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Static Virtual LANs (VLANs)
VLAN Operating Rules
1-14
match the protocol of
Figure 1-7. Untagged VLAN Operation
■
Tagged Packet Forwarding: If a port is a tagged member of the same
VLAN as an inbound, tagged packet received on that port, then the switch
forwards the packet to an outbound port on that VLAN. (To enable the
forwarding of tagged packets, any VLAN to which the port belongs as a
Port "X" receives
an inbound,
untagged Packet.
Is the
port an untagged
No
member of any
VLANs?
Yes
Does the
packet's protocol
Yes
an untagged VLAN
membership on
the port?
No
Is the
port a member
No
of an untagged,
port-based
VLAN?
Yes
Forward the
packet on the
port-based VLAN.
Drop the
packet.
Forward the
packet on that
protocol VLAN.
Drop the
packet.
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Troubleshooting
