Samsung OfficeServ 7100 series System Description page 74

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Multicast Routing
Internet Group Management Protocol (IGMP)

Internet Group Management Protocol (IGMP) is a protocol that manages the multicast
group operating at one Ethernet segment. It controls the segment so that a user can
subscribe or secede as a member of the specific multicast group.
 Distance Vector Multicast Routing Protocol (DVMRP)
Distance Vector Multicast Routing Protocol (DVMRP) is a protocol for supporting the
transmission of the multicast data in a network. This protocol sends the multicast data
in a format of unicast packet, and the packets are reassembled into multicast data at the
destination. DVMRP can be operated in various formats of networks including
Ethernet, and even can be operated via the routers that the multicast is not supported
with.
 Protocol Independent Multicast-Sparse Mode (PIM-SM)
PIM-SM is designed in order to route multicast packets into multicast groups and in
order to construct the allocation tree efficiently at WAN, by which is optimized in the
environment where the data stream occur in many places.
Routing between VLAN Groups
The communication between the VLAN groups through the routing is possible.
HTBQ/Bandwidth on Demand (BoD)
The queuing process is differentially performed according to the level table where the
routing process priority for a data server is defined.
RTP Priority
The Real-Time Transport Protocol (RTP) packet is a VoIP media packet. The queuing
process for the RTP packet is prior to that for other data pack, which helps to maintain the
tone quality. This function is useful when using the VoIP function in the network where the
VoIP packet that should be processed in real time and other packets for the general office
work are mixed processed.
IP-ToS Process
This function checks the Type of Service (ToS) field of the IP header and processes it
according to priority of the corresponding routing in the data server. This function
reproduces the ToS field flowing into the data server, performs the routing process first of
all, and heightens the process priority in the next HOP.
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