PRS5G Datasheet, PDF (2/4 Pages) Applied Micro Circuits Corporation – Switch Fabric

Product Brief
PB PRS 5G-20G / v0.5 / 05-24-2004
PRS 5G and PRS 20G
Switch Fabric
advanced IP-based services, for
example, merging data and voice over
Quality-of-Service (QoS)-aware
networks, implementing virtual private
networks (VPNs), or deploying security
applications closer to the end users.
PRS 5G Switch Fabric for 5-20
Gbps Meshed Switch Systems (No
Central Switch Fabric)
The PRS 5G (PRS C48X) switch fabric
device provides 2.5 Gbps of full-duplex
minimum aggregate user bandwidth. It
allows smooth growth of
smaller-capacity systems by the simple
addition of PRS 5G-based blades,
without any central switch fabric. Eight
PRS 5G devices can be linked together
in a meshed topology to enable the
design of systems with up to eight user
blades, each with a PRS 5G device
attaching a network processor such as
the AMCC nP3700 Integrated Network
Processor / Traffic Manager (see
Figure 1 and Figure 2).
More compact blades, housing
multiple network processors, can be
implemented with PRS 20G devices.
The PRS 20G can also operate in a
meshed configuration with the PRS 5G
to provide 10-Gbps uplink capability in
smaller-capacity systems (see Figure 3).
The PRS 5G blades can be designed
to preserve the possibility of adding a
Product Overview ^{central PRS switch, when needed to}
extend the system capacity. This is
possible because the PRS 5G
alternately operates as a PRS C48X
switch fabric interface providing queuing
manager functionality for PRS core
switches. As a result, the same PRS 5G
blades can be used in both meshed and
centralized switch fabric topologies, thus
optimizing OEM and user investments in
PRS 5G-based blades.
A standard-based AdvancedTCA^TM
chassis can be used in the design of
PRS systems that can evolve from a few
tens of Gbps to 100 or 120 Gbps of
full-duplex user bandwidth.
Backplane
PRS 5G
1
PRS 5G
2
PRS 5G
3
PRS 5G
4
PRS 5G
5
PRS 5G
6
PRS 5G
7
PRS 5G
8
CSIX PL3 CSIX PL3 CSIX PL3 CSIX PL3 CSIX PL3 CSIX PL3 CSIX PL3 CSIX PL3
4G / OC-48 4G / OC-48 4G / OC-48 4G / OC-48 4G / OC-48 4G / OC-48 4G / OC-48 4G / OC-48
Network
Network
Network
Network
Network
Network
Network
Network
Processor Processor Processor Processor Processor Processor Processor Processor
PHY
PHY
PHY
PHY
PHY
PHY
PHY
PHY
Figure 1: 8x8 Meshed Adapters Through Passive Backplane
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PRS 5G
1
CSIX PL3
4G / OC-48
Network
Processor
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PRS 5G
2
CSIX PL3
4G / OC-48
Network
Processor
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PRS 5G
3
CSIX PL3
4G / OC-48
Network
Processor
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PRS 5G
4
CSIX PL3
4G / OC-48
Network
Processor
PHY
PHY
PHY
PHY
Figure 2: 4x4 Meshed Adapters Redundancy Through
Passive Backplane
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PRS 5G
1
CSIX PL3
4G / OC-48
Network
Processor
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PRS 5G
2
CSIX PL3
4G / OC-48
Network
Processor
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PRS 5G
3
CSIX PL3
4G / OC-48
Network
Processor
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PRS 20G
CSIX PL3
10G / OC-192
Network
Processor
PHY
PHY
PHY
PHY
Figure 3: Meshed Adapters Through Passive Backplane
with Uplink Aggregation
2
Empowering Intelligent Networks