VLAN Management
If you want VLAN 2 to pass frames to and from 
  | Port | Receive  | Ingress  | VLANs  | Untagset  | PVID  | 
  | Frame Type | Filter  | ||||
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  | All Frames | Disabled | V3  | No  | V2  | 
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  | V2  | Yes | 
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In this case, if port 1 receives an untagged frame, it assigns the frame to VLAN 2; for example, VLAN 2 will be flooded with frames from 
On the other hand, when port 1 transmits a frame from VLAN 2, it removes the tag. Since all the other ports accept untagged frames, those frames will flood VLAN 3 on both switches, and VLAN 4 on the originating switch.
To see the menus and steps to configure an ISL, see “Configuring Inter- Switch Links.”
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