RE: Cogent input

2009-06-11 Thread Paul Stewart
Our experience with them was at least one major (longer than an hour)
outages PER MONTH and many of those times they were black holing our
routes in their network which was the most damaging aspect.  The outages
were one thing but when our routes still somehow managed to get
advertised in their network (even though our BGP session was down) that
really created issues.  I have heard from some nearby folks who still
have service that it's gotten better, but we are also in the regional
offering when it comes to IP Transit and have sold connections to many
former Cogent customers who were fed up and left.

I have found with Cogent that you will get a LOT of varying opinions on
them - there are several other players (at least in our market) that are
priced very similar now and have a better history behind them.

The specific de-peering issues never effected us much due to enough
diversity in our upstreams and a fair amount of direct/public peering...

Thanks,

Paul



-Original Message-
From: Justin Shore [mailto:jus...@justinshore.com]
Sent: Thursday, June 11, 2009 9:47 AM
To: NANOG
Subject: Cogent input

I'm in search of some information about Cogent, it's past, present and
future.  I've heard bits and pieces about Cogent's past over the years
but by no means have I actively been keeping up.

I'm aware of some (regular?) depeering issues.  The NANOG archives have
given me some additional insight into that (recurring?) problem.  The
reasoning behind the depeering events is a bit fuzzy though.  I would be

interested in people's opinion on whether or not they should be consider

for upstream service based on this particular issue.  Are there any
reasonable mitigation measures available to Cogent downstreams if
(when?) Cogent were to be depeered again?  My understanding is that at
least on previous depeering occasion, the depeering partner simply
null-routed all prefixes being received via Cogent, creating a blackhole

essentially.  I also recall reading that this meant that prefixes being
advertised and received by the depeering partner from other peers would
still end up in the blackhole.  The only solution I would see to this
problem would be to shut down the BGP session with Cogent and rely on a
2nd upstream.  Are there any other possible steps for mitigation in a
depeering event?

I also know that their bandwidth is extremely cheap.  This of course
creates an issue for technical folks when trying to justify other
upstream options that cost significantly more but also don't have a
damaging history of getting depeered.

Does Cogent still have an issue with depeering?  Are there any
reasonable mitigation measures or should a downstream customer do any
thing in particular to ready themselves for a depeering event?  Does
their low cost outweigh the risks?  What are the specific risks?

Thanks
  Justin







The information transmitted is intended only for the person or entity to which 
it is addressed and contains confidential and/or privileged material. If you 
received this in error, please contact the sender immediately and then destroy 
this transmission, including all attachments, without copying, distributing or 
disclosing same. Thank you.



Re: Cogent input

2009-06-11 Thread Andrew Mulholland
At $JOB-1 we used Cogent.

Lots of horror stories had been heard about them.

We didn't have such problems.

Had nx1Gig from them.

On the few occasions where we had some slight issues, I was happy to
be able to get through to some one useful on the phone quickly, and
not play pass the parcel with call centre operatives.


and at least in the quantities we were buying they were significantly
better value than others, which was the primary reason we went with
them.



andrew



On Thu, Jun 11, 2009 at 2:55 PM, Paul Stewartpstew...@nexicomgroup.net wrote:
 Our experience with them was at least one major (longer than an hour)
 outages PER MONTH and many of those times they were black holing our
 routes in their network which was the most damaging aspect.  The outages
 were one thing but when our routes still somehow managed to get
 advertised in their network (even though our BGP session was down) that
 really created issues.  I have heard from some nearby folks who still
 have service that it's gotten better, but we are also in the regional
 offering when it comes to IP Transit and have sold connections to many
 former Cogent customers who were fed up and left.

 I have found with Cogent that you will get a LOT of varying opinions on
 them - there are several other players (at least in our market) that are
 priced very similar now and have a better history behind them.

 The specific de-peering issues never effected us much due to enough
 diversity in our upstreams and a fair amount of direct/public peering...

 Thanks,

 Paul



 -Original Message-
 From: Justin Shore [mailto:jus...@justinshore.com]
 Sent: Thursday, June 11, 2009 9:47 AM
 To: NANOG
 Subject: Cogent input

 I'm in search of some information about Cogent, it's past, present and
 future.  I've heard bits and pieces about Cogent's past over the years
 but by no means have I actively been keeping up.

 I'm aware of some (regular?) depeering issues.  The NANOG archives have
 given me some additional insight into that (recurring?) problem.  The
 reasoning behind the depeering events is a bit fuzzy though.  I would be

 interested in people's opinion on whether or not they should be consider

 for upstream service based on this particular issue.  Are there any
 reasonable mitigation measures available to Cogent downstreams if
 (when?) Cogent were to be depeered again?  My understanding is that at
 least on previous depeering occasion, the depeering partner simply
 null-routed all prefixes being received via Cogent, creating a blackhole

 essentially.  I also recall reading that this meant that prefixes being
 advertised and received by the depeering partner from other peers would
 still end up in the blackhole.  The only solution I would see to this
 problem would be to shut down the BGP session with Cogent and rely on a
 2nd upstream.  Are there any other possible steps for mitigation in a
 depeering event?

 I also know that their bandwidth is extremely cheap.  This of course
 creates an issue for technical folks when trying to justify other
 upstream options that cost significantly more but also don't have a
 damaging history of getting depeered.

 Does Cogent still have an issue with depeering?  Are there any
 reasonable mitigation measures or should a downstream customer do any
 thing in particular to ready themselves for a depeering event?  Does
 their low cost outweigh the risks?  What are the specific risks?

 Thanks
  Justin





 

 The information transmitted is intended only for the person or entity to 
 which it is addressed and contains confidential and/or privileged material. 
 If you received this in error, please contact the sender immediately and then 
 destroy this transmission, including all attachments, without copying, 
 distributing or disclosing same. Thank you.





Re: Cogent input

2009-06-11 Thread Mike Tancsa

At 10:01 AM 6/11/2009, Andrew Mulholland wrote:


We didn't have such problems.



Had nx1Gig from them.

On the few occasions where we had some slight issues, I was happy to
be able to get through to some one useful on the phone quickly, and
not play pass the parcel with call centre operatives.



This matches our experience as well. When there are issues, they are 
EASY to get a hold of and the people who answer the phone clueful and 
dedicated to dealing with IP issues, not can I help you with your 
long distance bill Also, they are pretty good about keeping us 
informed about maintenance issues. I would not use them as a sole 
provider (why run your own AS if you only have one transit provider?) 
but certainly I am happy keeping them in the mix to date.


We havent seen the same level of issues as some people in YYZ have 
seen, but I think that seems to be more on their 100Mb connections 
for some reason. On the gig service we are on, they are fairly 
reliable.  Not quite as good as TATA/Teleglobe has been for us however.


---Mike 





Re: Cogent input

2009-06-11 Thread Marshall Eubanks


On Jun 11, 2009, at 10:13 AM, Mike Tancsa wrote:


At 10:01 AM 6/11/2009, Andrew Mulholland wrote:


We didn't have such problems.



Had nx1Gig from them.

On the few occasions where we had some slight issues, I was happy to
be able to get through to some one useful on the phone quickly, and
not play pass the parcel with call centre operatives.



This matches our experience as well. When there are issues, they are  
EASY to get a hold of and the people who answer the phone clueful  
and dedicated to dealing with IP issues, not can I help you with  
your long distance bill Also, they are pretty good about  
keeping us informed about maintenance issues. I would not use them  
as a sole provider (why run your own AS if you only have one transit  
provider?) but certainly I am happy keeping them in the mix to date.




+1 from here.

Marshall

We havent seen the same level of issues as some people in YYZ have  
seen, but I think that seems to be more on their 100Mb connections  
for some reason. On the gig service we are on, they are fairly  
reliable.  Not quite as good as TATA/Teleglobe has been for us  
however.


   ---Mike







Re: Cogent input

2009-06-11 Thread Stephen Kratzer
Should have said And, they have no plans to deploy IPv6 in the immediate 
future.

On Thursday 11 June 2009 10:33:25 Stephen Kratzer wrote:
 We've only recently started using Cogent transit, but it's been stable
 since its introduction 6 months ago. Turn-up was a bit rocky since we never
 received engineering details, and engineering was atypical in that two eBGP
 sessions were established, one just to advertise loopbacks, and another for
 the actual feed. The biggest issue we have with them is that they don't
 allow deaggregation. If you've been allocated a prefix of length yy,
 they'll accept only x.x.x.x/yy, not x.x.x.x/yy le 24. Yes, sometimes
 deaggregation is necessary or desirable even if only temporarily.

 And, they have no plans to support IPv6.

 Cogent's official stance on IPv6 is that we will deploy IPv6 when it
 becomes a commercial necessity. We have tested IPv6 and we have our plan
 for rolling it out, but there are no commercial drivers to spend money
 to upgrade a network to IPv6 for no real return on investment.

 Stephen Kratzer
 Network Engineer
 CTI Networks, Inc.

 On Thursday 11 June 2009 09:46:45 Justin Shore wrote:
  I'm in search of some information about Cogent, it's past, present and
  future.  I've heard bits and pieces about Cogent's past over the years
  but by no means have I actively been keeping up.
 
  I'm aware of some (regular?) depeering issues.  The NANOG archives have
  given me some additional insight into that (recurring?) problem.  The
  reasoning behind the depeering events is a bit fuzzy though.  I would be
  interested in people's opinion on whether or not they should be consider
  for upstream service based on this particular issue.  Are there any
  reasonable mitigation measures available to Cogent downstreams if
  (when?) Cogent were to be depeered again?  My understanding is that at
  least on previous depeering occasion, the depeering partner simply
  null-routed all prefixes being received via Cogent, creating a blackhole
  essentially.  I also recall reading that this meant that prefixes being
  advertised and received by the depeering partner from other peers would
  still end up in the blackhole.  The only solution I would see to this
  problem would be to shut down the BGP session with Cogent and rely on a
  2nd upstream.  Are there any other possible steps for mitigation in a
  depeering event?
 
  I also know that their bandwidth is extremely cheap.  This of course
  creates an issue for technical folks when trying to justify other
  upstream options that cost significantly more but also don't have a
  damaging history of getting depeered.
 
  Does Cogent still have an issue with depeering?  Are there any
  reasonable mitigation measures or should a downstream customer do any
  thing in particular to ready themselves for a depeering event?  Does
  their low cost outweigh the risks?  What are the specific risks?
 
  Thanks
Justin





Re: Cogent input

2009-06-11 Thread Steve Bertrand
Stephen Kratzer wrote:

 And, they have no plans to support IPv6.

Ouch!

I hope this is a non-starter for a lot of folks.

Steve


smime.p7s
Description: S/MIME Cryptographic Signature


Re: Cogent input

2009-06-11 Thread Tore Anderson
Hi Justin,

 I'm in search of some information about Cogent, it's past, present and
 future.  I've heard bits and pieces about Cogent's past over the years
 but by no means have I actively been keeping up.

We recently got a 10-gig port in Oslo from them.  Price-wise they were
competitive but absolutely not in a leauge of their own - a couple of
other large providers matched their offers.  In the end the main
differencing factor for us was that their PoP happened to be in the same
building as our data centre, so no local access was required (unlike the
others).

The link hasn't been up for very long so I can't comment on long-term
reliability issues, but so far I've been _very_ happy with them,
everything was up and running just a couple of days after we ordered,
and the staff we've had contact with have been knowledgeable and
helpful.  The service has performed as expected: latency has been low
and I haven't noticed any sub-optimal routing (trampolines) or packet loss.

We multihome, so we're not too concerned about potential de-peerings.  I
would not single-home to any of the transit-free networks anyway, as any
of them could end up on the receiving end of a de-peering.

Best regards,
-- 
Tore Anderson
Redpill Linpro AS - http://www.redpill-linpro.com/
Tel: +47 21 54 41 27



Re: Cogent input

2009-06-11 Thread Bret Clark
I'm skeptical as to where this info came from since this seems nothing
more then nay-say? if people are going to make grandiose statements then
they should justify them with reputable evidence.  I would be extremely
surprised if Cogent engineering isn't working on a IPv6 plan or doesn't
have one already in place. 

Bret


On Thu, 2009-06-11 at 10:37 -0400, Steve Bertrand wrote:

 Stephen Kratzer wrote:
 
  And, they have no plans to support IPv6.
 
 Ouch!
 
 I hope this is a non-starter for a lot of folks.
 
 Steve


Re: Cogent input

2009-06-11 Thread manolo
Stephen Kratzer wrote:
 Should have said And, they have no plans to deploy IPv6 in the immediate 
 future.

 On Thursday 11 June 2009 10:33:25 Stephen Kratzer wrote:
   
 We've only recently started using Cogent transit, but it's been stable
 since its introduction 6 months ago. Turn-up was a bit rocky since we never
 received engineering details, and engineering was atypical in that two eBGP
 sessions were established, one just to advertise loopbacks, and another for
 the actual feed. The biggest issue we have with them is that they don't
 allow deaggregation. If you've been allocated a prefix of length yy,
 they'll accept only x.x.x.x/yy, not x.x.x.x/yy le 24. Yes, sometimes
 deaggregation is necessary or desirable even if only temporarily.

 And, they have no plans to support IPv6.

 Cogent's official stance on IPv6 is that we will deploy IPv6 when it
 becomes a commercial necessity. We have tested IPv6 and we have our plan
 for rolling it out, but there are no commercial drivers to spend money
 to upgrade a network to IPv6 for no real return on investment.

 Stephen Kratzer
 Network Engineer
 CTI Networks, Inc.

 On Thursday 11 June 2009 09:46:45 Justin Shore wrote:
 
 I'm in search of some information about Cogent, it's past, present and
 future.  I've heard bits and pieces about Cogent's past over the years
 but by no means have I actively been keeping up.

 I'm aware of some (regular?) depeering issues.  The NANOG archives have
 given me some additional insight into that (recurring?) problem.  The
 reasoning behind the depeering events is a bit fuzzy though.  I would be
 interested in people's opinion on whether or not they should be consider
 for upstream service based on this particular issue.  Are there any
 reasonable mitigation measures available to Cogent downstreams if
 (when?) Cogent were to be depeered again?  My understanding is that at
 least on previous depeering occasion, the depeering partner simply
 null-routed all prefixes being received via Cogent, creating a blackhole
 essentially.  I also recall reading that this meant that prefixes being
 advertised and received by the depeering partner from other peers would
 still end up in the blackhole.  The only solution I would see to this
 problem would be to shut down the BGP session with Cogent and rely on a
 2nd upstream.  Are there any other possible steps for mitigation in a
 depeering event?

 I also know that their bandwidth is extremely cheap.  This of course
 creates an issue for technical folks when trying to justify other
 upstream options that cost significantly more but also don't have a
 damaging history of getting depeered.

 Does Cogent still have an issue with depeering?  Are there any
 reasonable mitigation measures or should a downstream customer do any
 thing in particular to ready themselves for a depeering event?  Does
 their low cost outweigh the risks?  What are the specific risks?

 Thanks
   Justin
   




   
In Europe they have been good and stable most of the time. In the US
well, they are cogent and I have so many bad experiences with them here
I cannot in all honestly recommend them. But if your looking for cheap
bandwidth to complement another provider its not an unreasonable thing
to do as they price point is competitive.


Manolo


Re: Cogent input

2009-06-11 Thread Chuck Anderson
We've been using Cogent for 4 months now and I have no major 
complaints.



Re: Cogent input

2009-06-11 Thread Tore Anderson
Hello,

* Stephen Kratzer

 We've only recently started using Cogent transit, but it's been
 stable since its introduction 6 months ago. Turn-up was a bit rocky
 since we never received engineering details, and engineering was
 atypical in that two eBGP sessions were established, one just to
 advertise loopbacks, and another for the actual feed. The biggest
 issue we have with them is that they don't allow deaggregation. If
 you've been allocated a prefix of length yy, they'll accept only
 x.x.x.x/yy, not x.x.x.x/yy le 24. Yes, sometimes deaggregation is 
 necessary or desirable even if only temporarily.

Interesting.  I requested exactly that when filling in their BGP
questionnaire, and they set it up - no questions asked.

Also, we have a perfectly normal single BGP session.  The loopback
address of the router we're connected to is found within the 38.0.0.0/8
prefix, which they announce to us over that session like any other route.

 And, they have no plans to support IPv6.

I have been promised, in writing, that they will provide us with native
IPv6 transit before the end of the year.

I'm based in Europe, though.  Perhaps they're more flexible and
customer-friendly here than in the US?

Best regards,
-- 
Tore Anderson
Redpill Linpro AS - http://www.redpill-linpro.com/
Tel: +47 21 54 41 27



Re: Cogent input

2009-06-11 Thread Brad Fleming

On Jun 11, 2009, at 9:33 AM, Stephen Kratzer wrote:


The biggest issue we have with them is that they don't allow
deaggregation. If you've been allocated a prefix of length yy,  
they'll accept

only x.x.x.x/yy, not x.x.x.x/yy le 24. Yes, sometimes deaggregation is
necessary or desirable even if only temporarily.


In our peering session with Cogent, we requested several /16 le /24  
prefixes configured and received no pushback or problems. We are using  
their 1Gbps service so I'm not sure if that buys us additional leeway  
with requests like this or not. We've been customers for nearly two  
full years and intend to continue for at least a third.


-brad fleming



Re: Cogent input

2009-06-11 Thread Stephen Kratzer
Perhaps you missed my quote:

Cogent's official stance on IPv6 is that we will deploy IPv6 when it
becomes a commercial necessity. We have tested IPv6 and we have our plan
for rolling it out, but there are no commercial drivers to spend money
to upgrade a network to IPv6 for no real return on investment.

This came rom a contact at Cogent (not sure of the role, probably sales rep).

On Thursday 11 June 2009 10:49:13 Bret Clark wrote:
 I'm skeptical as to where this info came from since this seems nothing
 more then nay-say? if people are going to make grandiose statements then
 they should justify them with reputable evidence.  I would be extremely
 surprised if Cogent engineering isn't working on a IPv6 plan or doesn't
 have one already in place.

 Bret

 On Thu, 2009-06-11 at 10:37 -0400, Steve Bertrand wrote:
  Stephen Kratzer wrote:
   And, they have no plans to support IPv6.
 
  Ouch!
 
  I hope this is a non-starter for a lot of folks.
 
  Steve





Re: Cogent input

2009-06-11 Thread Stephen Kratzer
Perhaps you missed my amendment:

Should have said And, they have no plans to deploy IPv6 in the immediate 
future.

:)

On Thursday 11 June 2009 11:06:38 Bret Clark wrote:
 Far different response then whoever quoted...And, they have no plans to
 support IPv6.

 On Thu, 2009-06-11 at 11:03 -0400, Stephen Kratzer wrote:
  Perhaps you missed my quote:
 
  Cogent's official stance on IPv6 is that we will deploy IPv6 when it
  becomes a commercial necessity. We have tested IPv6 and we have our plan
  for rolling it out, but there are no commercial drivers to spend money
  to upgrade a network to IPv6 for no real return on investment.
 
  This came rom a contact at Cogent (not sure of the role, probably sales
  rep).
 
  On Thursday 11 June 2009 10:49:13 Bret Clark wrote:
   I'm skeptical as to where this info came from since this seems nothing
   more then nay-say? if people are going to make grandiose statements
   then they should justify them with reputable evidence.  I would be
   extremely surprised if Cogent engineering isn't working on a IPv6 plan
   or doesn't have one already in place.
  
   Bret
  
   On Thu, 2009-06-11 at 10:37 -0400, Steve Bertrand wrote:
Stephen Kratzer wrote:
 And, they have no plans to support IPv6.
   
Ouch!
   
I hope this is a non-starter for a lot of folks.
   
Steve





Re: Cogent input

2009-06-11 Thread Raymond Dijkxhoorn

Hi!


Cogent's official stance on IPv6 is that we will deploy IPv6 when it
becomes a commercial necessity. We have tested IPv6 and we have our
plan
for rolling it out, but there are no commercial drivers to spend money
to upgrade a network to IPv6 for no real return on investment.



Thats strange they are running pilots with customers on v6 in Amsterdam.



Not really so strange.  ISPs often pilot features (v6, multicast, etc)
that they have no immediate intention of deploying, so that they have
experience if and when it becomes profitable/sensible to deploy them.


Not from what i have been told, but hey i am not working there. We got a 
v6 transit offer as pilot from them so perhaps they are moving towards 
live service  Would not be strange in this current stage...


Bye,
Raymond.




Re: Cogent input

2009-06-11 Thread Marshall Eubanks


On Jun 11, 2009, at 11:03 AM, Stephen Kratzer wrote:


Perhaps you missed my quote:

Cogent's official stance on IPv6 is that we will deploy IPv6 when it
becomes a commercial necessity. We have tested IPv6 and we have our  
plan

for rolling it out, but there are no commercial drivers to spend money
to upgrade a network to IPv6 for no real return on investment.


FWIW, they have said basically the same thing about multicast.

Regards
Marshall




This came rom a contact at Cogent (not sure of the role, probably  
sales rep).


On Thursday 11 June 2009 10:49:13 Bret Clark wrote:
I'm skeptical as to where this info came from since this seems  
nothing
more then nay-say? if people are going to make grandiose statements  
then
they should justify them with reputable evidence.  I would be  
extremely
surprised if Cogent engineering isn't working on a IPv6 plan or  
doesn't

have one already in place.

Bret

On Thu, 2009-06-11 at 10:37 -0400, Steve Bertrand wrote:

Stephen Kratzer wrote:

And, they have no plans to support IPv6.


Ouch!

I hope this is a non-starter for a lot of folks.

Steve










Re: Cogent input

2009-06-11 Thread seph
Here as well. We're a small content provider, and we have cogent as one
of our ISPs. Though I wouldn't feel comfortable using only them, my
experience has been pretty good. Their NOC is competent, and service has
been reliable.

seph

Bret Clark bcl...@spectraaccess.com writes:

 I hate when these questions get asked, because as the saying goes...a
 person happy with a service will only tell one other person, but a
 person unhappy with a service with tell ten other people.  So I think a
 lot of times you'll get skewed responses...but with that said, we've
 been using Cogent now for a year and no complaints at all. Had some
 minor downtime back in April due to a hardware failure, but Cogent
 responded extremely quickly, scheduled an emergency maintainance and had
 us  running rather quickly. Face it, hardware problems happen so I can't
 blame Cogent on the failure. The few times I've dealt with their tech
 support group I found 99% of them very knowledgeable and I know that
 when we initially turned on the link they went the extra mile to resolve
 some initial problems during the weekend time frame. 

 My 2 cents and with any provider mileage will vary,
 Bret



 On Thu, 2009-06-11 at 15:01 +0100, Andrew Mulholland wrote:

 At $JOB-1 we used Cogent.
 
 Lots of horror stories had been heard about them.
 
 We didn't have such problems.
 
 Had nx1Gig from them.
 
 On the few occasions where we had some slight issues, I was happy to
 be able to get through to some one useful on the phone quickly, and
 not play pass the parcel with call centre operatives.
 
 
 and at least in the quantities we were buying they were significantly
 better value than others, which was the primary reason we went with
 them.
 
 
 
 andrew
 
 
 
 On Thu, Jun 11, 2009 at 2:55 PM, Paul Stewartpstew...@nexicomgroup.net 
 wrote:
  Our experience with them was at least one major (longer than an hour)
  outages PER MONTH and many of those times they were black holing our
  routes in their network which was the most damaging aspect.  The outages
  were one thing but when our routes still somehow managed to get
  advertised in their network (even though our BGP session was down) that
  really created issues.  I have heard from some nearby folks who still
  have service that it's gotten better, but we are also in the regional
  offering when it comes to IP Transit and have sold connections to many
  former Cogent customers who were fed up and left.
 
  I have found with Cogent that you will get a LOT of varying opinions on
  them - there are several other players (at least in our market) that are
  priced very similar now and have a better history behind them.
 
  The specific de-peering issues never effected us much due to enough
  diversity in our upstreams and a fair amount of direct/public peering...
 
  Thanks,
 
  Paul
 
 
 
  -Original Message-
  From: Justin Shore [mailto:jus...@justinshore.com]
  Sent: Thursday, June 11, 2009 9:47 AM
  To: NANOG
  Subject: Cogent input
 
  I'm in search of some information about Cogent, it's past, present and
  future.  I've heard bits and pieces about Cogent's past over the years
  but by no means have I actively been keeping up.
 
  I'm aware of some (regular?) depeering issues.  The NANOG archives have
  given me some additional insight into that (recurring?) problem.  The
  reasoning behind the depeering events is a bit fuzzy though.  I would be
 
  interested in people's opinion on whether or not they should be consider
 
  for upstream service based on this particular issue.  Are there any
  reasonable mitigation measures available to Cogent downstreams if
  (when?) Cogent were to be depeered again?  My understanding is that at
  least on previous depeering occasion, the depeering partner simply
  null-routed all prefixes being received via Cogent, creating a blackhole
 
  essentially.  I also recall reading that this meant that prefixes being
  advertised and received by the depeering partner from other peers would
  still end up in the blackhole.  The only solution I would see to this
  problem would be to shut down the BGP session with Cogent and rely on a
  2nd upstream.  Are there any other possible steps for mitigation in a
  depeering event?
 
  I also know that their bandwidth is extremely cheap.  This of course
  creates an issue for technical folks when trying to justify other
  upstream options that cost significantly more but also don't have a
  damaging history of getting depeered.
 
  Does Cogent still have an issue with depeering?  Are there any
  reasonable mitigation measures or should a downstream customer do any
  thing in particular to ready themselves for a depeering event?  Does
  their low cost outweigh the risks?  What are the specific risks?
 
  Thanks
   Justin
 
 
 
 
 
  
 
  The information transmitted is intended only for the person or entity to 
  which it is addressed and 

RE: Cogent input

2009-06-11 Thread Alex Rubenstein
 I'm aware of some (regular?) depeering issues.  The NANOG archives have

AFAIR, there has never been a black-holing, just disappearance of routes. If 
you are properly multihomed, this is irrelevant and you continue to eat your 
ice cream and chuckle while they fight it out. It's amusing, really.

 I also know that their bandwidth is extremely cheap.  This of course
 creates an issue for technical folks when trying to justify other
 upstream options that cost significantly more but also don't have a
 damaging history of getting depeered.

It's not as relatively cheap as it used to be. A variety of others can be had 
in the same ballpark (Telia, Tiscali, Seabone, etc.)







Re: Any2 Exchange experiences to share?

2009-06-11 Thread Patrick W. Gilmore

On Jun 11, 2009, at 3:56 AM, Michael J McCafferty wrote:

	I am interested to hear any experiences with the Any2 Exchange at  
One Wilshire Blvd, especially regarding performance and reliability  
to the other exchange participants in comparison to routing to the  
same networks via Tier 1 transit providers.
   We are in San Diego and have easy access to the exchange via  
transport offered by our data center facility who does have physical  
presence at OWB, but *we* are not physically in OWB, ~4.5ms away and  
some $ for transport to OWB. All things considered, the cost will be  
about the same to route via Tier 1 transit providers from San Diego  
as it will be to transport to OWB to the exchange. The basic  
question is, Does it improve my network enough to connect to the  
exchange?


If it's cost neutral, I'd go with peering.

Additional vectors / choices are always useful.  Plus as your network  
grows, you will get a cost benefit from the peering as that is fixed- 
cost.  (Actually a step function as you upgrade, but you get the point.)


Any2 runs a fine IX.  Very few problems.  OWB has had some issues with  
power in the past, but I think (hope) they are all resolved.


--
TTFN,
patrick




Re: Cogent input

2009-06-11 Thread Daniel Verlouw


On Jun 11, 2009, at 5:28 PM, Raymond Dijkxhoorn wrote:
Not from what i have been told, but hey i am not working there. We  
got a v6 transit offer as pilot from them so perhaps they are moving  
towards live service  Would not be strange in this current  
stage...


same thing here.

routing table still looks pretty empty though:

dan...@jun1.bit-2a show route aspath-regex .* 174 .* table inet6.0  
| match BGP | count

Count: 0 lines

--Daniel.



Re: Cogent input

2009-06-11 Thread Justin Shore

Tore Anderson wrote:

advertise loopbacks, and another for the actual feed. The biggest
issue we have with them is that they don't allow deaggregation. If
you've been allocated a prefix of length yy, they'll accept only
x.x.x.x/yy, not x.x.x.x/yy le 24. Yes, sometimes deaggregation is 
necessary or desirable even if only temporarily.


Interesting.  I requested exactly that when filling in their BGP
questionnaire, and they set it up - no questions asked.


It would be a show-stopper for us if they didn't let us deaggregate. 
We're not really wanting their service for our existing service area. 
We're wanting to use it to expand to a new service area that is only 
connected by a much lower-speed service back to the bulk of our current 
network for specific services like voice.  Our PI space is currently 
broken up to 1) let us effect some measure of load-balancing with Cox 
(any prefixes we advertised out Cox instead of our much larger tier-1 
resulted in a wildly disproportionate amount of preference given to Cox; 
not sure why) and 2) let this new venture get started with a 
reasonably-sized allotment of IP.  It will be advertised out local 
providers in that area and also at our main peering point with 
significant prepending.  Visa versa for our other prefixes.  We have to 
deaggregate a little bit to make this work (but not excessively of course).



I have been promised, in writing, that they will provide us with native
IPv6 transit before the end of the year.


I hope at least some SPs make this commitment back in the states.  I 
can't find any tier-1s that can provide us with native v6.  Our tier-1 
upstream has a best effort test program in place that uses ipv6ip 
tunnels.  The other upstream says that they aren't making any public 
IPv6 plans yet.  It's hard to push the migration to v6 along when native 
v6 providers aren't readily available.


Justin





Re: Cogent input

2009-06-11 Thread Paul Timmins




I hope at least some SPs make this commitment back in the states.  I 
can't find any tier-1s that can provide us with native v6.  Our tier-1 
upstream has a best effort test program in place that uses ipv6ip 
tunnels.  The other upstream says that they aren't making any public 
IPv6 plans yet.  It's hard to push the migration to v6 along when 
native v6 providers aren't readily available.


GlobalCrossing told me today I can order native IPv6 anywhere on their 
network. Don't know if they count as Tier 1 on your list, though. VZB 
has given me tunnels for a while, hopefully they'll get their pMTU issue 
fixed so we can do more interesting things with it.


-Paul



RE: Cogent input

2009-06-11 Thread John van Oppen
NTT (2914) and GBLX (3549) both do native v6...  most everyone else on
the tier1 list does tunnels.  :(

There are some nice tier2 networks who do native v6, tiscali and he.net
come to mind.


-John

-Original Message-
From: Paul Timmins [mailto:p...@telcodata.us] 
Sent: Thursday, June 11, 2009 4:00 PM
To: Justin Shore
Cc: NANOG
Subject: Re: Cogent input



 I hope at least some SPs make this commitment back in the states.  I 
 can't find any tier-1s that can provide us with native v6.  Our tier-1

 upstream has a best effort test program in place that uses ipv6ip 
 tunnels.  The other upstream says that they aren't making any public 
 IPv6 plans yet.  It's hard to push the migration to v6 along when 
 native v6 providers aren't readily available.

GlobalCrossing told me today I can order native IPv6 anywhere on their 
network. Don't know if they count as Tier 1 on your list, though. VZB 
has given me tunnels for a while, hopefully they'll get their pMTU issue

fixed so we can do more interesting things with it.

-Paul




Re: Cogent input

2009-06-11 Thread Warren Bailey
Does GBLX still have their data center in Chinatown(NYC)??? I remember about 10 
years ago how amazed I was with that place... 

- Original Message -
From: John van Oppen j...@vanoppen.com
To: Paul Timmins p...@telcodata.us; Justin Shore jus...@justinshore.com
Cc: NANOG na...@merit.edu
Sent: Thu Jun 11 15:31:24 2009
Subject: RE: Cogent input

NTT (2914) and GBLX (3549) both do native v6...  most everyone else on
the tier1 list does tunnels.  :(

There are some nice tier2 networks who do native v6, tiscali and he.net
come to mind.


-John

-Original Message-
From: Paul Timmins [mailto:p...@telcodata.us] 
Sent: Thursday, June 11, 2009 4:00 PM
To: Justin Shore
Cc: NANOG
Subject: Re: Cogent input



 I hope at least some SPs make this commitment back in the states.  I 
 can't find any tier-1s that can provide us with native v6.  Our tier-1

 upstream has a best effort test program in place that uses ipv6ip 
 tunnels.  The other upstream says that they aren't making any public 
 IPv6 plans yet.  It's hard to push the migration to v6 along when 
 native v6 providers aren't readily available.

GlobalCrossing told me today I can order native IPv6 anywhere on their 
network. Don't know if they count as Tier 1 on your list, though. VZB 
has given me tunnels for a while, hopefully they'll get their pMTU issue

fixed so we can do more interesting things with it.

-Paul




Re: Blackberry.net Email Administration Contact?

2009-06-11 Thread Bruce Horth
https://ws.arin.net/whois/?queryinput=!%20RIM

ab...@rim.com
ipad...@rim.com


On Wed, Jun 10, 2009 at 22:08, Mark Pacep...@jolokianetworks.com wrote:
 At the moment it appears as tho the blackberry email storm has
 subsided.  I thought I'd share a most excellent letter I got from
 Blackberry after one of the Nanog users was kind enough to forward my
 email along to them:

 Hello Mark,

 Thank you for contacting BlackBerry Customer Support.

 We have determined that you purchased your BlackBerry product through one of 
 our carrier partners.  Your service provider fields general queries and 
 provides technical support for all BlackBerry smartphone-related issues and 
 can act as your first point of contact in these matters.

 You may also have the option to receive fee-based support directly from 
 Research In Motion, the manufacturer and wireless experts for the BlackBerry 
 solution. If you would like to learn more about this option, please dial the 
 appropriate telephone number below and enter option 3 in the phone menu to 
 be routed to BlackBerry Customer Care.

 If your organization has subscribed to BlackBerry Technical Support 
 Services, please contact your IT department and have one of your named 
 callers contact BlackBerry Technical Support.

 Note: BlackBerry Technical Support Services is an annual subscription 
 program providing software maintenance and technical support services for 
 your BlackBerry solution. Named callers are personnel within your 
 organization who are authorized to contact our support staff. For more 
 information on BlackBerry Technical Support Services, please visit:

 http://www.blackberry.com/support/tsupport/

 All BlackBerry smartphone users have free access to the BlackBerry Technical 
 Solution Center. The BlackBerry Technical Solution Center provides a 
 repository of support information, documentation and frequently asked 
 questions, with enhanced search capabilities so you can easily search for 
 and find the BlackBerry support information you need. Please visit:

 http://na.blackberry.com/eng/support/

 Thank you again for contacting us Mark and have a nice day.

 Sincerely,
 Lucky me!  I can contact my non-existent carrier or I can pay for
 support on a product I don't own that is flooding my network!  I feel
 privileged...


 pace

 Mark Pace wrote:
 If anyone has a contact within Blackberry.net's email department, I'd
 greatly appreciate it if you could get me in touch with them.  We're
 getting hundreds of connections a second from their mail servers and
 have had to block them.


 Thanks in advance,
 Mark Pace





-- 
BH



IPTV List serv

2009-06-11 Thread Charles Wyble

I know someone was asking about a VOIP list serv the other day.

Well IPTV is another big area that could use a list.


Check out https://puck.nether.net/pipermail/iptv-users/




Re: Cogent input

2009-06-11 Thread Tore Anderson
Good morning,

* John van Oppen

 NTT (2914) and GBLX (3549) both do native v6...  most everyone else
 on the tier1 list does tunnels.  :(
 
 There are some nice tier2 networks who do native v6, tiscali and
 he.net come to mind.

It's worth noting that being a v4 tier1/transit-free network doesn't
necessarily mean that they're the same in the v6 world.  For instance,
Google appears to be a transit-free v6 network.  It wouldn't surprise me
if the same is true for other big v6 players like Tinet and HE.

Anyway, when looking for v6 transit the following page might be useful:

http://www.sixxs.net/faq/connectivity/?faq=ipv6transit

Best regards,
-- 
Tore Anderson
Redpill Linpro AS - http://www.redpill-linpro.com/
Tel: +47 21 54 41 27