
Industrial Managed
Ethernet Switch
User Manual
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2.9 GARP/GVRP/GMRP
This page includes three options,
GARP, GVRP, and GMRP
settings. Main concept of all three protocols are to
eliminate unnecessary network traffic by preventing transmission/retransmission to unregistered users
.
These
functions are enabled by default
.
They can only be disabled if no MAC addresses are added in the multicast group
table
.
GARP
:
G
eneric
A
ttribute
R
egistration
P
rotocol, previously called
A
ddress
R
egistration
P
rotocol, is a LAN protocol
that defines procedures by which end stations and switches can register and de
-
register attributes, such as network
identifiers or addresses with each other
.
Every end station and switch thus has a record, or list, of all the other end
stations and switches that can be reached at a given time
.
Specific rules are used to modify set of participants in
the network topology, or so called reachability tree
.
GVRP
:
G
ARP
V
LAN
R
egistration
P
rotocol
.
GVRP is similar to GARP, but work with VLAN instead of other network
identifiers
.
It provides a method to exchange VLAN configuration information with other devices, and conforms to
IEEE 802
.
1Q
.
GMRP
:
G
ARP
M
ulticast
R
egistration
P
rotocol provides a mechanism that allows bridges
)
or switches in this case
(
and end stations to dynamically register group membership information with the MACs of bridges
)
switches
(
attached to the same LAN segment and for that information to be disseminated across all bridges
)
switches
(
in the
Bridged
)
switched
(
LAN that supports extend filtering services
.
GMRP provides a constrained multicast flooding
facility similar to IGMP snooping
.
The difference is that IGMP is IP
-
based while GMRP is MAC
-
based
.
Figure 2.77 GARP
/
GVRP
/
GMRP Dropdown Menu