Eusso UTG7100-IP Series, User Manual

Page: 22 / 48

22
VLAN Settings
8.45. There are two parts for VLAN settings. One is to set for VoIP packets related to UTG7100-IP , and
the other is for the VLAN setting in the NAT Mode.
8.46. There are two kinds of destination packets coming to the WAN port, one is VoIP packets for
UTG7100-IP , and the other will go through the WAN port to the LAN port.
8.47. VLAN Packets: If you enable VLAN Packets and set the VID, User Priority, and CFI, then all the
incoming packets will be checked with the IP Address and the VID.
8.48. VID: Please set your VID in accordance with your service provider.
8.49. User Priority: Defines user priority with eight (2^3) priority levels. IEEE 802.1P defines the operation
for these 3 user priority bits. Usually, this will be defined by your service provider.
8.50. CFI: Canonical Format Indicator is always set to zero for Ethernet switches. CFI is used for
compatibility between Ethernet type network and Token Ring type network. If a frame received at an
Ethernet port has a CFI set to 1, then that frame should not be forwarded as it is to an untagged port.
When you enable the VLAN Packets and set the VID, User Priority, and CFI, then all the incoming
packets with UTG7100-IP IP address and the same VID will be accepted by UTG7100-IP . If the
incoming packets with UTG7100-IP IP address but different VID then the packets will be discarded
by UTG7100-IP . The Other incoming packets with different IP address will go through the WAN port
to the LAN port.
8.51. NAT VLAN Setting: When set in embedded NAT mode, the UTG7100-IP will filter out the wrong
incoming packets. You can separate the other devices connected behind the embedded NAT into 4
VLAN groups by assigning different VID for these 4 groups. UTG7100-IP will check the VID of the
incoming packets from ADSL modem. If the packet is not with UTG7100-IP IP address and the
right VID, or the VID is not of these 4 VIDs you set, then the packets will be discarded by
UTG7100-IP .