Xcellon-Flex 4x40GbE QSFP+ Full Emulation Load Module

Load module model


Number of ports per load module

4-ports of 40GbE QSFP+

Chassis slots per module


Maximum ports per chassis:

XGS12-SD: 48-ports 40GbE QSFP+

XGS12-SD rackmount: 48-ports 40GbE QSFP+

XG12 rackmount (6000W): 48-ports 40GbE QSFP+

XM12 High Performance (4000W): 24-ports 40GbE QSFP+

XM2 Desktop: 4-ports 40GbE QSFP+[1]

QSFP+ media support


40GBASE-SR4 and 40GRBASE-LR4 pluggable, optical transceivers

40GBASE-SR4 active optical fiber cables (AOC)

40GBASE-CR4 passive, copper direct attached cables up to 5 meters in length

Multi-core processor technology


Interface protocols

IEEE802.3ae10GbE LAN


Data center protocols

(see optional upgrades for DCBX, FCoE, FCF)


Layer 2-3 routing protocol emulation support


Capture buffer per port


Transmit engine

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

Stream definitions per port


Number of transmit flows per port (sequential values)


Number of transmit flows per port (PGID)

1 million

Table UDF

1 million entries

User defined field features

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

Data field per stream

Fixed, increment (byte/word), decrement (byte/word), random, repeating, user-specified

Frame length controls

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

Error generation

CRC (good/bad), undersize, oversize

IPv4, IPv6, UDP, TCP checksum

Hardware checksum generation and verification

Receive engine

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

Trackable receive flows

64K per port


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)

Statistics and rates

(counter size: 64 bits)

Link state, line speed, frames sent, valid frames received, bytes sent/received, fragments, undersize, oversize, CRC errors, VLAN tagged frames, 6 user-defined stats (UDS), capture trigger (UDS 3), capture filter (UDS 4), 8 QoS counters, data integrity frames, data integrity errors, sequence checking frames, sequence checking errors, ARP, and ping requests and replies

Flow control

IEEE802.03x PAUSE frame control

IEEE802.1Qbb (PFC)

Link fault signaling at 40GbE

Generate local and remote faults with controls for the number of faults and order of faults, plus the ability to select the option to have the transmit port ignore link faults from a remote link partner

Latency measurements

2.5ns resolution in packet timestamp

Intrinsic latency adjustment

Ability to remove inherent latency from 40GbE port electronics when used with MSA-compliant 40GbE transceivers

Transmit line clock adjustment

Ability to adjust the parts per million (ppm) line frequency over a range of -100 to +100 ppm

40GbE physical coding sublayer (PCS) test features:

IEEE 802.3ba-compliant PCS transmit and receive side test capabilities

  • Per PCS lane, transmit lane mapping

Supports all combination of PCS lane mapping: Default, Increment, Decrement, Random, and Custom

  • Per PCS lane, skew insertion capability

User-selectable from zero up to 3 microseconds of PCS Lane skew insertion on the transmit side.

  • Per PCS lane, lane marker, or lane marker and payload error injections

User-selectable ability to inject errors into the PCS Lane Marker and simultaneously into PCS Lane Marker and Payload fields. This includes the ability to inject sync bit errors into the Lane Marker and Payload. User can control the PCS lane, number or errors, and period count; and manage the repetition of the injected errors.

  • Per PCS lane, receive lanes statistics

PCS Sync Header and Lane Marker Lock, Lane Marker mapping, Relative lane deskew up to 52 microseconds, Sync Header and PCS Lane Marker Error counters, indicators for Loss of Synch Header and Lane Marker, BIP8 errors

Xcellon-Flex 4x40GbE QSFP+ Full Emulation Load Module

Operating temp. range

41°F to 86°F (5°C to 30°C), ambient air temperature[3]

Load module dimensions

16.90” (L) x 12.00” (W) x 1.28” (H)

429mm (L) x 305mm (W) x 33mm (H)


Module only: 11.55 lbs (5.25 kg)

Shipping: 13.85 lbs (6.29 kg)


Application Support

Xcellon-Flex 4x40GbE QSFP+ Full Emulation Load Module

IxExplorerTM: Layers 1, 2, and 3 wire-speed traffic generation, capture, and analysis.

IxExplorer Tcl API: Custom user script development for layer 1-3 testing.

IxNetwork: Provides wire-rate traffic generation with service modeling that builds realistic, dynamically-controllable data-plane traffic. IxNetwork offers the industry's best test solution for functional and performance testing by using comprehensive emulation for routing, MPLS, VPLS, high-availability, IP multicast, switching, carrier 이더넷, broadband, and DCB protocols.

IxNetwork Tcl API: Custom user script development for layer 2-7 testing.


[1] The XM2 portable chassis (941-0003) supports up to 1 FlexFE40G4Q load module. No other load module may be installed in the XM2 portable chassis when a FlexFE40G4Q load module is installed.

[2] In the Data Center Bridging mode the number of transmit streams per port on the FlexFE40G4Q load module is 256 streams.

[3]When an Xcellon-Flex load module is installed in an XM12 chassis, the maximum operating temperature of the chassis is 30°C (86°F) ambient air temperature.

Key Features
  • 40GbE QSFP+ 포트별로 고성능 멀티코어 프로세서 설치
  • 우수한 L2/3 및 L4-7 프로토콜 확장성
  • 데이터 센터에서 바로 사용 가능
  • IEEE802.3ba 표준 준수 여부를 확인하기 위한 PCS 레인 테스트
  • XGS12-SD, XGS12-HS, XGS2-SD 및 XGS2-HS 섀시와 호환 가능
  • 레이어 2-7을 위한 IxNetwork 및 IxLoad 테스트 애플리케이션 지원

40GbE 표준화 이후 고밀도, 고성능 네트워크 스위치, 라우터, aggregation devices, 네트워크 장비 및 서버의 발전 속도가 점점 빨라져왔습니다. Ixia는 포트 밀도와 프로토콜 확장성을 지속적으로 향상시킴으로써 네트워크 장비 제조업체(NEM), 인터넷 사업자, 기업 및 정부의 테스트 요건에 계속 부응해 왔습니다.

Xcellon™은 차세대 네트워크와 장치를 테스트하는 Ixia의 고밀도 아키텍처입니다. IP를 통한 유무선 네트워크 컨버전스가 전개됨에 따라 인터넷 사업자는 대역폭 소비량이 많은 미디어 중심 서비스를 우수한 품질로 고객의 요구에 맞게 제공해야 합니다. 클라우드 컴퓨팅과 데이터 센터 컨버전스는 비즈니스 IT의 역학 관계를 변화시키고 있으며 동시에 보안 위협은 날이 갈수록 더 정교해지고 있습니다. 이러한 모든 발전 양상은 성능과 확장성이 보다 우수한 테스트 솔루션에 대한 수요로 이어집니다.

Ixia의 Xcellon-Flex 4x40GbE Full Emulation load 모듈은 단일 슬롯 로드 모듈에서 포트 4개를 지원하는, 완벽한 에뮬레이션이 가능한 40GbE QSFP+ 기본 load 모듈입니다. 풍부한 L1-7 기능을 갖춘 4x40GbE load 모듈은 중간 범위에서 높은 범위의 L2-3 프로토콜 에뮬레이션에 적합하며, 합리적인 가격으로 테스트 규모를 조정할 수 있습니다.