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本帖最后由 Frank7258 于 20.12.2009 20:31 编辑
5 n! H9 f: I: s- N未必,视网络情况而定,自己ping一下就大概知道了* r1 C8 q0 u1 E
Google或者Open DNS至少属于最可靠的DNS之列 ...
$ i* N) f4 a% e) V) X2 k/ [fuchs 发表于 20/12/2009 00:09 ![]() " m4 H1 D" z- i& G9 H: n; ~
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这个速度差距还是比较明显的:
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1 y: q- h# J0 e) u- m: G& l6 Wping LRZ网内的DNS:
2 B) b2 b- N K) [$ u1 A. Ikan@kan-laptop:~$ ping 10.149.64.2 -c 5
, G6 L9 r, }2 M* Q! S5 gPING 10.149.64.2 (10.149.64.2) 56(84) bytes of data.' m- ]( ?, K8 H+ d3 I! \
64 bytes from 10.149.64.2: icmp_seq=1 ttl=62 time=0.497 ms
& K* w! E( m8 g8 U64 bytes from 10.149.64.2: icmp_seq=2 ttl=62 time=0.379 ms+ z% K# N& O, n4 ~# Q4 p
64 bytes from 10.149.64.2: icmp_seq=3 ttl=62 time=0.337 ms
; U+ \2 t, c' p# s0 q64 bytes from 10.149.64.2: icmp_seq=4 ttl=62 time=0.380 ms6 z$ w5 X) \( ^" I% O7 L# C2 R* L2 p
64 bytes from 10.149.64.2: icmp_seq=5 ttl=62 time=0.522 ms# ]# ]6 a' g5 @* ]- c( \; S* V
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--- 10.149.64.2 ping statistics ---
- d* P7 p- F& n# X5 packets transmitted, 5 received, 0% packet loss, time 4004ms
9 u$ u. a- a+ r, q, brtt min/avg/max/mdev = 0.337/0.423/0.522/0.072 ms , q! s5 q! D6 J8 L
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ping Google DNS:/ h y* a Z1 N% g1 b2 O; B x
kan@kan-laptop:~$ ping 8.8.8.8 -c 5+ C7 w; ]& ?1 i0 i7 K4 @; f
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.# {- Y$ n1 m2 n1 {
64 bytes from 8.8.8.8: icmp_seq=1 ttl=241 time=15.7 ms7 H8 w( j- \$ X5 N5 t
64 bytes from 8.8.8.8: icmp_seq=2 ttl=241 time=21.0 ms
4 u. y+ L& K1 y/ \; q64 bytes from 8.8.8.8: icmp_seq=3 ttl=241 time=19.6 ms
, g% |( G+ ~( y9 Z# p5 p3 g4 M8 B% ^64 bytes from 8.8.8.8: icmp_seq=4 ttl=241 time=18.7 ms
y; g: |6 f' [# U64 bytes from 8.8.8.8: icmp_seq=5 ttl=241 time=15.2 ms2 k' S4 x5 A" q5 i7 |. h& F2 V; _
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--- 8.8.8.8 ping statistics ---, k. C6 r. Q9 R2 H' d' Z0 k
5 packets transmitted, 5 received, 0% packet loss, time 4006ms
6 H# m- U9 L. L8 e7 V2 ^$ Irtt min/avg/max/mdev = 15.253/18.097/21.016/2.232 ms
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traceroute 8.8.8.8
" Y1 m3 _6 K# Nkan@kan-laptop:~$ sudo tracert 8.8.8.85 A( q9 B5 E2 g6 w& p; a6 |
traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets
% Z8 v* C% r+ S! r3 @! F$ r 1 10.149.71.86 (10.149.71.86) 6.920 ms 6.918 ms *. `+ V. t0 W( r; s
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0 c' }3 b+ m6 L* l5 G1 |3 | 6 * natomat1-int.lrz-muenchen.de (138.246.99.4) 3.815 ms 3.650 ms
7 S4 O$ T' c/ ?- z3 |: @' [ 7 vl-392.csr1-2wr.lrz-muenchen.de (138.246.99.29) 4.096 ms 4.117 ms 4.115 ms. x; J7 M0 Z1 J. J% h
8 xr-gar1-te1-3-147.x-win.dfn.de (188.1.37.89) 4.806 ms 5.039 ms *
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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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