Comcast Carrier
Sep 24, 2009
We're having a meeting today with Comcast about letting them move fiber into our facility. Please do not post experiences with Comcast CABLE. I want to know your experience as other datacenters and hosts with Comcast Fiber. What do you know about their fiber and what is your experience with them in both standalone and BGP?
Reliability, latency, peering quality, etc. We are in the Houston area, where so far I have heard they are pretty good with most I have talked to, and a few negatives. At what level would you use their connection?
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Oct 1, 2009
As we have been extending our private peering relationships across the US and Europe we are also looking to consolidate our carriers to simply Tier 1 and/or near Tier 1 providers. One of these providers will certainly be Level(3), but we are still not fully decided on other carriers.
Now, what I am looking for here is, which network combination would most impress you as a customer/potential customer. I am not looking for price based analysis or analysis of dealing with a company's billing or support departments. I already have the data I need for those determinations. The point of this poll is solely to get end-user input as to overall network performance/reliability and how the network would compliment the existing carrier, Level(3). Please elaborate as to your decision in a post to the thread.
Note: We have already done significant research, this poll is simply to help confirm research we have already done or to bring about items/issues we may have overlooked or not considered. Figured we'd take advantage of the knowledge of this community before making a final decision.
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Sep 14, 2009
We are switching from a reseller that blends several carriers to Level3, to reduce our b/w costs (by a factor of 3x). We are driving upwards of 300Mbps currently.
Is Level3 reliable enough in terms of uptime to be our *only* carrier?
We are running a real-time always-on service with long-lived TCP connections, so frequent disconnections would be problematic. A single downtime of a couple of minutes per month would not be too bad on the other hand.
Switching our stuff to Level3 is a lot of work as it is.
Getting a second provider for the failover, which involves setting up a CISCO edge router with BGP, getting an AS number from ARIN, will make this task too big at this point. Is L3 reliable enough on its own to spare this hassle of a second ISP?
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Dec 27, 2007
This is a carrier. They connect or own sub-ocean lines and connects various continents - the areas of interest to me. Their locations where there network footprints are have my clients. My clients are in NYC/India primarily. Where should I colo the servers based on the map below.
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Oct 14, 2007
Who are the reputable players in chicago ?, must be carrier neutral
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Oct 9, 2007
The company I'm currently working for is looking at colo space on the East Coast. I already have a quote from Equinix for their Ashburn DC4 - but I'm trying to do some due diligence and shop around a bit.
We're looking at 5 cabinet cages, and we have moderately high power requirements. The Equinix DC4 gives us 32kVA total availability across the 5 cabs.
Can anyone recommend other comparable facilities on the East Coast, or recommend Equinix resellers?
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Oct 9, 2007
We are in need of a colo in the Dallas area. Need a 42u rack, 3-5Mbps connection, 20A of A/B power, carrier neutral!, access by customer and escorted vendors, and most important - Type 2 SAS 70 certification!
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Oct 8, 2007
telling me about your offerings, or trying to convince me about out of area datacenters because of the risk of terrorism, cost, or alien invasion, I'm not seriously shopping around, just doing a bit of initial research.
With that disclaimer, what's a rough expectation of pricing for a NYC, carrier neutral datacenter for 1 cabinet with 60 amps of 110v? Preferrably somewhere that Internap is available.
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May 7, 2008
I have Comcast Business PRO Internet service for work purposes. I've got two web/dns servers and two mail servers, each having their own IP. These are all fine.
There had been a couple situations in the past where I would receive a "Relaying Denied" message from my PINE when sending mail out. At examination of the maillog, It's essentially telling me that these messages are being generated because of the lack of reverse DNS.
xxx.xxx.xxx.xxx-Oregon.hfc.comcastbusiness.net., instead of my.domain.com.
I did a couple searches on Google, and read somewhere that Comcast is unwilling to create rDNS entries, but they've not specified, so far, whether they subscribe to PRO or residential service.
Before I spend 90 minutes on the phone with Comcast, I thought I'd see if anybody here has been successful with rDNS and Comcast PRO before. It seems to me that by denying this, it defeats the purpose of the "dedicated" service that I signed up with ...
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Jul 14, 2009
Are there any co-location companies in California (preferably northern) that have a peering agreement directly with Comcast?
Not sure if it's peering or transit I should be asking about. Basically I'm trying to get the best path I can afford to Comcast customers in California.
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Jul 1, 2008
it looks like FDC is taking more pain than usual in terms of network upgrade, i see the network seems unstable till 5am and even now the sessions are getting lost, once in a while like once a hr, anyway this is not the reason i am writing this, but when did comcast become transit provider, i did a trace to UK for example and i see trace going through comcast and then hopping onto tiscali/level3, it looks to me like, comcast could be trying to even out (1:1) it;s carriers so that they get all inbound for free sort of and it;s upstream selling as a transit make money there. sort of, just a surprise to me at this point
2 <1 ms <1 ms <1 ms 66.90.127.141 [66.90.127.141]
3 1 ms 1 ms 1 ms be-10-604-cr01.chicago.il.ibone.comcast.net [68.
6.89.49]
4 37 ms 40 ms 36 ms pos-1-14-0-0-cr01.newyork.ny.ibone.comcast.net [
8.86.85.105]
5 42 ms 42 ms 42 ms pos-1-15-0-0-cr01.mclean.va.ibone.comcast.net [6
.86.85.89]
6 30 ms 30 ms 31 ms xe-3-1-0.was11.ip.tiscali.net [213.200.84.117]
7 122 ms 115 ms 113 ms xe-2-1-0.par70.ip.tiscali.net [89.149.186.165]
8 119 ms 119 ms 119 ms kpn-eurorings-gw.ip.tiscali.net [213.200.85.238]
9 120 ms 120 ms 123 ms asd2-rou-1021.NL.eurorings.net [134.222.231.177]
10 119 ms 119 ms 167 ms obl-rou-1021.NL.eurorings.net [134.222.231.130]
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Apr 28, 2008
I have a business class comcast account and have been able to host multiple sites on my server but ive recently read strange things about comcast's regulations towards this.
there really arent any alternatives in my area for a connection and i have multiple accounts right now. has anyone had any bad experiences in this situation?
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Jan 24, 2008
San Francisco to Ashburn
3 * 137 ms 111 ms ge-2-20-ur01.santaclara.ca.sfba.comcast.net [68.
86.143.145]
4 * 39 ms 89 ms pos-0-7-0-0-ar01.sfsutro.ca.sfba.comcast.net [68
.86.90.154]
5 * 289 ms 17 ms pos-0-9-0-0-cr01.sanjose.ca.ibone.comcast.net [6
8.86.85.130]
6 645 ms 95 ms 76 ms pos-0-9-0-0-cr01.denver.co.ibone.comcast.net [68
.86.85.118]
7 843 ms 111 ms 262 ms pos-0-10-0-0-cr01.chicago.il.ibone.comcast.net [
68.86.85.54]
8 124 ms 100 ms 114 ms pos-0-3-0-0-cr01.cleveland.oh.ibone.comcast.net
9 167 ms 125 ms 225 ms
pos-0-6-0-0-cr01.pittsburgh.pa.ibone.comcast.net
[68.86.85.42]
10 156 ms 108 ms 164 ms te-0-4-0-7-cr01.mclean.va.ibone.comcast.net [68.
86.84.93]
11 113 ms 192 ms 107 ms te-1-1-pr01.ashburn.va.ibone.comcast.net [68.86.
84.94]
12 188 ms 233 ms 112 ms xe-3-1-0.was11.ip.tiscali.net [213.200.84.117]
San Francisco to Santa Clara
6 87 ms 60 ms 75 ms sar1.sffca.ip.att.net [12.123.12.121]
7 57 ms 61 ms 52 ms te-0-3-0-0-ar01.sfsutro.ca.sfba.comcast.net [68.
87.226.185]
8 67 ms 79 ms * ge-2-20-ur01.santaclara.ca.sfba.comcast.net [68.
86.143.145]
9 176 ms 142 ms 129 ms ge-2-20-ur01.santaclara.ca.sfba.comcast.net [68.
86.143.145]
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Mar 29, 2007
For some reason... No one with a Comcast.net email address can email us..
Always the Rejected Email comes back with This message:
==============================================================
A message (from <yyyyyyy@comcast.net>) was received at 29 Mar 2007 3:15:15 +0000.
The following addresses had delivery problems:
<yyyyy@sellwebhost.com>
Permanent Failure: 550-Callback_setup_failed_while_verifying_<yyyyyyy@comcast.net>
Delivery last attempted at Thu, 29 Mar 2007 03:15:18 -0000
=============================================================
I have used "yyyyyyy" only to alter the email address for privacy..
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Jul 14, 2009
Both have a nationwide backbone, ibone for Comcast and tbone for Road Runner. Which one is bigger and does anyone have a network map?
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May 24, 2008
I find it very interesting that the major ISPs in and around Portland Oregon apparently do not peer with anyone in the region. For low latency you're better off choosing a provider in Seattle or San Jose as traffic always seems to be routed there and back anyways.
Why is this? Is it simply not worth their effort to setup the peering connections because most traffic will be hosted outside the region anyways?
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Jun 20, 2008
Is anyone else having a large number of Comcast email addresses being bounced back?
We found that it started two weeks ago and is spreading to other Comcast addresses that were previously working.
If you have received info on this or if it is happening to your network as well,
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Apr 15, 2009
I've recently gotten a new dedicated server and am in a bit of a bind because all emails to Comcast are blocked. I have verified that the IP is not on any RBL I can find but it does appear on the Trend Micro DUL list. This is a list that appears to not be maintained but which the wingnuts at Comcast are using. Emails to the maintainer of the list or to Comcast are auto-responded to and promptly ignored.
I'm at wits end (admittedly, not a long journey) with this. As a small provider I guess I just don't count but it is annoying as hell that there is no way to get these folks to listen. Every legitimate RBL on the planet has someone to help with issues but Trend Micro appears to not. And Comcast doesn't care about their customers getting legitimate email. Actually, I guess they just don't care period.
Has anyone else experienced this and, if so, were you able to figure out what magical incantation it takes to get through to a human who cares?
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Dec 3, 2008
I just read this on their forums.Softlayer is pleased to announce that we have turned up a private 10G peer with Comcast in Dallas. This will bring our total capacity in Dallas to 70Gs.
Dallas, TX (dal01) - 70Gs
Verio - 20G (2x 10G)
Level3 - 10G
Savvis - 10G
Global Crossing - 10G
Internap - 10G
Comcast - 10G private peering Which other providers have this?
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Nov 7, 2008
It appears Comcast is now blocking port 25. As a result, I can't sent outbound email via my dedicated server. They had me change to port 587 for my comast email account, but that doesn't solve my not being able to send outbound from my dedicated server.
Is there anythighn I can do (like change the post my mail server uses to 587) so that I can send outbound mail from my server with outlook (over Comcast connection) or am I just stuck now with using web mail?
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Dec 16, 2007
Please give me the difference. Colo in carrier hotel, we can choose our preferred network provider, but should we do that if we cannot have our own tech in datacenter? How about the supporting service from carrier hotel? Just general question, cause I dont address exactly which facility.
And the second would be more expensive? Saying the same number of rack, amount of bandwidth... Who is providing IP addresses then?
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