The
Linley Wire
Independent
Analysis of the Networking-Silicon Industry
Volume 4, Issue 16
September 13, 2004 |
 |
Editor: Linley
Gwennap
Contributors: Bob Wheeler, Jag
Bolaria, Sanjay Iyer
In
This Issue
A
Guide to to Access Processors will
soon be available. Don't miss our detailed coverage of the newest
products and latest vendors in this dynamic market. For more information,
visit our web site.
Cavium
Announces Multicore MIPS Processor
Today, Cavium announced a family of integrated security processors
with throughput up to 10Gbps, based on a custom 600MHz 64-bit MIPS-compatible
core. The four family members range from the two-core CN3420, at
$125, to the 16-core CN3860, at $750. These are the first devices
to address a complete set of Layer 3–7 security functions
in a single chip. They are expected to sample in 1Q05.
With encryption increasingly becoming an integrated feature,
the move towards integrated multilayer security is an inevitable
one
for security-processor vendors—and a formidable challenge.
One problem is that processing upper-layer payloads requires a
full TCP proxy implementation, itself a daunting task at 10Gbps.
The other problem is that upper-layer content processing tends
to be very software-intensive and therefore difficult to accelerate.
Cavium has addressed both problems with Octeon: an array of 64-bit
MIPS cores executes high-level content-processing software while
specialized hardware coprocessors accelerate TCP termination,
cryptography, data compression, and regular-expression matching.
The flow-through
configuration makes it possible to string multiple Octeon’s
together, each performing a different task, to increase throughput.
Other security vendors are also moving towards multilayer security
processing. Layer N Networks was first to market with an SSL
processor that provides a full TCP proxy, but that chip has
no general-purpose
processors. Last year, Corrent announced a MIPS-based multilayer
security processor with only 200Mbps throughput. Hifn, which
acquired the IBM nPower NPU line, is likely to leverage that
technology
to create a multilayer security processor. Cavium’s Octeon,
however, is the first open-architecture effort, which will attract
customers with existing Pentium-based content-processing applications
seeking to deliver multi-Gigabit throughput.
Cavium’s
recent acquisition of MIPS-based communications processors from
Brecis provides code-compatible entry-level processors
in the Octeon line. Cavium has assembled the elements of
the broadest security-processor line in the industry; if the
company can deliver
the full breadth of Octeon, it will take security processing
to a new level. —SI
Complete
coverage of Cavium’s other security processors appears
in our report A Guide to Security and Content Processors.
Parama
Introduces 10Gbps ADM-on-a-Chip
Last week, Parama
Networks introduced a 10Gbps ADM on a chip (AoC), complementing
its earlier AoC that offer capacities of 160Gbps and 40Gbps. The newest device,
the PNII8010, allows Parama to address lower-speed Sonet services for applications
such as an OC-48 MSPP (multi-service provisioning platform) or a digital cross-connect.
Unlike current solutions that perform Sonet framing on the
line card, Parama’s
architecture centralizes much of the Sonet overhead processing and switching.
By moving the framer and switching function from multiple line cards to a switch
card, Parama plans to reduce the cost of an ADM by more than five times.
The PNI8010 includes two OC-48 line ports that would connect
to the Sonet ring and 8 OC-12 tributary ports that are
added or dropped towards the Sonet
network.
It integrates a 10G cross-connect for switching between the line ports
and tributary ports at a granularity of STS-1. The PNI8010
performs Sonet framing
functions
such as synchronization, scrambling, parity calculation, and error detection
on each port. Manufactured in UMC’s 0.13-micron technology, the PNI8010
is scheduled to sample later this month.
With
a power dissipation of 4W, this device should be attractive for
pizza-box configurations. The high integration of the
PNI8010 and lower system cost
make it attractive for new system designs. Although the PNI8010 reduces
system cost,
it locks the OEM’s system architecture for the product’s
lifecycle – typically
more than 5 years. Because OEMs are reluctant to make a startup the hinge
factor for their roadmap, Parama must develop a broader roadmap and a
strategy for
long-term viability to secure major designs wins. —JB Complete
coverage of Parama’s products appears in our upcoming report
A Guide to Next-Generation Sonet Silicon.
Marvell
Samples 24xGbE Switch With 10GbE Uplinks
Marvell
has extended its Prestera-DX line of Ethernet switches with devices
that support 10GbE uplinks and stacking. At the top of the line is the
new 98DX270, a 24xGbE switch with three integrated 10Gbps ports.
The uplink ports
operate in either a standard XAUI mode or in a proprietary stacking mode
that Marvell call’s HyperG.Stack (HGS). HGS mode adds
features such as cross-stack link aggregation, policing, and
VLANs. The
ports can also be configured to
run at 12Gbps in HGS mode, allowing two uplinks to service 24 GbE ports
without oversubscription. Thus, Marvell claims the DX270 is
a 60Gbps switch (24x1G+3x12G).
The company is also offering 24xGbE+2x10GbE (DX260) and 24xGbE-only (DX250)
versions of the new switch. Compared with Marvell’s existing 24xGbE switch chip (DX241), the new
chips offer many new features. Whereas the DX241 is an unmanaged design,
the DX250/260/270 add a management port with a choice of PCI or GMII/RGMII
interfaces.
A new integrated TCAM enables packet classification for QoS and security
functions such as DiffServ marking and ACLs. All three versions of the new
switch come
in a 37.5mm BGA package. The DX270 dissipates a maximum of 8W, while the
GbE-only DX250 requires only 5W. The DX250/260/270 are currently sampling;
pricing was
not announced.
With
its new Prestera devices, Marvell has upped the ante for stackable-switch
designs. Although Vitesse was first to offer a 24xGbE+2x10GbE switch
chip, that chip lacks integrated XAUI transceivers and does not offer
stacking
features. Meanwhile, Broadcom’s StrataXGS chips offer stacking
features but trail in integration with only 12 GbE ports plus one uplink
per device.
If Marvell
can quickly move its new DX chips to production, it will retake the
technology lead in an important and fiercely competitive segment. —BW
Complete
coverage of Marvell’s GbE-switch chips appears in our report
A Guide to Gigabit Ethernet Silicon.
News In Brief
EZchip has
announced two low-cost versions of its upcoming NP-2 network
processor. Whereas the high-end NP-2 is a 10Gbps full-duplex
device with integrated traffic manager, the NP-2/5 is a 5Gbps
full-duplex device suitable for 2xOC-48 line cards or various
GbE designs up to a maximum of 10xGbE with oversubscription.
The NP-2/10L has no traffic managers, making it a more direct
replacement for the current NP-1c in cut-through designs. The
NP-2/5 and NP-2/10L are priced at $445 in volume. Samples of
all NP-2 variants are due in 4Q04. —BW
Complete
coverage of EZchip products appears in our report A
Guide to Network Processors.
Intel has
upgraded its Centrino notebook platform with an optional
802.11a/g Wi-Fi
module. The new PRO/Wireless 2915ABG Mini PCI module adds
5GHz support but is otherwise similar in design to Intel’s
802.11g (2200BG) module. The 2915ABG is priced at a small premium
over
the 2200BG; OEMs can choose to standardize on one module
or to offer customers both options. Perhaps equally important
is a new
version 9.0 of Intel’s PROSet/Wireless software, which
runs on both the 2915ABG and 2200BG cards. The new software
adds support
for WPA2 (802.11i) security and WMM (802.11e) QoS. —BW
Complete
coverage of Intel’s
Wi-Fi chips appears in our report A Guide to Wireless LAN Chip
Sets.
Last
week, Agilent announced
the 4Q04 sampling of a new 4G FC controller, the quad-channel
HPFC-6400A Tachyon QX4. Without providing a date, Agilent
also promised a 2G FC version of Tachyon QX4. The Tachyon
QX4 makes
use of an eight-lane PCI Express bus to provide sufficient
host bandwidth. The Tachyon QX4 supports end-to-end data
reliability by implementing the T-10 Data Integrity Field
(DIF), a special
tag that resides with data on the storage medium and detects
corruption during storage or transport. Agilent has not
announced performance
in IOPS or pricing for Tachyon QX4. —SI
Complete
coverage of Agilent’s
FC controllers appears in our report A Guide to Storage Networking
Silicon.
New Report: A Guide to Next-Generation
Sonet Silicon
We're excited to introduce
an-all new report focused exclusively on next-generation Sonet. A
Guide to Next-Generation Sonet Silicon provides in-depth coverage on the newest products
and vendors for framers/mappers and add/drop multiplexers (ADM)
designed for network edge and metro network applications.
Sonet networks, originally designed to accommodate voice communications,
have been faced with the challenge posed by the massive growth
in communications bandwidth. This growth is largely fueled by
demands for data services that have distinctly different
characteristics
than voice making the Sonet network inefficient for data transport.
To address this growth, the industry has specified new standards
for virtual concatenation and link capacity adjustment. This report examines mappers for Ethernet, FC, and RPR as well
as ADM chips. Although some of these devices were designed to
also support native RPR or long-haul Ethernet, most are
optimized to
use the existing Sonet network. Most of these devices can encapsulate
any type of data using GFP (Global Framing Protocol) and perform
VCAT (virtual concatenation) and LCAS (link capacity adjustment
scheme).
Get extensive coverage of next-generation silicon from Agere,
PMC-Sierra, AMCC, Vitesse, Cypress, Infineon, Alliance, and
TranSwitch. The
report also covers competing silicon from startup vendors such
as Galazar, Parama, and Arrive Technologies.
"A Guide
to Next-Generation Sonet Silicon" is packed with over
100 pages of crucial information you need to understand these hot
technologies. We explore the target markets and relevant applications,
then analyze each product, providing clear explanations of their
architectures and features.
Unlike typical market research, "A Guide to Next-Generation
Sonet Silicon," provides analysis of the underlying technology
and business strategies rather than quantitative market data. We
provide the forward-looking view you need to determine winners
from also-rans.
Order by October
8, 2004 to get a special prepublication
discount. To get more information on this report, visit
our web site.
Linley's
Latest Column:
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Times: Needed:
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