Hello,

Old switches, I know.

I have four powerconnect 6248 switches.  Switch 1 and 2 are stacked via stacking cards, cabled xg1-xg2, xg2-xg1, and they work fine as one 96-port unit.  Both switches also have a 10gb cat8 dual port ethernet card as xg3 & xg4.

Switch 3 has a 10gb dual port card (slot 2) with xg3 to Switch 1, also on xg3.

Switch 4 has a 10gb dual port card (slot 2) with xg3 to Switch 1, on xg4.

The Switch 1 & 2 stack, and Switch 3 and Switch 4, have four vlans defined, assigned to the 100/1000 ports, and those work fine among themselves, but not through the 10gb cat8 connections.  Link lights are up, status shows as connected, but no data is flowing that I can tell.

1 vlan is no longer the management lan.  20 is.

10 vlan is public/DMZ network

20 vlan is private1 network

30 vlan is private2 network

40 vlan is private3 network

The firewall/router is external, not using routing on these switches.  Layer 2 only.  I am hoping to have 10 public vlan appear on all four switches.  Same for the other vlans.

The reason for this is switch 1 & 2 are in a rack together, switch 3 is 150' away, switch 4 is 70' the other direction.  That's why I'm trying to use trunking instead of stacking them all together.

using the web-gui, I set xg3 and xg4 on the appropriate switches to be a trunk, under the vlan heading.  I then went into the vlan port settings and tagged xg3 and xg4, again on the appropriate switch, for "U" for each of the defined vlans.

Nothing propogates between the switches.  Since vlan 20 is the management vlan as well as the private network, and all the switches (stack, two remote) have private addresses within the vlan 20 subnet, I should be able to ping from switch to switch.  Or a laptop plugged in any of the vlan 20 assigned g1-48 ports.

I can only ping the local switch.  Laptop cannot see the external router unless it's plugged into the same switch as the router.  I am apparently not passing any data through the 10gb slot 2 cards, switch to switch.

I read through the documentation numerous times, though trying to use the web interface rather than the cli.

Might anyone know how I should set these connections?  Any help would be greatly appreciated.