Samsung OfficeServ 7400 General Description Manual page 91

CHAPTER 4. OfficeServ 7400 Functions
Multicast Routing
Internet Group Management Protocol (IGMP)
Internet Group Management Protocol (IGMP) protocol manages the multicast group op-
erating 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) protocol supports the transmis-
sion of multicast data in a network. This protocol sends the multicast data in a unicast
packet format, and the packets are reassembled into multicast data at the destination.
DVMRP can be operated in various network formats, including Ethernet, and can even
be operated via routers that do not support multicast data.
Protocol Independent Multicast-Sparse Mode (PIM-SM)
PIM-SM is designed to route multicast packets into multicast groups and to construct
the allocation tree efficiently at WAN. This optimizes the number of data streams that
can occur in this environment.
Routing between VLAN Groups
Communication between VLAN groups is done through routing between the groups.
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 RTP (Real-Time Transport Protocol) packet is a VoIP media packet. The queuing proc-
ess for the RTP packet is prior to that for other data packets, which helps to maintain the
tone quality. This function is useful when using the VoIP function in a network where the
VoIP packet that should be processed in real time and other packets for general office work
are mixed.
IP-ToS Process
This function checks the ToS (Type of Service) field of the IP header and processes it ac-
cording 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.
4-6
© Samsung Business Communications