GVRP
(GARP VLAN Registration Protocol or Generic VLAN Registration Protocol) is a protocol that facilitates control of virtual local area networks (VLANs) within a larger network .
GVRP conforms to the IEEE 802.1Q specification, which defines a method of tagging frames with VLAN configuration data. This allows network devices to dynamically exchange VLAN configuration information with other devices.
GVRP in MAS and IAP
When you create an SSID on the IAP, you can also associate a VLAN tag with that SSID. The IAP can then share that VLAN tag with the Mobility Access Switch so that you do not need to pre-provision the VLAN ID on the MAS. This makes it easier to build out new SSIDs as needed without having to touch the wired infrastructure.
Config
!
interface-profile switching-profile "TRUNK"
switchport-mode trunk
!
interface-profile poe-profile "poe-factory-initial"
enable
!
interface-profile lldp-profile "lldp-factory-initial"
lldp transmit
lldp receive
med enable
!
interface-profile gvrp-profile "IAP-MAS"
enable
!
gvrp
enable
!
interface gigabitethernet "0/0/2"
gvrp-profile "IAP-MAS"
switching-profile "TRUNK"
lldp-profile "lldp-factory-initial"
poe-profile "poe-factory-initial"
!
Troubleshooting Output
show vlan
(host) #show vlan
VLAN CONFIGURATION
------------------
VLAN Description Ports
---- ----------- -----
1 VLAN0001 GE0/0/0-23 GE0/1/0-1
500 GVRP VLAN GE0/0/2
510 GVRP VLAN GE0/0/2
520 GVRP VLAN GE0/0/2
show gvrp interfaces
(host) # show gvrp interfaces
Interface GVRP info
-------------------
Interface State Registrar Mode
--------- ----- --------------
gigabitethernet0/0/2 Enabled Normal