Everything I see here looks fine. I don't see any discrepancies in the out of show vpc brief. Is port channel 1 in an up status on the X1052? Are VLANs 1716 and 1717 set to T(tagged) on the X1052?  Can you test using General mode on the N4032? # interface port-channel 1# description "To-Mgmt"# switchport mode general# switchport general allowed vlan add 1# switchport general allowed vlan add 1716,1717 tagged Here is an MLAG white paper: [URL] It includes several configuration examples that you can use to help double check your configurations. Page 50 begins the MLAG with VLT example.
Hello, I have this topology [IMAGE]  Can not get working VTLi and MLAG togheter. Try to we working only up conectivity between X1052 and N4032F's but there is no traffic allowed. I suspect maybe is a spanning tree denied forwarding, but can not determine it. Here are te configs: =======N4032F-B interface Te1/0/21 channel-group 1 mode active description "To-Mgmt" spanning-tree portfast bpdufilter default spanning-tree guard loop switchport mode trunk exit interface Te1/0/23 channel-group 10 mode active description "To-SWFOA-23" spanning-tree guard loop switchport mode trunk exit               !                  interface Te1/0/24 channel-group 10 mode active description "To-SWFOA-24" spanning-tree guard loop switchport mode trunk exit               !  interface port-channel 1 description "To-Mgmt" spanning-tree portfast bpdufilter default switchport mode trunk vpc 1              exit interface port-channel 10 description "PeerLink" switchport mode trunk vpc peer-link exit feature vpc vpc domain 10 role priority 255 peer-keepalive enable peer-keepalive destination 172.18.190.4 source 172.18.190.5 peer detection enable exit  =========4032F-A interface Te1/0/21 channel-group 1 mode active description "To-Mgmt" spanning-tree portfast bpdufilter default switchport mode trunk exit ! interface Te1/0/23 channel-group 10 mode active description "To-SWFOB-23" switchport mode trunk exit ! interface Te1/0/24 channel-group 10 mode active description "To-SWFOB-24" switchport mode trunk exit ! interface port-channel 1 description "To-Mgmt" spanning-tree disable spanning-tree portfast bpdufilter default switchport mode trunk vpc 1 exit ! interface port-channel 10 description "PeerLink" switchport mode trunk vpc peer-link exit ! feature vpc vpc domain 10      role priority 1 peer-keepalive enable peer-keepalive destination 172.18.190.5 source 172.18.190.4 peer detection enable exit  =======X1052 interface tengigabitethernet1/0/1  description To-SWFO-A  channel-group 1 mode auto  switchport mode trunk ! interface tengigabitethernet1/0/2  description To-SWFO-B  channel-group 1 mode auto  switchport mode trunk ======end configs Spannint tree is RSTP in all switchs. vpc seems good: ================ SWFO-A#show vpc brief   VPC Domain ID.................................. 10 VPC admin status............................... Enabled Keep-alive admin status........................ Enabled VPC operational status......................... Enabled Self role...................................... Primary Peer role...................................... Secondary Peer detection admin status.................... Peer detected, VPC Operational Operational VPC MAC............................ ECF4.BBF4.240A Operational VPC system priority................ 32767  Peer-Link details -----------------  Interface...................................... Po10 Peer-link admin status......................... Enabled Peer-link STP admin status..................... Enabled Configured VLANs............................... 1,1716,1717 Egress tagged VLANs............................ 1716,1717  VPC Details ----------- VPC id# 1 ----------- Interface...................................... Po1 Configured VLANs............................... 1,1716,1717 VPC interface state............................ Active  Local Members        Status -----------------    ------ Te1/0/21             Up  Peer Members         Status ----------------     ------ Te1/0/21             Up ===============  there is no traffic from a vlan in X1052 to N4032F  Really appreciate your help!
MLAG + VTLi + STP No traffic