GE Multilink ML3000 Instruction Manual page 192

VLAN REGISTRATION OVER GARP
Note
11–4
Table 11–1: Port settings for GVRP operations
Unknown
VLAN mode
Learn Enables the port to dynamically join any VLAN
for which it receives and advertisement, and
allows the port to forward the advertisement it
receives.
Block Prevents the port from dynamically joining a
VLAN that is not statically configured on the
switch. The port will still forward advertisements
that were received by the switch on other ports.
Block should typically be used on ports in
insecure networks where there is exposure to
attack - such as ports where intruders can
connect.
Disable Causes the port to ignore and drop all the
advertisements it receives from any source.
The command displays a switch's current GVRP configuration, including the
show-vlan
unknown VLANs.
show-vlan
A port must be enabled and configured to learn for it to be assigned to the dynamic VLAN.
To send advertisements, one or more tagged or untagged static VLANs must be configured
on one (or more) switches with GVRP enabled. The ML3000 software allows a dynamic
VLAN to be converted to a static VLAN with the
static vlan=<VID>
The
show vlan type=tag
Example 11-1 illustrates how to convert a dynamic VLAN into a static VLAN.
As the following table indicates, a port that has a tagged or untagged static VLAN has the
option for both generating advertisements and dynamically joining other VLANs.
Per-port "unknown
VLAN" (GVRP)
Tagged or untagged
configuration
Learn Generate advertisements.
Forward advertisements for
other VLANs. Receive
advertisements and
dynamically join any
advertised VLAN
Block Generate advertisements.
Forward advertisements
received from other ports to
other VLANs. Do not
dynamically join any
advertised VLAN
Disable Ignore GVRP and drop all
GVRP advertisements
MULTILINK ML3000 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
CHAPTER 11: VLAN REGISTRATION OVER GARP
Operations
static
command will display VID in case the VID is not known.
Table 11–2: GVRP options
Per-port static VLAN options
Receive
advertisements and
dynamically join any
advertised VLAN that
has the same VID as
the static VLAN
Receive
advertisements and
dynamically join any
advertised VLAN that
has the same VID
Ignore GVRP and
drop all GVRP
advertisements
command.
Auto Forbid
Do not allow the
port to become a
member of this
VLAN
Do not allow the
VLAN on this port
Do not allow the
VLAN on this port