Viper SC+™ IP Router for Licensed Spectrum PN 001-5008-000 Rev. C
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VLAN UNTAGGING
Reception of a tagged Ethernet packet.
The Viper may receive a tagged Ethernet packet structured like the following. (The VLAN header is highlighted.)
Removing the VLAN header from the tagged Ethernet packet.
The Viper (when configured to remove VLAN tags) removes the VLAN header from the Ethernet packet and it becomes
an untagged Ethernet packet.
INTERFACE MODES
When VLAN is enabled (bridge mode only), Viper interfaces can operate in one of two modes: Untagged mode or
Tagged mode. (The RF interface is limited to Tagged mode.) Each interface (called a port) is assigned a VLAN ID called a
VLAN ID (VID) or Port VLAN ID (PVID).
UNTAGGED MODE
Ingress (incoming) and egress (exiting) packets on an interface operating in Untagged mode will typically be updated
using the following rules (available in the VLAN tab for the interface in the Viper Web Interface).
VID
is the VLAN ID contained in the packet.
PVID
is the Port VLAN ID (the VLAN ID associated with the interface and configured through the Web browser).
