Hi,
1- Attached simple diagram
2- Here is switches configuration
EX_stack_servers
admin@System_VCx2_3300-Storage> show lacp interfaces
Aggregated interface: ae5
LACP state: Role Exp Def Dist Col Syn Aggr Timeout Activity
xe-1/1/0 FUP Actor No No Yes Yes Yes Yes Fast Active
xe-1/1/0 FUP Partner No No Yes Yes Yes Yes Fast Active
xe-0/1/0 FUP Actor No No Yes Yes Yes Yes Fast Active
xe-0/1/0 FUP Partner No No Yes Yes Yes Yes Fast Active
LACP protocol: Receive State Transmit State Mux State
xe-1/1/0 Current Fast periodic Collecting distributing
xe-0/1/0 Current Fast periodic Collecting distributing
admin@System_VCx2_3300-Storage> show configuration interfaces ae5 | display set
set interfaces ae5 aggregated-ether-options lacp active
set interfaces ae5 unit 0 family ethernet-switching port-mode trunk
set interfaces ae5 unit 0 family ethernet-switching vlan members all
admin@System_VCx2_3300-Storage> show configuration interfaces xe-0/1/0 | display set
set interfaces xe-0/1/0 ether-options 802.3ad lacp force-up
set interfaces xe-0/1/0 ether-options 802.3ad ae5
admin@System_VCx2_3300-Storage> show configuration interfaces xe-1/1/0 | display set
set interfaces xe-1/1/0 ether-options 802.3ad lacp force-up
set interfaces xe-1/1/0 ether-options 802.3ad ae5
admin@System_VCx2_3300-Storage> show virtual-chassis
Preprovisioned Virtual Chassis
Virtual Chassis ID: 1111.af7e.1111
Virtual Chassis Mode: Enabled
Mstr Mixed Neighbor List
Member ID Status Serial No Model prio Role Mode ID Interface
0 (FPC 0) Prsnt GD0213123456 ex3300-24t 129 Backup NA 1 vcp-255/1/2
1 vcp-255/1/3
1 (FPC 1) Prsnt GD0213123456 ex3300-24t 129 Master* NA 0 vcp-255/1/2
0 vcp-255/1/3
EX_stack_BB
admin@BB_VC-3300> show lacp interfaces
Aggregated interface: ae5
LACP state: Role Exp Def Dist Col Syn Aggr Timeout Activity
xe-3/1/0 FUP Actor No No Yes Yes Yes Yes Fast Active
xe-3/1/0 FUP Partner No No Yes Yes Yes Yes Fast Active
xe-1/1/1 FUP Actor No No Yes Yes Yes Yes Fast Active
xe-1/1/1 FUP Partner No No Yes Yes Yes Yes Fast Active
LACP protocol: Receive State Transmit State Mux State
xe-3/1/0 Current Fast periodic Collecting distributing
xe-1/1/1 Current Fast periodic Collecting distributing
admin@BB_VC-3300> show configuration interfaces ae5 | display set
set interfaces ae5 aggregated-ether-options lacp active
set interfaces ae5 unit 0 family ethernet-switching port-mode trunk
set interfaces ae5 unit 0 family ethernet-switching vlan members all
admin@BB_VC-3300> show configuration interfaces xe-3/1/0 | display set
set interfaces xe-3/1/0 ether-options 802.3ad lacp force-up
set interfaces xe-3/1/0 ether-options 802.3ad ae5
admin@BB_VC-3300> show configuration interfaces xe-1/1/1 | display set
set interfaces xe-1/1/1 ether-options 802.3ad lacp force-up
set interfaces xe-1/1/1 ether-options 802.3ad ae5
admin@BB_VC-3300> show virtual-chassis
Preprovisioned Virtual Chassis
Virtual Chassis ID: 2222.565b.2222
Virtual Chassis Mode: Enabled
Mstr Mixed Neighbor List
Member ID Status Serial No Model prio Role Mode ID Interface
0 (FPC 0) Prsnt GB0212123456 ex3300-48p 129 Backup NA 1 vcp-255/1/2
3 vcp-255/1/3
1 (FPC 1) Prsnt GE0212123456 ex3300-24p 129 Master* NA 2 vcp-255/1/2
0 vcp-255/1/3
2 (FPC 2) Prsnt GB0212123456 ex3300-48p 0 Linecard NA 3 vcp-255/1/2
1 vcp-255/1/3
3 (FPC 3) Prsnt GB0212123456 ex3300-48p 0 Linecard NA 0 vcp-255/1/2
2 vcp-255/1/3
The issue :
If VM on vlan id 1 establish a backup/sync with VM on vlan id 2 , we notice that bandwith/speed is 1,5Giga/min
If we change the vlan id for VM from vlan id 2 to the same vlan for VM on vlan id 1 , So both VM servers will be on the same vlan , and establish backup/sync between both, we notice bandwith/speed is 3.5Giga/min .
I think this is because that when both on same vlan , the traffic does not go through the LAG into the BB switches . But when both on different vlans it goes through the LAG interfaces to the BB switches . But why the LAG should interrupt the bandwidth / speed ?