HP NC7170 Service Manual
Retired
QuickSpecs
Integrated NC7781Gigabit PCI-X LOM
Integrated NC7781Gigabit PCI-X LOM
Integrated NC7781Gigabit PCI-X LOMIntegrated NC7781Gigabit PCI-X LOM
Overview
The integrated NC7781 LOM incorporates a variety of features on a single chip using Category 5 (or better) twisted-pair cabling,
thus increasing flexibility and reducing support costs. The N7781 ships with industry-standard drivers that are compatible with other
NC series gigabit adapters. This LOM supports 10/100/1000 Mbps Ethernet speeds as well as a PCI-X 64-bit/133MHz data path,
compatible with existing PCI bus architectures. This range of features enables ProLiant server customers to protect their current
hardware investment while also future-proofing their ProLiant servers for the inevitable increase in networking throughput.
Additionally, the NC7781ships with support for Network Fault Tolerance, Load Balancing, Jumbo Frames, and various TCP offload
capabilities that improve performance.
The integrated NC7781 is a PCI-X based LOM (LAN on Motherboard) embedded chip that provides high-performance and featurerich functionality on 10BASE-T, 100BASE-TX and 1000BASE-TX networks. Along with all the advanced features that ProLiant
customers have come to expect, the NC7781 includes support for Jumbo Frames, Wake on LAN (WOL), Dual Address Cycles
(DAC), and Pre-Boot Execution environment (PXE).
Models
Models
ModelsModels
Integrated NC7781 PCI-X LOM
Related Options
Related Options
Related OptionsRelated Options
Related Gigabit Server Adapters
Related Gigabit Server Adapters
Related Gigabit Server AdaptersRelated Gigabit Server Adapters
NC310F PCI-X Gigabit Server Adapter, 1000-SX
NC320T PCI Express Gigabit Server Adapter
NC1020T PCI Gigabit Server Adapter
NC6770 PCI-X Gigabit Server Adapter, 1000-SX
NC7170 Dual Port PCI-X 1000T Gigabit Server Adapter
368169-B21
367047-B21
353377-B21
244949-B21
313881-B21
ProLiant Essentials Intelligent Networking Pack
ProLiant Essentials Intelligent Networking Pack
ProLiant Essentials Intelligent Networking PackProLiant Essentials Intelligent Networking Pack
ProLiant Essentials Intelligent Networking Pack - tracking license
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372951-B21
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Retired
QuickSpecs
Integrated NC7781Gigabit PCI-X LOM
Integrated NC7781Gigabit PCI-X LOM
Integrated NC7781Gigabit PCI-X LOMIntegrated NC7781Gigabit PCI-X LOM
Performance
Gigabit Ethernet Throughput, High-Performance, and Flexibility for Today's Businesses
Gigabit Ethernet Throughput, High-Performance, and Flexibility for Today's Businesses
Gigabit Ethernet Throughput, High-Performance, and Flexibility for Today's BusinessesGigabit Ethernet Throughput, High-Performance, and Flexibility for Today's Businesses
A 1000 Mbps Ethernet transfer rate delivers outstanding network performance that improves response time and removes bottlenecks
across the entire network. Full-duplex support allows the NC7781 to transmit and receive data simultaneously at rates up to 1000
Mbps for Gigabit Ethernet.
Port Bonding or Load Balancing
Port Bonding or Load Balancing
Port Bonding or Load BalancingPort Bonding or Load Balancing
Transmit Load Balancing (TLB) and Switch-Assisted Load Balancing (FEC/GEC/802.3ad static-mode configuration only) are two
port-bonding methods supported by the NC7781. TLB provides both failover and balancing of transmit traffic across all adapters for
increased performance. For even higher performance, Switch-Assisted Load Balancing (SLB) provides port failover and balancing of
both transmit and receive traffic across all ports when connected to a switch that supports this feature. Both of these load balancing
techniques build a bigger pipe for improved networking bandwidth and enable users to install up to 7 adapters in addition to this
LOM (for a team consisting of 8 ports) within a ProLiant server to aggregate their throughput up to a maximum of 16 Gigabits per
second full-duplex transmissions.
Bus-mastering
Bus-mastering
Bus-masteringBus-mastering
This LOM uses bus-mastering technology to maximize throughput and minimize CPU utilization.
PCI-X Data Path
PCI-X Data Path
PCI-X Data PathPCI-X Data Path
HP was an early champion of PCI-X bus technology and has played a key role in the development and industry adoption of the PCI-X
specification. The NC7781 is HP's first LOM to feature a 64-bit/133MHz data path, which yields faster transmissions with lower CPU
utilization.
Jumbo Frames
Jumbo Frames
Jumbo FramesJumbo Frames
Jumbo Frames (also known as Extended Frames) offer a 9K byte Maximum Transmission Unit (MTU), which is six times the size of
traditional Ethernet frames. The NC7781 supports jumbo frames as a way to achieve higher throughput and better CPU utilization
when deployed in a network infrastructure that supports them. Jumbo frames are particularly useful for database transfers and tape
backups.
TCP Offloads and Interrupt Coalescing
TCP Offloads and Interrupt Coalescing
TCP Offloads and Interrupt CoalescingTCP Offloads and Interrupt Coalescing
The NC7781 supports TCP Checksum Offloads as well as TCO Segmentation Offloads. Both reduce the load on the CPU for an
overall improved system response. Interrupt Coalescence groups multiple packets and issues a single interrupt to the host. This
process optimizes host efficiency, leaving the CPU available for other duties.
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Retired
QuickSpecs
Integrated NC7781Gigabit PCI-X LOM
Integrated NC7781Gigabit PCI-X LOM
Integrated NC7781Gigabit PCI-X LOMIntegrated NC7781Gigabit PCI-X LOM
Scalability and Reliability
Tri-Speed Support
Tri-Speed Support
Tri-Speed SupportTri-Speed Support
Because the NC7781 supports 10Mbps Ethernet, 100Mbps Fast Ethernet, and Gigabit Ethernet; users are guaranteed end-to-end
protocol support across their enterprise. Like all HP ProLiant server adapters and LOMs, the NC7781 adheres to open industry
standards, insuring that it will work seamlessly with any network devices that also support IEEE standards.
PCI-X Support for Traditional PCI slots
PCI-X Support for Traditional PCI slots
PCI-X Support for Traditional PCI slotsPCI-X Support for Traditional PCI slots
PCI-X technology insures hardware investment protection by retaining backward compatibility with the standard PCI bus architecture
at the device and driver level.
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