Usually on Multi-mode and Low-power single-mode optics the
MaxOutputOpticalPower is less than or equal to the MaxInputOpticalPower, so
it's not necessary to attenuate. The trade-off is optimized optics versus
having an attenuator sticking out the front of the electronics.
Something along the
Rule of thumb is you need Dispersion compensation for any single span over
60Km. 10G/STM64 has a CD Tolerance of 1176 ps/nm, 40G/STM256 has a CD
tolerance of 73.5ps/nm but you don't want your dispersion number to ever go
negative. If it's a single-span only rule of thumb is use the next
Cables should be within 2 feet of the total distance, if you order a stack
several sizes too long then add something like above/below the switch:
http://www.chatsworth.com/products/cable-management/horizontal-cable-management/
Slack should never be stored in the vertical, only in the
The running estimate is about 3 cores per 10GIf to maintain Line-Rate
forwarding. The Enterprise version of Vyatte runs around 1.5-2 cores per 10Gif
(Depends on how the forwarding plane is treating traffic, if you're remarking
or heavy firewall rules the interrupt forwarding cost starts to
What's the application, and what traffic levels do you anticipate. Any special
features like MPLS or MPLS-TE?
-Original Message-
From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Colton Conor
Sent: Tuesday, May 19, 2015 12:23 PM
To: NANOG
Subject: Low Cost 10G Router
What
What are you thinking for connectivity, Ethernet, FiberChannel, Infiniband
... Building *Storage Nodes* or in need of just drive connectivity?
-Original Message-
From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Ray Van Dolson
Sent: Tuesday, May 26, 2015 2:53 PM
To: Graham
A lot of carriers use ISIS in the core so they can make use of the' overload
bit' with a 'set-overload-bit on-startup wait-for-bgp". Keeps them from black
holing Traffic while BGP reconverges., when you have millions of routes to
converge it can take forever. It's also a really handy tool
Mk802 might get you close. Sub $50 plus a couple adapters.
From: NANOG on behalf of Baldur Norddahl
Sent: Thursday, October 15, 2015 9:24:21 PM
To: nanog@nanog.org
Subject: sfp "computer"?
Hi
Does anyone make a SFP with a system on chip "computer" that you can
@op,
Can you expand a little on the end goal, health, noise mitigation, nms
replacement, modem validation?
-Original Message-
From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Blake Hudson
Sent: Tuesday, September 29, 2015 4:44 PM
To: nanog@nanog.org
Subject: Re: SNMP -
Zabbix is probably one of the more robust snmp platform, it's database backed
by either postgres, mysql or oracle and scales pretty big. If this is more
than a one-time event, you'll need some real horsepower and HDD space to keep
all that data. It might be worth writing a custom
How much traffic, and what data-points are you looking to describe? Is the
environment a controlled/sealed lab world (No access to the InterWebs)
-Original Message-
From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Matthias Flittner
Sent: Thursday, October 01, 2015 11:21 AM
To:
I use these
http://www.amazon.com/V-MODA-Faders-Tuned-Earplugs-Electro/dp/B007RRTO2Y/ref=sr_1_9?ie=UTF8=1443014097=8-9=er+20+ear+plugs
in the equipment room, You can still hear, just brings the level down to a
manageable level. Looks like a pair of headphones.
Most SFP/XFP have upc connectors until you get above 5(ish) db of power, then
you'll start to see APC and/or E2000 connections. You'll end up using a
hybrid jumper (APC one end, UPS on the other). If you're looking for quality
jumpers look at Clearfield or Corning. ADC makes tracelite
Give this guy a look, 1RMU form factor, GPS with Rubidium holdover (7 days) if
you need it very inexpensive,
http://www.fibrolan.com/FibroLAN/SendFile.asp?DBID=1=1=3979
or
http://www.fibrolan.com/FibroLAN/SendFile.asp?DBID=1=1=3978 if you
have a SYC-E source
or If you just need highly
Might be worth having a look at the Corning centrix modules. Very high
densities. 72 terminations per u. Front side mpo/mtp connections. Have some
great slack storage and management options.
From: NANOG on behalf of Phil Bedard
Sent: Thursday, May 05, 2016
ATT TP76300, section 4 goes over installation best practices, although it
doesn't cover Engineering guidelines. It's adapted from the Telcordia GR -
1275 standard, little easier to read. Is there a specific question you're
looking to answer?
-Original Message-
From: NANOG
There are a bunch of variables that impact actual power needed vs. road-miles,
number of cross-connects, type of fiber, amount of slack, type of connectors,
frequency, dispersion, etc. The km notation simplifies the naming
convention. As a general rule 40Km budget 20db, 60km budget 24db,
The Nokia is the rebranded Alcatel 7750. The syntax is funky, but it's a great
bras.
From: NANOG on behalf of Tony Wicks
Sent: Saturday, December 03, 2016 2:17:20 PM
To: nanog@nanog.org
Subject: RE: BRAS/BNG Suggestion
I was told by some high up people in
They're probably looking for a G.709 spec service. You still need to know
something about their traffic, is it analog RFOG, or something already framed
like SONET or 1/10/100G. If they can hand you a connection with G.709 styled
framing most modern transport gear can ship it end-to-end,
They're pretty fragile assemblies too, I ruined about 30 of them lacing them
in, they need fish-paper around each cable so you don't crush the conductors
when lacing.
-Original Message-
From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Brant Ian Stevens
Sent: Thursday,
What's the intended use of the Circuit ID? Internal ID, Stickered Customer
CPE; Planning to carry other carriers circuits? With so many virtual
components in circuits now, Where the circuit ID used to have some useful
information, it's been largely reduced to a minimum amount of information
Give this a look; the webpage doesn't do it justice. It Doesn't do
billing/invoicing, but does everything else on your list.
http://www.crestpt.com/fme-platforms.html
-Original Message-
From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of K MEKKAOUI
Sent: Friday, September 01,
In the US certain channels have the *must Carry* designation. Which puts a
retransmitter in a poor negotiating position, essentially the provider can
charge whatever they want.
-Original Message-
From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Jean-Francois Mezei
Sent:
<ID10T!>http://www.crestpt.com/data-center-infrastructure-management-dcim.html
-Original Message-
From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Jameson, Daniel
Sent: Thursday, October 26, 2017 11:32 AM
To: Craig; nanog group
Subject: RE: Physical Layer fiber Software
Give this a look. It can track to the cross-connect level, then provide a
one-line drawing. Application is web driven and expandable. It should be able
to do what you need.
-Original Message-
From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Craig
Sent: Thursday, October 26,
Its not satellite data, it's the exact same data-set that NOAA provides for
ocean levels; The data is from tidal sensors; the data is relayed via
satellite so... technically ;). It's kind of funny the data in the table, vs
the chart-data presented, some .orgs say 80mm, some say 60mm all
13, 2018 4:24 PM
To: Jameson, Daniel
Cc: Eric Kuhnke; nanog@nanog.org list
Subject: Re: optical circulator as a bidirectional one fiber solution
What about 100Ghz ITU spacing on the tx, are the rx optics broad enough to take
the off-band input?
-Ben
On Aug 13, 2018, at 3:19 PM, Jameson, Daniel
You would still need to frequency shift TX and RX. They are travelling
opposite directions on the same piece of glass; as the traffic rate increases
the likelihood of collisions increases and you’ll start to get errors. The
collision would either cancel the ‘bit’ or act like OBI and get
Look at a Hatteras hn400 and lpu You can get about 5mbs/pair using g.shdsl.
pairs can be bonded to add capacity (assuming at least 2 pair for t-1). The
repeaters fit in a standard 248 closure.
From: NANOG on behalf of Baldur Norddahl
Sent: Wednesday,
I’ve used this guy a couple times, Use your favorite switch/POE switch and
viola PON network using switches. Pretty sure it doesn’t work with Zhone… But
Zhone is #88 in my list of PON vendor choices ;)
https://supportforums.adtran.com/docs/DOC-8697
From: NANOG
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