p**o
发帖数: 3409 | 1 迅雷离线下载是http/https下载，跟普通浏览器一样用标准的80或443端口，
不容易像bt/emule等p2p软件一样被ISP甄别出来。你抓个包自己看看就知道了。
据我所知目前没有ISP会在实际运营中对http协议做深度包检测，技术上有难度。
所以迅雷离线其实是在北美下载非法资源最安全的途径之一。
115网盘和百度网盘也是http下载，也很安全。
——千万不要用bt/emule，太容易查了，一抓一个准。 |
|
c**x
发帖数: 432 | 2 【本 报 讯】 据 台 湾" 经 济 部" 技 术 处 委 托 资
策 会 推 广 服 务 处 进 行 的 一 项 调 查， 截 至1998
年11 月 底 止， 台 湾 地 区 因 特 网 使 用 人 口 已 突
破270 万 人， 比10 月 底 增 长 逾16 万 人(6.37%)； 新 增
上 网 人 口 主 要 来 自 大 型ISP 用 户、 教 育 及 学 术
用 户。
---- 根 据 该 项 调 查， 并 集 成 岛 内Internet 服 务
商(ISP) 的 数 据 统 计 资 料， 教 育 和 学 术 用 户 数
由77 万 多 增 加 为85 万 多； 工 商 和 个 人 用 户 数185
万 多， 包 |
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h**d
发帖数: 5208 | 3 是域名。
isp会经常renew ip吗？
怎么能看出来我isp给我的是固定ip还是dynamic ip? |
|
s*****o
发帖数: 22187 | 4 好像说各大NB网络供应商（ISP）要在7/12之后监控用户下载内容，如有版权问题将会采
取法律手段解决？
google "July 12 ISP" |
|
s*****o
发帖数: 22187 | 5 Customers found to be illegally downloading copyrighted material will first
receive one or two notifications from their ISPs, essentially stating that t
hey have been caught. If the illegal downloads continue, subscribers will re
ceive a new notice requesting acknowledgement that the notice has been recei
ved. Subsequent offenses can then result in bandwidth throttling and even se
rvice suspension.
Read more: http://www.foxnews.com/tech/2012/03/17/us-isps-become-copyright-c
ops-starting-july-12/... 阅读全帖 |
|
W**********r
发帖数: 8927 | 6 You don't need a router to access internet. Just plug your computer with
data cable from your ISP provider ... go to http://www.dd-wrt.com and follow the instruction there. Typically you install the mini-generic version first, then upgrade to the standard version. After that, you can follow your ISP's instruction to hook up with the router.
router |
|
L*****k
发帖数: 13042 | 7 我的看法，不知道对不对。
1 网络的底层传输很多是不对称的。
2 ISP不愿意让你提供文件共享
3 一般应用都是下载的数据量大，ISP把有限的带宽分配更多给下载。 |
|
|
z****n
发帖数: 1933 | 9 学习一下这篇文章
报告称YouTube带宽成本几乎为零
来源:问道推广员 时间:2009-10-17 15:46 字体:[大 中 小] 收藏 我要投稿
新浪科技讯 北京时间10月17日上午消息，据国外媒体今日报道，网络管理公司
Arbor Networks的最新报告显示，YouTube的带宽成本几乎为零。
带宽成本为零
关于YouTube的带宽成本曾经有过许多讨论，瑞士信贷今年夏天也曾发表过一篇报
告，认为YouTube的带宽成本约为3.6亿美元，今年有可能亏损5亿美元。但是Arbor
Networks却认为，YouTube的带宽成本甚至比一个普通个人用户还低。虽然在YouTube的
帮助下，谷歌目前在整个互联网流量中的占比已经至少达到6%，而且会使用大量的光缆
，但是谷歌却可以与大型ISP(互联网服务提供商)进行流量交换，而无须支付带宽费用。
Arbor Networks为全球70%的ISP提供网络监控设备，因此该公司有可能是除美国国
家安全局以外，对互联网流量最为了解的一家机构。该公司首席科学家克雷格·拉伯维
茨(Craig Labovitz)说：“我认为谷歌的传输成本几乎为零。” |
|
c*c
发帖数: 2983 | 10 chrome地址栏输入不就是search么，这种url跳转都是isp干的，你改了电脑的dns没用
，网络接入还是再isp控制下 |
|
p*****i
发帖数: 1281 | 11 有些isp禁止smtp发邮件。你试试用用mail加载gmail账号，或者换换邮箱。
我刚到美国用mail的时候也遇到过这个问题，然后换了邮件客户端也不行，然后问邮件
服务器客服，给出的结论就是isp.的问题 |
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s****e
发帖数: 3181 | 12 不管是手机还是DC，处理cmos sensor的信号（RAW），还原成RGB，再压缩成JPEG或者
MPEG都是用的ASIC电路（在SOC里一般叫ISP模块），这个image processing pipeline
目前我还没听说过用cpu或者gpu实现的
手机app或者一些DC的app里面加后期效果的功能，可能是cpu实现的，或者有gpu加速，但
是都是offline或者缩图了的real time，因为CPU和GPU的throughput不够，而且这些也不
是经典image processing pipeline的组成部分。总之，ISP的使用目前是不可避免的 |
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g******d
发帖数: 157 | 13 It could take up to 7 days to refresh all DNS caches.
If you cannn't resolve the domain name, it only means your ISP's DNS hasn't
been refreshed. It is possible that people who use a different ISP have
already been able to see your website.
Most of mine domains are refreshed overnight, but one of them takes 3 days... |
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g***u
发帖数: 5413 | 14 IP不工作，我意思是就是其中一个ISP当了，那对应的IP就访问不了了。我思路有啥不
对，又不是带宽不够。其中一个ISP是comcast business cable,当的次多了（虽然也是
小于1％），所以现在就又搞了个T1。现在出去的流量可以共享两个带宽，关键是不想
中断客户的访问。 |
|
b******y
发帖数: 9224 | 15
没错，原先在家host的时候，时间长了，isp分配的ip地址就变了。亦或很多isp禁止使
用port 80. 你还要去搞个proxy server, 把port 80的流量转到port 8080比如说，累
不累呀。 |
|
z*****n
发帖数: 7639 | 16 学完了phd去配置网络？哪家ISP也不要这种人。
我们这儿的local ISP，全公司就一个PHD，还
是上班后part time拿的。 |
|
l***y
发帖数: 791 | 17 pardon me, but it sucks.
i.e. qos is not to be configured within the app, firewall rules
are configurable but limited(not flexible enough). and it's a
frankenstein stapled together by ldap, radius, and some other apps.
recent upgrade has better web front end, but that's it.
however, it's made for ISPs, whose network doesn't have the
complexity we have. i know they have some big ISP customers.
(hope i'll not be sued by juniper. :P ) |
|
l***y
发帖数: 791 | 18 imho blocking skype is easy for enterprise, but not easy for ISP. skype uses
udp
extensively, with a stun-like protocol. so ISPs will have a problem. for
enterprise, out going traffic will be blocked anyway, and http/web access are
proxied. so as long as your web proxy (such as bluecoat) blocks non-http
traffic going over 80/443 port, skype will not work. (contrary to lots of
popular magazine says) |
|
j****r
发帖数: 30 | 19 All Cisco experts,
We are running bgp on many routers for Internet load balance. We have two T1
circuits from one ISP, let's focus on these two T1 circuits.
On our side, the two Ts terminate on the same router, on ISP side, they
terminate on different routers. Most of time, one circuit got 100% saturated,
the other one has only 20% usage.
Is there any way easy to adjust the load between the circuits? we only care
about the inbound traffic. |
|
z**r
发帖数: 17771 | 20 ☆─────────────────────────────────────☆
jaguar (haha) 于 (Thu Mar 9 09:28:52 2006) 提到:
All Cisco experts,
We are running bgp on many routers for Internet load balance. We have two T1
circuits from one ISP, let's focus on these two T1 circuits.
On our side, the two Ts terminate on the same router, on ISP side, they
terminate on different routers. Most of time, one circuit got 100% saturated,
the other one has only 20% usage.
Is there any way easy to adjust the load between the circuits? we o |
|
c*****g
发帖数: 1137 | 21 你没看他说不只是wireless,用网线接上也不行?
显然问题不是pc到router，而是router到cabel modem到ISP之间
多半是isp不认router的mac
他不是搬家了么?
你试试看在不同的家里面,同一个router,
同一个频率能找到wirless的最远距离一样不.
faint, this definitely won't work
try reboot router and your PC |
|
g**d
发帖数: 77 | 22 【 以下文字转载自 SanFrancisco 讨论区 】
发信人: good (哈哈), 信区: SanFrancisco
标 题: Venice - 2GB per day
发信站: BBS 未名空间站 (Tue Jan 9 02:03:36 2007)
I am one of Venice' beta testers. Works like a charm, admittedly with a 20/1
Mbs ADSL2+ connection and a unlimited use ISP.
Even at sub-DVD quality the data use is staggering...
Venice Project would break many users' ISP conditions
http://www.out-law.com/page-7604
OUT-LAW News, 03/01/2007
Internet television system The Venice Project could break users'
monthly intern |
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s*****g
发帖数: 1055 | 23 No need to be per-packet load balancing and it is undesirable. Depends how
the router does the hash, per flow load-balancing would achieve higher
throughput if multitasking -- which is very common.
OP just needs a small router which has three interfaces, one to PC, the
other two will get (DHCP) IP addresses from two ISPs, then configure two
static routes on the router with nexthop pointing to ISP's gateway.
load |
|
s*****g
发帖数: 1055 | 24 Why not? subscriber only sees an IP gateway, you don't know how ISP makes
this gateway redundant.
Anyway, I don't think this is the way how ISP allocate IP addresses to clients, since all traffic will be carried over PPPoEoA, what network mask OP gets does not really matter, traffic between those end hosts will be bridged to DSLAM and then routed back, he/she is essentially have a bunch of /32 addresses and he will not get an effective Ethenet LAN like connectivity between those hosts.
Make sens |
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m********r
发帖数: 543 | 25 当然有区别. 严重怀疑你不接触ISP的productive network. ISP的network 都要 run很
多不同的service. JCS12000的每一独立RE可以做到在同一个router chassis上run不同
的service, run不同的image, 就算一个RE down了也不影响其他的RE上的service. 而
且整个jcs chassis每个module都有redundancy.
还省chassis space. 以前要4台router chassis才能完成的service, 用JCS virtually
divide一下, 三台router chassis就能完成了.
CRS-1为了装DRP, 每少一个LC就少了很多forwarding capacity?! 对核心路由器来说是
最严重的缺陷了. 说到单点故障, CRS-1才是最大的单点故障, 整个CRS-1 down了你啥
DRP都不用跑了.
你把cisco sales教的propaganda背得也太熟了, 也不自己想想. |
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m********r
发帖数: 543 | 26 已经有人说了，c夹在j和华为之间，不上不下，以后的日子会更难过。
市场老大和技术好或者价格便宜都没有关系，关键是谁最老，最先占领market，timing
很重要。ISP network的一个特点是，一旦他们一开始用了什么product，就不会再swap
出去，直到下次新的网络的开建，产品需要更新换代，老的router就被push到网络的外
edge。有一个美国最大的ISP之一，在新建一个core network，一台cisco的都没再买。
这也是为啥cisco上两个季度报告都很不好的原因，而且chambers在ER conference
meeting上首次提到竞争对手的名字
cisco去年的core router market share下降了7%. |
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p*****g
发帖数: 72 | 27 在美国用迅雷下载中国服务器上的DISTRICT 9，被一家电影版权公司扫描到（大概是看
到文件名里有DISTRICT 9），发了邮件给ISP，ISP再FORWARD给我。估计只是警告，没
什么大事。
大家P2P时，有什么办法绕过网络监控吗？加密？代理？ |
|
n********x
发帖数: 5 | 28 你们如果是和isp做BGP的话可以问问isp有没有blackhole-community
然后用ipflow做个自动检测,发现DDOS就直接把那个ip blackhole掉 |
|
c*****i
发帖数: 631 | 29 话说现在没有上mpls的大isp出了sprint还有谁。大isp里面好像也是sprint开始用isis
的？好像中国也是受sprint的影响，在升级网的时候换的isis。
ups
了。 |
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t*********e
发帖数: 1136 | 30 好像p2p的流量在ISP那里是被要封的。Comcast就这样干的。
Netflix和油管都得给ISP钱买路宽。 |
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T**r
发帖数: 7016 | 31 老大，不好意思，这个贴比较长。
我把NAT搞定了，现在MSVPC guest也能上internet，即使host在公司的VPN上。但是
host
不能看到guest，guest却可以看到host（公司IP）。我需要host能看到guest，因为
guest上
有一些web application需要demo。
whatismyip.com显示两个是同一个IP，而且应该是我VPN的IP，我ISP的IP是75开头，公
司是
144开头。
下面是host 和guest的ipconfig 和route print，其中host里有一些vitualbox和
vmware的遗留下来的一些设置，以前装过，没有搞出来，现在用的是MS VPC。
******************
host ipconfig: *
******************
C:\Documents and Settings\ga2334>ipconfig
Windows IP Configuration
Ethernet adapter VMware Network Adapter VMnet8:
Co... 阅读全帖 |
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b******s
发帖数: 5329 | 32 not good point, even through CE is ISP managed, ISP still wants its core
separating with customer service access. And most of time, core team and
customer service team are two teams even under different VPs. |
|
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p*****s
发帖数: 344 | 34 I am no expert on this, just try to understand your problem.
you want internet user to reach nearest content server.
you want your content servers can backup each other.
you are running out of /24 addresses. and ISP doesn't support smaller suffix.
you are using anycast to achieve load balance. apparently using ISP anycast
support saves you the load director and health monitor.
so you have to implement your own load director and health monitor. And to
save the cost(or for your own interest) you w... 阅读全帖 |
|
he
发帖数: 2025 | 35 公司在东岸，基本工资能给到十三万，外加奖金。
猎头递上简历，和对方经理先聊过，然后确定时间专业技术电面。
对方估计比较忙，没看我简历,上来就问: ASA熟不熟。
我心说哪跟哪啊: 基本不碰。
对方: OSPF?
我: 我简历上既没写ASA，也没提OSPF。
对方: 那你是干啥的。
我: 电话。
对方: 经常接触网关吗?
我: 20%左右
对方: #show controller t1结果总是有slipped secs,ISP已经换过设备了，照旧，下
一步查哪里?
我: 时钟校准。
对方: 对，我们当时应该先查网关时钟设置的，折腾一圈是PRI时钟问题。SIP?
我: CUCM ===(call-ID1)=== CUBE ---(call-ID2)---ISP。call-ID从#debug ccsip和
debug ccapi结果里找。
对方: 得，不用再问SIP了。介绍介绍电话中心的经验?(语气大为缓和)
我: 接线员报错但很多情况下电话中心系统没事，底下其他系统的问题，比如，UCCX-
CUCM-LDAP-AD。客户瞎捣腾AD导致接线员没法登录。
对方: 擦，上个月正好碰见这事，来来回... 阅读全帖 |
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w*****9
发帖数: 473 | 36 是一个contract job。
合同是3年。
派到ATT做网工。
优点：离家近。大ISP。pay加了不少。
缺点：是contract的，只给H1b transfer，没有绿卡。
1.大家觉得最近市场好了么？像ATT，verizon这类的ISP现在policy都是不sponsor的，
vendor方面貌似招人也不给力。
2.3年的合同可以break掉么？比如干了2年，有更好的机会走了。
多谢。 |
|
s*****g
发帖数: 1055 | 37 No, it won't work, regexp ^31969$ won't match as-path with multiple 31969 in
it, you probably need a combination of filter-list and prefix-list in this
case, something like ^31969_[31969]*$ and only allow legitimate prefixes to
come in from this AS.
So a side question, does anybody here have tier-1 ISP operation experience?
how does a typical tier-1 ISP configure their BGP filters to block illegal
advertisement from a peer or a customer? do they participate RPKI? if so,
dothey use some kind of ... 阅读全帖 |
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j*a
发帖数: 14423 | 38 isp uses acl/prefix-list to perform filtering facing customers.
when you say tier-1, do u mean between isps? i guess they dont use
filtering.
in
this
?
|
|
x*********n
发帖数: 28013 | 39 你发的那个我在Oct 25就受到CA的recruiter的信了。
email是@juniper的一个老印。
same position，面向ISP客户的tech support，prefer ISP经验。 |
|
a***n
发帖数: 262 | 40 So each site is multi-homed to the same or different ISPs?
In either case you won't have control
over the ISP's internal routing since you mentioned over public internet
and you might have control over the exit/entry point from/to you?
Cisco PfR if Cisco?
http://www.cisco.com/en/US/products/ps8787/products_ios_protoco
or put certain prefixes in different VRF on each site to measure the
performance of different path or PBR, then adjust your internal routing in
Linux?
doing
has
I |
|
a***n
发帖数: 262 | 41 So each site is multi-homed to the same or different ISPs?
In either case you won't have control
over the ISP's internal routing since you mentioned over public internet
and you might have control over the exit/entry point from/to you?
Cisco PfR if Cisco?
http://www.cisco.com/en/US/products/ps8787/products_ios_protoco
or put certain prefixes in different VRF on each site to measure the
performance of different path or PBR, then adjust your internal routing in
Linux?
doing
has
I |
|
x*********n
发帖数: 28013 | 42 Usually most of enterprise will peer 2 different ISP to advertise their
routes.
1 as primary, the other one used as backup.
in most cases, my customers,ISP only advertised the default routes to
enterprise, because enterprise doesn't have to know too much.
outbound only affect on the edge router, so other iBGP doesn't care. |
|
n**********l
发帖数: 271 | 43 Thanks. When is burstable billing usually used? Between network operators?
What I usually see appears to be just a fixed price for a CIR with not
burstable billing (unless I read it in the wrong way).
for bandwidth like this (HE)
Full 10 Gigabit Ethernet connection in any US, Canadian or European
Hurricane Electric POP for $0.75/Mbps with a one-year contract. ($7,500/
month, $2,500 setup fee, customer is responsible for all cross connect fees).
This one does not use burstable billing?
Does burst... 阅读全帖 |
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n**********l
发帖数: 271 | 44 CPE ---primary circuit------- ISP Router
---backup circuit -------
Only 1 ISP router, 1 CPE router involved. Backup circuit should be left
unused when the primary circuit is up. Graceful transition required.
Basically http://www.cisco.com/image/gif/paws/13762/40a.gif except one circuit should be utilized at any time. |
|
s*****g
发帖数: 1055 | 45 A basic BGP feature "bgp allow-as in" will allow prefixes with its own AS in
AS-PATH into local BGP/routing table, by-pass BGP's loop-avoidance
algorithm, so to speak. Is this what you are asking? or if you are not multi
-homing, you just import default route from your local ISP.
Unless you are tier-1 ISP, you most probably don't need your own transport.
For Netflix's CDN, read their "open-connect" white paper, nothing fancy at
all.
datacenters
realized |
|
s******v
发帖数: 4495 | 46 总结
1. Netflix Open Connect是NFLX自己基于开源和off-shelf硬件而开发的一个CDN系统
2. 有两种CDN实现模式，
1) ISP从NFLX拿到OCA，建立BGP链接，作为Local Stream Server，具体的看下面
control flow;
2) NFLX在大的Internet Exchange里面建立Local CDN cluster, 和ISP直接链接
NFLX占了非常高的Internet traffic比例, 2H 2013 vs 2H 2012
1) NFLX 32% ~ 33%
2) Youtube 18% ~ 14%
Netflix decrease illegal file sharing.
项目的背景：
1）项目从2011年开始，目前已经offload了100%的Traffic，达到了16TB；而其他的CDN
例如，Akamai，Limenetwork，Level 3只能达到20-25%；
2）4个Racks的数据量可以达到8.6PB
3）multiple-tier arch:
3.1) Headend, 1(6?) OCA... 阅读全帖 |
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s******v
发帖数: 4495 | 47 here is the link. it was lost when i did copy & paste.
http://www.nanog.org/sites/default/files/tue.lightning1.general
"The routes received via this session are summarized and inserted into the
Netflix content routing system"
So the OCA acts not only the stream server but also an agent to collect
local routing data and reflect back to its server. It is a quite neat
solution to me.
how to prevent the off-net traffic? i think should be easy, because ISP can
require OCA to streaming traffic to a de... 阅读全帖 |
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p*****s
发帖数: 344 | 48 不知道netflix和ISP怎么分担花费。如果ISP完全自己掏钱，那和完全in-transit比到
底能省多少。netflix这样做只有它自己的内容可以用，解决方法不够通用。 |
|
s******v
发帖数: 4495 | 49 ISP可以不理, 不过这样netflix video traffic要经过uplink, 损失是isp的
死。 |
|
