02-23-2024 02:02 AM
Hi,
we are upgrading our old network. We still have a SG200-50P running with some VLAN to seperate the network from each other.
Now I added a new CBS350-48-P4X. I connected this with copper cable from port 49 (old switch) to port 47 (new switch).
I created VLAN 21,22,23,120. Those are the same as at the old switch.
When I go to a port, e.g. Port 2, I put this as tagged to VLAN1, I can still ping my devices at VLAN 120. This should not work, but it does work.
Can anybody give me a hand?
Cheers
Heinz
Solved! Go to Solution.
02-23-2024 02:11 AM - edited 02-23-2024 02:32 AM
Old Switch configuration uplink port 49:
Interface settings: Trunk, Administrative PVID:1
Port to VLAN: tagged
Port VLAN Membership:
Administrative VLANs: | 1UP, 21T, 22T, 23T, 120T |
Operational VLANs: | 1UP, 21T, 22T, 23T, 120T |
New Switch configuration uplink port 47
Interface settings: Trunk
Port to VLAN: TAGGED
Port VLAN Membership:
Administrative VLANs: | 1T, 21-23T, 120T, 2-20I, 24-119I, 121-4094I |
Operational VLANs: | 1T, 21-23T, 120T |
So my Notebook is connected to the new switch on port 2 VLAN1 ( I guess ). And I still can ping my other PC at VLAN120. This should not work, because it should be seperated. When I am at the old switch - it is seperated.
Configuration at the new switch is:
VLAN Membership (active): Native VLAN ID:1
Tagged VLANs: All VLANs
Port VLAN Membership Details
Administrative VLANs: | 21-23T, 120T, 1U, 2-20I, 24-119I, 121-4094I |
Operational VLANs: | 1U, 21-23T, 120T |
02-23-2024 02:11 AM - edited 02-23-2024 02:32 AM
Old Switch configuration uplink port 49:
Interface settings: Trunk, Administrative PVID:1
Port to VLAN: tagged
Port VLAN Membership:
Administrative VLANs: | 1UP, 21T, 22T, 23T, 120T |
Operational VLANs: | 1UP, 21T, 22T, 23T, 120T |
New Switch configuration uplink port 47
Interface settings: Trunk
Port to VLAN: TAGGED
Port VLAN Membership:
Administrative VLANs: | 1T, 21-23T, 120T, 2-20I, 24-119I, 121-4094I |
Operational VLANs: | 1T, 21-23T, 120T |
So my Notebook is connected to the new switch on port 2 VLAN1 ( I guess ). And I still can ping my other PC at VLAN120. This should not work, because it should be seperated. When I am at the old switch - it is seperated.
Configuration at the new switch is:
VLAN Membership (active): Native VLAN ID:1
Tagged VLANs: All VLANs
Port VLAN Membership Details
Administrative VLANs: | 21-23T, 120T, 1U, 2-20I, 24-119I, 121-4094I |
Operational VLANs: | 1U, 21-23T, 120T |
02-23-2024 03:43 AM
thank you
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