High Performance, Dual Port 10GbE Unified Wire Adapter, Enables TCP,
UDP, iSCSI, iWARP, and FCoE Offload over Single Unified Wire with
SR-IOV, EVB/VNTag, DCB
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Overview
Chelsio’s T420-BT is a dual port 10GBase-T 10 Gigabit Ethernet
Unified Wire adapter with PCI Express 2.0 host bus interface. It is
capable of providing two 10GbE ports by using standard RJ-45 connectors
with Twisted Pair Cat-6a cables. T420-BT is optimized for cloud
computing, HPC, virtualization, storage, and other data center
applications. The fourth-generation (T4) technology from Chelsio
provides the highest 10GbE performance and dramatically lowers host
system CPU communications overhead with on-board hardware that
off-loads TCP/IP, iSCSI, FCoE and iWARP RDMA processing from its host
system.
The Unified Wire Solution
With the T420-BT, Chelsio is enabling a unified wire for LAN,
SAN and cluster traffic. This unified wire was made possible by the
high bandwidth and low latency of 10GbE combined with storage and
cluster protocols operating over TCP/IP (iSCSI, FCoE and iWARP
respectively).
In parallel, operating systems and hypervisors have
incorporated native support for iSCSI and database applications are now
supporting file-based storage protocols such as NFS as an alternative
to SANs.
T420-BT includes a full-fledged integrated Traffic Manager for
robust flow control, traffic management and QoS.
Fibre Channel over Ethernet (FCoE) provides a transition path
from legacy SANs to converged networks. Expanding its unified wire
approach, Chelsio has added FCoE hardware support to the new T420-BT
adapter. The adapter’s quad ports and IEEE 802.3ad link
aggregation/failover features are ideal for critical network
applications that require redundancy and high-availability
capabilities.
T420-BT Ethernet-only networking reduces the data center’s
cost in network adapters, cables, switches, rack space, power,
equipment spares, management tools, planning, networking skills, and
installation.
T4 – Fourth-Generation Protocol Offload Engine
The T4 is Chelsio’s fourthâ€generation TCP offload (TOE)
design, thirdâ€generation iSCSI design, and secondâ€generation iWARP
(RDMA) implementation. For the server connection, the T4 chip includes
a PCI Express v2.0 ×8 host interface. With support for the 5Gbps Gen2
data rate, the PCIe interface provides up to 32Gbps of bandwidth to the
server. T4 also adds support for PCIe I/O virtualization. Most of T4
features are enhanced versions of those found in T3. Features that
carry over from T3 include stateless offloads, packet filtering
(firewall offload), and traffic shaping (media streaming).
Complete and Flexible TCP Offload
The T4 has hundreds of programmable registers for protocol
configuration, RFCs, and offload control. The T420-BT can offload TCP
processing per connection, per-server, per-interface, and globally and
simultaneously tunnel traffic from non-offloaded connections to the
host processor for the native TCP/IP stack to process. The T420-BT
provides a flexible zero copy capability for regular TCP connections,
requiring no changes to the sender, to deliver line rate performance at
minimal CPU utilization.
Packet Switching and Routing
T420-BT integrates a high performance packet switch, which
allows switching traffic from any of the input ports to any of the
output ports (wire-to-wire) and from any of the output ports to any of
the input ports (host-to-host).
Robust, Proven Solution
Subjected to thousands of hours of compatibility testing, over
multiple years of stress testing by several OEM test suites and
production deployments in servers, storage systems and cluster
computing, Chelsio’s robust, stable protocol offload technology
delivers proven performance in a wide range of environments. The
T420-BT is generations ahead of competing products.
Software Drivers
Chelsio offers a full suite of protocol software and drivers
with the T420-BT adapters. See www.chelsio.com/support for latest info.
The software supports operation in both protocol-offload and
non-offload modes.
Ordering info
- Model: T420-BT
- Physical interface: Dual port RJ-45 / 10GBase-T
- Connector: RJ-45 / Cat-6a
- Media: Twisted Pair
Highlights
- PCI Express Gen2 x8
- Low Latency
- Full TCP & UDP offload
- TCP Chimney
- Full iSCSI, FCoE offload
- Full iWARP RDMA offload
- EVB, VEPA, Flex10, VNTag
- PCI-SIG SR-IOV
- Integrated media streaming offload
- HW based firewall in the cloud
- Traffic filtering & management
Applications
Data-Center Networking
- Scale up servers and NAS systems
- Link servers in multiple facilities to synchronize
data centers
- Consolidate LAN, SAN, and cluster networks
Cloud Computing
- Virtualization features to maximize cloud scaling
and utilization
- Runs InfiniBand, Fibre Channel apps unmodified on
Ethernet
- Cloud ready functional and management features
- QoS and Traffic management
Networked Storage
- Enable high performance NAS systems and
Ethernet-based IP SANs
- Develop shared-storage systems providing both file-
and block-level services
High Performance Computing
- Very low latency Ethernet
- Increase cluster fabric bandwidth
- Deploy Ethernet-only networking for cluster fabric,
LAN, and SAN
Specifications
Host Interface
- PCI Express Gen2 x8
- MSI-X, MSI and support for legacy pin interrupts
High Performance RDMA
- Low latency and line rate bandwidth
- Enhanced RDMA primitives
- iWARP support on Linux OFED
- Microsoft Network Direct support
UDP & Multicast Offload
- UDP Sockets API
- Low user-to-user latency
- Multicast replication on ingress or egres
Virtualization
- PCI-SIG SR-IOV
- 128 Virtual and 8 Physical functions
- 144 port virtual switch
- EVB, VEPA, Flex10, VNTag
- 336 virtual MAC addresses
FCoE
- Full HBA FCoE (Initiator or Target)
- Open-FCoE Offload (Initiator)
- CRC32 offload generation & verification
- Ingress & Egress ACL (Access Control List)
iSCSI Acceleration
- Full iSCSI initiator and target mode stack
- CRC32 offload generation & verification
- iSCSI proxy switching based on SCSI CDB
- Full HBA offload
TCP/IP Full Offload
- Full TCP implementation including IPv4 & IPv6
- Microsoft Chimney support
- Extensive RFC compliance, fully featured stack
- Full TCP Proxy between any set of connections
- VLAN support up to 4096 different VLAN IDs
- Load balancing and Fail-over capabilities
Stateless Offloads
- TCP/UDP checksum offload for IPv4 & IPv6
- TSO, LRO, LSO, and GSO for IPv4 & IPv6
- VLAN filtering, insertion & extraction
- Line rate packet filtering and attack protection
- Fine granularity time stamping (down to 4ns)
- Ethernet Routing (packet header rewrite)
- Packet Tracing and Packet Sniffing
Ethernet
- IEEE 802.3ae (10 GbE)
- IEEE 802.3z (1 GbE) compliant
- IEEE 802.IP priority
- IEEE 802.IQ VLAN tagging
- IEEE 802.1Qbg EVB/VEPA
- IEEE 802.1Qbh VNTag
- IEEE 802.3x flow control
- IEEE 802.3ad load-balancing and failover
- Ether II and 802.3 encapsulated frames
- Multiple MAC addresses per interface
- Jumbo Frames up to 9.6Kbyte
Physical and Environmental
- Dimensions without bracket: 6.6 in. x 2.71 in. or
16.76 cm x 6.88 cm
- Operating Temp: 0 to 55oC or 32 to 131oF
- Operating Humidity: 5 to 95%
- Airflow: 200 lf/m
- Typical power consumption: 18.5 W