Static Vlans - HP ProCurve 5300xl Series Management Manual

Static VLANs

In a network having a switch mesh domain and multiple static VLANs config­
ured, all static VLANs must be configured on each meshed switch, even if no
ports on the switch are assigned to any VLAN. (The switch mesh is a member
of all static VLANs configured on the switches in the mesh.)
When static VLANs are configured, the mesh is seen as a single entity by each
VLAN. All ports in the mesh domain are members of all VLANs and can be
used to forward traffic for any VLAN. However, the non-mesh ports on edge
switches that allow traffic to move between the mesh and non-meshed devices
belong to specific VLANs and do not allow packets originating in a specific
VLAN to enter non-meshed devices that do not belong to that same VLAN. (It
is necessary to use a router to communicate between VLANs.) For example,
in the following illustration, traffic from host A entering the switch mesh can
only exit the mesh at the port for hosts B and E. Traffic from host A for any
other host (such as C or D) will be dropped because only hosts B and E are in
the same VLAN as host A.
(Red VLAN)
A
Red VLAN
Blue VLAN
(Red VLAN)
All ports inside
Figure 7-20. VLAN Operation with a Switch Mesh Domain
Red Blue
D (Blue VLAN)
VLAN VLAN
Red VLAN Red VLAN
Blue VLAN
Blue VLAN
Red Blue
E
VLAN VLAN
the mesh domain are members of all VLANs.
Switch Meshing
Operating Notes for Switch Meshing
(Red VLAN)
B
C (Blue VLAN)
Switch Mesh Domain
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