Huawei Quidway S3100 Series Operation Manual page 115

Operation Manual – GVRP
Quidway S3100 Series Ethernet Switches
attribute information to be registered can be propagated to all the switches in the same
switching network.
GARP has the following timers:
Hold: When a GARP entity receives a piece of registration information, it does not
send out a Join message immediately. Instead, to save the bandwidth resources,
it starts the Hold timer, puts all registration information it receives before the timer
times out into one Join message and sends out the message after the timer times
out.
Join: To transmit the Join messages reliably to other entities, a GARP entity sends
each Join message two times. The Join timer is used to define the interval
between the two sending operations of each Join message.
Leave: When a GARP entity expects to unregister a piece of attribute information,
it sends out a Leave message. Any GARP entity receiving this message starts its
Leave timer, and unregisters the attribute information if it does not receives a Join
message again before the timer times out.
LeaveAll: Once a GARP entity starts up, it starts the LeaveAll timer, and sends out
a LeaveALL message after the timer times out, so that other GARP entities can
re-register all the attribute information on this entity. After that, the entity restarts
the LeaveAll timer to begin a new cycle.
II. GVRP port registration mode
GVRP has the following port registration modes:
Normal: In this mode, both dynamic and manual creation, registration and
unregistration of VLANs are allowed.
Fixed: In this mode, when you create a static VLAN on a switch and the packets of
this VLAN are allowed to pass through the current port, the switch joins the current
port to this VLAN and adds a VLAN entry to the local GVRP database (a table
maintained by GVRP). But GVRP cannot learn dynamic VLAN through this port,
and the dynamic VLANs learned through other ports on this switch cannot be
pronounced through this port.
Forbidden: In this mode, all the VLANs except VLAN 1 are unregistered on the
port, and no other VLANs can be created or registered on the port.
III. GARP operation procedure
Through the mechanism of GARP, the configuration information on a GARP member
will be propagated to the whole switching network. A GARP can be a terminal
workstation or a bridge; it instructs other GARP member to register/unregister its
attribute information by declaration/recant, and register/unregister other GARP
member's attribute information according to other member's declaration/recant.
The protocol packets of GARP entity use specific multicast MAC addresses as their
destination MAC addresses. When receiving these packets, the switch distinguishes
Huawei Technologies Proprietary
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Chapter 1 GVRP Configuration