Bedienungsanleitung ZYXEL VES-1000

[. . . ] VES-1000 Series VDSL-Ethernet Switches October 2002 Version 3. 41 User's Guide VES-1000 Series Ethernet Switch Copyright Copyright © 2002 by ZyXEL Communications Corporation The contents of this publication may not be reproduced in any part or as a whole, transcribed, stored in a retrieval system, translated into any language, or transmitted in any form or by any means, electronic, mechanical, magnetic, optical, chemical, photocopying, manual, or otherwise, without the prior written permission of ZyXEL Communications Corporation. Published by ZyXEL Communications Corporation. All rights reserved. Disclaimer ZyXEL does not assume any liability arising out of the application or use of any products, or software described herein. Neither does it convey any license under its patent rights nor the patents rights of others. [. . . ] This is the number of times in which the transmission fails due to excessive collisions. This is the number of times a collision is detected later than 512 bit time into the frame transmission. This is the number of frames (including bad frames) transmitted that were 64 octets in length. 9-4 System Maintenance 1 VES-1000 Series Ethernet Switch Table 9-2 Port Statistics FIELD Tx65To127 Tx128To255 Tx256To511 Tx512To1023 Tx1024ToMAX RxOctetsMSB RxOctetsLSB TxOctetsMSB TxOctetsLSB RxFragments RxJabbers DESCRIPTION This is the number of frames (including bad frames) transmitted that were between 65 and 127 octets in length. This is the number of frames (including bad frames) transmitted that were between 128 and 255 octets in length. This is the number of frames (including bad frames) transmitted that were between 256 and 511 octets in length. This is the number of frames (including bad frames) transmitted that were between 512 and 1023 octets in length. This is the number of frames (including bad frames) transmitted that were between 1024 and above in length. Upper 32-bit count of the number of received octets of data (including those in bad frames). Lower 32-bit count of the number of received octets of data (including those in bad frames). Upper 32-bit count of the number of transmitted octets of data (including those in bad frames). Lower 32-bit count of the number of transmitted octets of data (including those in bad frames). This is the number of frames received that were less than 64 octets long and with either a CRC error or an alignment error. This is the number of frames received that were greater than the maximum octets (specified for the system by the configuration software) long and with either a CRC error or an alignment error. This is the number of frames received that were of the proper size but with a CRC error and non-integral number of octets. This is the number of frames received that were of the proper size but experienced symbol error during frame reception. This is the number of good frames that were dropped because the violation of the switch security rules. This is the number of good frames that were dropped because the specified destination port does not belong to the VLAN domain. This is the number of frames received that were less than 64 octets long and without any CRC or alignment errors. This is the number of frames received that were greater than the maximum octets (specified for the system by the configuration software) long and without any CRC error or alignment errors. This is the number of frames transmitted that were greater than the maximum octets (specified for the system by the configuration software) long and without any CRC or alignment errors. The following parameters apply to both upstream and downstream VDSL. RxAlignErrors RxSymbolErrors SecurityDrops VLANDrops UndersizedPkt OversizedPkt TxOversizePkt VDSL Upstream/Downstream status System Maintenance 1 9-5 VES-1000 Series Ethernet Switch Table 9-2 Port Statistics FIELD Constellation DESCRIPTION Constellation shows the modulation method and speed. The constellations are QAM 4, QAM 8, QAM 16, QAM 64, QAM 256 where QAM (Quadrature Amplitude Modulation) defines how many bits there are per symbol; for example QAM 4 means 2 bits per symbol (22), QAM 8, 3 bits (23) per symbol and so on. [. . . ] xvi VDSL (Very high bit rate Digital Subscriber Line)1-1 VDSL Driver Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9 VDSL LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1 VDSL Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1, 5-3, 12-3 VDSL modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 VDSL Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]