If you build, validate, or manufacture Ethernet switches, routers, NICs, or data-center fabrics, the Ixia Xdensity XDM10G32S (part number 944-1080) remains one of the most cost-effective ways to put massive 10-Gigabit Ethernet port density into a test rack. This single-slot load module packs 32 ports of 10GbE SFP+ onto one card and scales to an incredible 384 ports of 10GbE in a single Ixia XM12 or XG12 chassis — a density that, at launch, doubled its nearest competitor and that still hasn’t been matched economically on the refurbished market.
We currently have 58 refurbished XDM10G32S modules in stock, each fully tested, shipped with a comprehensive test report, and backed by a one-year warranty. Here’s everything a lab manager, test engineer, or procurement lead needs to know about this card — and why it’s still one of the smartest buys in network test equipment today.
What the XDM10G32S Is Built For
The XDM10G32S is the flagship of Ixia’s Xdensity family: an ultra-high-density 10-Gigabit Ethernet traffic generator and analyzer designed to fully load the fabric of converged data-center switches and routers. Driven by Ixia’s IxNetwork software (and recognized in IxExplorer under the model name XDM10G32S), it delivers wire-speed Layer 2–3 traffic generation, real-time analysis, and routing-protocol emulation across all 32 ports simultaneously.
Typical applications include:
- Network equipment manufacturer (NEM) testing — validating throughput, latency, and forwarding performance of high-density 10GbE switches and routers, including RFC 2544, RFC 2889, and RFC 3918 benchmarking at scale.
- Data-center fabric validation — stress-testing multi-terabit converged switches with data-center bridging, FCoE, and priority-based flow control.
- Service-provider lab testing — emulating large routed and bridged topologies with BGP, IS-IS, OSPF, LDP, and more.
- ASIC, FPGA, and switch-fabric stress testing — driving deterministic line-rate traffic to expose design limits.
- Regression and QA test beds — high-port-count 10GbE capacity that runs 24×7 without tying up premium high-speed test gear.
- NIC and server-access validation — anywhere 10GbE SFP+ is the interface under test.
The design philosophy is deliberate: maximum 10GbE port density and data-plane muscle at the lowest cost per port. When the question is “how many 10GbE ports can I load at wire rate, affordably?” — this is the card.
Full Technical Specifications
All specifications below come from Ixia’s official Xdensity 10GE SFP+ datasheet (Document 915-0719-01 Rev. G) and the Ixia IxOS Platform Reference Guide.
Ports, density, and form factor
- 32 × 10GbE SFP+ ports per module, occupying a single chassis slot
- Up to 384 ports per chassis in an Optixia XM12 High Performance (4000W) or XG12; up to 64 ports in an XM2 portable chassis
- IEEE 802.3ae 10GE LAN interface protocol
- Module dimensions: 15.95″ × 12.00″ × 1.28″ (405 × 305 × 33 mm); weight 7.1 lb (3.2 kg)
Optics and media
- SFP+ transceivers (sold separately): 10GBASE-SR/SW multimode (Ixia 948-0013), 10GBASE-LR/LW single-mode (948-0014), and SFP+ direct-attach copper cabling (948-0016) — confirm copper support against your IxOS release
Chassis compatibility and power
- Compatible with Ixia Optixia XM2, XM12, and XG12 chassis
- Running up to 12 Xdensity modules requires the XM12 High Performance 4000W chassis (941-0009); a standard XM12 (941-0002) requires the FRU-OPTIXIAXM12-01 (943-0005) power-supply upgrade kit
- Operating temperature 5–40°C
Traffic generation (transmit engine)
- Wire-speed packet generation with timestamps, sequence numbers, data-integrity signatures, and packet-group signatures
- 16 streams per port (including Advanced Scheduler / Data Center mode)
- Billions of transmit flows per port (sequential values); millions (non-sequential)
- Frame sizes from 64 bytes at line rate up to 9216 bytes (port 0) / 2500 bytes (other ports); fixed, random, incrementing, and on-the-fly frame-size control
- Hardware IPv4/UDP/TCP/ICMP/ICMPv6/IGMP checksum generation; CRC good/bad error generation
Analysis (receive engine)
- Wire-speed packet filtering, data integrity, real-time latency, and sequence checking per packet group
- 8K trackable receive flows per port
- Filters on 48-bit MAC addresses, dual 128-bit user-definable patterns with offsets, frame-length ranges, and CRC/integrity/sequence/checksum errors
- Comprehensive 64-bit statistics counters: frames/bytes sent and received, fragments, undersize/oversize, CRC errors, VLAN-tagged frames, user-defined stats, and more
Latency and timing
- Hardware-based latency measurement with store-and-forward and cut-through modes
- 20 ns timestamp resolution
- Intrinsic-latency adjustment for any MSA-compliant SFP+ transceiver
- ±100 ppm transmit line-clock adjustment per card
Protocol emulation
- Host protocols: ARP, NDP, IPv4, IPv6, IGMP, MLD, DHCPv4/v6 (client and server)
- Routing/bridging: BFD, BGPv4/v6, CFM, EIGRP, IS-ISv4/v6, ISIS-DCE, LDP, Link OAM, OSPFv2/v3, PIM-SM/SSM v4/v6, RIP, RIPng, STP/RSTP/MSTP, RSVP-TE
- Data center: FCoE, FIP, FCF, LLDP/DCBX, IEEE 802.1Qbb priority flow control, IEEE 802.3x PAUSE
- Packaged QuickTests for RFC 2544, RFC 2889, and RFC 3918
Multi-user operation
- Up to 4 simultaneous users per module, in four independent 8-port resource groups — ideal for shared lab environments
One honest note for buyers: the XDM10G32S is an IxNetwork-driven Layer 2–3 instrument. If your test plan requires stateful Layer 4–7 application emulation (IxLoad), pair it with an Xcellon-class L4–7 module — the Xdensity’s job is delivering the most wire-speed 10GbE data-plane ports per dollar, and it does that better than anything else in its generation.
Which Older Ixia Modules the XDM10G32S Replaces
The Xdensity’s headline value is consolidation. Before this card, building a large 10GbE test bed meant stacking lower-density modules across multiple chassis:
Ixia NGY series (LSM10GXM family). The previous density leaders topped out at 8 ports per slot: the LSM10GXM8S-01 (944-0051), LSM10GXM4S-01 (944-0050), and LSM10GXM2S-01 (944-0054), plus the XFP-based Extra Performance variants (LSM10GXM8XP-01) and 10GBASE-T versions (LSM10GXM8GBT-01). NGY reached 96 ports per XM12 chassis; the XDM10G32S quadruples that to 384. One Xdensity card replaces the port count of four LSM10GXM8S-01 modules, and Ixia’s own datasheet documents a 48 percent power savings versus four chassis full of NGY SFP+ cards delivering the same 384 ports.
Xcellon-Flex 16-port modules. The FlexAP10G16S and FlexFE10G16S delivered 16 ports per slot; Xdensity doubles that density for pure L2–3 data-plane work.
Legacy Optixia 10GE LSMs. Early-generation cards like the LM10GEXENPAK, LSM10G1-01, LSM10GL1-01, and the 10GE LSM XM8/XM3 boards used bulky XENPAK/XFP/X2 optics at a fraction of the density. The XDM10G32S modernizes all of that to compact SFP+ and multiplies port count by up to an order of magnitude.
If your lab is running aging NGY or Xcellon-Flex inventory, a set of refurbished XDM10G32S cards restores and expands your 10G capacity in dramatically less rack space and power.
Competitor Modules It Replaces or Competes With
Cross-shopping brands? The XDM10G32S competes directly with — and for many labs replaces — these 10GbE test modules:
- Spirent TestCenter HyperMetrics dX — DX-10G-S32. The closest analog: Spirent’s 32-port 10G SFP+ module for ultra-high-scale switch and router fabric testing. One key difference: the Spirent DX-10G-S32 is a double-height module occupying two chassis slots, while the XDM10G32S fits its 32 ports in one — effectively doubling Ixia’s slot-density advantage.
- Spirent HyperMetrics mX — MX-10G-S8 and CV-10G-S8. Spirent’s 8-port 10G SFP+ modules for L2–7 performance testing.
- Spirent fX2 — FX2-10G-S8. Spirent’s 8-port dual-speed 10G/1G SFP+ module.
- Xena Networks Odin 10G series (now Teledyne LeCroy Xena) — e.g., the Odin-10G-1S-6P and Z10 Odin 6-port SFP+ stateless traffic generators.
- Agilent/Keysight N2X 10GbE cards — legacy N5602A, N5603A, and related 10G modules from the older N2X router-tester platform.
If you searched for any of those part numbers, a refurbished XDM10G32S delivers the same core capability — wire-speed 10GbE load generation and RFC benchmarking — at higher per-slot density and a fraction of the cost of new equipment.
Why 10GbE Testing Still Matters in 2026
With 400G and 800G dominating headlines, it’s fair to ask whether 10GbE test gear is yesterday’s news. It isn’t — and the reasons matter for anyone budgeting a test lab:
10GbE is the enterprise and server-access workhorse. While hyperscale spines race ahead, the enormous installed base of servers, top-of-rack uplinks, storage arrays, firewalls, and campus backbones runs at 10G — and fresh 10GbE equipment continues to ship into servers, NAS devices, and edge platforms every year. Every one of those products needs validation, and that requires 10GbE load generation.
Regression testing never stops. Vendors must regression-test shipping 10G line cards, NICs, and switches for years after launch — firmware revisions, interop matrices, hardware spins. That’s continuous, high-volume work, and it’s exactly what a high-density, deterministic card like the Xdensity was built for. There’s no reason to burn 400G-class budget on 10G regression.
Refurbished capacity is the rational capital decision. When your test plan calls for dozens or hundreds of 10GbE ports, refurbished Xdensity modules deliver the port count at a fraction of new Keysight pricing — freeing budget for the higher-speed test islands that genuinely need new gear.
The Keysight connection keeps the platform alive. Keysight Technologies acquired Ixia in 2017 in a deal valued at approximately $1.6 billion, folding it into the Keysight Ixia Solutions Group. The IxNetwork and IxOS software that drives the XDM10G32S continues under Keysight today — so whether your team searches for an “Ixia load module” or a “Keysight 10GbE test module,” this is the same proven platform, with a software ecosystem your lab likely already knows.
In Stock Now: 58 Refurbished XDM10G32S Modules — Test Report and 1-Year Warranty Included
We currently have 58 refurbished Ixia XDM10G32S (944-1080) load modules in stock — one of the largest single inventories of this ultra-high-density 10GbE card available anywhere. A matched pool this size means you can stand up or expand a large test bed with consistent hardware, standardize spares across an existing Xdensity deployment, or add serious regression capacity without new-equipment lead times.
Every refurbished unit we ship includes:
- A comprehensive test report — each module is fully tested before shipment, and the detailed report ships with the unit, so your lab has documented proof of functionality on day one.
- A full one-year warranty — every module is backed by 12 months of coverage for complete peace of mind.
- Significant savings versus new list price — build a 384-port 10GbE test bed for a fraction of the new-equipment budget.
Transceivers (10GBASE-SR, 10GBASE-LR, or direct-attach copper) are available separately — ask us about bundling optics with your modules.
Whether you’re expanding an Optixia XM12/XG12 test bed, consolidating older NGY LSM10GXM8S-01 cards, replacing a Spirent DX-10G-S32 deployment, or standing up a cost-effective 10GbE regression lab from scratch, our refurbished XDM10G32S inventory is tested, documented, warrantied, and ready to ship.
Quantities are limited to the 58 units on hand.
Also in stock: 7 refurbished Ixia Xdensity XDM10G8S modules — the 8-port sibling of the XDM10G32S, ideal when you need Xdensity-class 10GbE performance at a lower port count.
View the refurbished Ixia XDM10G32S product page and order now →
Or contact us directly for volume pricing on multiple units, a sample test report, or chassis-compatibility guidance:
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