지금까지 Cloudflare ICN이라고 좋아했는데, 마냥 좋아할일만은 아닌것 같아요.
몇일동안 종종 모니터링 해왔는데 SK회선에서 ICN으로 흘러가는 패킷이 희한하게 흘러갑니다.
KT의 좋은 예
My traceroute [v0.86] Mon Oct 26 01:35:19 2015
Keys: Help Display mode Restart statistics Order of fields quit
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. 192.168.0.1 0.0% 30 1.8 1.9 1.5 2.4 0.0
2. 222.98.47.129 0.0% 30 6.9 6.8 5.2 8.3 0.8
3. 210.91.121.137 0.0% 30 4.5 4.5 2.7 6.8 0.7
4. 125.141.249.32 0.0% 30 4.4 17.0 2.7 73.7 20.8
5. 112.189.74.121 0.0% 30 4.7 8.2 3.3 68.8 12.4
6. 220.78.135.177 0.0% 30 5.8 5.9 3.9 8.5 1.0
7. 112.174.55.61 0.0% 30 5.3 6.3 3.1 9.2 1.3
8. 112.174.34.186 0.0% 30 4.7 6.4 2.9 39.3 6.4
9. 128.134.40.130 0.0% 30 6.2 6.0 5.0 8.3 0.5
10. 190.93.246.228 0.0% 29 5.4 4.9 3.9 7.1 0.5
평균 약 5ms
SK에서의 나쁜 예
mtr namu.wiki
My traceroute [v0.86] Mon Oct 26 01:40:46 2015
Keys: Help Display mode Restart statistics Order of fields quit
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. 172.20.10.1 0.0% 18 47.3 7.4 1.8 47.3 13.9
2. ???
3. 172.28.137.75 0.0% 18 34.5 49.4 31.1 134.8 29.5
4. 172.28.137.89 0.0% 18 38.2 39.1 29.9 55.9 7.2
5. 172.28.132.133 0.0% 18 32.3 39.4 30.0 77.5 11.5
6. 113.217.228.45 0.0% 17 29.9 39.0 29.9 53.5 6.7
7. 113.217.228.153 0.0% 17 38.0 40.6 33.3 66.7 7.6
8. 58.123.218.153 0.0% 17 43.0 43.1 34.3 58.7 6.8
9. 221.139.249.190 0.0% 17 332.6 317.2 303.8 362.3 16.7 SK
10. 203.192.164.158 0.0% 17 307.1 311.3 303.6 345.7 10.8 PACNET
11. 198.41.190.206 0.0% 17 304.8 306.0 297.7 324.9 7.6 Cloudflare
mtr cdn.jsdelivr.net.cdn.cloudflare.net
My traceroute [v0.86] Mon Oct 26 01:36:48 2015
Keys: Help Display mode Restart statistics Order of fields quit
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. 172.20.10.1 0.0% 35 2.8 10.6 1.6 135.7 25.5
2. ???
3. 172.28.29.195 0.0% 34 36.3 68.2 29.5 430.9 85.0
4. 172.28.137.89 0.0% 34 37.2 63.5 31.3 365.1 73.9
5. 172.28.132.133 0.0% 34 43.5 64.6 21.5 301.9 76.9
6. 113.217.228.37 0.0% 34 30.5 64.0 30.3 335.4 73.8
7. 113.217.228.169 0.0% 34 36.1 62.6 29.7 322.6 73.6
8. 58.123.35.189 0.0% 34 34.7 62.0 31.6 304.9 62.6
9. 219.249.157.2 0.0% 34 356.5 338.9 295.8 702.2 93.1 SK
10. 202.147.8.117 0.0% 34 305.9 325.6 295.9 560.2 66.0 PACNET
11. 203.192.164.158 0.0% 34 312.3 331.7 298.7 559.2 57.7 PACNET
12. 190.93.246.228 0.0% 34 311.9 330.2 300.3 565.7 68.0 Cloudflare
평균 330ms
https://cdn.jsdelivr.net/cdn-cgi/trace (hosts파일 조작으로 연결)
https://namu.wiki/cdn-cgi/trace
fl=34f23 h=namu.wiki ip=223.62.xxx.xxx ts=1445791115.345 visit_scheme=https uag=*** colo=ICN spdy=3.1 loc=KR
인천으로 연결된다고 좋아할일이 아닌것 같아요. 중요한건 어떤 과정으로 연결되느냐 까지 살펴 볼 필요가 있는것 같네요.
SK의 경우 인천으로 연결되어도, ping 값으로 약 330ms 정도가 나온걸로 추정컨데, 한국-미국-한국으로 연결되는것 같네요 ㅡㅡ
홍콩으로 연결되는게 더 빨라요
mtr ilwar.com
My traceroute [v0.86] Mon Oct 26 01:48:04 2015
Keys: Help Display mode Restart statistics Order of fields quit
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. 172.20.10.1 0.0% 169 1.8 3.0 1.7 42.4 4.8
2. ???
3. 172.28.29.203 0.0% 169 37.4 36.5 25.7 126.9 8.8
4. 172.28.137.89 0.0% 169 22.0 35.6 21.6 65.3 6.5
5. 172.28.132.133 0.0% 168 31.1 37.1 29.9 87.2 7.0
6. 113.217.228.49 0.0% 168 36.1 36.0 25.2 65.7 6.0
7. 113.217.228.173 0.0% 168 31.4 37.1 25.1 91.8 7.4
8. 1.255.25.93 0.0% 168 40.5 39.0 24.8 73.1 5.8
9. 219.249.157.2 0.0% 168 297.0 303.8 291.1 373.7 12.3 SK
10. xe-0-0-0.0.gw2.hkg9.asianetcom.net 0.0% 168 341.8 345.4 332.3 403.3 8.9 PACNET
11. CDF-0002.gw1.hkg4.asianetcom.net 0.0% 168 238.1 235.8 221.2 297.7 10.0 PACNET
12. 104.24.126.72 0.0% 168 230.8 240.5 230.8 319.4 11.4 PACNEt
평균 230ms
- 요약 -
Cloudflare 한국으로 연결됬다고 좋아하지 말고, 패킷이 어떻게 흘러가는지 까지 확인화자.
PC의 25%와 모바일의 50% 가까이를 점유하는 SK회선은 인천으로 접속되도 해외로 연결되는것보다 (중간 연결과정이 해외를 경유(한국-미국-한국) 하는것으로 추정되기에) 훨씬 더 느리다. (최근 1주일간 테스트 결과)
