Typical Applications
3-10
9124-A2-GH30-00
June 1999 - Preliminary
PVC
Multiplexing Application
When FrameSaver units are at each end of the circuit, the FrameSaver unit
provides the ability to multiplex data of multiple DLCIs onto a single network
DLCI. This feature is referred to as PVC multiplexing. PVC multiplexing allows
PVC diagnostic tests to be run without disrupting data, and uses the following
network configuration.
Frame
Relay
Router
Frame
Relay
Network
FrameSaver
Unit
FrameSaver
Unit
98-15865
FR
FR
FR
FR
PVCs Contain
Multiplexed
Management
EDLCIs and
Customer Data
FR = Frame Relay
Physical Connection
PVC Connection
Frame
Relay
Router
SNMP
NMS
Management
Data
Customer
Data
The example shows frame relay data coming in over Port-1, with the frames
being multiplexed onto a single network connection. PVCs are aggregated in the
same manner.
This sharing of PVCs (i.e., multiplexing user DLCIs with management
data/frames with user data/frames) is a proprietary method that is patented.
When using this method:
H
The first EDLCI, EDLCI 0, is used for the Port-1 data, and no overhead is
associated with the multiplexing for EDLCI 0. Subsequent DLCIs have two
bytes of overhead associated with them.
H
A diagnostic EDLCI, which is transparent to the user, is also created on each
multiplexed DLCI on the network interface. This allows nondisruptive PVC
diagnostic tests to be run, as well as end-to-end communication of network
latency, topology, and data delivery information.
H
A management EDLCI, EDLCI 2, is created to route management data
through the network interface. This allows for nondisruptive multiplexing of
management data with user data and provides router-independent
management of remote units.
To use this feature, the network DLCI Type must be Multiplexed.
Содержание FrameSaver SLV 9124
Страница 1: ...FrameSaverr SLV 9124 TECHNICAL REFERENCE Document No 9124 A2 GH30 00 June 1999 PRELIMINARY DRAFT ...
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