https://community.extremenetworks.com/t5/extremeswitching-exos-switch/trunking-black-diamond-8810-and-cisco-3750/m-p/56940#M16759 When you create a Trunk port on a Cisco device, that port is assigned every tag in the VLAN spectrum 1-4096 (if I'm not mistaken), allowing every configured VLAN on that device to send traffic across that Trunk .<BR /> <BR /> XOS follows a more fine tuned approach: If you assign a single port multiple 802.1Q tags, it becomes a trunk port for only those two VLANs. And as your network grows, you can assign more VLAN tags to that port allowing it to ONLY send traffic from sanctioned VLANs. In terms of how to implement this, AlexandrP has outlined this in the comment above. I hope this helps Fri, 26 Jun 2015 13:54:00 GMT Kawawa 2015-06-26T13:54:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/trunking-black-diamond-8810-and-cisco-3750/m-p/56938#M16757 hii techies... i have one black diamond 8810.. i wanna do trunking with cisco 3750 . please help. As in cisco i can juz creat a trunk port and give it a mgmt ip. viz switchport mode trun and switch trunk native vlan 100 and will give a ip to interface vlan 100 but how to creat such on the black diamond..as not free hand on this Thu, 25 Jun 2015 22:58:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/trunking-black-diamond-8810-and-cisco-3750/m-p/56938#M16757 Nitesh_Sharma 2015-06-25T22:58:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/trunking-black-diamond-8810-and-cisco-3750/m-p/56939#M16758 Hi!<BR /> <BR /> create vlan XXX tag 100<BR /> configure vlan XXX ipaddress <XXX.YYY.ZZZ.VVV><BR /> configure vlan XXX add port YY tagged<BR /> <BR /> You mean this?</XXX.YYY.ZZZ.VVV> Fri, 26 Jun 2015 00:06:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/trunking-black-diamond-8810-and-cisco-3750/m-p/56939#M16758 Alexandr_P 2015-06-26T00:06:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/trunking-black-diamond-8810-and-cisco-3750/m-p/56940#M16759 When you create a Trunk port on a Cisco device, that port is assigned every tag in the VLAN spectrum 1-4096 (if I'm not mistaken), allowing every configured VLAN on that device to send traffic across that Trunk .<BR /> <BR /> XOS follows a more fine tuned approach: If you assign a single port multiple 802.1Q tags, it becomes a trunk port for only those two VLANs. And as your network grows, you can assign more VLAN tags to that port allowing it to ONLY send traffic from sanctioned VLANs. In terms of how to implement this, AlexandrP has outlined this in the comment above. I hope this helps Fri, 26 Jun 2015 13:54:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/trunking-black-diamond-8810-and-cisco-3750/m-p/56940#M16759 Kawawa 2015-06-26T13:54:00Z