PT-7728 User’s Manual Featured Functions
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Configuring GMRP

GMRP is a MAC-based multicast management protocol, whereas IGMP is IP-based. GMRP
provides a mechanism that allows bridges and end stations to register or un-register Group
membership information dynamically.
GMRP enable
Setting Description Factory Default
Enable/Disable This enables or disables the GMRP function for the port
listed in the Port column
Disable

GMRP Table

The PT-7728 displays the current active GMRP groups that were detected
Setting Description
Fixed Ports This multicast address is defined by static multicast.
Learned Ports This multicast address is learned by GMRP.
Using Bandwidth Management
In general, one host should not be allowed to occupy unlimited bandwidth, particularly when the
device malfunctions. For example, so-called “broadcast storms” could be caused by an incorrectly
configured topology, or a malfunctioning device. The PT-7728 not only prevents broadcast storms,
but can also be configured to a different ingress rate for all packets, giving administrators full
control of their limited bandwidth to prevent undesirable effects caused by unpredictable faults.