BCM5646_03 BOARDCOM [Broadcom Corporation.], BCM5646_03 Datasheet
BCM5646_03
Manufacturer Part Number
BCM5646_03
Description
STRATASWITCH II BCM5646 INTEGRATED MULTI-LAYER SWITCH
Manufacturer
BOARDCOM [Broadcom Corporation.]
Datasheet
1.BCM5646_03.pdf
(2 pages)
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STRATASWITCH II™ BCM5646 INTEGRATED MULTI-LAYER SWITCH
24 10/100 Mb and 2 10/100/1000 Mb Ethernet ports
High-speed 2.5-Gbps TurboGig
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
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
F E A T U R E S
PCI
Bus
TM
®
stacking link
BCM5238
StrataSwitch II
SDRAM
2Mx32
BCM5646
8
BCM5646 Application Diagram
BCM5238
SDRAM
8
2Mx32
TM
BCM5238
TM
8
BCM5421
TurboGig
1G
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2.5-Gbps TurboGig
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
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
BCM5421
1G
BCM5646
TM
S U M M A R Y O F B E N E F I T S
BCM5238
StrataSwitch II
SDRAM
2Mx32
BCM5646
8
BCM5238
TM
stacking link defines the next generation
SDRAM
8
2Mx32
BCM5238
TM
8
TM
feature set
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BCM5646_03 Summary of contents
Page 1
STRATASWITCH II™ BCM5646 INTEGRATED MULTI-LAYER SWITCH • 24 10/100 Mb and 2 10/100/1000 Mb Ethernet ports • High-speed 2.5-Gbps TurboGig stacking link TM • 8.9 Mpps (line rate) switching • 1-4 ...
Page 2
PCI External Data Packet Memory (64 or 128 bit SDRAM) CMIC MMU Internal Data EPIC1 Packet Memory SMII / S3MII The BCM5646, with a forwarding rate of 8.9 Mpps, defines the next generation of performance for 48-port Fast Ethernet switching ...