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本帖最后由 Frank7258 于 20.12.2009 20:31 编辑
' K& k5 M* [2 i6 l, l$ ~0 O未必,视网络情况而定,自己ping一下就大概知道了
4 D5 o; P: R/ \: G2 w$ `! sGoogle或者Open DNS至少属于最可靠的DNS之列 ...
7 W" m: z7 _, e8 B1 h: Jfuchs 发表于 20/12/2009 00:09 ![]()
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! M4 o) E2 A! w+ w1 N这个速度差距还是比较明显的:% l( [( _+ B0 w1 w
0 n) q d! _6 Iping LRZ网内的DNS:
6 Z! @! j9 d8 g5 G( F9 D) L% Ykan@kan-laptop:~$ ping 10.149.64.2 -c 5% E8 o- u0 Z" F, L' S
PING 10.149.64.2 (10.149.64.2) 56(84) bytes of data.
5 m4 _$ P! S( _+ D64 bytes from 10.149.64.2: icmp_seq=1 ttl=62 time=0.497 ms( \8 U( Q& w# o8 X
64 bytes from 10.149.64.2: icmp_seq=2 ttl=62 time=0.379 ms
* G9 ^: `# \7 g& o8 j, W) ]5 S7 ] {9 }64 bytes from 10.149.64.2: icmp_seq=3 ttl=62 time=0.337 ms
, [" R: F; _1 F- u64 bytes from 10.149.64.2: icmp_seq=4 ttl=62 time=0.380 ms
5 G* @# F- q4 z" y64 bytes from 10.149.64.2: icmp_seq=5 ttl=62 time=0.522 ms
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* {7 V' F5 I' B- B# C h5 T--- 10.149.64.2 ping statistics ---
2 F' u8 V1 q% N' Z. g* d- [" r5 packets transmitted, 5 received, 0% packet loss, time 4004ms
) ?/ `/ ~2 _) b- Krtt min/avg/max/mdev = 0.337/0.423/0.522/0.072 ms
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( I! x" d) [& B6 v# A1 Uping Google DNS:' W8 z; z' Y0 b u. M' `# I& j8 \) |
kan@kan-laptop:~$ ping 8.8.8.8 -c 5
( m% u6 h* C! E- v. vPING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
+ m( y# s" o0 ~" i8 n7 A5 Q& @64 bytes from 8.8.8.8: icmp_seq=1 ttl=241 time=15.7 ms2 t' c- N/ O" K. X
64 bytes from 8.8.8.8: icmp_seq=2 ttl=241 time=21.0 ms
' P" I& l; @7 M( l3 w! B64 bytes from 8.8.8.8: icmp_seq=3 ttl=241 time=19.6 ms% I) H$ g2 N$ U" q: |
64 bytes from 8.8.8.8: icmp_seq=4 ttl=241 time=18.7 ms D6 U0 n5 k: f8 H% P
64 bytes from 8.8.8.8: icmp_seq=5 ttl=241 time=15.2 ms
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/ V0 B9 k* s7 z% M--- 8.8.8.8 ping statistics ---2 S$ T- J8 W! j, k9 l2 L
5 packets transmitted, 5 received, 0% packet loss, time 4006ms* e# c/ n5 Q. g( T3 s
rtt min/avg/max/mdev = 15.253/18.097/21.016/2.232 ms # v. u, F* d+ p/ [$ }# P
8 G& |8 B3 C( U0 l; _traceroute 8.8.8.8# y) N9 a( j( \7 y8 e
kan@kan-laptop:~$ sudo tracert 8.8.8.83 x6 T. y5 U! w0 p
traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets
8 v. e+ t: }, w8 \' A 1 10.149.71.86 (10.149.71.86) 6.920 ms 6.918 ms *
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6 * natomat1-int.lrz-muenchen.de (138.246.99.4) 3.815 ms 3.650 ms. O$ f9 p! p7 a6 J- D5 V* \: L& q* X
7 vl-392.csr1-2wr.lrz-muenchen.de (138.246.99.29) 4.096 ms 4.117 ms 4.115 ms( H- g0 _8 b) S! U& i
8 xr-gar1-te1-3-147.x-win.dfn.de (188.1.37.89) 4.806 ms 5.039 ms *$ i& A- C. v# ]: l
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14 google-public-dns-a.google.com (8.8.8.8) 14.428 ms 13.395 ms 14.635 ms |
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