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8000-A2-GB21-20
A maximally configured HotWire DSLAM system will have 18 DSL cards with
each DSL card having its four ports connected to a HotWire RTU for a total of
72 modem ports. Each modem can connect via a hub to 32 active end-user
systems to support a total of 2304 users.
NOTE:
The following illustration does not apply to the 5171 PC NIC and 5216 RTU.
The 5171 PC NIC and 5216 RTU are for single end-user system
configurations only.
WAN
NSP1
Router
or VLAN
Switch
NSP2
.
.
.
NSP16
* This RTU can be a 5170 RTU,
5246 RTU or 5446 RTU
Additionally, by setting up structured subnets behind each HotWire RTU,
hundreds of active end-user systems can be supported by each 5446 RTU
instead of 32. Careful network traffic analysis must be performed to determine if
very large networks will have acceptable response times. For information on how
to set up structured subnets, see Chapter 5,
NOTE:
Usually a user is active only in one service domain at a time. However, if the
end user's system can be multihomed, it may be possible to be active in
more than one NSP domain at a time. A multihomed system is a system
with connections to two or more logical networks, which may be assigned to
one or more physical networks.
November 1997
Components of the Network Model
10BaseT
DSL/POTS
DSL
Card
IP Address Allocation
End-user
System 1
10BaseT
LAN
HotWire
End-user
RTU*
System 2
.
.
.
End-user
System 32
97-15463-01
.
4-3
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