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Leave
All Timer: Once the LeaveAll Timer is set, the port with GVRP enabled can send
a LeaveAll message after the timer times out, so that other GARP
ports can re-register all the attribute information. After that, the
LeaveAll timer will start to begin a new cycle. The LeaveAll Timer
ranges from 1000 to 30000 centiseconds.
Join Timer: To guarantee the transmission of the Join messages, a GARP port
sends each Join message two times. The Join Timer is used to define
the interval between the two sending operations of each Join
message. The Join Timer ranges from 20 to 1000 centiseconds.
Leave Timer: Once the Leave Timer is set, the GARP port receiving a Leave
message will start its Leave timer, and deregister the attribute
information if it does not receive a Join message again before the
timer times out. The Leave Timer ranges from 60 to 3000
centiseconds.
LAG: Displays the LAG to which the port belongs.
Note:
LeaveAll Timer >= 10* Leave Timer, Leave Timer >= 2*Join Timer
Configuration Procedure:
Step Operation Description
1 Set the link type for port. Required. On the VLAN→802.1Q VLAN→Port Config
page, set the link type of the port to be TRUNK.
2 Enable GVRP function. Required. On the VLAN→GVRP page, enable GVRP
function.
3 Configure the registration
mode and the timers for the
port.
Required. On the VLAN→GVRP page, configure the
parameters of ports basing on actual applications.
6.9 Private VLAN
Private VLANs, designed to save VLAN resources of uplink devices and decrease broadcast, are
sets of VLAN pairs that share a common primary identifier. To guarantee user information security,
the ease with which to manage and account traffic for service providers, in campus network,
service providers usually require that each individual user is layer-2 separated. VLAN feature can
solve this problem. However, as stipulated by IEEE 802.1Q protocol, a device can only support up
to 4094 VLANs. If a service provider assigns one VLAN per user, the VLANs will be far from
enough; as a result, the number of users this service provider can support is limited.
Private VLAN adopts Layer 2 VLAN structure. A Private VLAN consists of a Primary VLAN and a
Secondary VLAN, providing a mechanism for achieving layer-2-separation between ports. For
uplink devices, all the packets received from the downstream are without VLAN tags. Uplink
devices need to identify Primary VLANs but not Secondary VLANs. Therefore, they can save
VLAN resources without considering the VLAN configuration in the lower layer. Meanwhile, the
service provider can assign each user an individual Secondary VLAN, so that users are separated
at the Layer 2 level.
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