Configuration using Web Based Management and Command Line Interface
4.5 The Switch menu
SCALANCE X-300 / X-400
Configuration Manual, 10/2014, C79000-G8976-C187-22
135
In the central part of the screen, you can enable or disable the following protocols for
managing the data traffic:
GMRP is an acronym for GARP Multicast Registration Protocol. GARP itself stands for
Generic Attribute Registration Protocol. GMRP is a mechanism for efficient forwarding of
multicast frames.
With a GARP Information Declaration (GID), a node can register with the IE switch as
recipient for a multicast address. An IE switch sends this registration to its ports in the form
of the GARP Information Propagation (GIP) frame. As a result, this address is also known to
other switches and they send multicast frames for this address only to ports that have
received a registration for this address. This reduces the load caused by multicast frames in
the entire network and for nodes that are not registered for a multicast.
If you enable GMRP, GMRP registrations are entered in the multicast filter table for all ports
and generated automatically.
If GMRP is not enabled
● an IE switch does not evaluate received GMRP frames.
● an IE switch does not send its own GMRP frames.
IGMP is an acronym for Internet Group Management Protocol. It is an enhancement of the
IP protocol and allows the assignment of IP addresses to multicast groups.
An IE switch evaluates IGMP packets from multicast recipients and stores the information
obtained in its multicast filter table. Filter entries resulting from IGMP Configuration are
indicated as such in the filter table.
If you enable IGMP snooping, IGMP entries are included in the filter table and IGMP packets
are forwarded accordingly.
IGMPv1, IGMPv2 and IGMPv3 are supported.
Note
GMRP and IGMP cannot operate at the same time.
GVRP is an acronym for GARP VLAN Registration Protocol.
If you enable GVRP, the VLAN to which a port belongs can be set dynamically with GVRP.
Note
GMRP and MSTP cannot be operated at the same time.
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