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給阿骁兄的賀禮二: DNS 流量統計~超強版
再次感谢abel的分析,特别是对网友问题执着的回答,这一点,难能可贵。netman一样,也具备这种精神。
1、
- 所以?#93;法回答你的問?#125;,我猜是 windows 對 v6 的支援不夠所致
- 但我無法證明,建議您到一些有論 v6 較深的論壇去問問,不然到我們這邊也可以
- http://www.ipv6.org.tw
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你的建议是很好的,我对v6真可是一点也不通。只是工作还是不够专注。
2、
- 因為如 cpss 提到的,你的 query/response 並?#93;有很大,
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是的,Query/Response并不大,但的确ns1、ns2是chinanetcom即CNC
在南方某省的公网域名服务器。目前用户2万户左右。同时在线,我不清楚有多不少。
3、
- 1. 網路是否正常 ? Router/Switch/本機 都要看, 看 Error 是否會太多
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这个应该没问题。我先后在中电信、中网通,从事router/switch多年,对FreeBSD学习也有六年。
- 2. 同時間的流量是否有瓶頸,不見得是本機或現在的網路, 出口處也要多注意
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我们网络是China169(CNCnet)中的一部分,由于China169跟Sprint-globalone之间的出国带宽比较拥挤。与ChinaNet也是拥挤严重。以下是从ns1到root-server的时延。内容较多,详见附件一。
- 3. 各設備的系統狀況是否正常(CPU/MEMORY/device..)
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这个没有问题。我的ns1和ns2是FreeBSD 4.8 releases平台。
1G Ram, 1*cpu 2.0 Ghz 我设置的swsap根本没有用到。如ns1信息。
详见附件二。
4、
- 我猜這是dns 代管主機,而不是像一般 ISP 給 user 用的 DNS Server
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你猜错了。我的是ISP给user的DNS server。这一点不用怀疑。所以,我要
对用户负责。
5、
- 再來看, 查詢差不多,失敗也差不多,何解呢 !? 大概您置這兩台 Server 於
- 同一個 subnet 之下所致,應該在網路上適當的分隔,例如一台放在電信,一台放在
- 聯通,或許失敗量也不會這麼一致了.
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我的ns1与ns2分别在不同的城域网。举例假设ns1在台北,那么ns2就在高雄。当然不在同一个subnet了。并且ns1与ns2是2*pos 155互联。
6、
我的ns1和ns2都设置为recursion yes,并且,启用了internal-view和external-view。
7、补充
我刚看到你在线,如果你方便使用QQ的话,能否与我联络。我的QQ:86269149
- 附件一:
- %sh pingdns
- A.ROOT-SERVERS.NET
- PING 198.41.0.4 (198.41.0.4): 56 data bytes
- 64 bytes from 198.41.0.4: icmp_seq=0 ttl=238 time=336.644 ms
- --- 198.41.0.4 ping statistics ---
- 2 packets transmitted, 1 packets received, 50% packet loss
- round-trip min/avg/max/stddev = 336.644/336.644/336.644/0.000 ms
- B.ROOT-SERVERS.NET
- PING 192.228.79.201 (192.228.79.201): 56 data bytes
- --- 192.228.79.201 ping statistics ---
- 1 packets transmitted, 0 packets received, 100% packet loss
- C.ROOT-SERVERS.NET
- PING 192.33.4.12 (192.33.4.12): 56 data bytes
- 64 bytes from 192.33.4.12: icmp_seq=0 ttl=48 time=343.485 ms
- 64 bytes from 192.33.4.12: icmp_seq=1 ttl=48 time=351.860 ms
- --- 192.33.4.12 ping statistics ---
- 2 packets transmitted, 2 packets received, 0% packet loss
- round-trip min/avg/max/stddev = 343.485/347.673/351.860/4.188 ms
- D.ROOT-SERVERS.NET
- PING 128.8.10.90 (128.8.10.90): 56 data bytes
- 64 bytes from 128.8.10.90: icmp_seq=0 ttl=42 time=269.159 ms
- 64 bytes from 128.8.10.90: icmp_seq=1 ttl=42 time=268.628 ms
- --- 128.8.10.90 ping statistics ---
- 2 packets transmitted, 2 packets received, 0% packet loss
- round-trip min/avg/max/stddev = 268.628/268.894/269.159/0.265 ms
- E.ROOT-SERVERS.NET
- PING 192.203.230.10 (192.203.230.10): 56 data bytes
- --- 192.203.230.10 ping statistics ---
- 2 packets transmitted, 0 packets received, 100% packet loss
- F.ROOT-SERVERS.NET
- PING 192.5.5.241 (192.5.5.241): 56 data bytes
- 64 bytes from 192.5.5.241: icmp_seq=0 ttl=56 time=61.969 ms
- 64 bytes from 192.5.5.241: icmp_seq=1 ttl=56 time=53.861 ms
- --- 192.5.5.241 ping statistics ---
- 2 packets transmitted, 2 packets received, 0% packet loss
- round-trip min/avg/max/stddev = 53.861/57.915/61.969/4.054 ms
- G.ROOT-SERVERS.NET
- PING 192.112.36.4 (192.112.36.4): 56 data bytes
- --- 192.112.36.4 ping statistics ---
- 2 packets transmitted, 0 packets received, 100% packet loss
- H.ROOT-SERVERS.NET
- PING 128.63.2.53 (128.63.2.53): 56 data bytes
- 64 bytes from 128.63.2.53: icmp_seq=0 ttl=27 time=469.883 ms
- --- 128.63.2.53 ping statistics ---
- 2 packets transmitted, 1 packets received, 50% packet loss
- round-trip min/avg/max/stddev = 469.883/469.883/469.883/0.000 ms
- I.ROOT-SERVERS.NET
- PING 192.36.148.17 (192.36.148.17): 56 data bytes
- 64 bytes from 192.36.148.17: icmp_seq=0 ttl=44 time=422.592 ms
- 64 bytes from 192.36.148.17: icmp_seq=1 ttl=44 time=422.066 ms
- --- 192.36.148.17 ping statistics ---
- 2 packets transmitted, 2 packets received, 0% packet loss
- round-trip min/avg/max/stddev = 422.066/422.329/422.592/0.263 ms
- J.ROOT-SERVERS.NET
- PING 192.58.128.30 (192.58.128.30): 56 data bytes
- 64 bytes from 192.58.128.30: icmp_seq=0 ttl=245 time=448.464 ms
- 64 bytes from 192.58.128.30: icmp_seq=1 ttl=245 time=436.557 ms
- --- 192.58.128.30 ping statistics ---
- 2 packets transmitted, 2 packets received, 0% packet loss
- round-trip min/avg/max/stddev = 436.557/442.510/448.464/5.954 ms
- K.ROOT-SERVERS.NET
- PING 193.0.14.129 (193.0.14.129): 56 data bytes
- 64 bytes from 193.0.14.129: icmp_seq=0 ttl=45 time=342.935 ms
- 64 bytes from 193.0.14.129: icmp_seq=1 ttl=45 time=343.755 ms
- --- 193.0.14.129 ping statistics ---
- 2 packets transmitted, 2 packets received, 0% packet loss
- round-trip min/avg/max/stddev = 342.935/343.345/343.755/0.410 ms
- L.ROOT-SERVERS.NET
- PING 198.32.64.12 (198.32.64.12): 56 data bytes
- 64 bytes from 198.32.64.12: icmp_seq=0 ttl=53 time=197.546 ms
- 64 bytes from 198.32.64.12: icmp_seq=1 ttl=53 time=197.011 ms
- --- 198.32.64.12 ping statistics ---
- 2 packets transmitted, 2 packets received, 0% packet loss
- round-trip min/avg/max/stddev = 197.011/197.279/197.546/0.267 ms
- M.ROOT-SERVERS.NET
- PING 202.12.27.33 (202.12.27.33): 56 data bytes
- 64 bytes from 202.12.27.33: icmp_seq=0 ttl=243 time=502.941 ms
- 64 bytes from 202.12.27.33: icmp_seq=1 ttl=243 time=478.207 ms
- --- 202.12.27.33 ping statistics ---
- 2 packets transmitted, 2 packets received, 0% packet loss
- round-trip min/avg/max/stddev = 478.207/490.574/502.941/12.367 ms
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- 附件二:
- %top
- last pid: 97006; load averages: 0.00, 0.01, 0.00 up 530+17:46:55 14:08:41
- 19 processes: 2 running, 17 sleeping
- CPU states: 2.3% user, 0.0% nice, 0.9% system, 0.9% interrupt, 95.8% idle
- Mem: 376M Active, 213M Inact, 85M Wired, 68K Cache, 112M Buf, 330M Free
- Swap: 2000M Total, 2000M Free
- PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND
- 95497 bind 2 0 368M 368M select 41.6H 1.42% 1.42% named
- 97006 root 28 0 1872K 1104K RUN 0:00 2.07% 0.68% top
- 73 root 2 0 940K 536K select 38:05 0.00% 0.00% syslogd
- 84 root 2 0 3000K 1456K select 3:13 0.00% 0.00% sshd
- 82 root 10 0 1016K 620K nanslp 1:21 0.00% 0.00% cron
- 80 root 2 0 1088K 608K select 0:00 0.00% 0.00% inetd
- 96942 jsquan 28 0 5700K 2152K RUN 0:00 0.00% 0.00% sshd
- 96962 root 18 0 1308K 896K pause 0:00 0.00% 0.00% csh
- 96940 root 2 0 5700K 2024K sbwait 0:00 0.00% 0.00% sshd
- 96943 jsquan 18 0 1300K 892K pause 0:00 0.00% 0.00% csh
- 3659 root 3 0 944K 456K ttyin 0:00 0.00% 0.00% getty
- 3658 root 3 0 944K 456K ttyin 0:00 0.00% 0.00% getty
- 7769 root 3 0 944K 652K ttyin 0:00 0.00% 0.00% getty
- 111 root 3 0 944K 420K ttyin 0:00 0.00% 0.00% getty
- 108 root 3 0 944K 420K ttyin 0:00 0.00% 0.00% getty
- 112 root 3 0 944K 420K ttyin 0:00 0.00% 0.00% getty
- 113 root 3 0 944K 420K ttyin 0:00 0.00% 0.00% getty
- 110 root 3 0 944K 420K ttyin 0:00 0.00% 0.00% getty
- 23 root 18 0 208K 64K pause 0:00 0.00% 0.00% adjkerntz
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