BCM5645 features bcm5238 bcm5238 bcm5238 bcm5421 bcm5421 8881g1g 8 pci bus strataswitch ii tm BCM5645 bcm5238 bcm5238 bcm5238 88 strataswitch ii tm BCM5645 2mx32 sdram 2mx32 sdram 2mx32 sdram 2mx32 sdram turbogig tm BCM5645 application diagram 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 ?layer 3 switching ?all ffp actions ?steering, forwarding, reclassifying low power of device, 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 summary of benefits strataswitch ii BCM5645 integrated multi-layer switch product brief BCM5645 24 10/100 mb and 2 10/100/1000 mb ethernet ports high-speed 2.5-gbps turbogig tm stacking link 8.9 mpacket/second (line rate) switching 1-4 classes of service (cos); map to 802.1p priority default route table with 16 entries integrated 255 entry ip multicast table ip multicast support (igmp snooping capable) 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
the BCM5645 , 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 tm product family supports advanced applications and services, at wire speed, with non- blocking performance. the BCM5645 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 BCM5645 -based switch to sustain line rate on all 48 fast ethernet and 2-gigabit ethernet ports for layer 2, and layer 3 switching and all l2-l7 processing applications. the strataswitch ii tm 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 tm family supports using the gigabit ports or turbogig tm in a stacking link mode, giving you tremendous scalability configuring your switching system. the BCM5645 also provides a wide range of choices in levels of manageability and solution costs. for example, the BCM5645 provides a low-cost i 2 c 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 tm enables many new applications and services. isps can benefit from the metering capabilities of the strataswitch ii tm , 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. BCM5645 overview gpic1 epic1 arl tables l3 tables vlan tables gmii turbogig tm turbogig tm epic3 arl tables l3 tables vlan tables smii / s3mii gpic2 epic2 arl tables l3 tables vlan tables tbi/gmii pci i 2 c cps bus 32-gbps channel smii / s3mii smii / s3mii external data packet memory (64- or 128-bit sdram) internal data packet memory cmic mmu BCM5645 block diagram phone: 949-450-8700 fax: 949-450-8710 email: info@broadcom.com web: www.broadcom.com broadcom , the pulse logo , strataswitch tm , strataswitch ii tm , turbogig tm , contentaware and connecting everything tm are trademarks of broadcom corporation and/or its subsidiaries in the united states and certain other countries. all other trademarks are the property of their respective owners. broadcom corporation 16215 alton parkway, p.o. box 57013 irvine, california 92619-7013 ? 2002 by broadcom corporation. all rights reserved. 5645-pb01-r-4.24.02
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