfaces

Need to find out which uplink your VEM is sending control or packet information out of?  When using VPC-HM, you can use the following command to determine this information: "vemcmd show port-old" (run from the ESX CLI), or "module vem X execute vemcmd show port-old" (run from the VSM).  The updated "vemcmd show port" output only shows VM interfaces and omits the control/packet interfaces.

LTL 10 is your Control interface
LTL 12 is your Packet interface
LTL 49 and above will be your Virtual Machine Interfaces

If you look under the SG_ID column you'll see the sub group ID of each VMNIC.  From the output below, Control LTL 10 has a Pinned_SGID of 1.  LTL 18 is vmnic1 which is the member interface for SGID 1.  Likewise, Packet LTL 12 has a Pinned_SGID of 0.  LTL 17 is vmnic0, which is the member interface for SGID 0.

~ # vemcmd show port-old
  LTL    IfIndex   Vlan    Bndl  SG_ID Pinned_SGID  Type  Admin State  CBL Mode   Name
    6          0      1 T     0     32          32  VIRT     UP    UP    1  Trunk vns
    8          0   3969       0     32          32  VIRT     UP    UP    1 Access
    9          0   3969       0     32          32  VIRT     UP    UP    1 Access
   10          0   3001       0     32           1  VIRT     UP    UP    1 Access
   11          0   3968       0     32          32  VIRT     UP    UP    1 Access
   12          0   3002       0     32           0  VIRT     UP    UP    1 Access
   13          0      1       0     32          32  VIRT     UP    UP    0 Access
   14          0   3971       0     32          32  VIRT     UP    UP    1 Access
   15          0   3971       0     32          32  VIRT     UP    UP    1 Access
   16          0      1 T     0     32          32  VIRT     UP    UP    1  Trunk arp
   17   2500c000      1 T   305      0          32  PHYS     UP    UP    1  Trunk vmnic0
   18   2500c040      1 T   305      1          32  PHYS     UP    UP    1  Trunk vmnic1
   49   1c000180   3002       0     32           0  VIRT     UP    UP    1 Access n1000v-1.eth2
   50   1c000170     19       0     32           1  VIRT     UP    UP    1 Access n1000v-1.eth1
   51   1c000120   3001       0     32           0  VIRT     UP    UP    1 Access n1000v-1.eth0
   52   1c000060     19       0     32           1  VIRT     UP    UP    1 Access Windows.eth0
   53   1c000030     19       0     32           0  VIRT     UP    UP    1 Access vmk3
  305   16000000      1 T     0     32          32  CHAN     UP    UP    1  Trunk

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