Re: Undersea cable damages in the Atlantic?
Also FWIW, we've been informed of outages on TGN-EA (since 15/01/22) and IMEWE (since 15/10/21), both "away from the Mumbai coast." No ETR currently available. Rob
Re: Alien waves
Hi, Alien wavelengths is a fairly old concept and more generally just refers to running any wavelength over a DWDM system that isn't generated by that system's own transponders. These days it is more about leasing spectrum (Spectrum as a Service), but that comes in several different flavours. There is the basic "I want access to 250GHz of C-band to light in whatever way I want", which only tends to happen between consenting networks (e.g. in the R space, or between trusted providers), or as trials due to the risks that ytti mentioned. That could be a single contiguous superchannel of spectrum if you have a colourless/flexgrid add/drop system, or 5 x 50GHz individual channels. At the other end of the spectrum (ahem) is managed transponders. This is more suitable for, e.g., the submarine case. You have guaranteed access to a certain amount of spectrum, but the transponders go into the fibre owner's DWDM equipment and are managed by them and you connect to the transponder in much the same way as a traditional circuit. You can theoretically upgrade as newer transponders come out that use spectrum more efficiently, or as demand requires it for a nominal (!) fee to cover the hardware and engineering. There are options between those models, but it's rarely a pricebook item at the moment and will need to be discussed with the providers. It's also usually intended for fairly large requirements. Cheers, Rob
Re: Whois vs GDPR, latest news
I don't. I have better things to do than babysit various accounts
I've signed up over the years. Just because someone signs up for an
account and forgets about it is not a good enough reason to have my
information DESTROYED WITHOUT MY PERMISSION if I do happen to be busy
that week to sign in somewhere to accept a legal disclaimer.
It’s only ‘{one|that} week’ from today. The people that hold your
personal data appear to have not planned in advance.
Why should people (“data processors”) have the right to forward your
personal contact details in perpetuity? Isn’t that a problem? They
don’t need to ask permission to use those details for purposes for
which you’ve already granted permission.
GDPR is touted as a policy to tackle the issue of the larger players
abusing their market positions and our trust; instead, so far, my lack
of response would just ensure that I am unsubscribed from my alumni
association in the UK; what good does it do to me?!
This may be a misunderstanding, or a cautious approach, from your alma
mater. If you’ve given them permission for them to hold your data
about their activities all is well. Many companies are choosing this as
an opportunity to confirm that permission for the sake of future legal
argument.
Rob
Re: Cogent BCP-38
> Well, if you are using public IP addresses for infra you are violating your > RIR’s policy more than likely. [Citation needed.] :) Rob
Re: BBC reports Kenya fiber break
Constantly shifting ice shelves and glaciers make a terrestrial cable landing very difficult to implement on Antarctica. Satellite connectivity is likely the only feasible option. There are very few places in Antarctica that are reliably ice-free enough of the time to make a viable terrestrial landing station. Getting connectivity from the landing station to other places on the continent is another matter altogether. The British Antarctic Survey certainly use (used) satellite: http://www.antarctica.ac.uk/bas_research/techniques/tech7.php They gave a good presentation about it a couple of years ago: http://webmedia.company.ja.net/content/documents/shared/networkshop300310/blake_theuseofnetworksinthepolarregions.pdf Cheers, Rob
Re: Cogent IPv6
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
Re: Packet over SONET failback
PoS failure detection happens in under 50ms, but what about the failback? Same deal? I ask because I've got two routers connected to opposite ends of a spare PoS link that I've been playing with and I'm noticing that the failback on the far side seems to be about 15 seconds (assuming the near side failover was initiated with an interface shutdown command and thusly no shut'd to re-enable the link). I think there are a couple of issues at play here. First of all, SONET/SDH restoration happens at layer 1, whereas it looks like you're waiting for a router to reroute. Your reroute times will be tied to recalculation of IGPs. Secondly, is this with a Cisco? Try setting pos ais-shut on both sides. Unless you do that, the router won't generate and AIS, and it will take the encapsulation timeout (HDLC, PPP) for the interface on the other side to go down and signal that to the routing protocols on top. Rob
Re: Using IPv6 with prefixes shorter than a /64 on a LAN
You must be kiddin'... You're considering going through this mess again in a few decades? I'm mildly surprised if you think we're going to be done with *this* mess in a few decades. Rob
Re: ISP customer assignments
This is a bit annoying though, yeah. But, I'm not sure I can think of a good solution that doesn't involve us changing the routing system so that we can handle a huge amount of intentional de-aggregates or something. Within the RIPE region we're currently discussing a document on IPv6 route aggregation that acknowledges there are cases where it may be necessary to break up a /32 into a limited number of smaller blocks. Following discussion at the meeting last week I need to revise it, but the previous draft is here: http://www.ripe.net/ripe/maillists/archives/routing-wg/2009/msg00120.html Cheers, Rob
Re: Outages in wales ?
but a buddy in wales have massive problems with internet connectivity For those that don't know, Wales is a relatively small constituent country of the United Kingdom (size-wise, it is 'about the size of Wales'): http://en.wikipedia.org/wiki/The_size_of_Wales Small as it is, it has a number of different internet providers using ADSL, cable, leased lines and DWDM. For it to be on NANOG, I assume there is reason to believe the outage is widespread and your buddy has already contacted their Internet Service Provider? For what is is worth, I'm not seeing any outages to the academic sites in Wales. Or maybe there has been a bit of storm which has blown it 3,500 miles to the west. If it has, please look after it, especially mid-Wales and North Wales, they really are quite beautiful. :) Best regards, Rob
Re: IPv4 Anycast?
Then there is basically no inter-As anycast besides the anycast prefix for DNS root, since I only noticed like 8 prefixes that are announced by more than 3 ASes.. ...but inter-domain anycast is often achieved by using a single origin AS, which is then transited through the 'provider' autonomous systems. In which case, you may be looking for the wrong thing. Rob
Re: Google Over IPV6
When I posted my original note, I was not really looking for end user feedback, but rather is anyone peering V6 with them on either a public fabric or private peer. Any idea if they have native V6 transit, or are tunneling, and to where. They are peering over some IXPs and private peerings with native IPv6, and I believe Google like to check IPv6 connectivity before putting your DNS resolver addresses in a whitelist so records are returned. Regards, Rob
Re: Dynamic IP log retention = 0?
Not to disagree with any of your points, but the OP (which you quoted!) was talking about Covad, while you're bashing Comcast. Any sufficiently advanced NANOG conversation is indistinguishable from Comcast-bashing. Rob (Not agreeing, just observing.)
Re: Mcast mpeg2 and unicast h.264 for NANOG-45
25 mbit HDV, mpeg Transport Stream, UDP: 233.0.59.45 port 1234 Not seeing the mcast feed at all. What's the source address so we can try to mtrace to it? I see it from: 128.104.23.100 (kona.doit.wisc.edu). Cheers, Rob
Re: Is it time to abandon bogon prefix filters?
I see a number of hits on those entries, especially on 94/8. and 0/8. You do know that 94/8 has been assigned to the RIPE NCC, right? :-) Cheers, Rob
