6月 232014
 

美国FDC西雅图机房到阿里云香港节点路由

[root@mon-sea ~]$ tracepath 58.96.169.52
1: mon-sea (192.240.101.xxx) 0.167ms pmtu 1500
1: 50.7.72.129 (50.7.72.129) 5.492ms
1: 50.7.72.129 (50.7.72.129) 0.969ms
2: ae1.mpr1.sea1.us.above.net (208.184.53.193) 0.462ms
3: ae10.cr1.sjc2.us.above.net (64.125.21.25) 17.555ms
4: ae6.mpr1.pao1.us.above.net (64.125.31.46) 18.233ms
5: ge-0-0-1.0.ejr02.pao001.flagtel.com (198.32.176.137) 18.799ms asymm 6
6: so-0-1-1.0.pjr01.wad001.flagtel.com (62.216.128.2) 170.897ms asymm 13
7: ge-0-3-0.0.pjr02.hkg005.flagtel.com (85.95.26.89) 172.159ms asymm 12
8: so-5-0-0.0.cjr04.hkg003.flagtel.com (85.95.25.214) 174.487ms
9: xe-2-2-0.0.cji02.hkg003.flagtel.com (62.216.128.102) 172.114ms asymm 10
10: 80.77.0.198 (80.77.0.198) 170.967ms
11: 202.123.74.121 (202.123.74.121) 172.332ms
12: 58.96.160.245 (58.96.160.245) 171.111ms
13: 58.96.160.234 (58.96.160.234) 172.061ms
14: 58.96.160.241 (58.96.160.241) 170.377ms asymm 13
15: no reply
16: 58.96.169.52 (58.96.169.52) 171.787ms !H
Resume: pmtu 1500
[root@mon-sea ~]$
[root@mon-sea ~]$ ping -c 8 58.96.169.52

延时

PING 58.96.169.52 (58.96.169.52) 56(84) bytes of data.
64 bytes from 58.96.169.52: icmp_seq=1 ttl=52 time=171 ms
64 bytes from 58.96.169.52: icmp_seq=2 ttl=52 time=174 ms
64 bytes from 58.96.169.52: icmp_seq=3 ttl=52 time=172 ms
64 bytes from 58.96.169.52: icmp_seq=4 ttl=52 time=171 ms
64 bytes from 58.96.169.52: icmp_seq=5 ttl=52 time=173 ms
64 bytes from 58.96.169.52: icmp_seq=6 ttl=52 time=182 ms
64 bytes from 58.96.169.52: icmp_seq=7 ttl=52 time=183 ms
64 bytes from 58.96.169.52: icmp_seq=8 ttl=52 time=172 ms

— 58.96.169.52 ping statistics —
8 packets transmitted, 8 received, 0% packet loss, time 7183ms
rtt min/avg/max/mdev = 171.109/175.191/183.139/4.566 ms
[root@mon-sea ~]$

美国FDC洛杉矶机房到阿里云香港节点路由

[root@mon-lax ~]$ tracepath 58.96.169.52
1: mon-lax (50.7.103.xx) 0.165ms pmtu 1500
1: 50.7.102.201 (50.7.102.201) 1.236ms
1: 50.7.102.201 (50.7.102.201) 0.918ms
2: ae1.er3.lax112.us.above.net (208.184.110.153) 0.452ms
3: ae6.cr1.lax112.us.above.net (64.125.20.221) 0.493ms
4: ae1.cr2.sjc2.us.above.net (64.125.31.233) 10.502ms
5: ae3.cr1.sjc2.us.above.net (64.125.26.26) 8.720ms asymm 4
6: ae6.mpr1.pao1.us.above.net (64.125.31.46) 9.541ms asymm 5
7: ge-0-0-1.0.ejr02.pao001.flagtel.com (198.32.176.137) 9.959ms
8: so-0-1-1.0.pjr01.wad001.flagtel.com (62.216.128.2) 161.433ms asymm 14
9: ge-0-3-0.0.pjr02.hkg005.flagtel.com (85.95.26.89) 183.356ms asymm 13
10: so-5-0-0.0.cjr04.hkg003.flagtel.com (85.95.25.214) 166.270ms asymm 9
11: xe-2-2-0.0.cji02.hkg003.flagtel.com (62.216.128.102) 161.535ms
12: 80.77.0.198 (80.77.0.198) 164.378ms asymm 11
13: 202.123.74.121 (202.123.74.121) 179.274ms asymm 12
14: 58.96.160.245 (58.96.160.245) 162.333ms asymm 13
15: 58.96.160.234 (58.96.160.234) 166.776ms asymm 13
16: 58.96.160.241 (58.96.160.241) 161.198ms asymm 14
17: no reply
18: 58.96.169.52 (58.96.169.52) 161.058ms !H
Resume: pmtu 1500
[root@mon-lax ~]$
[root@mon-lax ~]$ ping -c 8 58.96.169.52
PING 58.96.169.52 (58.96.169.52) 56(84) bytes of data.
64 bytes from 58.96.169.52: icmp_seq=1 ttl=51 time=161 ms
64 bytes from 58.96.169.52: icmp_seq=2 ttl=51 time=163 ms
64 bytes from 58.96.169.52: icmp_seq=3 ttl=51 time=161 ms
64 bytes from 58.96.169.52: icmp_seq=4 ttl=51 time=162 ms
64 bytes from 58.96.169.52: icmp_seq=5 ttl=51 time=162 ms
64 bytes from 58.96.169.52: icmp_seq=6 ttl=51 time=164 ms
64 bytes from 58.96.169.52: icmp_seq=7 ttl=51 time=162 ms
64 bytes from 58.96.169.52: icmp_seq=8 ttl=51 time=162 ms

— 58.96.169.52 ping statistics —
8 packets transmitted, 8 received, 0% packet loss, time 7171ms
rtt min/avg/max/mdev = 161.219/162.574/164.032/0.949 ms
[root@mon-lax ~]$

阿里云北京节点到香港节点路由

[root@AY1405192126447871b3Z ~]# tracepath 58.96.169.52
1: 182.92.x.xx (182.92.x.xx) 0.124ms pmtu 1500
1: 182.92.3.249 (182.92.3.249) 0.490ms
1: 182.92.3.249 (182.92.3.249) 0.494ms
2: 10.106.128.34 (10.106.128.34) 0.474ms
3: 10.255.32.114 (10.255.32.114) 3.658ms
4: 180.149.140.33 (180.149.140.33) 2.347ms asymm 5
5: 180.149.128.101 (180.149.128.101) 4.384ms
6: 180.149.128.113 (180.149.128.113) 7.684ms
7: 202.97.53.102 (202.97.53.102) 3.716ms asymm 8
8: 202.97.53.234 (202.97.53.234) 4.918ms asymm 9
9: 202.97.61.54 (202.97.61.54) 41.146ms
10: no reply
11: 0.ge-6-0-2-XT3.HKG2.Alter.Net (210.80.3.109) 55.096ms asymm 12
12: 0.gigabitethernet6-0-0.GW9.HKG2.Alter.Net (210.80.3.74) 38.709ms asymm 13
13: towngastelecom-gw.customer.alter.net (202.130.165.14) 44.837ms
14: 202.123.74.121 (202.123.74.121) 73.009ms asymm 15
15: 58.96.160.245 (58.96.160.245) 49.868ms asymm 14
16: 58.96.160.234 (58.96.160.234) 48.499ms
17: 58.96.160.241 (58.96.160.241) 45.385ms asymm 16
18: no reply
19: 58.96.169.52 (58.96.169.52) 47.707ms !H
Resume: pmtu 1500
[root@AY1405192126447871b3Z ~]#

[root@AY1405192126447871b3Z ~]# ping -c 8 58.96.169.52
PING 58.96.169.52 (58.96.169.52) 56(84) bytes of data.
64 bytes from 58.96.169.52: icmp_seq=1 ttl=48 time=44.8 ms
64 bytes from 58.96.169.52: icmp_seq=2 ttl=48 time=43.1 ms
64 bytes from 58.96.169.52: icmp_seq=3 ttl=48 time=42.4 ms
64 bytes from 58.96.169.52: icmp_seq=4 ttl=48 time=42.7 ms
64 bytes from 58.96.169.52: icmp_seq=5 ttl=48 time=46.6 ms
64 bytes from 58.96.169.52: icmp_seq=6 ttl=48 time=52.2 ms
64 bytes from 58.96.169.52: icmp_seq=7 ttl=48 time=44.3 ms
64 bytes from 58.96.169.52: icmp_seq=8 ttl=48 time=46.4 ms

— 58.96.169.52 ping statistics —
8 packets transmitted, 8 received, 0% packet loss, time 7057ms
rtt min/avg/max/mdev = 42.412/45.364/52.299/3.021 ms
[root@AY1405192126447871b3Z ~]#

未优化路由的路由跟踪绕道日本

[harveymei@monitor ~]$ tracepath 58.96.169.52
 1: 182.92.x.xx (182.92.x.xx) 0.115ms pmtu 1500
 1: 182.92.3.249 (182.92.3.249) 0.536ms 
 1: 182.92.3.249 (182.92.3.249) 0.697ms 
 2: 10.106.128.58 (10.106.128.58) 0.527ms 
 3: 10.255.32.110 (10.255.32.110) 1.505ms 
 4: 180.149.140.41 (180.149.140.41) 0.448ms asymm 5 
 5: 202.106.35.189 (202.106.35.189) 5.312ms 
 6: 180.149.128.9 (180.149.128.9) 3.736ms asymm 7 
 7: 202.97.53.34 (202.97.53.34) 3.659ms asymm 8 
 8: 219.158.101.34 (219.158.101.34) 5.899ms asymm 7 
 9: p64-7-0-1.r21.tokyjp05.jp.bb.gin.ntt.net (129.250.66.53) 60.465ms asymm 10 
10: ae-0.r25.tokyjp05.jp.bb.gin.ntt.net (129.250.6.200) 62.278ms asymm 11 
11: ae-8.r25.tokyjp05.jp.bb.gin.ntt.net (129.250.3.157) 50.973ms 
12: ae-1.r01.tokyjp03.jp.bb.gin.ntt.net (129.250.6.166) 124.612ms asymm 13 
13: xe-0-0-0-13.r01.tokyjp03.jp.ce.gin.ntt.net (61.213.160.222) 122.828ms asymm 14 
14: ge-1-1-0.0.pjr02.wad001.flagtel.com (85.95.26.117) 105.993ms asymm 21 
15: so-5-0-0.0.cjr04.hkg003.flagtel.com (85.95.25.214) 173.519ms asymm 18 
16: so-5-0-0.0.cjr04.hkg003.flagtel.com (85.95.25.214) 175.549ms asymm 18 
17: 80.77.0.198 (80.77.0.198) 265.257ms asymm 14 
18: 202.123.74.121 (202.123.74.121) 243.866ms asymm 13 
19: 202.123.74.121 (202.123.74.121) 239.736ms asymm 13 
20: 58.96.160.245 (58.96.160.245) 248.474ms asymm 15 
21: 58.96.169.52 (58.96.169.52) 254.868ms !H
 Resume: pmtu 1500 
[harveymei@monitor ~]$

本地台式机

root@root-desktop:~$ tracepath 58.96.169.52
1: root-desktop.local 0.125ms pmtu 1500
1: 192.168.1.254 1.021ms
1: 192.168.1.254 0.987ms
2: 183.49.125.243 1.122ms pmtu 1492
2: 183.49.124.1 5.230ms
3: 113.106.37.85 2.703ms
4: 121.15.179.54 3.779ms asymm 5
5: 121.34.242.250 9.189ms
6: 202.97.33.206 6.939ms
7: 202.97.60.70 131.812ms
8: 202.97.61.22 77.714ms
9: no reply
10: 0.ge-6-0-2-XT3.HKG2.Alter.Net 14.852ms asymm 11
11: 0.gigabitethernet6-0-0.GW9.HKG2.Alter.Net 11.380ms
12: towngastelecom-gw.customer.alter.net 18.089ms
13: 202.123.74.121 18.825ms
14: 58.96.160.245 117.302ms asymm 13
15: 58.96.160.234 18.335ms
16: 58.96.160.241 29.325ms asymm 15
17: no reply
18: 58.96.169.52 16.126ms !H
Resume: pmtu 1492
root@root-desktop:~$

 

root@root-desktop:~$ ping -c 8 58.96.169.52
PING 58.96.169.52 (58.96.169.52) 56(84) bytes of data.
64 bytes from 58.96.169.52: icmp_req=1 ttl=50 time=17.4 ms
64 bytes from 58.96.169.52: icmp_req=2 ttl=50 time=14.8 ms
64 bytes from 58.96.169.52: icmp_req=3 ttl=50 time=25.4 ms
64 bytes from 58.96.169.52: icmp_req=4 ttl=50 time=21.1 ms
64 bytes from 58.96.169.52: icmp_req=5 ttl=50 time=18.8 ms
64 bytes from 58.96.169.52: icmp_req=6 ttl=50 time=28.1 ms
64 bytes from 58.96.169.52: icmp_req=7 ttl=50 time=14.4 ms
64 bytes from 58.96.169.52: icmp_req=8 ttl=50 time=16.0 ms

— 58.96.169.52 ping statistics —
8 packets transmitted, 8 received, 0% packet loss, time 7011ms
rtt min/avg/max/mdev = 14.414/19.566/28.197/4.716 ms
root@root-desktop:~$

 

[root@VM_27_135_centos ~]# ping -c 8 58.96.169.52
PING 58.96.169.52 (58.96.169.52) 56(84) bytes of data.
64 bytes from 58.96.169.52: icmp_seq=1 ttl=45 time=16.1 ms
64 bytes from 58.96.169.52: icmp_seq=2 ttl=45 time=16.4 ms
64 bytes from 58.96.169.52: icmp_seq=3 ttl=45 time=16.9 ms
64 bytes from 58.96.169.52: icmp_seq=4 ttl=45 time=16.2 ms
64 bytes from 58.96.169.52: icmp_seq=5 ttl=45 time=20.2 ms
64 bytes from 58.96.169.52: icmp_seq=6 ttl=45 time=16.8 ms
64 bytes from 58.96.169.52: icmp_seq=7 ttl=45 time=17.8 ms
64 bytes from 58.96.169.52: icmp_seq=8 ttl=45 time=16.3 ms

— 58.96.169.52 ping statistics —
8 packets transmitted, 8 received, 0% packet loss, time 7027ms
rtt min/avg/max/mdev = 16.134/17.120/20.225/1.292 ms
[root@VM_27_135_centos ~]#

6月 202014
 

腾讯云主机最低配置CPU信息 Xeon X3440 2.53Ghz主频 4MB缓存

[root@VM_27_135_centos ~]# cat /proc/cpuinfo
 processor : 0
 vendor_id : GenuineIntel
 cpu family : 6
 model : 30
 model name : Intel(R) Xeon(R) CPU X3440 @ 2.53GHz
 stepping : 5
 cpu MHz : 2526.998
 cache size : 4096 KB
 physical id : 0
 siblings : 1
 core id : 0
 cpu cores : 1
 apicid : 0
 initial apicid : 0
 fpu : yes
 fpu_exception : yes
 cpuid level : 11
 wp : yes
 flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc up arch_perfmon rep_good unfair_spinlock pni ssse3 cx16 sse4_1 sse4_2 popcnt hypervisor lahf_lm
 bogomips : 5053.99
 clflush size : 64
 cache_alignment : 64
 address sizes : 40 bits physical, 48 bits virtual
 power management:

阿里云主机最低配置CPU信息
[root@AY1405192126447871b3Z ~]# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 45
model name : Intel(R) Xeon(R) CPU E5-2430 0 @ 2.20GHz
stepping : 7
cpu MHz : 2200.095
cache size : 15360 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 1
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush mmx fxsr sse sse2 ht syscall nx lm up rep_good unfair_spinlock pni ssse3 cx16 sse4_1 sse4_2 popcnt aes hypervisor lahf_lm
bogomips : 4400.19
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:

[root@AY1405192126447871b3Z ~]#

查看demsg确认使用的虚拟化技术平台
[root@VM_27_135_centos ~]# dmesg |grep xen
[root@VM_27_135_centos ~]# dmesg |grep kvm
kvm-clock: Using msrs 4b564d01 and 4b564d00
kvm-clock: cpu 0, msr 0:1c257c1, boot clock
kvm-clock: cpu 0, msr 0:22167c1, primary cpu clock
kvm-stealtime: cpu 0, msr 220e880
Switching to clocksource kvm-clock
[root@VM_27_135_centos ~]#
[root@AY1405192126447871b3Z ~]# dmesg |grep xen
CPU: CPU feature rdtscp disabled on xen guest
CPU: CPU feature constant_tsc disabled on xen guest
xen-platform-pci 0000:00:03.0: PCI INT A -> GSI 28 (level, low) -> IRQ 28
[root@AY1405192126447871b3Z ~]# dmesg |grep kvm
[root@AY1405192126447871b3Z ~]#

[root@VM_27_135_centos ~]#

腾讯云主机为单网卡,主机无公网IP绑定
[root@VM_27_135_centos ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 52:54:00:D3:AD:AD
inet addr:10.142.27.135 Bcast:10.142.27.255 Mask:255.255.255.0
inet6 addr: fe80::5054:ff:fed3:adad/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:25968 errors:0 dropped:0 overruns:0 frame:0
TX packets:21664 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:190788488 (181.9 MiB) TX bytes:10550093 (10.0 MiB)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:4 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:200 (200.0 b) TX bytes:200 (200.0 b)

[root@VM_27_135_centos ~]#

阿里云主机为双网卡,分别绑定公网IP和私网IP(阿里云北京节点)
[root@AY1405192126447871b3Z ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:16:3E:00:3B:C0
inet addr:10.162.222.113 Bcast:10.162.223.255 Mask:255.255.240.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:83246285 errors:0 dropped:0 overruns:0 frame:0
TX packets:81922830 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:25346599332 (23.6 GiB) TX bytes:25324814074 (23.5 GiB)
Interrupt:165

eth1 Link encap:Ethernet HWaddr 00:16:3E:00:3B:C2
inet addr:182.92.x.xx Bcast:182.92.11.255 Mask:255.255.252.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:131305480 errors:0 dropped:0 overruns:0 frame:0
TX packets:793230 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:6117093526 (5.6 GiB) TX bytes:270508082 (257.9 MiB)
Interrupt:164

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:68664 errors:0 dropped:0 overruns:0 frame:0
TX packets:68664 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:5239997 (4.9 MiB) TX bytes:5239997 (4.9 MiB)

[root@AY1405192126447871b3Z ~]#
默认CentOS6.3 x86_64系统 默认内核版本和执行yum update后的内核版本
[root@VM_27_135_centos ~]# uname -ar
Linux VM_27_135_centos 2.6.32-279.el6.x86_64 #1 SMP Fri Jun 22 12:19:21 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
[root@VM_27_135_centos ~]#

[root@VM_27_135_centos ~]# uname -ar
Linux VM_27_135_centos 2.6.32-431.20.3.el6.centos.plus.x86_64 #1 SMP Thu Jun 19 23:04:15 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
[root@VM_27_135_centos ~]#
在本地本机ping www.qq.com的延时(深圳电信100M光纤ADSL)
harveymei@linux-7zyd:~> ping -c 6 www.qq.com
PING www.qq.com (14.17.32.211) 56(84) bytes of data.
64 bytes from 14.17.32.211: icmp_seq=1 ttl=55 time=2.16 ms
64 bytes from 14.17.32.211: icmp_seq=2 ttl=55 time=3.60 ms
64 bytes from 14.17.32.211: icmp_seq=3 ttl=55 time=3.57 ms
64 bytes from 14.17.32.211: icmp_seq=4 ttl=55 time=3.72 ms
64 bytes from 14.17.32.211: icmp_seq=5 ttl=55 time=4.98 ms
64 bytes from 14.17.32.211: icmp_seq=6 ttl=55 time=3.03 ms

— www.qq.com ping statistics —
6 packets transmitted, 6 received, 0% packet loss, time 5005ms
rtt min/avg/max/mdev = 2.160/3.515/4.988/0.846 ms
harveymei@linux-7zyd:~>

在qcloud(腾讯云华南广州节点1Mbps)主机上ping www.qq.com的延时
[root@VM_27_135_centos ~]# ping -c 6 www.qq.com
PING www.qq.com (183.60.15.153) 56(84) bytes of data.
64 bytes from 183.60.15.153: icmp_seq=1 ttl=51 time=11.2 ms
64 bytes from 183.60.15.153: icmp_seq=2 ttl=51 time=11.2 ms
64 bytes from 183.60.15.153: icmp_seq=3 ttl=51 time=11.2 ms
64 bytes from 183.60.15.153: icmp_seq=4 ttl=51 time=11.2 ms
64 bytes from 183.60.15.153: icmp_seq=5 ttl=51 time=11.2 ms
64 bytes from 183.60.15.153: icmp_seq=6 ttl=51 time=11.2 ms

— www.qq.com ping statistics —
6 packets transmitted, 6 received, 0% packet loss, time 5018ms
rtt min/avg/max/mdev = 11.202/11.242/11.272/0.109 ms
[root@VM_27_135_centos ~]#

[root@VM_27_135_centos ~]# ping -c 6 www.qq.com
PING www.qq.com (14.17.32.211) 56(84) bytes of data.
64 bytes from 14.17.32.211: icmp_seq=1 ttl=50 time=10.6 ms
64 bytes from 14.17.32.211: icmp_seq=2 ttl=50 time=10.3 ms
64 bytes from 14.17.32.211: icmp_seq=3 ttl=50 time=10.5 ms
64 bytes from 14.17.32.211: icmp_seq=4 ttl=50 time=10.5 ms
64 bytes from 14.17.32.211: icmp_seq=5 ttl=50 time=10.5 ms
64 bytes from 14.17.32.211: icmp_seq=6 ttl=50 time=10.5 ms

— www.qq.com ping statistics —
6 packets transmitted, 6 received, 0% packet loss, time 5019ms
rtt min/avg/max/mdev = 10.391/10.549/10.639/0.154 ms
[root@VM_27_135_centos ~]#

在阿里云北京节点1Mbps主机上ping www.qq.com的延时
[root@AY1405192126447871b3Z ~]# ping -c 6 www.qq.com
PING www.qq.com (61.135.157.156) 56(84) bytes of data.
64 bytes from 61.135.157.156: icmp_seq=1 ttl=52 time=5.76 ms
64 bytes from 61.135.157.156: icmp_seq=2 ttl=52 time=5.55 ms
64 bytes from 61.135.157.156: icmp_seq=3 ttl=52 time=5.72 ms
64 bytes from 61.135.157.156: icmp_seq=4 ttl=52 time=5.69 ms
64 bytes from 61.135.157.156: icmp_seq=5 ttl=52 time=5.69 ms
64 bytes from 61.135.157.156: icmp_seq=6 ttl=52 time=5.62 ms

— www.qq.com ping statistics —
6 packets transmitted, 6 received, 0% packet loss, time 5014ms
rtt min/avg/max/mdev = 5.550/5.674/5.760/0.091 ms
[root@AY1405192126447871b3Z ~]#
可以ping通内部网络非本人账户下其他主机或设备
[root@VM_27_135_centos ~]# ping -c 2 10.142.27.136
PING 10.142.27.136 (10.142.27.136) 56(84) bytes of data.
From 10.142.27.135 icmp_seq=1 Destination Host Unreachable
From 10.142.27.135 icmp_seq=2 Destination Host Unreachable

— 10.142.27.136 ping statistics —
2 packets transmitted, 0 received, +2 errors, 100% packet loss, time 3000ms
pipe 2
[root@VM_27_135_centos ~]# ping -c 2 10.142.27.135
PING 10.142.27.135 (10.142.27.135) 56(84) bytes of data.
64 bytes from 10.142.27.135: icmp_seq=1 ttl=64 time=0.024 ms
64 bytes from 10.142.27.135: icmp_seq=2 ttl=64 time=0.028 ms

— 10.142.27.135 ping statistics —
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.024/0.026/0.028/0.002 ms
[root@VM_27_135_centos ~]# ping -c 2 10.142.27.134
PING 10.142.27.134 (10.142.27.134) 56(84) bytes of data.
64 bytes from 10.142.27.134: icmp_seq=1 ttl=64 time=1.15 ms
64 bytes from 10.142.27.134: icmp_seq=2 ttl=64 time=0.501 ms

— 10.142.27.134 ping statistics —
2 packets transmitted, 2 received, 0% packet loss, time 1002ms
rtt min/avg/max/mdev = 0.501/0.827/1.154/0.327 ms
[root@VM_27_135_centos ~]# ping -c 2 10.142.27.129
PING 10.142.27.129 (10.142.27.129) 56(84) bytes of data.
64 bytes from 10.142.27.129: icmp_seq=1 ttl=64 time=2.35 ms
64 bytes from 10.142.27.129: icmp_seq=2 ttl=64 time=0.699 ms

— 10.142.27.129 ping statistics —
2 packets transmitted, 2 received, 0% packet loss, time 1002ms
rtt min/avg/max/mdev = 0.699/1.529/2.359/0.830 ms
[root@VM_27_135_centos ~]#

阿里云香港节点基础电信运营商名气通新闻稿

有關名氣通電訊有限公司 (名氣通)
名氣通電訊有限公司(名氣通)為香港中華煤氣有限公司(煤氣公司)的全資附屬機構,於 2004 年正式成立,主要業務包括網絡構建、數據中心與智能家居及雲計算服務。秉承煤氣公司的優良服務文化,名氣通作為中立電訊供應商,在香港及內地均擁有多個世界級數據中心及網路基建服務,並利用煤氣管道光纖技術於香港鋪設光纖網路,為各大企業、國際網路服務商及專業客戶提供更廣泛的服務。

5月 182014
 

[root@AY140518164554406132Z ~]# cd /etc/yum.repos.d/
[root@AY140518164554406132Z ~]# mkdir backup
[root@AY140518164554406132Z ~]# mv *.repo backup/
[root@AY140518164554406132Z ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyuncs.com/repo/Centos-6.repo
[root@AY140518164554406132Z ~]# sed -i ‘s/aliyun.com/aliyuncs.com/’ /etc/yum.repos.d/CentOS-Base.repo
[root@AY140518164554406132Z ~]# yum clean all
[root@AY140518164554406132Z ~]# yum makecache