Specifications

7
WWW.EXTREMENETWORKS.COM
Designed For Cloud Data Centers
and Central Oce
Direct Attach (VEPA)
With optional feature pack, EXOS can support Direct Attach
(VEPA), which eliminates the virtual switch layer, simplifying
the network and improving performance. Direct Attach
enables data center simplification by reducing network tiers
from 4 or 5 tiers to just 3 or 2 tiers, depending on the size
of the data center.
ExtremeXOS Network Virtualization (XNV)
To further enhance data center operations, EXOS supports
XNV (ExtremeXOS Network Virtualization), which is
natively supported in the ExtremeXOS operating system.
XNV provides insight, control and automation for highly
virtualized data centers.
PFC
ExtremeXOS supports Priority-based Flow Control (PFC
or IEEE 802.1Qbb), which allows network trac to be
controlled independently based on Class of Service. PFC
allows network trac that requires lossless throughput to
be prioritized, while other trac types that do not require
or perform better without PFC can continue as normal.
Data Center Bridging (DCB)
DCB features such as PFC, Enhanced Transmission
Selection (ETS), and Data Center Bridging eXchange
(DCBX) are supported in ExtremeXOS for data center
convergence. Multi-Switch Link Aggregation Groups
(M-LAG) can address bandwidth limitations and improve
network resiliency, in part by routing network trac around
bottlenecks, reducing the risks of a single point of failure,
and allowing load balancing across multiple switches.
Service-Provider Central Oces
Service providers and their central oce facilities face
unique challenges in serving thousands to hundreds of
thousands of subscribers, often with multiple services, as
well as residential, business Ethernet, and/or Ethernet
mobile backhaul. ExtremeXOS includes multiple features
and capabilities to support the rigorous demands of the
carrier environment.
Virtual eXtensible Local Area
Network (VXLAN)
VXLAN provides a means to create a logical layer 2
network spanning layer 3 boundaries via the use of
encapsulation. VXLAN provides the same Ethernet layer 2
network services as VLAN environments do today, but with
greater extensibility and flexibility. VXLAN segments are
independent of the underlying network topology and as a
fabric overlay or data center interconnect solution VXLAN
can eciently utilize available network paths. VXLAN
packets are transported through the underlying network
based on layer 3 header information and can take full
advantage of L3 equal-cost multipath (ECMP) to use all
available paths. As virtualization becomes more common
with vendors increasingly adopting VXLAN, it is still rare to
have a completely virtualized environment in a data center.
A data center that has native VXLAN virtual machines as
well as bare-metal non-VXLAN-capable devices can take
advantage of the high-performance hardwarebased VXLAN
gateway capability on EXOS supported platforms.
MPLS
On ExtremeXOS-based switches MultiProtocol Label
Switching (MPLS) can be enabled, by way of an optional
feature pack. MPLS provides the ability to implement trac
engineering and multi-service networks, and improve
network resiliency. The MPLS protocol suite provides the
ability to deploy services based on L2VPNS (VPLS/VPWS),
BGP-based L3VPNS; LSP Establishment based on LDP,
RSVP-TE, static provisioning; integrated OAM tools like
VCCV, BFD and CFM; and MPLS fast reroute to support
local convergence around network failure.