MNS-BB
Software User Guide
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17.10
Displaying the Static and Dynamic VLANs Active on the Switch.
The
show-vlan
command lists all VLANs present in the switch.
Syntax: show-vlan
Specify the individual ports to handle advertisements
To set the state of the port
Syntax
:
set-ports port
=<port|list|range>
state
=<learn|block|disable>
Note
: Default state of the port is ‘disable’.
To set the forbid ports or VLAN’s
Syntax
:
set-forbid vlan
=<tag vlanid>
forbid
=<port number|list|range>
To see the forbidden Ports
Syntax
:
show-forbid
LE2425A(gvrp)#
show-port
1 | Block
2 | Block
3 | Disable
4 | Disable
5 | Disable
6 | Disable
7 | Disable
8 | Disable
9 | Disable
10 | Learn
11 | Learn
12 | Learn
13 | Disable
14 | Disable
15 | Disable
17.11
GVRP Operating Notes
A dynamic VLAN must be converted to a static VLAN before it can have an IP address.
Converting a dynamic VLAN to a static VLAN and then executing the
save
command saves the
VLAN in the startup-config file and makes it a permanent part of the switch’s VLAN configuration.
Within the same broadcast domain, a dynamic VLAN can pass through a device that is not GVRP-
aware. This is because a hub or a switch that is not GVRP-aware will flood the GVRP (multicast)
advertisement packets out all ports.
GVRP assigns dynamic VLANs as Tagged VLANs. To configure the VLAN as Untagged, you must
first convert it to a static VLAN.
Rebooting a switch on which a dynamic VLAN exists deletes that VLAN. However, the dynamic
VLAN re-appears after the reboot if GVRP is enabled and the switch again receives advertisements
for that VLAN through a port configured to add dynamic VLANs.
By receiving advertisements from other devices running GVRP, the switch learns of static VLANs on
those other devices and dynamically (automatically) creates tagged VLANs on the links to the