LB-200 is a smart companion of NuDOG. There are two application modes that make on-site network test easy and efficient. One is loopback test and another is asymmetric network transmission test. Common evaluation methodology such as Throughput and Latency test are applied for the test by attached software, NuDOG-2544 and NuDOG device.
For fixed network provider, Telecom and ISP Company, LB-200 that works with NuDOG is suitable to test the throughput and latency performance of leased line or ADSL. Both LB-200 and NuDOG act as packet generator that is located at CO and CPE side for packets transmission and receiving.
The distance and cable quality is the key factor that affects the transmission bandwidth of ADSL and leased line. The bandwidth is not guaranteed even though the bandwidth allowed is configured at central office. By a pair of LB-200 and NuDOG, technical personnel can test and realize the maximum downstream and upstream bandwidth available of the transmission media, such as ADSL by telephone line or wireless transmission for public service. The solution can verify if the transmission bandwidth meets the requirement that customer applied, or realize the maximum available bandwidth of the leased line or ADSL network if bandwidth from central office is unlimited.
Asymmetric and Symmetric Test by NuDOG and LB-200
Loopback Test by NuDOG and LB-200
Feature
Support Round Trip (loopback) and End-to-End (bi-directional symmetric/asymmetric) test mode when LB-200 works with NuDOG
As a loopback client that returns incoming test streams for loopback (round trip) test
As a packet generator for bi-directional symmetric/asymmetric (end to end) network test
Software utility NuDOG-2544 of NuDOG can remote control the test for both NuDOG and remote LB-200
Test loopback, throughput and latency function by single network route to remote site.
Handheld device with external and replaceable battery pack that is convenient for on-site network test.
Distinctive LED indicators are able to pinpoint the status of current running network.
Real-time LED indicator of network speed, duplex mode, loopback / PG mode, packet length, common errors (CRC, Loss), utilization and elapsed test time in LED digit display.
Support loopback and packet generation for network throughput and latency test in one device
Compact and portable size that is easy to carry for on-site test.
Replaceable battery pack for the same or different technical personnel to work all day long.
Charge battery pack by convenient USB port
Simple and convenient way to examine the maximum network bandwidth of asymmetric network such as ADSL.
Check before acceptance of network wiring task that is done by third party contractor
Do loopback test by one linked route in real network environment that is much better then two routes loopback.
Variety of test features when it works with test equipment (NuDOG) and software utility of Xtramus.
As a link tester that is able to detect the link speed, duplex mode if loopback mode is not activated.
Without extra standby personnel at the other test site, user can control NuDOG at local site and LB-200 at remote site for the test
Software Support
Not required, or NuDOG-2544 when works with NuDOG
Interface
Front side:
2 x UTP network port for JR-45 connector
Rear side
Mini-USB port to acquire power
LED Indicator
Power: Power status
Port status: Either one below is shown
A: Show port A status
B: Show port B status
Application Mode: Either one below is activated
LB: Loopback mode
PG: Packet generation mode
Link status: Show A or B status according to Port Status LED above
ON: ON for loopback mode and blinking indicates loopback packets is forwarding
Link: Network cable is linked up.
100M: 100Mbps connection
10M: 10Mbps connection
Full: Full duplex mode
Tx: Packets is transmitting
Rx: Packets is receiving
Loopback1: Layer 1 (physical layer) loopback mode
Loopback2: Layer 2 (MAC based) loopback (default)
Tx packet length
64, 128, 256, 512, 1024, Long bytes
Rx packet length and error
64: Received frame (packet) is equal or beyond 64 bytes and below 127 bytes
128: Equal or beyond 128 and below 255 bytes
256: Equal or beyond 256 and below 511 bytes
512: Equal or beyond 512 and below 1023 bytes
1024: Equal or beyond 1024 and below or equal 1517 bytes
Long: Equal or beyond 1518 bytes
Note: LB-200 subtracts 4 bytes for VLAN tagged frame
CRC: CRC error found
Lost: Packet loss found
Note: LED of all receiving status keep ON if the case happens, unless Clear key is pressed.
Utilization: Show A or B traffic rate according to Port Status LED above
Tx/Rx: Show either Tx or Rx mode
4Mbps, 8Mbps, 16Mbps, 80Mbps, 90Mbps, 100Mbps
Note: LED indicator is ON all the time if the case happens. 100% is wirespeed. When real rate is approaching marked LED, the LED is blinking
Speed and Mode
Auto Negotiation (for port A)
10/100Mbps Half / Full Duplex
Forced Mode (for port B)
10Mbps Full Duplex
Auto MDI/MDIX
Support
Loopback
Layer 1 and layer 2 loopback
Test Mode
Loopback mode: As a loopback client that returns incoming test streams for loopback (round trip) test.
Support two selective loopback modes.
Layer 1 loopback that filters out broadcast, multicast and null DA packets and resend the rest of incoming packets directly.
In addition to layer 1 loopback function, layer 2 loopback also resend packets with switched DA / SA (destination / source MAC address) and recalculated CRC for different applications.
Packet Generator when works with NuDOG: As a packet generator for bi-directional symmetric/asymmetric (end to end) network test
Throughput Test that tests the symmetric / asymmetric throughput of network by two packet generator, NuDOG and LB-200
Round-Trip Latency Test that tests the average latency forth and back from packet generator (NuDOG) to the LB-200.
Dimension
95 mm x 76.6 mm x19.6 mm
Temperature
Operating: 0°C~ 40°C (32°F~ 104°F)
Storage: 0°C~ 50°C (32°F~ 122°F)
Humidity
Operating: 0% ~ 85% RH
Storage: 0% ~ 85% RH
Net Weight
188g
Power Source
External Battery Pack
Acquire Power from USB cable
Miscellaneous
Operation Hotkey
On / Stop: Start/Stop to forward packets for the loopback test
Config: Circulated around layer 1 or 2 loopback modes
Clear: Clear LED indicator for next loopback test
Rate: Switch between Tx or Rx utilization rate of selected port (A or B)
External Battery Pack
Able to mount external battery pack to LB-200 for on-site test without power supply.
USB port of both LB-200 and battery pack are all for power supply or charge purpose without data link to PC
Application
Network bandwidth assurance and verification for ADSL or leased line
Bandwidth test and verification for connection between different locations of office or building
Throughput and Latency test of point to point wireless transmission for public service
Solution of Last-mile test between CO (central office) and CPE (customer premises equipment).
Feature
