Forwarding Paradigm
The Enterasys S-Series chassis utilize both fabric-based point-to-point and fabric-less meshed forwarding architectures. The S1A, S4, S6,
and S8 chassis use a fabric-based forwarding architecture that provides multiple high bandwidth data paths between I/O modules, while
the S3 chassis provides a high performance, fabric-less meshed forwarding architecture ideally suited for highly available network edge
wiring closet deployments. All chassis are optimized for redundant high performance switching and routing as well as providing flexible
connectivity and the ability to add features and scale performance as required and as new technologies become available.
I/O fabric modules provide scalable, high performance data paths as well as a full complement of front panel interfaces with flexible
modular interface options. A single I/O fabric may be used in either an S1A, S4, S6, or an S8 chassis, however, the use of two I/O fabrics
creates a load sharing fabric pair that provides up to 2560 Gbps switching capacity and adds high-availability features. The S8 and S6
chassis augments the load sharing fabric pair by allowing the addition of a third I/O fabric module, increasing the system reliability and
performance in the unlikely event of an I/O fabric failure. An S8 or S6 system with two I/O fabrics installed will gracefully reduce the
fabric switching capacity by 50 percent, in the event of an I/O fabric failure, however, when a third I/O fabric is installed, the system will
maintain a full 2560 Gbps of switching performance. The load sharing fabric architecture ensures the highest availability and performance
for the most demanding and mission-critical networks.
Page 2
Performance and Port Density Specification
I/O Module Specification
SSA130 SSA150 SSA180 S1 S3 S4 S6 S8
Chassis Slots 1 3 4 6 8
System Switching Capacity
40 Gbs 120 Gpbs 120 Gbps 320 Gbps 360 Gbps 1.28 Tbps 1. 92 Tbps 2.56 Tbps
System Switching
Throughput
30 Mpps 90 Mpps 90 Mpps 240 Mpps 360 Mpps 960 Mpps 1440 Mpps 1920 Mpps
Total Backplane Capacity
320 Gbps 525 Gbps 3 Tbps 7 Tbps 9.5 Tbps
Maximum 10/100/1000
Base-TX Class 3 PoE or
1000Base-X SFP (MGBIC)
ports per system
48 48
48
(No PoE)
72 216 288 432 576
Maximum 10GBase-X SFP+
ports per system
4 4 4 24 96 112 168 232
Maximum 40GBase-X
QSFP+ ports per system
6 24 36 48
S130 Class Modules S140 I/O Modules S180 I/O Modules
Wiring Closet, Distribution
Layer, Small Network Core
Wiring Closet, Distribution Layer, Small Network Core Distribution Layer, Server Aggregation,
Part Number
ST4106-
0248
SG4101-
0248
ST2206-
0848
SG2201-
0848
SK2008-
0832
SK2009-
0824
SK8008-
1224
SK8009-
1224
SL8013-
1206
Used in
S3/S4/S6/
S8
Chassis
S3/S4/S6/
S8
Chassis
S3/S4/S6/
S8
Chassis
S3/S4/S6/
S8
Chassis
S3/S4/S6/
S8
Chassis
S3/S4/S6/
S8
Chassis
S4/S6/S8
Chassis
S4/S6/S8
Chassis
S4/S6/S8
Chassis
Port Type RJ45 SFP RJ45 SFP SFP+ 10GBase-T SFP+ 10GBase-T QFSP+
Port Quantity 48 48 48 48 32 24 24 24 6
Port Speed
10/100/
1000 Mbps
1000 Mbps
10/100/
1000 Mbps
1000 Mbps 10 Gbps 10 Gbps 10 Gbps 10 Gbps 40 Gbps
PoE Support
802.3af,
802.3at
802.3af,
802.3at
Option Module
Slots
1, (Type1) 1, (Type1) 2, (Type 2) 2, (Type 2)
Module I/O
Throughput
30 Mpps 30 Mpps 120 Mpps 120 Mpps 120 Mpps 120 Mpps 240 Mpps 240 Mpps 240 Mpps
I/O Switching
Capacity
40 Gbps 40 Gbps 160 Gbps 160 Gbps 160 Gbps 160 Gbps 320 Gbps 320 Gbps 320 Gbps
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