Greetings everybody !
I'm running out of ideas with my problem, so I hope someone can help me deal with it 
I got a VMWare infrastructure running under vSphere 6.0 with 3 clustered ESXi, connected to 2 HP switches.
On my third ESX, I have 2 virtual machines each connected to both VLAN 1 and VLAN 100 (2 virtual network card per VM)
VLAN 1 is my DATA network
VLAN 100 is my VOICE network
On VLAN1, everything works, all VM and switches are able to ping each others.
On VLAN100 :
- The first HP switch can ping the first VM but not the second
- The second HP switch can ping the second VM but not the first
Each VM can ping between each other
Each ESx has 2 physical network cards with 4 ports per card.
2 ports of each physical network card are connected to each switch.
Here's the network scheme : http://imageshack.com/a/img921/776/dCIk0s.jpg
Here's the vSphere screens :
http://imageshack.com/a/img921/5618/u7AH9j.jpg
http://imagizer.imageshack.us/a/img924/9088/A6ZT9d.png
Here's the 2 HP switches configuration :
HP1 :
; J9726A Configuration Editor; Created on release #WB.15.12.0015
; Ver #05:18.41.ff.35.0d:9b
hostname "SWITCH-LAN1"
module 1 type j9726a
trunk 23-24 trk1 trunk
ip default-gateway 192.168.1.253
snmp-server community "public" unrestricted
oobm
ip address dhcp-bootp
exit
vlan 1
name "DEFAULT_VLAN"
no untagged 18-19
untagged 1-17,20,A1-A2,B1-B2,Trk1
tagged 21-22
ip address 192.168.1.189 255.255.255.0
exit
vlan 100
name "VOICE"
untagged 18-19
tagged 1-17,20-22
no ip address
exit
spanning-tree
spanning-tree Trk1 priority 4
spanning-tree force-version rstp-operation
HP2 :
; J9726A Configuration Editor; Created on release #WB.15.12.0015
; Ver #05:18.41.ff.35.0d:9b
hostname "SWITCH-LAN2"
module 1 type j9726a
trunk 23-24 trk2 trunk
ip default-gateway 192.168.1.253
snmp-server community "public" unrestricted
oobm
ip address dhcp-bootp
exit
vlan 1
name "DEFAULT_VLAN"
no untagged 20
untagged 1-19,A1-A2,B1-B2,Trk2
tagged 21-22
ip address 192.168.1.190 255.255.255.0
exit
vlan 100
name "VOICE"
untagged 20
tagged 1-19,21-22
no ip address
exit
spanning-tree
spanning-tree Trk2 priority 4
spanning-tree force-version rstp-operation
Thank's for your help
