BCM5646
®
STRATASWITCH II™ BCM5646 INTEGRATED MULTI-LAYER SWITCH
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
•
24 10/100 Mb and 2 10/100/1000 Mb Ethernet ports
High-speed 2.5-Gbps TurboGig
TM
stacking link
8.9 Mpps (line rate) switching
1-4 Classes of Service (COS); map to 802.1p priority
IGMP snooping
Integrated (8k) L2 table with auto learning
Integrated (2k) L3 table
Integrated (256 KB) data packet memory
64- or 128-bit-wide SDRAM support
Spanning Tree support per VLAN
DiffServ compliant
Stacking architecture compatible with StrataSwitch I
TM
IEEE 802.1Q.D support
Fast Filter Processor (FFP)
-
Examines up to the 80th byte of a packet
-
Supports TOS and DiffServ field modification
-
Bandwith regulation and monitoring per network flow
-
Network data flow tracking granular to 1 Mbps
SUMMARY OF BENEFITS
•
2.5-Gbps TurboGig
TM
stacking link defines the next generation
of performance for 48-port switching devices
•
Optimized for 48FE+2GE and 24+2GE switches
•
New service offerings for ISPs
-
Pay for bandwidth consumption
-
Voice over IP
-
Police over-consumption of network resources
-
Line rate switching on all ports
•
Greater insight to network resource utilization through the
advanced FFP features
•
More efficient deployment of existing network resources
through insight provided by StrataSwitch II
TM
feature set
•
Line rate switching on all ports for:
-
Layer 2 switching
-
All FFP actions — steering, forwarding, reclassifying
•
Low device power, 3W (<120 mW/ FE port), enables low-cost
power supplies
•
High level of integration minimizes PCB layer count and
routing issues
•
Flexible (128- or 64-bit) SDRAM interface supports low system
cost of memory
BCM5646 Application Diagram
2Mx32
SDRAM
2Mx32
SDRAM
2Mx32
SDRAM
2Mx32
SDRAM
PCI
Bus
TurboGig
TM
StrataSwitch II
TM
BCM5646
StrataSwitch II
TM
BCM5646
8
8
8
1G
1G
8
8
8
BCM5238
BCM5238
BCM5238
BCM5421
BCM5421
BCM5238
BCM5238
BCM5238
OVERVIEW
PCI
External Data
Packet Memory
(64 or 128 bit SDRAM)
I
2
C
SMII / S3MII
ARL
TABLES
CMIC
EPIC3
L3
TABLES
VLAN
TABLES
MMU
ARL
TABLES
CPS BUS
32 Gbps channel
ARL
TABLES
Internal Data
Packet Memory
EPIC1
L3
TABLES
VLAN
TABLES
GPIC1
EPIC2
L3
TABLES
VLAN
TABLES
GPIC2
SMII / S3MII
GMII
TurboGig
TM
SMII / S3MII
TBI/GMII
TurboGig
TM
The BCM5646, with a forwarding rate of 8.9 Mpps, defines the next
generation of performance for 48-port Fast Ethernet switching solutions.
Through its advanced ContentAware™ feature set, the StrataSwitch II™
product family supports advanced applications and services, at wire
speed, with non-blocking performance.
The BCM5646 uses 60 million transistors and 1 MB of internal memory
to integrate the functionality of large 48-port board designs into two
chips. This level of integration allows the BCM5646-based switch to
sustain line rate on all 48 Fast Ethernet and 2-Gigabit Ethernet ports for
Layer 2 and all L2-L7 processing applications.
The StrataSwitch II™ Fast Filter Processor (FFP) delivers line rate
packet processing to support policy management, VoIP, and firewall
applications.
The data packet memory can be extended from 4 MB to 64 MB using
commodity SDRAM in either a 128-bit-wide interface or a 64-bit-wide
interface.
The StrataSwitch™ family supports using the gigabit ports or
TurboGig™ in a stacking link mode, giving you tremendous scalability
configuring your switching system.
The BCM5646 also provides a wide range of choices in levels of
manageability and solution costs. For example, the BCM5646 provides
a low-cost I2C interface for unmanaged applications, as well as a 33-
MHz PCI interface for higher management and network service
requirements.
The flow metering and monitoring of the StrataSwitch II™ enables many
new applications and services. ISPs can benefit from the metering
capabilities of the StrataSwitch II™, eliminating unregulated bandwidth
from over-consuming their network. Using the monitoring features of
the FFP, IT managers can gain tremendous insight to the utilization of
their current network resources and optimize those resources
accordingly.
Broadcom
®
, the pulse logo, and
Connecting everything
®
are trademarks of Broadcom Corporation and/
or its subsidiaries in the United States and certain other countries. All other trademarks mentioned are the
property of their respective owners.
®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2003 by BROADCOM CORPORATION. All rights reserved.
5646-PB03-R
10/23/03
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
Embedded System
京公网安备 11010802033920号
EEWORLD
