【求助】我的網路出問題了嗎?

[Timothy]

最近覺得網路有點怪怪的, 網頁常常不能正常下載, 連寄信都會出錯.
底下是 TRACE 的結果. 第1個就出三個*. 是什麼問題呢?

Tracing route to www.seed.net.tw [192.72.80.36]
over a maximum of 30 hops:

  1     *        *        *     Request timed out.
  2    63 ms    59 ms    59 ms  sw68-83-1.adsl.seed.net.tw [210.68.83.1] 
  3    64 ms    60 ms    72 ms  sj235-66.dialup.seed.net.tw [139.175.235.66] 
  4    64 ms    66 ms    66 ms  www.seed.net.tw [192.72.80.36] 

Trace complete.

[Timothy]

TRACE PCZONE 的結果

Tracing route to www.pczone.com.tw [202.43.85.163]
over a maximum of 30 hops:

  1     *        *        *     Request timed out.
  2    61 ms    59 ms    60 ms  sw68-83-1.adsl.seed.net.tw [210.68.83.1] 
  3    65 ms    59 ms    60 ms  sj235-66.dialup.seed.net.tw [139.175.235.66] 
  4    60 ms    60 ms    59 ms  R56-66.seed.net.tw [139.175.56.66] 
  5    60 ms    60 ms    59 ms  h34-192-72-123.seed.net.tw [192.72.123.34] 
  6    61 ms    67 ms    65 ms  211.78.151.194 
  7    61 ms    61 ms    62 ms  202.43.65.122 
  8     *        *        *     Request timed out.
  9     *        *        *     Request timed out.
 10     *        *        *     Request timed out.
 11     *        *        *     Request timed out.
 12     *        *        *     Request timed out.
 13     *        *        *     Request timed out.
 14     *        *        *     Request timed out.
 15     *        *        *     Request timed out.
 16     *        *        *     Request timed out.
 17     *        *        *     Request timed out.
 18     *        *        *     Request timed out.
 19     *        *        *     Request timed out.
 20     *        *        *     Request timed out.
 21     *        *        *     Request timed out.
 22     *        *        *     Request timed out.
 23     *        *        *     Request timed out.
 24     *        *        *     Request timed out.
 25     *        *        *     Request timed out.
 26     *        *        *     Request timed out.
 27     *        *        *     Request timed out.
 28     *        *        *     Request timed out.
 29     *        *        *     Request timed out.
 30     *        *        *     Request timed out.

Trace complete.

[yojean]

是不是有些節點把ping鎖起來啦?
所以才會request timeout呢

[Timothy]

鎖起有什麼作用呢? 不解.

我架了一個FTP, 以前LIST很順, 現在卻慢到有時會斷掉. 不知道什麼原因.
所以才會再 TRACE 一下網路, 結果發現, 第一個 HOP 就出現 * 了.

[Schnaufer]

　　ICMP 的功能蠻強大的，不論是對正常使用者還是有心人士，有時候為了安全就要犧牲一下方便性。

[Timothy]

這是由網路服務端(SEEDNET)來做, 還是網路線路提供端(HIFLY)來做.
鎖PING之後, 會不會有什麼影響? 例如速度. 或是網路反應速度.

[Joes]

詳細的說明請看以下連結(ICMP基礎):
http://www.fanqiang.com/a3/b3/20010604/121000342_b.html

[speed101]

把數據整個貼到客戶服務的留言中，包含seednet網頁測速結果，約一兩天內就會有人跟您聯絡狀況了

你的狀況比我當時還輕的多了~~^^