HP ProCurve 5300xl Series Management Manual page 69

Blue
Server
Red
VLAN
4
3
Red
Server
Green
Server
Ports 1 - 6: Untagged
Port 7: Red VLAN Untagged
Figure 2-24. Example of Tagged and Untagged VLAN Port Assignments
Blue
VLAN
5 6
Switch
"X" 7
2
1
Green
VLAN
Green VLAN Tagged
■ In switch X:
• VLANs assigned to ports X1 - X6 can all be untagged because there is
only one VLAN assignment per port. Red VLAN traffic will go out only
the Red ports; Green VLAN traffic will go out only the Green ports,
and so on. Devices connected to these ports do not have to be 802.1Q-
compliant.
• However, because both the Red VLAN and the Green VLAN are
assigned to port X7, at least one of the VLANs must be tagged for this
port.
In switch Y:
■
• VLANs assigned to ports Y1 - Y4 can all be untagged because there is
only one VLAN assignment per port. Devices connected to these ports
do not have to be 802.1Q-compliant.
• Because both the Red VLAN and the Green VLAN are assigned to port
Y5, at least one of the VLANs must be tagged for this port.
In both switches: The ports on the link between the two switches must be
■
configured the same. As shown in figure 2-24 (above), the Red VLAN must
be untagged on port X7 and Y5 and the Green VLAN must be tagged on
port X7 and Y5, or vice-versa.
Red VLAN: Untagged
Green VLAN: Tagged
Static Virtual LANs (VLANs)
802.1Q VLAN Tagging
White
White
Server
VLAN
3
4
Switch
"Y"
5
1 2
Red
Green
VLAN
VLAN
Ports 1 - 4: Untagged
Port 5: Red VLAN Untagged
Green VLAN Tagged
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