Load Module

Xcellon-Ultra NP

Connector Type

RJ45 or SFP for GbE ports; XFP for 10GbE port

Number of Ports

12 GbE (10/100/1000) + 10GbE

Maximum Ports per Chassis:

- XGS12-HS or XGS12-SD or XM12

- XGS2-HS or XGS2-SD or XM2


144 GbE + 12 10GbE

24 GbE + 2 10GbE

Layer 2-3 Routing Protocol and Emulation


Layer 4–7 Application Traffic Testing


Capture Buffer per Port

64 MB

Number of Transmit Flows per Port (sequential values)


Number of Transmit Flows per Port (arbitrary values)


Number of Trackable Receive Flows per Port


Number of Stream Definitions per Port

4000 in packet stream mode (sequential) or advanced stream (interleaved) modes. Each stream definition can generate millions of unique traffic flows

Transmit Engine

Wire-speed packet generation with timestamps, sequence numbers, data integrity signature, and packet group signatures

Receive Engine

Wire-speed packet filtering, capturing, real-time latency for each packet group, data integrity, and sequence checking

User Defined Field (UDF) Features

Fixed, increment or decrement by user-defined step, value lists, range lists, cascade, random, and chained

Table UDF Feature

Comprehensive packet editing function for emulating large numbers of sophisticated flows. Up to 750K table UDF entries are supported on the Xcellon-Ultra NP.


48-bit source/destination address, 2x128-bit user-definable pattern and offset, frame length range, CRC error, data integrity error, sequence checking error (small, big, reverse)

Data Field (per stream)

Fixed, increment (byte/word), decrement (byte/word), random, repeating, user-specified up to 13K bytes

Statistics and Rates:
Counter Size: 64-Bit

Link State, Line Speed, Frames Sent, Valid Frames Received, Bytes Sent/Received, Fragments, Undersize, Oversize, CRC Errors, VLAN Tagged Frames, User-Defined Stat 1, User- Defined Stat 2, Capture Trigger (UDS 3), Capture filter (UDS 4), User-Defined Stat 5, User-Defined Stat 6, 8 QoS counters, Data Integrity Frames, Data Integrity Errors, Sequence Checking Frames, Sequence Checking Errors, ARP, and Ping requests and replies

Error Generation

CRC (Good/Bad/None), Undersize, Oversize

Packet Flow Statistics

Real-time statistics to track up to 128K packet flows on the Xcellon-Ultra NP with throughput and latency measurements.

Latency Measurements

20ns resolution

IPv4, IPv6, UDP, TCP

Hardware checksum generation

Frame Length Controls

Fixed, random, weighted random, or increment by user-defined step, random, weighted random

Operating Temperature Range

41°F to 86°F (5°C to 30°C)

Ixia's Xcellon™ load modules are the highest performing and most scalable application traffic generation solution available in the industry. The Xcellon-Ultra™ NP offers complete layer 2-7 packet generation, routing, and application testing functionality in a single load module.

The Xcellon-Ultra NP load module combines the processing power and resources of up to twelve per-port CPUs into one physical port, providing the highest layer 4-7 line-rate performance -- unmatched by any other layer 4-7 test solution. Any of the twelve Gigabit Ethernet (GE) ports can be used individually or aggregated through the single 10GE port. Each test port supports wire-speed layer 2-3 traffic generation and analysis, high-performance routing/bridging protocol emulation, and true layer 4-7 application subscriber emulation and traffic generation. The twelve GE ports can be used to build an ultra-high density test environment for auto-negotiable 10/100/1000 Mbps Ethernet over copper and fiber. With twelve slots per XGS12 chassis, up to 144 GE and twelve 10GE test ports are available in a single test system.

Xcellon-ultra np

Xcellon-Ultra NP 10GE Load Module

Xcellon-Ultra NP can meet the challenge of next-generation advanced networking and security platforms. Each GE port contains a powerful RISC processor running Linux, and a complete testing-optimized TCP/IP stack. The Xcellon-Ultra NP ports incorporate a technology unique to the test and measurement industry – network processors. Each Xcellon-Ultra NP GE port uses multiple network processors that are optimized for layer 4-7 testing.

Xcellon-Ultra NP’s CPU count and NP architecture create a powerful application traffic generation platform that emulates millions of real-world application flows, including voice, video and massive amounts of data.