BOARDCOM BCM5655

BCM5655
®
STRATAXGS™ BCM5655 INTEGRATED MULTI-LAYER SWITCH
SUMMARY OF BENEFITS
FEATURES
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• High-density 10/100/1000 Mbps L2/L3 Ethernet switches
• New service offerings for ISPs
48 x 10/100 Mbits, 4 x 10/100/1000 Mbps Ethernet ports
Integrated L2 table with auto learning/aging
Integrated L3 table with longest prefix match
Double 802.1Q (Q in Q) VLAN stacking
MPLS Tunnel/VC packet labeling for L2 VPN
Scalable to hundreds Fast/Gigabit Ethernet in a system
8 Classes of Service (COS) with WRED and WRR, DSCP/
802.1p priority
Spanning trees (802.1s and 802.1w)
32 link aggregation trunk groups; ECMP/WCMP; mirroring
IPMC groups and hardware packet replication
Flow control (802.3x) and HOL blocking prevention
64-bit DDR SDRAM with up to 32 MB of buffer memory
ContentAwareTM network processing per port
• Line-rate, multi-field packet classification
• Support for 802.1p, TOS/DiffServ, rate limiting, policing, and
priority/VLAN (single or double) tagging and remapping
- Metro Ethernet-L2 VLAN (Q-in-Q) and MPLS VPN
- Voice over IP-guaranteed low latency prioritization
• Advanced traffic management-metering, shaping, and
scheduling (SP, RR, WRR, WFQ), down to 64-kbps flows
• ContentAware classification, tagging, and remapping provides
maximum security and flexibility
• Broadcom switch API compatability enables software reuse
and faster time-to-market
multi-layer scalable enterprise 10/100/1000
• High-density
TAR
G E Tswitches
APPLICATIONS
Mbps L2/L3
Ethernet
• Multi-tenant unit (MTU) Metro Ethernet VPN multi-layer
switches
• Service Provider Metro Ethernet VPN Edge Switches
BCM5655 Application Diagram
CPU
BCM5655
BCM
BCM
5248
5238
2 x 6 port
RJ-45
BCM
BCM
5248
5238
BCM
BCM
5248
5238
2 x 6 port
RJ-45
BCM
BCM
5248
5238
2 x 6 port
RJ-45
10/100 Mbps
BCM
BCM
5248
5238
BCM
BCM
5248
5238
2 x 6 port
RJ-45
BCM
BCM
5464
64
54
RJ-45 RJ-45 RJ-45 RJ-45
10/100/1000
OVERVIEW
Layer 3
On-chip Tables
CPU I/O
FFP
ARL
L3
Advanced MMU
DDR SDRAM interface for
non-blocking performance
MAC(s)
BCM5655 Block Diagram
The BCM5655 network switch is the most advanced multi-layer, single
chip solution for high density 48 x 10/100 Mbps ports and 4 x 10/100/
1000 Mbps Ethernet uplinks.
Designed for multi-layer switching, the BCM5655 offers hardware
switching on both L2 and L3 traffic. Filtering, policing, priority tagging
can be performed in real time with no impact on forwarding
performance.
Supporting the latest Metro Ethernet L2 VPN applications, the
BCM5655 offers double 802.1Q VLAN stacking, also known as Q-in-Q.
This allows enterprise and service provider networks to breakthrough the
4K VLAN tag limitation. Furthermore, the BCM5655 also provides
MPLS Tunnel/VC packet labeling for standards-based IETF L2 VPN via
MPLS.
With 8 Class of Service (CoS) queues via SP, RR, WFQ and WRR
distribution, the BCM5655 enables full range of service applications
such as low latency VoIP and real time video, as well as mission critical
data.
Advanced Ethernet features such as multiple and rapid spanning tree
(802.1s and 802.1w), flow control (802.3x), prioritization (802.1p) and
9K jumbo frame are fully integrated. For load balancing as well as
redundancy purposes, ECMP and WCMP are incorporated. Up to 32
trunk groups (eight links per group) can be assigned for link aggregation
(802.3ad).
Providing line rate packet filtering and classification, the advanced Fast
Filter Processor (FFP) offers ContentAwareTM network processing per
port. It supports TOS/DiffServ, rate limiting, policing, shaping,
metering, scheduling, priority tagging, and remapping down to flows as
small as 64 kbps, making it ideal for committed bandwidth usage and
firewall applications.
Designed for increasing multicast applications, the BCM5655 supports
L2/L3 multicast packets via hardware replication. IPMC packets are
hardware replicated up to 8 and 32 VLANs across the Fast and Gigabit
Ethernet ports, respectively. Multicast traffic can also be managed by
three port filtering modes to control the distribution behavior.
Optimized for the most demanding network switching requirements, the
BCM5655 integrates an auto-learning/aging MAC and IP LPM tables.
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
© 2004 by BROADCOM CORPORATION. All rights reserved.
5655-PB03-R
10/12/04
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com