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Nexus 1000v L3 mode and native vlan problem

Hello.

Please, help us.

We have some ESXi hosts and VMkernel0 (management) interface of the ESXi hosts in VLAN 521.

VSM in L3 mode and all VSM interfaces in one Port-Profile in VLAN 1.

Uplinks interfaces connected to Nexus 2000, and on both side configured trunks.

If we use trunks on uplink interfaces with native vlan set to 521 on both side (N1K & N2K) then VEM lost connection to VSM.

If we use native vlan other than 521 (vlan where VMK interface of the ESXi hosts reside) then all OK!

Remark: on all switches we use "vlan dot1q tag native"

Why? We need native vlan 521 for ESXi Stateless configuration and PXE boot.

ESXi hosts have IP addresses in VLAN 521 (192.168.6.x/24)

VSM management interface in VLAN 1 (192.168.4.x/24)

Below working configuration. If we changed native vlan to 521 on both switches (N1000v and upstream N2000) then communication VSM-VEM fail.

Config N1K:

vlan dot1Q tag native

svs-domain

  domain id 100

  control vlan 1

  packet vlan 1

  svs mode L3 interface mgmt0

interface mgmt0

  ip address 192.168.4.6/24

port-profile type ethernet Serv-uplinks

  vmware port-group

  switchport mode trunk

  switchport trunk allowed vlan 1,22,340,521,525,1282-1283

  switchport trunk native vlan 340

  channel-group auto mode on

  no shutdown

  system vlan 1,521,525

  state enabled

port-profile type vethernet ESX-vmk-mg

  capability l3control

  vmware port-group

  port-binding static auto

  switchport mode access

  switchport access vlan 521

  no shutdown

  system vlan 521

  max-ports 64

  state enabled

port-profile type vethernet Nexus-VSM-mg

  vmware port-group

  port-binding static auto

  switchport mode access

  switchport access vlan 1

  no shutdown

  system vlan 1

  max-ports 8

  state enabled

Config N2K:

vlan dot1Q tag native

interface port-channel212

  switchport

  switchport mode trunk

  switchport trunk native vlan 340

  switchport trunk allowed vlan 1,22,340,521,525,1282-1283

  flowcontrol send on

interface Ethernet101/1/10

  switchport

  switchport mode trunk

  switchport trunk native vlan 340

  switchport trunk allowed vlan 1,22,340,521,525,1282-1283

  spanning-tree port type edge trunk

  channel-group 212

  no shutdown

interface Ethernet101/1/11

  switchport

  switchport mode trunk

  switchport trunk native vlan 340

  switchport trunk allowed vlan 1,22,340,521,525,1282-1283

  spanning-tree port type edge trunk

  channel-group 212

  no shutdown

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