IBM EN0T 4-Port (2x10GbE SFP+ SR / 2x1GbE RJ45) PCIe2 x8 Low-Profile Adapter

Overview

The IBM EN0T (CCIN 2CC3) is a high-performance, 4-port convergent network interface card (NIC) designed for enterprise networking demands within IBM Power Systems. Featuring a low-profile (LP) form factor, the card provides an optimal combination of high-speed 10 Gigabit Ethernet (10GbE) short-range (SR) optical ports alongside legacy 1 Gigabit Ethernet (1GbE) copper ports to streamline enterprise traffic consolidation, link aggregation, and failover topologies.

Technical Specifications

Parameter	Specification Details
Feature Code (FC)	EN0T
CCIN	2CC3
FRU Part Number	00E2865 (Base card assemblies also track under 00E2715)
Low-Profile Bracket P/N	00E2720
Bus Interface	PCI Express 2.0 x8 (PCIe2 x8)
Form Factor	Short, low-profile form factor (Half-Height / Half-Length)
Total Ports	4 Active Ports (2x 10GbE SFP+ SR Optical + 2x 1GbE RJ45 Base-T)
Duplex Configuration	Full-duplex only with auto-negotiation
Diagnostic Wrap Plugs	12R9314 (SFP+ SR Wrap) / 10N7405 (1 Gb UTP Wrap)

Port Configurations & Media Interface

1. 10 Gigabit Ethernet (Ports 1 & 2)

• Interface Type: SFP+ (Small Form-factor Pluggable Plus)

• Transceiver Type: Integrated Shortwave Laser Optics (SR Optical transceivers)

• Connector Type: LC Duplex-type

• Media / Cabling Support: Multimode Fiber (MMF-850nm)

• Supported Transmission Distances:

  • OM1 (62.5/125µm): 0.5 meters to 33 meters

  • OM2 (50/125µm): 0.5 meters to 82 meters

  • OM3 / OM4 (50/125µm): 0.5 meters to 300 meters

2. 1 Gigabit Ethernet (Ports 3 & 4)

• Interface Type: RJ45 Base-T

• Supported Speeds: Dual-speed capability supporting 1000 Mbps (1Gbps) and 100 Mbps networks. (Note: Legacy 10 Mbps connectivity is not supported)

• Cabling Requirements: 4-pair, Category 5 (CAT-5) Unshielded Twisted Pair (UTP) or higher specification copper cables.

• Maximum Distance: Up to 100 meters.

Performance & Protocol Implementations

Advanced Offloading & Consolidation:

The adapter features native hardware-based stateless offloading mechanisms that significantly reduce host processor utilization during intensive data plane transfers.

• Packet Processing Offloads:

  • TCP/UDP checksum offload for IPv4 and IPv6.

  • TCP Segmentation Offload (TSO) / Large Send Offload.

• Network Virtualization & Quality of Service (QoS):

  • IEEE 802.1Q Virtual Local Area Network (VLAN) tagging.

  • IEEE 802.1p Priority Leveling within tagged VLAN frames.

• Resiliency & Throughput Enhancement:

  • IEEE 802.3ad Link Aggregation Control Protocol (LACP) / EtherChannel for load-balancing and automated failover.

  • IEEE 802.3x Flow Control.

  • Jumbo Frame support up to 9.6 KB.

• System Resource Delivery: Interrupt moderation support with Message Signal Interrupts (MSI) and MSI-X vectors.

Operating System Compatibility

• IBM AIX:

  • AIX 6.1 (with TL9 SP3 + APAR IV56366 or later)

  • AIX 7.1 (with TL3 SP3 + APAR IV56367, or TL1 SP10, or TL2 SP5 or later)

• Linux for Power:

  • Red Hat Enterprise Linux (RHEL) Version 6.5, Version 7, or later.

  • SUSE Linux Enterprise Server (SLES) Version 11 SP3, or later.

• VIOS: Virtual I/O Server environments for PowerVM resource mapping.

Enterprise System Compatibility

The EN0T feature is designed electronically identical to the full-height EN0S variant, but tailored with a low-profile bracket for strict low-profile expansion trays.

• IBM Power8 Scale-Out / Scale-Up Servers: Compatible with low-profile PCIe slots across target systems such as the Power S814, S822, S822L, S824, and matching expansion blocks.

• IBM Power9 Architecture: Backwards compatible with PCIe Gen3 / Gen4 slots engineered to accommodate PCIe Gen2 x8 infrastructure signatures.