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PHy loopback Error cant receve pkt !!!! - Nortel Networks 5510-24T 24-Port Gigabit Ethernet Switch (AL1001E08-E5)

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Can 10GE Optical Interfaces of a Switch Work upon a Unidirectional Fiber Connection?


10GE optical interfaces of a switch cannot work upon a unidirectional fiber connection. A unidirectional fiber connection occurs between two 10GE optical interfaces when one interface is Down because the Rx fiber is removed, while the other interface is still Up because its Rx fiber can receive link_Up signals from the PHY layer.
A switch determines the status of a 10GE optical interface according to the IEEE 802.3ae standard. As defined in this standard, the MAC layer of a 10GE optical can send local_fault and remote_fault signals. A switch can determine the link status based on only the link status of the PHY layer or based on the link status of the PHY layer and the local_fault and remote_fault signals from the MAC layer.
On a Huawei switch, link status of a 10GE optical interface turns Up only when the link status of the PHY layer is Up and both the local_fault and remote_fault signals are 0. When two 10GE optical interfaces are interconnected and the Rx fiber on one interface is removed, this interface goes Down and the MAC layer of the interface generates a local_fault signal. Meanwhile, the local interface sends a fault signal to the remote interface through the Tx fiber. The remote interface receives the link_Up signal from the PHY layer and the remote_fault signal from the MAC layer. Therefore, the link status of the remote interface goes Down.
S2300 Switch Thunder link com

Jan 22, 2017 | Huawei Computers & Internet

1 Answer

I have the yamaha dtexpress and a midifase conect but cant get anny sound to the computer??????????????


try a midi loopback device or a viruual midi cable such as sonys virtual midi cable: http://www.johnrofrano.com/tutorials/virtualmidirouter.htm

i dont know if this one will work, you could also search for loopb1 and hubi's midi loopback device, one of these should work.

what you have to do is use one of these programs, or something similar, to connect your midi input to the soundcard's midi wavetable or to your midi/synth/sequencing software's midi input.

also, the drum machine should be set to output to midi channel 10. make sure that your software is set to recieve on midi channel 10, if applicable.

Nov 29, 2010 | Yamaha Dtxpress Iv Special Electronic Drum...

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I got samsung scx-4521f when receving fax, I am only receving first top quater of the page and the display reads comm.error


possibly a the line is too noisy. connect a phone to it dial 1 and listen for any sounds.
Good line should be quite.

Nov 10, 2010 | Samsung SCX 4521F All-In-One Laser Printer

2 Answers

What is the loop backup ip and why its being use?


Loopback detection is used to prevent any looping of signals of on two ports it will shut the 2 ports down until line is cleared perventing a collision of packet jam Notifies administrator where a problem is

Aug 26, 2010 | D-Link Computers & Internet

1 Answer

How to repair ML-2010


my printer paper no receved online error sometime
receve plese let know what is the provlem

Dec 08, 2009 | Samsung ML 2010 Laser Printer

1 Answer

Cant get on the internet


Check ethernet card, do a loopback test, run winipconfig or ipconfig release and renew, reboot modem and repeat steps good luck

Apr 22, 2009 | Computers & Internet

1 Answer

NIC too close to USB port?


Hi Antatg,
Go into your bios and make sure all your USB option are enabled, specially Enable USB for legacy devices, and check to make sure you NIC is enables. Hope that helps!
Good Luck!

Jan 07, 2008 | Dell Dimension 1100 PC Desktop

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