I should have stated that I tried icmpv6, UDP, and TCP traceroute with
the same results. Looks like Cogent is not returning TTL expired IPV6
packets within their core. I can only guess that this is a result of
using 6PE and propagating the IPV6 TTL into MPLS.
Clinton
On Sun, Nov 3, 2013, at
IPV6 connectivity to fireball.acr.fi is failing inside Cogent AS174. I
have already contacted the Cogent NOC, but I haven't heard anything back
yet. I'm wondering if somebody else with Cogent IPV6 connectivity can
run some tests. IPV4 connectivity is working fine.
--
Clinton Work
IPV6 connectivity to fireball.acr.fi is failing inside Cogent AS174. I
have already contacted the Cogent NOC, but I haven't heard anything back
yet. I'm wondering if somebody else with Cogent IPV6 connectivity can
run some tests. IPV4 connectivity is working fine.
It works from AS2547
, but I haven't heard anything back
yet. I'm wondering if somebody else with Cogent IPV6 connectivity can
run some tests. IPV4 connectivity is working fine.
connectivity to fireball.acr.fi is failing inside Cogent AS174. I
have already contacted the Cogent NOC, but I haven't heard anything back
yet. I'm wondering if somebody else with Cogent IPV6 connectivity can
run some tests. IPV4 connectivity is working fine.
I can reach fireball.acr.fi on TCP port 80 so it looks like Cogent is
just filtering or dropping IPV6 traceroute packets.
Thanks for checking connectivity from other locations.
--
Clinton Work
Calgary, AB
On Sun, Nov 3, 2013, at 01:38 PM, Andrew Fried wrote:
From AS54054 in Ashburn, VA I
On Nov 3, 2013, at 15:38, Clinton Work clin...@scripty.com wrote:
I can reach fireball.acr.fi on TCP port 80 so it looks like Cogent is
just filtering or dropping IPV6 traceroute packets.
Traceroute packets is extremely vague. As a general rule, if you
want to discover a complete path between
Here in the Netherlands we got it 'free' (i.e. dual-stack on top of the
IPv4 transit without extra cost)
But we're currently looking into an alternative for a provider with
non-broken IPv6 transit and cancel our contract with Cogent.
They called us once asking how satisfied we were with their
I had to ask this here a while back, so I can now share. :-)
IPv6 addresses are written as 8 16-bit chunk separated by colons
(optionally with the longest consecutive set of :0 sections replaced
with ::). A /112 means the prefix is 7 of the 8 chunks, which means you
can use ::1 and ::2 for
On Jun 8, 2011, at 7:24 PM, William Herrin wrote:
On Wed, Jun 8, 2011 at 9:58 PM, Kelly Setzer kelly.set...@wnco.com wrote:
IPv6 newbie alert!
I thought the maximum prefix length for IPv6 was 64 bits,
so the comment about a v6 /112 for peering vexed me. I
have Googled so much that Larry
On Wed, 2011-06-08 at 23:39 -0400, ML wrote:
Did Cogent have the gumption to charge you more for IPv6 too?
We have a bit of transit from them (~20Mbit or so) to stay connected to
their customers.
Getting IPv6 setup was really simple. No extra charges. It's been easier
than via our existing L3
On Wed, Jun 08, 2011 at 10:33:29PM -0500, Chris Adams wrote:
Once upon a time, William Herrin b...@herrin.us said:
Now, as to why they'd choose a /112 (65k addresses) for the interface
between customer and ISP, that's a complete mystery to me.
I had to ask this here a while back, so I can
Please don't use /127:
Use of /127 Prefix Length Between Routers Considered Harmful
http://tools.ietf.org/html/rfc3627
Do keep up. :-)
http://tools.ietf.org/html/rfc6164
Rob
On 09-06-11 14:01, Chuck Anderson wrote:
Please don't use /127:
Use of /127 Prefix Length Between Routers Considered Harmful
http://tools.ietf.org/html/rfc3627
Well, this RFC says not to use PREFIX::/127. You are safe to use other
/127's within your prefix.
--
Grzegorz Janoszka
You can actually use DHCPv6 to assign addresses to hosts dynamically
on longer than /64 networks.
However, you may have to go to some effort to add DHCPv6 support to
those hosts first.
Also, there is no prefix-length (or default router) option in DHCPv6,
so you have to configure the
On 6/9/2011 4:39 AM, Tom Hill wrote:
On Wed, 2011-06-08 at 23:39 -0400, ML wrote:
Did Cogent have the gumption to charge you more for IPv6 too?
We have a bit of transit from them (~20Mbit or so) to stay connected to
their customers.
Getting IPv6 setup was really simple. No extra charges.
On 6/9/2011 1:58 AM, Aftab Siddiqui wrote:
Still that doesn't give any reason to provide /112 for point to point
connectivitiy. Seriously, I'm peering with a transit provider with /126 and
when I asked for a reason they said, ease of management. How come Subnetting
/32 to /126 is ease of
On Thu, Jun 9, 2011 at 10:02 AM, Jack Bates jba...@brightok.net wrote:
Some networks prefer a uniform numbering scheme. /112 allows for reasonable
addressing needs on a circuit. In addition, while Ethernet is often used in
a point-to-point access circuit, such layouts may change and renumbering
On Jun 9, 2011, at 7:02 AM, Jack Bates wrote:
On 6/9/2011 1:58 AM, Aftab Siddiqui wrote:
Still that doesn't give any reason to provide /112 for point to point
connectivitiy. Seriously, I'm peering with a transit provider with /126 and
when I asked for a reason they said, ease of management.
On 6/9/2011 10:02 AM, William Herrin wrote:
I follow the reasoning, but unless you attach undue importance to the
colons you get basically the same result with a /124.
I guess choosing /112 for a point to point link is one of the weird
side-effects of placing :'s in the address at fixed
IPv6 newbie alert!
I thought the maximum prefix length for IPv6 was 64 bits, so the comment
about a v6 /112 for peering vexed me. I have Googled so much that Larry Page
called me and asked me to stop.
Can someone please point me to a resource that explains how IPv6 subnets
larger than
:18 -0500
From: Kelly Setzer kelly.set...@wnco.com
Subject: RE: Cogent IPv6
To: nanog@nanog.org nanog@nanog.org
Message-ID:
fc8abe0e5d384a489cdb16c4a8eb77839b3e9c6...@msmail01.luv.ad.swacorp.com
Content-Type: text/plain; charset=utf-8
-Original Message-
From: r
On 9 jun 2011, at 10:32, Owen DeLong wrote:
You can actually use DHCPv6 to assign addresses to hosts dynamically
on longer than /64 networks.
The trouble is that DHCPv6 can't tell you the prefix length for your address,
so either set up the routers to advertise this prefix (but without the
On 9 jun 2011, at 14:19, sth...@nethelp.no wrote:
It is perfectly possible to use RA *only* for the default router, and
not announce any prefix at all. This implies a link-local next hop.
Router advertisements always use the router's link local address, you can't get
a router's global address
On Thu, Jun 9, 2011 at 8:50 AM, ML m...@kenweb.org wrote:
I guess someone with a 1 Gb commit in a not so small city deserves to be
charged extra for a few Mbps of IPv6...
For a not so full table at that.
We canceled some 10GbE Cogent circuits because of Cogent's refusal to
provision IPv6
Don't assume that DHCPv6 is the same as DHCP.
DHCPv6 does not provide route information because this task is handled
by RA in IPv6.
An IPv6 RA has flags for Managed (M), Other (O), and Autonomous (A)
address configuration. None of these flags are exclusive.
While most routers have the A flag
On 09/06/2011 17:59, Iljitsch van Beijnum wrote:
can't get a router's global address from this. IPv6 routing protocols
also pretty much only use link locals
Really? I guess my eyes must be playing tricks on me then.
Nick
On Thu, Jun 9, 2011 at 1:21 PM, Nick Hilliard n...@foobar.org wrote:
On 09/06/2011 17:59, Iljitsch van Beijnum wrote:
can't get a router's global address from this. IPv6 routing protocols
also pretty much only use link locals
Really? I guess my eyes must be playing tricks on me then.
Nick
On 09/06/2011 18:19, Ray Soucy wrote:
DHCPv6 does not provide route information because this task is handled
by RA in IPv6.
Thankfully this silliness is in the process of being fixed, along with
prefix delegation - so in future, there will be no requirement for either
RA or cartloads of
On 09/06/2011 18:26, Ray Soucy wrote:
What OS?
IOS, for example (as opposed to iOS which is just freebsd from that point
of view). JunOS uses link-locals.
Iljitsch noted: IPv6 routing protocols also pretty much only use link
locals. This is not true in the general case.
Nick
Discussion has been had on-list before, suffice to say I respectfully
disagree that there is a problem with the current design.
On Thu, Jun 9, 2011 at 1:37 PM, Nick Hilliard n...@foobar.org wrote:
On 09/06/2011 18:19, Ray Soucy wrote:
DHCPv6 does not provide route information because this task
Some networks prefer a uniform numbering scheme. /112 allows for
reasonable addressing needs on a circuit. In addition, while Ethernet
is
often used in a point-to-point access circuit, such layouts may change
and renumbering would be annoying.
Finally, having chunks 4-7 define the
On Jun 9, 2011, at 9:56 AM, Iljitsch van Beijnum wrote:
On 9 jun 2011, at 10:32, Owen DeLong wrote:
You can actually use DHCPv6 to assign addresses to hosts dynamically
on longer than /64 networks.
The trouble is that DHCPv6 can't tell you the prefix length for your address,
so either
I'm sure someone here is doing IPv6 peering with cogent. We've got a Gig
with them, So they don't do that dual peering thing with us. (They do it on
another 100Mb/s circuit we have... I despise it.)
Just kind of curious how they go about it.
Do they issue you a small IPv6 block for your
On 6/8/11 9:51 AM, Nick Olsen wrote:
I'm sure someone here is doing IPv6 peering with cogent. We've got a Gig
with them, So they don't do that dual peering thing with us. (They do it on
another 100Mb/s circuit we have... I despise it.)
Just kind of curious how they go about it.
Do they issue you
Nick,
On Wed, Jun 8, 2011 at 9:51 AM, Nick Olsen n...@flhsi.com wrote:
I'm sure someone here is doing IPv6 peering with cogent.
(snip)
Any things to be aware of before
pulling the trigger on it? (Other then them not having connectivity to HE's
IPv6 side of things, Wish they would fix that
On Wed, 8 Jun 2011 09:51:21 -0400, Nick Olsen wrote:
I'm sure someone here is doing IPv6 peering with cogent. We've got a
Gig
with them, So they don't do that dual peering thing with us. (They do
it
on
another 100Mb/s circuit we have... I despise it.)
Just kind of curious how they go about
Do they issue you a small IPv6 block for your interface, just like they
do
for IPv4? Is it a separate session? Any things to be aware of before
pulling the trigger on it? (Other then them not having connectivity to
Hi Nick,
They issued a /112 for our interface with a separate BGP
On Jun 8, 2011, at 6:51, Nick Olsen wrote:
I'm sure someone here is doing IPv6 peering with cogent. We've got a Gig
with them, So they don't do that dual peering thing with us. (They do it on
another 100Mb/s circuit we have... I despise it.)
Just kind of curious how they go about it.
Do
On Jun 8, 2011, at 7:18 AM, r...@u13.net wrote:
On Wed, 8 Jun 2011 09:51:21 -0400, Nick Olsen wrote:
I'm sure someone here is doing IPv6 peering with cogent. We've got a Gig
with them, So they don't do that dual peering thing with us. (They do it
on
another 100Mb/s circuit we have... I
-Original Message-
From: r...@u13.net [mailto:r...@u13.net]
Sent: Wednesday, June 08, 2011 9:19 AM
To: nanog@nanog.org
Subject: Re: Cogent IPv6
On Wed, 8 Jun 2011 09:51:21 -0400, Nick Olsen wrote:
I'm sure someone here is doing IPv6 peering with cogent. We've got a
Gig
[SNIP
On Wed, Jun 8, 2011 at 9:58 PM, Kelly Setzer kelly.set...@wnco.com wrote:
IPv6 newbie alert!
I thought the maximum prefix length for IPv6 was 64 bits,
so the comment about a v6 /112 for peering vexed me. I
have Googled so much that Larry Page called me and
asked me to stop.
Can someone
Once upon a time, William Herrin b...@herrin.us said:
Now, as to why they'd choose a /112 (65k addresses) for the interface
between customer and ISP, that's a complete mystery to me.
I had to ask this here a while back, so I can now share. :-)
IPv6 addresses are written as 8 16-bit chunk
On 6/8/2011 9:51 AM, Nick Olsen wrote:
I'm sure someone here is doing IPv6 peering with cogent. We've got a Gig
with them, So they don't do that dual peering thing with us. (They do it on
another 100Mb/s circuit we have... I despise it.)
Just kind of curious how they go about it.
Do they issue
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