Samsung Ubigate iBG1000, Руководство пользователя

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Ubigate iBG1000 System Description/Ed.02
© SAMSUNG Electronics Co., Ltd.
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Multicast Routing
Protocols
Description
PIM-SM: Protocol
Independent Multicast-
Sparse Mode
Protocol Independent Multicast (PIM) protocol routes
multicast packets to multicast groups. PIM is protocol
independent because it can leverage whichever unicast
routing protocol is used to populate unicast routing table.
PIM-SM tries to send multicast data only to networks that
have active receivers. This is achieved by having a
common Rendezvous Point (RP) known to the senders
and receivers and forming shared trees from the RP to
the receivers.
DVMRP: Distance
Vector Multicast
Routing Protocol
Distance Vector Multicast Routing Protocol (DVMRP) is a
multicast routing protocol that provides an efficient
mechanism for connectionless datagram delivery to a
group of hosts across an inter-network. It is a distributed
protocol that dynamically generates IP multicast delivery
trees using a technique called Reverse Path Multicasting.
WAN Protocols
Ubigate iBG1000 can use four T1/E1 interfaces for providing WAN
connectivity. The protocols such as PPP, Frame Relay, and PPP over Frame
Relay (including their multilink variations) are supported in Ubigate iBG1000
to provide link layer connectivity. Also, the ISDN PRI is supported through
T1/E1 ports.
WAN Protocols Descriptions
Frame Relay Frame Relay (FR) is one of the widely used transport protocols
for Wide Area Networking (WAN) community. The objective of
FR is to provide WAN connectivity to both remote routers and
FR switches.
The protocol stack can provide both RFC 1490 based multi-
protocol encapsulation as well as PVC switching. Also, standard
frame relay congestion management procedures based on
frame relay traffic parameters-Bc, Be and CIR-(ingress policing,
egress shaping/rate limiting) are supported.
The following LMI types are supported-LMI Rev 1,
Stratacom/Cisco LMI, T1.617 Annex D, Q.933 Annex A and
alternately, the LMI can be disabled (None). Apart from these,
fragmentation and inverse ARP are supported over FR PVCs.