Advanced Traffic Management Guide K/KA/KB.15.15

Table 8 Controlling VLAN behavior on ports with static VLANs
Static VLAN Options—Per VLAN Specified on Each Port
1
Per-Port
"Unknown
VLAN" (GVRP)
configuration
Port Activity: Forbid (Per VLAN)Port Activity: Auto (Per VLAN)Port Activity: Tagged or
Untagged (Per VLAN)
The port:The port:The port:Learn (the
Default)
••• Will not become a member of the
specified VLAN.
Will become a member of
specified VLAN if it receives
advertisements for specified
VLAN from another device.
Belongs to specified
VLAN.
• •Advertises specified
VLAN.
Will not advertise specified VLAN.
• Can become a member of other
dynamic VLANs for which it
receives advertisements.
• Will advertise specified
VLAN.
• Can become a member
of dynamic VLANs for
which it receives
advertisements.
• Can become a member of
other, dynamic VLANs for
which it receives
advertisements.
• Will advertise a dynamic VLAN
that has at least one other port on
the same switch as a member.
• Advertises dynamic
VLANs that have at least
one other port (on the
same switch) as a
member.
• Will advertise a dynamic
VLAN that has at least one
other port (on the same
switch) as a member.
The port:The port:The port:Block
••• Will not become a member of this
VLAN.
Will become a member of
specified VLAN if it receives
advertisements for this VLAN.
Belongs to the specified
VLAN.
• •Advertises this VLAN. Will ignore GVRP PDUs.
• Will advertise this VLAN.
• •Will not become a
member of new
dynamic VLANs for
which it receives
advertisements.
Will not join any dynamic VLANs.
• Will not become a member
of new dynamic VLANs for
which it receives
advertisements.
• Will not advertise VLANs.
• •Will advertise dynamic
VLANs that have at least
one other port as a
member.
Will advertise dynamic
VLANs that have at least one
other port (on the same
switch) as a member.
The port:The port:The port:Disable
••• Will not become a member of this
VLAN.
Will not become a member
of the specified VLAN.
Is a member of the
specified VLAN.
• ••Will ignore GVRP PDUs. Will ignore GVRP PDUs.Will ignore GVRP PDUs.
•• •Will not join any dynamic
VLANs.
Will not join any
advertised VLANs.
Will not join any dynamic VLANs.
• Will not advertise VLANs.
•• Will not advertise VLANs.Will not advertise
VLANs.
1
Each port of the switch must be a Tagged or Untagged member of at least one VLAN. Thus, any port configured for
GVRP to Learn or Block will generate and forward advertisements for static VLAN(s) configured on the switch and also
for dynamic VLANs the switch learns on other ports.
As the preceding table indicates, when you enable GVRP, a port that has a Tagged or Untagged
static VLAN has the option for both generating advertisements and dynamically joining other
VLANs.
About GVRP 75