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Òåêñò ñîîáùåíèÿ	<img src="http://www.svpribor.ru/images/p4.jpg" width="150" height="112"> Äîáðûé äåíü. Èíòåðåñóþùèé Âàñ ôóíêöèîíàë íå ðåàëèçîâàí â ïðèáîðå "LAN Test". "LAN Test" ïðåäíàçíà÷åí â ïåðâóþ î÷åðåäü äëÿ ïîèñêà íåèñïðàâíîñòåé â ëîêàëüíûõ âû÷èñëèòåëüíûõ ñåòÿõ (ËÂÑ), ïîñòðîåííûõ ïî òåõíîëîãèè Ethernet 10/100BASE-TX. À âîò â ïðèáîðå "Òåñòåð ADSL" (âî âñåõ åãî ðàçíîâèäíîñòÿõ) åñòü èíòåðåñíûé ðåæèì "LAN - ping". Ðàáîòàÿ â ýòîì ðåæèìå, ïðèáîð âûïîëíÿåò ðÿä ôóíêöèè: - îòïðàâëÿåò çàïðîñû (ICMP Echo-Request) ïðîòîêîëà ICMP ëîêàëüíîìó èëè óäàëåííîìó óçëó Ethernet-ñåòè è ôèêñèðóåò ïîñòóïàþùèå îòâåòû (ICMP Echo-Reply). Óçåë àäðåñóåòñÿ IP-àäðåñîì èëè äîìåííûì èìåíåì â âèäå ñòðîêè - îñóùåñòâëÿåò ïîèñê âñåõ àêòèâíûõ óçëîâ â Ethernet-ñåòè è ñîõðàíÿåò ïîëó÷åííûé ñïèñîê äëÿ äàëüíåéøåãî ïðîñìîòðà. Èñïîëüçóåòñÿ äèàïàçîí IP-àäðåñîâ. - ïðîâåðÿåò äåéñòâèå ìåõàíèçìà ïðåîáðàçîâàíèÿ äîìåííûõ èìåí è âîçìîæíîñòü ñâÿçè ÷åðåç ìàðøðóòèçàòîð - îïðåäåëÿåò 4 îñíîâíûõ ïàðàìåòðà äëÿ óêàçàííîãî QoS (êëàññà êà÷åñòâà îáñëóæèâàíèÿ): --- ñðåäíÿÿ çàäåðæêà ïàêåòîâ (IPTD - IP Packet Time Delay) --- âàðèàöèÿ çàäåðæêè ïàêåòîâ (äæèòòåð) (IPDV - IP Packet Delay Variation) --- âåðîÿòíîñòü ïîòåðè ïàêåòà (IPLR - IP Packet Lost Rate) --- âåðîÿòíîñòü îøèáî÷íîé ïåðåäà÷è ïàêåòà (IPER - IP Packet Error Rate) Åñëè æå â ïðèáîðå íàñòðîèòü è óñòàíîâèòü WAN-ñîåäèíåíèå òèïà PPPoE, òî, ïîäêëþ÷èâ ê íåìó ÏÊ, ìîæíî ëþáûìè ñðåäñòâàìè òåñòèðîâàíèÿ îïðåäåëÿòü íå òîëüêî êà÷åñòâî, íî è ñêîðîñòü ñîåäèíåíèÿ. Óñïåõîâ.
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