connecting 2 VLAN's on 2 Switches
Posted on 2010-09-08
I have a 3COM 4200G-48pt and a 3COM 4210G-48pt switch.
The 4200G has two VLANs :
* LAN (32 ports)
* SAN (16 ports)
both with untagged member ports. I assume that basically this is a "port VLAN" where I simply split up the switch. For the computers connected to the switch, it is as if I had 2 seperate switches.
There's no need for any traffic going between the two VLAN's.
Now I want to add the new 4210G to get redundancy.
I made the same configuration on the 4210G, with 2 VLAN's with untagged ports.
There are 2 links between each lan on each switch, so :
- Switch 1 - pt 48 --> Switch 2 - pt 48
- Switch 1 - pt 47 --> Switch 2 - pt 47
- Switch 1 - pt 1 --> Switch 2 - pt 1
- Switch 1 - pt 2 --> Switch 2 - pt 2
for some reason, the system works fine for the "SAN - VLAN" but not for the "LAN - VLAN"...
1° is this configuration OK?
2° any clues why it doesn't work with LAN-VLAN ?
3° we have 5 desks with 4 workstations each. Currently, each desk has a small 8 pt switch. Is it a good idea to connect those switches to each 3COM switch?
thanks in advance!