the spectrum on a long-haul span or something.
--
Brandon Martin
ncing light
levels, etc. as you can usually just throw things straight into a
mux/demux on each end and rely on the power budget of the transceiver
itself, so that makes sense for cheap DCI.
--
Brandon Martin
e major optical transport platform vendors not just
supporting it by heavily pushing it.
I really do hope it becomes a real product that I (as a smaller, local
island operator) can buy, but it just doesn't seem to be there yet at
least in my region.
--
Brandon Martin
s said, if you don't need full routes from them, they have a
VERY open peering policy, and that 100G port might be better suited to a
local IX where you can pick them up along with a bunch of other content
networks.
--
Brandon Martin
t have any imminent shortage
of ASNs and don't need to be particularly stingy about allocating them
as long as a need is met.
--
Brandon Martin
to try and get more entropy.
I hope they hash on L2 MAC, as well, but a pretty common scenario for an
L2 interconnect only has one MAC on each end of the link, so that
doesn't help much. They rallly don't want all your traffic ending
up on one side of a LAG.
--
Brandon Martin
One of the BSDs has had it longer and may be more thoroughly
documented.
--
Brandon Martin
?
--
Brandon Martin
r
"up to" 80km with them really pushing the link budget at that point.
Honestly, I'd be tempted to just suck it up and do a coherent solution,
though I admit it would probably be at least 2x the cost. You can
probably get a 200G carrier, though.
--
Brandon Martin
is quite
a bit different. I also can't imagine they're actually overlaying
AT&T's fiber-to-the-prem network as, to my knowledge, AT&T does not
allow 3rd party access to it in any market.
--
Brandon Martin
on IRR. That is, they are not permissive and will assume
that, if there is an IRR object present for a prefix, that ONLY the
announcements matching that object should be accepted. This can lead to severe
reachability issues if not corrected.
--
Brandon Martin
ical battery life is
important but almost implied these days. Must be able to nicely run Linux
(distro is unimportant).
--
Brandon Martin
nda prefer the IEEE versions, but most of my
vendors concentrate on the ITU/Bellcore stuff in North America, so
GPON/XGS-PON it is.
--
Brandon Martin
tery tech),
folks will get more serious about recycling the electrolyte.
--
Brandon Martin
lement/replace with their own
location data. Devices which have access to Wi-Fi/Bluetooth beacon
location databases can largely do the same. This is almost guaranteed
to be more accurate AND more precise.
--
Brandon Martin
t actually storing state
using techniques similar to syncookies and do so in a compatible manner?
I suspect no since you don't have control over your peers sequence
numbers, but then someone smarter than I came up with syncookies...
--
Brandon Martin
ad you mention.
Several GB of RAM is nothing for a modern server, of course. It sounds
like you'd probably run into other scaling issues before you hit memory
limitations needed to juggle legitimate TCP connection state.
--
Brandon Martin
levant functionality.
I'll note that most mobile phones allow the user to turn off most
(though usually not all) emergency alerts. Non-OEM OS ROMs often go
further.
--
Brandon Martin
streaming device" these days without
that kind of separation of duties internally regardless of what actually runs
underneath the user-visible application. It's not that you couldn't but rather
that you wouldn't.
--
Brandon Martin
On 1/5/21 7:29 PM, Chris Adams wrote:
I don't know if an unsubscribed cell phone gets the emergency alerts (I
know you are supposed to be able to call 911 from any cell phone, even
if not carrying paid service). If so, that'd be another cheap way to
get alerts.
They pretty much universally sho
with various specs AND don't want to or cannot use a
provider's API for that, I'm not sure why you'd want to if you didn't
have to for some crazy reason.
--
Brandon Martin
n performance.
I would not recommend mixing and matching hypervisors (e.g. Xen on KVM
or vice-versa), though. I'm not even sure you can do so meaningfully,
though I bet someone's working on it.
--
Brandon Martin
lots of little wiggles and can be a pain to maintain if you
have visibility into both levels of the equation, but it does seem to
work and is surprisingly performant.
See e.g. https://tips.graphica.com.au/nested-kvm/
--
Brandon Martin
e, anyway.
Not that I'd recommend it.
--
Brandon Martin
the lines of "you operate your network however you want".
Other things would fall under the same purview. For example "alternate root"
DNS hierarchies with extra TLDs or even TLDs used in contrast to ICANN
recommendations would have similar considerations.
--
Brandon Martin
t users in many cases.
--
Brandon Martin
u need.
If you've never used them, you might find the config language a bit
annoying in that it's more Yoda syntax than Cisco, but it's also more
consistent than Cisco (what isn't?), so it's got that going for it.
Documentation is alright. TAC is responsive to inquiries.
--
Brandon Martin
ity arrangements. Thankfully, demand for linear
video is rapidly dropping as people abandon it entirely or switch to
over-the-top alternatives.
My general "favorite" where someone does want to do open access is the
central split open PON model with ample excess fiber on both the
backhaul and customer legs, but it is situational of course.
--
Brandon Martin
ouple hundred GHz or have frequent need
to add/drop it.
--
Brandon Martin
ss to the layer 3
features IIRC.
--
Brandon Martin
ase and is, in some areas at least, REQUIRED to be
itemized to the customer.
If it's not in the contract, I'd try to get out of it.
--
Brandon Martin
o me.
Someone like ICANN or IANA could publish an ROA to a reserved ASN (or to
no ASN - is that possible?) for all unallocated space or something of
the like, I suppose.
--
Brandon Martin
got 100GB games with huge market penetration and each
"patch" is an entirely new copy of said 100GB game, that's a lot of traffic.
--
Brandon Martin
remaining 18 channels for the point-to-point data, so perhaps they
were able to do that since it was a "PRI" product (which may have at least
partially explained the exorbitant cost). We ended up just ordering 3 POTS
lines and for OOB data.
--
Brandon Martin
An RADB entry for IP range 64.25.104.0/22 was recently entered by Crown
Castle Fiber that appears to be in error. Please contact me off-list to
help resolve. Thank you.
--
Brandon Martin
On 2/6/20 8:03 PM, Brandon Martin wrote:
An RADB entry for IP range 64.25.104.0/22 was recently entered by Crown
Castle Fiber that appears to be in error. Please contact me off-list to
help resolve. Thank you.
CCF claims it's been taken care of. Thanks.
--
Brandon Martin
especially for those of us
without local caching.
--
Brandon Martin
fficult, though.
--
Brandon Martin
t still works, and I don't
think it was actually supported by Valve.
Maybe I'm smoking something, here...
--
Brandon Martin
rtificates.
Yeah, these were the "legal" aspects I was referring to above. Not a
technical problem, really. I can't say I'm surprised, and I can think
of some workarounds, but it's definitely a thing to consider.
--
Brandon Martin
those times on
consumer-facing networks and congestion, if it occurs, is unlikely to
generate complaint volume.
--
Brandon Martin
out around 50-75Mbps in practice, even if the
local MSO says you can get more.
The divide keeps getting bigger.
--
Brandon Martin
of the
latter.
* An IPSec SA itself is quite simple. Making it unidirectional is
in-line with that notion and appears to have few consequences.
* An IPSec SPD is also unidirectional (one could argue that this is a
mistake, but see all the above), and an SA follows directly from an SPD.
--
Brandon Martin
more design hold-up time it
seems to have, but of course maintenance varies a lot. Newer
deployments, especially fiber-to-the-curb often have essentially no
hold-up at the local node unless it's back powered from the customer
prem (in which case the customer can keep it up themselves).
--
Brandon Martin
t's
usually "easy" (either for the user, via a management interface, or for
the vendor, via policy template) to fix. Writing an entirely new L4 NAT
helper is a different matter entirely.
IPv6 would of course render this moot, but we all know how well IPv6
traffic gets treated...
--
Brandon Martin
ios IMO.
I'd contribute to the "see really hard if you can just drop more fiber
down the riser" echo chamber.
--
Brandon Martin
es not beyond a few meters and, since SMF can't be gotten rid of
entirely in fixed infrastructure, I'll take the normalization where I
can get it.
--
Brandon Martin
o-point basis are perhaps excepted,
here.
--
Brandon Martin
addresses means you
have a misconfiguration somewhere (presumably unintentional and perhaps
some poorly behaved automatic config on a CPE).
--
Brandon Martin
On 4/13/20 4:31 PM, Randy Bush wrote:
it seems a lot of folk think prepending acrually works.
I mean, there's prepending and then there's prepending 50+ times... Has
the latter EVER been useful in any way, shape, or form?
--
Brandon Martin
my wordpress blog" is an
instant red flag since compromised wordpress instances are one of the
biggest sources of snowshoe hosting in my experience.
--
Brandon Martin
rtunately, it's just what happens when you spread an already limited
resource (transponder bandwidth) out over essentially an entire continent or at
least substantial portions of it. Imagine if you had a cable provider with a
single node for an entire, say, US state.
--
Brandon Martin
e more of a problem. I assume it's TDMA, and the
terminals have imperfect clocks.
--
Brandon Martin
ential activity (and it certainly
is, at least repairs generally are - new construction perhaps could be
argued), then underground utility marking is, too, since it's mandatory
for safely performing underground construction.
--
Brandon Martin
e tracking without also having the CPE
know which ports to use (in which case you might as well use LW4o6 or
MAP), but at least you can get it down to where you really only need to
log (or block and dole out public IPs as needed) port-less protocols.
--
Brandon Martin
an do that, you can get rid of the programmatic state tracking entirely
and just use static translations for TCP and UDP which, while nice, is
impractical. You're about 95% of the way to LW4o6 or MAP at that point.
--
Brandon Martin
has considerable
control over the phone.
FWIW, this software component (the CLAT) can also be on the CPE edge
router which many ISPs either control outright these days or at least
can influence.
--
Brandon Martin
ctly from an authorized Adtran disty you
also get their provisioning and monitoring suite (AOE) "free" as long as
you maintain a support contract (which isn't particularly expensive).
It's kinda blah (and Flash-based, but I'm told that's changing by the
end of the year...) but does work.
--
Brandon Martin
erall, I prefer the CLI.
--
Brandon Martin
very useful, is the devil. Clock stretching is
particularly annoying along with the requisite use of open-drain drivers
to accomplish it.
I was not aware of 10SPE, though...looks very useful (for lots of
purposes). Physical multi-drop on low-cost cabling is quite useful.
--
Brandon Martin
are the ILEC or are a well-established CLEC from a
long time ago. The ILEC mostly gets free reign to set the access costs,
and they set them sufficiently high as to "discourage" competition from
using it where they can get away with it.
--
Brandon Martin
argue that having a misbehaving server listing on 443 (and accepting SNI
for a name that works on plain HTTP, if applicable) at the same domain
as a well-known, public HTTP server, especially from a "security"
company, is a poor idea.
--
Brandon Martin
k to ADSL2+ at ~24Mbps for
long-reach situations.
--
Brandon Martin
available on their "business class" DOCSIS
product and is upcharged even then.
--
Brandon Martin
I'm curious...
Is it part of the DOCSIS spec that the CMTS terminates L3, or can they
bridge to IEEE 802(.3) and delegate that to some other piece of gear?
I'm unfortunately not familiar with the MSO world much at all aside from
a little bit of L1.
--
Brandon Martin
the Wi-Fi
and NAT, and they generally "do the right thing" out of the box for most
folks.
--
Brandon Martin
ivity from any of the cellular telematics providers
at the time. I don't know if this has changed. For our application,
this was fine, but for mixed vendor "IoT" devices, it would probably not
work out well.
--
Brandon Martin
rotection, find more glass. I'm not even
sure how you'd offer a protected "dark fiber" service without
encroaching on the ability of the subscriber to light it to their pleasing.
--
Brandon Martin
ed aside from
applying them to the port itself, and they definitely won't do "BNG"
type functionality with PPPoE or tag-per-customer with shared L2
appearance at least not at any real scale.
--
Brandon Martin
t not configure them if you don't need them.
Are you married to Cisco? The 9200 is not a bad pizza box platform, but
you can definitely get comparable features and bandwidth cheaper (or
more bandwidth for the same price) from other folks.
--
Brandon Martin
integrated into a single box presumably because it's
cheaper for initial deployment than separate boxes for ONU and CPE
router/AP. No indication of those being affected in this notice, at
least that I could find.
--
Brandon Martin
d as well that, even if your hiring
process doesn't demand them, others' will, and many people have a
standard-ish resume with application-specific cover letter.
--
Brandon Martin
ing before the SDN craze...you just have to know what it is.
Reminds me of the early days of ".NET" at Microsoft. Everything was
".NET", and eventually it became an actual thing.
--
Brandon Martin
eally like something
to point them to that will show them it's a "real thing". Getting rid
of state at the CGN as is (or can be, at least) necessary with 464XLAT
seems like a real boon while placing minimal additional burden on the CPE.
--
Brandon Martin
ience but not a lot of real-world
experience: "So, tell me about a particularly dicey interoperability
scenario you encountered while going for your CCIE? What steps did you
take to troubleshoot and either solve or work around it?" or similar.
--
Brandon Martin
preferred CPE vendor is claiming 464XLAT
support now (though I've not tested it), but doesn't appear to even know what
MAP or LW4o6 are and certainly has expressed no plans to support it at least at
the sales engineer questionnaire level.
--
Brandon Martin
single stack access layer at scale, and of course the NAT
is stateful no matter what you do with this technique.
--
Brandon Martin
or exactly the reasons Bill alludes.
For a lot of networks, this can end up being just the OSC, but as
that's often not subject to the full photonic path, I'd likewise advise
against that being the case and to make sure you have at least some
fully "in band" traffic that can be monitored along both legs.
--
Brandon Martin
,
though I haven't verified that it works. They're at least acknowledging
demand for it which is a nice step forward.
--
Brandon Martin
ese modern transition mechanisms) that needs constant
updating and may not be easily available is not ideal.
Heck just having a real, complete list of supported features on the
model support page on their website would be an improvement...
--
Brandon Martin
ing useful will even work.", and that's
not a good way to sell service to the handful of generally outspoken
customers who do want to do things their own way.
--
Brandon Martin
interpreted the RFC! Then I can also have some
specific models to direct people toward along with "Or just look for
'RFC8585' on the box".
But, right now, I am aware of none.
--
Brandon Martin
also a
lot bigger than many deployments are at least when they're new, and
these are questions you have to essentially answer "up front" in many cases.
--
Brandon Martin
I've been trying unsuccessfully for the past couple weeks to get in
touch with the sales folks at CyrusOne. E-mails and voicemails have
gone unreturned.
Anyone have a usable contact there or able to matchmake?
--
Brandon Martin
Can anyone provide a sales contact at AT&T for Ehhernet transport in
Indiana/Illinois/Ohio?
Unicast replies welcome.
--
Brandon Martin
mean
the address space isn't in use.
The DoD uses a fair bit of the address space allocated to them on
networks that are not visible from the public Internet. Whether they
use it efficiently is, perhaps, another matter.
--
Brandon Martin
m link
at 1310nm and without going coherent, they are a potential option. When
I inquired with a manufacturer/rep (what appears to be the only one in
the world), it was almost as expensive as a coherent transponder on both
ends.
--
Brandon Martin
On 1/12/22 9:35 PM, Jay Hennigan wrote:
From what I've seen on the market, home router or "residential gateway" devices with built-in battery backup typically only provide backup for FXS style analog POTS services, not for data, wireless, etc.
This was definitely the case for the Verizon FiOS I
On 1/12/22 4:15 PM, Josh Luthman wrote:
I would have to imagine any QOS/traffic shaping is done in the OMCI and
hence would probably be in the GPON spec, g.984. I would look there.
Just guessing it would hold true with XG/s/PON, NGPON, etc.
The way at least my gear (Adtran) works is that you
The Netgear GS108T is my typical go-to "not a dumb switch". 8 ports for
about $80.
Make sure you get the v3 if you want most of the modern IPv6 L2 features
(you also get some very limited L3 capabilities). The v2 lacks most of
them and is still readily available on the market.
quot; or not, apparently does need to be
upgraded to prevent detrimental interference to an important flight
safety and operations facility. A pause in deployment seems reasonable
in that light, though it would have been nice if folks could have gotten
this resolved sooner.
--
Brandon Martin
cast space) low- and mid-band frequencies for wider
area coverage at reduced speeds. Interference considerations,
especially high above the horizon (planes...) would be present for
potentially dozens of miles away.
--
Brandon Martin
cared. Now, it's a big deal to
try to replace them all, and it's made even worse by how difficult
changing anything in aviation is and how comparatively old and hence
simple (perhaps too simple) the radio altimeter RF physical layer
apparently is.
--
Brandon Martin
he other direction) is not sufficient to ensure
proper receiver isolation from unwanted signals.
--
Brandon Martin
t only
moderate power and for essentially infinite duration in the scope of a
radar receiver. It would by no means be an ideal means to disable such
a system, but it does represent RF energy that the receiver needs to
contend with.
--
Brandon Martin
allocation does. Those users have been around for 35+ years
and are widespread and unlicensed (as they are receive only).
--
Brandon Martin
mer" within your
RF receive mask, which is what I was getting at.
In this case, however, the system is basically a dumb radar, apparently,
so none of that is going to be present. The fact that a signal 250MHz
out of band can present meaningful issues is troubling nonetheless.
--
Brandon Martin
users to migrate to semi-modern best practices in order to more
efficiently use their allocation. They've done this before with e.g.
reducing bandwidth limits on FM voice in the VHF/UHF "business bands".
--
Brandon Martin
tfolio at this
point.
The XGS-PON ONTs are still about double the price of the GPON ONTs last
I checked.
--
Brandon Martin
On 7/5/22 18:27, Glenn Kelley wrote:
I fully expect this to come down to someone needing to be an "engineer."
The term "Professional Engineer" is a protected term in all 50 US states
to my knowledge. It requires the qualifications and licensure you'd
expect with the typical path being ABET e
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