Datasheet

www.edge-core.com
AS7712-32X-EC Product Specifications
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Highlights
Using the AS7712-32X-EC for the top-of-rack/aggregation
switches, one can connect to 6 virtual chassis using ECMP
to balance the traffic. This provides a 2:1 oversubscription to
the hosts.
For the leaf and spine switches within the virtual chassis, it is
suggested to use the “AS7712-32X-EC EdgeCOS” 32 x
100G QSFP+ switch with no oversubscription.
OF-DPA
OF-DPA is Broadcom’s new OpenFlow 1.3 implementation for
data center and carrier switches.
Earlier implementations based on OpenVswitch were not able
to leverage the full capacity of the switching ASIC. The
OpenVswitch design did not set boundaries on how tables
can be used. However, the switching ASIC has a fixed
processing pipeline and the hardware tables along this
pipeline are of fixed sizes. Therefore, OpenFlow designs
based on OpenVswitch often do not fit the ASIC’s design.
To solve this problem, Broadcom has introduced OF-DPA,
which is an abstraction layer between OpenFlow 1.3 and the
switching ASIC. OF-DPA provides a defined
OpenFlow-compatible flow pipeline with defined tables and
increased table sizes, and the ability to leverage the full
capacity of the switching ASIC.
The table opposite illustrates the increased table sizes in
comparison to the older OpenVswitch-based approach.
Virtual Chassis
A Virtual Chassis (VC) works just like a real chassis, only that
it is made of individual switches instead of fabric and module
blades.
In a virtual chassis, the fabric modules are called spine
switches, while the port modules are called leaf switches.
Compared to a traditional chassis, a virtual chassis is more
flexible in scaling than a fixed-size chassis. This results in
lower power consumption and space saving in the racks for
certain configurations.
In addition, a virtual chassis can be scaled to support twice
the amount of downstream ports to top-of-rack/aggregation
switches, just by adding another layer of 1 RU switches into
the Clos architecture.
As an early adopter, EdgeCOS is one of the first switch
operating systems to support OF-DPA, providing a future-proof
OpenFlow implementation to end users and application
providers.
Verified OpenFlow controllers compatible with OF-DPA:
• OpenDaylight (with Table Type Patterns)
• Ryu (with custom OF-DPA library)
VC 1
16
32
ToR/Aggregation
Switch
Up to 48 Servers/Access Switches
48 x 10G
Network Services,
Hardware Appliances,
FW, SLB etc
512
VC 6
16
32
Leaf
Spine
Open Vswitch Based OF-DPA 1.0 on AS7712-32X-EC
Tables
17
L2 Bridging
32 K 160 K
L3 Unicast
1500 (shared) 80 K (IPv4) / 40K (IPv6)
L3 Multicast
1500 (shared) 72 K (IPv4) / 36K (IPv6)
VLANs
494 4094 x 54 ports
Tier Switches per VC 40G ports to ToRS
2 48 512
3 112 1024
4
240 2048
5
496 4096