Alloy Computer Products GSM-16T2SFP 사용자 설명서

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GSM Series User Manual 
66 
Alloy Computer Products Pty Ltd Copyright ©2006
 
3-10-4. Tag Rule 
 
 
Fig. 3-40 
Function name: 
Tag Rule 
Function description: 
The administrator can apply a VID to each port of the switch; the valid range of the VID is 
from 1 to 4094. Ingress filtering rules can also be applied to each port, there are two 
rules that can be applied Rule 1 “Forward only packets with VID matching this ports 
configured VID” and Rule 2 “Drop untagged frame”. The role of each port can also be 
selected as Access, Trunk and Hybrid.   
Parameters description: 
 
Port No: 
 
 
Select the port you wish to apply a VLAN Tag Rule. 
 
PVID: 
PVID range is 1 – 4094. Before you configure a PVID you must create a Tag-
based VLAN with the VID matching the PVID you are about to create. For 
example, if port x receives an untagged packet, the switch will apply the PVID of 
port x to this packet, the packet will then be forwarded as a tagged packet with 
the VID you have created. 
 
Rule 1: 
Forward only packets with VID matching this ports configured VID. You can apply 
Rule 1 as a way to filter unwanted traffic. In Rule 1, a given port checks if the 
given port is a member of the VLAN on which the received packet belongs to, to 
determine whether the packet will be forwarded or not. For example, if port 1 
receives a tagged packet with VID=100, and Rule 1 is enabled, the switch will 
check if port 1 is a member of VLAN100. If yes, the received packet is forwarded: 
otherwise, the received packet is dropped.