Routers - Samsung OfficeServ 7200 General Description Manual

CHAPTER 4. OfficeServ 7200 Functions
The packets are categorized into emergent packets and non-emergent packets and
are then processed.
VLAN
The Virtual Local Area Network (VLAN) groups the related equipment by work
group according to the LAN operational policy regardless of the location of the
equipment. The VLAN also processes switching for the work groups. The VLAN
removes the effects of unnecessary broadcasting packets and configures a stable
switching subnet only for the corresponding group by separating and processing the
group in the VLAN.
Accordingly, the switch can provide the differentiated QoS services and the VLAN
can be configured based on the switch port and MAC address. The system auto-
matically configures the VLAN for the IP telephone, signal process gateway, media
gateway and UMS required for services, and performs the QoS process. The Of-
ficeServ 7200 provides 32 VLAN groups.
IGMP Snooping
The L2 switch (located in the lower layer of the IP router) can process IGMP
(Internet Group Management Protocol) messages to allow Multicasting to be used.
This is referred to as IGMP Snooping.
The IP layer multicast group information included in the IGMP message is reflected
in the MAC filtering database, its own switching database. The group information
is processed in the MAC multicast address format mapped with the IP multicast ad-
dress.
3.2

Routers

Network Interfaces
The OfficeServ 7200 provides the WAN1 and WAN2 network interfaces (which are
connected to the WAN through an Ethernet interface), the serial network connected
through the V.35 serial interface, and the LAN and DMZ network interfaces.
Static Routing
The OfficeServ 7200 configures a fixed routing table between each network inter-
face to process the static routing. In this case, the routing table cannot be dynami-
cally changed by the routing protocol, and specific routing services will be pro-
vided according to the pre-set routing policy.
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OfficeServ 7200 General Description Guide
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