@hlz0812
请问下，中日与日美之间的海缆或线路目前拥堵吗？
请问下，中日与日美之间的海缆或线路目前拥堵吗？
This topic created in 2657 days ago, the information mentioned may be changed or developed.
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hlz0812Jul 29, 2019 via Android
1
海缆不堵，线路看对接运营商
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CernetBoomJul 30, 2019 via Android
2
海缆没有什么堵不堵的，你买多少波就是多少波，堵的只是你的骨干网，TPE 什么的照样还一堆没点亮
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tiaJul 31, 2019
5
联通到 ijj 现在很稳 波动不会超过 10ms
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hlz0812Jul 31, 2019 via iPhone
12
@bclerdx iij 卖给不同 idc 的貌似优先级也不一样，同样走 iij 的也有的快有的慢，联通到韩国的线路比较好，韩国三家的线路联通高峰期也不慢
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@hlz0812 完了，刚测了一些，中国电信走广州、北京出口的到日本东京炸了，走上海电信到 NTT 的到是很正常。。联通线路走 HK NTT 一切正常。
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hlz0812Aug 1, 2019 via iPhone
15
@bclerdx 你得换 cn2 才能走那个点，上海 ntt 连 20Mbps 都跑不到，IIJ 这种爆炸线路刚测了下到电信都能 270 多 Mbps
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CernetBoomAug 1, 2019 via Android
18
@bclerdx 4134 没有 2914 在香港的互联，和 9293 完全是两个东西，首先你得是 NTT 的客户，其次要是这样有用那 NTT N 年前就扩容了
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hlz0812Aug 1, 2019
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@bclerdx 走 ntt 的线路挂代理，然后在国内电脑上跑 speedtest，7-10Mbps 左右。这个已经是极限带宽了，看视频的话几乎就 50KB/s，本地 1000M 宽带
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@CernetBoom 为什么是 NTT 不扩容，而不是 AS4134 不扩容呢？
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hlz0812Aug 1, 2019
22
Testing from Amazon.com (13.112.)...
Retrieving speedtest.net server list... Retrieving information for the selected server... Hosted by China Telecom JiangSu Branch (Suzhou) [2055.63 km]: 53.318 ms Testing download speed................................................................................ Download: 103.69 Mbit/s Testing upload speed................................................................................................ Upload: 108.25 Mbit/s Testing from ... Retrieving speedtest.net server list... Retrieving information for the selected server... Hosted by China Telecom JiangSu Branch (Suzhou) [2049.91 km]: 414.432 ms Testing download speed................................................................................ Download: 118.56 Mbit/s Testing upload speed................................................................................................ Upload: 36.63 Mbit/s 第一个 aws 连国内测速，第二个 IIJ 连国内测速，这东西也不太准，大概看看就行 |
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CernetBoomAug 1, 2019 via Android
25
@bclerdx 买带宽是对等的
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hlz0812Aug 2, 2019 via Android
29
@txydhr 电信亚太地区不管你 t 几都是收费，欧美才有免费的，pccw 也是 t1，亚洲带宽还不是要买电信的，所以 pccw，telstra 什么的都把直连带宽拿来卖，不然给你绕美国的 free peer 去
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hlz0812Aug 2, 2019
31
@bclerdx 关键是免费的口子就那么大，而且免费接口上的用户量还远远大于收费端口的用户量，根本不可能快的起来。像那种买了电信 20G 以上带宽的 IDC 或者运营商，往电信高峰期都可以跑 300Mbps 以上。Tier1 运营商高峰期到电信基本都是堵死的，除了 pccw 这种买的带宽比较多，而且还不低价卖给 IDC 的，像 cogent、telia、level3 这种的哪个不堵？这些 Tier1 运营商下游客户太多了，他们到中国的带宽根本支撑不住那么多流量。说真的只要不是烂大街的线路，到中国就算只有 10G 体验都不差。
电信到 IIJ 10G，联通到 IIJ 10G 电信到 softbank 40G，联通估计 30G 的样子，KDDI 应该也差不多 |
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CernetBoomAug 2, 2019 via Android
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hlz0812Aug 2, 2019 via iPhone
33
@CernetBoom telia 带宽虽然不少，有时候回程走 telia 的机房多了还是堵，基本上就是那几家大的 idc 把路由调哪家回程哪家就炸。IIJ 白天还好，ntt 是 24 小时堵，我都怀疑是不是故意搞成这样了，半夜 3 点起来看也是那个水平
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CernetBoomAug 2, 2019 via Android
34
@hlz0812 NTT 早上 3-7 点还正常
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hlz0812Aug 2, 2019 via Android
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@CernetBoom 好几年前上海到 129.250.66.61 低峰期只有 30ms 出头，现在貌似 80 起步
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CernetBoomAug 2, 2019 via Android
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@hlz0812 现在也有 31 的时候
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@hlz0812 说反了吧？是 IIJ 到中国电信 10GB、IIJ 到中国联通 10GB、Softbank 到中国电信 40GB、Softbank 到到中国联通估计 30GB 的样子，KDDI 到中国联通也差不多。
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txydhrAug 2, 2019
39
@CernetBoom
A Tier 1 network is an Internet Protocol (IP) network that can reach every other network on the Internet solely via settlement-free interconnection (also known as settlement-free peering). Tier 1 networks can exchange traffic with other Tier 1 networks without having to pay any fees for the exchange of traffic in either direction, while some Tier 2 networks and all Tier 3 networks must pay to transmit traffic on other networks. 不是不应该付钱么 |
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CernetBoomAug 3, 2019 via Android
40
@txydhr 费用指的是 Transit Fee 是可以理解的，Tier 1 的定义是 Transit-free(无 Transit/上游)而已，不可能不存在任何费用，XC 之类的也是要钱的，如果真的照你这个定义就没 Tier 1 ISP 了，Tier 1 和 Tier 2 ISP 直接也是可以直接 Peer 的，不需要买 Transit
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txydhrAug 3, 2019
41
@CernetBoom The pure definition of peering is settlement-free, also known as "bill-and-keep," or "sender keeps all," meaning that neither party pays the other in association with the exchange of traffic; instead, each derives and retains revenue from its own customers.
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CernetBoomAug 3, 2019 via Android
42
@txydhr 那你解释一下 Paid Peering ？
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CernetBoomAug 3, 2019 via Android
43
@txydhr
Following an earlier post Peering into Peering , the definition of peering is settlement-free, "bill-and-keep," or "sender keeps all," meaning that neither party pays the other for the exchange of traffic. Based on the definition, peering appears to be free of cost. However, that doesn ’ t mean peering is completely free. There are costs involved such as co-location, power, equipment (routers and switches), capacity, cross-connects, local loop, effort to manage the peering and so on. |
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CernetBoomAug 3, 2019 via Android
44
@txydhr N Flix 在美国就是找 Comcast 和 Verizon 买的 Paid Peering(不是 Transit)了解一下
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CernetBoomAug 3, 2019 via Android
45
@txydhr
A Paid Peering relationship is a peering relationship but with an exchange of compensation from one party to the other. The compensation could take the form of $/Mbps as is the case with the more public offerings. In other cases it could be an asymmetric allocation of costs or the contribution of services of value. Peering 和 Transit 又不是靠付不付钱区分的好吗 |
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