Cisco Cisco Packet Data Gateway (PDG)

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  Interfaces and Ports 
VLANs  ▀   
 
VPC-VSM System Administration Guide, StarOS Release 19  ▄  
 
   
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VLANs 
Virtual LANs (VLANs) allow two logically separated networks to use the same physical medium. VLAN segmentation, 
also called 802.1q tagging, works by appending a tag identifying the VLAN ID to each Ethernet frame. 
VLAN usage under KVM is an extension to bridge interface sharing. The difference lies in which interface participates 
in the bridge set. The physical interfaces (such as eth0, eth1) are bound to the bridge, which is used by each guest. These 
interfaces carry unmodified packets coming externally or being generated internally, with or without a VLAN ID tag. 
For information on how to create VLANs to handle specific packet types, see the VLANs chapter.