ect: Re: optical gear cooling requirements
On 04/03/2015 21:33, Jay Hennigan wrote:
> We used Livingston Portmaster 3 back in the day. Front to back
> ventilation, ran cool as a cucumber, plug it in and it just worked.
> Awesome gear until Lucent bought the company to kill the product in
5, 2015 10:10 AM
To: Matthew Crocker; Nick Hilliard
Cc: nanog@nanog.org
Subject: RE: optical gear cooling requirements
It is interesting where this conversation turned. But for history's sake...
NAC started on PM2e with Microcom's, and then USR Sportster. I remember USR
sending us PROM chi
It is interesting where this conversation turned. But for history's sake...
NAC started on PM2e with Microcom's, and then USR Sportster. I remember USR
sending us PROM chips to change from 28.8 to 33.6. After that, PM3's. We were
early PM3 users, working with Megazone on an almost continuous bas
>
> On Mar 4, 2015, at 4:54 PM, Nick Hilliard wrote:
>
> On 04/03/2015 21:33, Jay Hennigan wrote:
>> We used Livingston Portmaster 3 back in the day. Front to back
>> ventilation, ran cool as a cucumber, plug it in and it just worked.
>> Awesome gear until Lucent bought the company to kill the p
energis pop the cab doors would not open due to heat warping after loaded with
two tnt max
colin
Sent from my iPhone
> On 4 Mar 2015, at 21:04, "Ricky Beam" wrote:
>
>> On Tue, 03 Mar 2015 20:52:44 -0500, Martin Hannigan
>> wrote:
>> Remember the Ascend MAX TNT and the sideways left-right a
On 04/03/2015 21:33, Jay Hennigan wrote:
> We used Livingston Portmaster 3 back in the day. Front to back
> ventilation, ran cool as a cucumber, plug it in and it just worked.
> Awesome gear until Lucent bought the company to kill the product in
> favor of their Ascend TNT space heaters.
Ascend ki
>> On Tue, 03 Mar 2015 20:52:44 -0500, Martin Hannigan
>>
>> wrote:
>>> Remember the Ascend MAX TNT and the sideways left-right airflow?
>> ...
>>
>> Indeed I do. I see you've heard the story of PSINet melting components
>> as well.
>>
>> We used USR(3Com) TotalControl hardware: vertical venti
I remember that there was an Ascend DSLAM built on the same chassis and it was
collocated by someone into Ameritech central offices. Ameritech shut them all
down saying that there was no way, no how that the device could be NEBS
compliant. I don't know how that fight ever turned out, they were
On 3/4/15 13:04, Ricky Beam wrote:
> On Tue, 03 Mar 2015 20:52:44 -0500, Martin Hannigan
> wrote:
>> Remember the Ascend MAX TNT and the sideways left-right airflow?
> ...
>
> Indeed I do. I see you've heard the story of PSINet melting components
> as well.
>
> We used USR(3Com) TotalControl har
On Tue, 03 Mar 2015 20:52:44 -0500, Martin Hannigan
wrote:
Remember the Ascend MAX TNT and the sideways left-right airflow?
...
Indeed I do. I see you've heard the story of PSINet melting components as
well.
We used USR(3Com) TotalControl hardware: vertical venting. The chimney
effect w
Once upon a time, Martin Hannigan said:
> Remember the Ascend MAX TNT and the sideways left-right airflow? The
> preferred method of deployment was three tall in a two post rack, mid
> mount.
Shoot, only three tall? With the original dual-slot modem cards and
separate HDLC cards, it took three c
Alex,
Remember the Ascend MAX TNT and the sideways left-right airflow? The
preferred method of deployment was three tall in a two post rack, mid
mount. At the end of about the 10th row you could literally cook a steak
and subsequently burn out the gear beyond that point. We fashioned our own
divid
Cisco makes an Air Plenum for front/back air flow.
- M6 chassis:
http://www.cisco.com/c/en/us/td/docs/optical/hardware/15454install/guide/hig15454/hig_15454M6.html#pgfId-863233
- M2 chassis:
http://www.cisco.com/c/en/us/td/docs/optical/hardware/15454install/guide/hig15454/hig_15454M2.html#pgfId-62
On Tue, Mar 3, 2015 at 2:51 PM, Rob Seastrom wrote:
>
> You can always put baffles above and beneath to channel the air
> into/from your hot/cold aisles. Makes it nice to be able to have the
> connectors on whichever side is convenient.
or you know, rotate the equipment in the rack...
Alex Rubenstein writes:
> My question: have the
> optical folks woken up and made things cool front to back, or are
> they still in to the bottom to top world?
Unless something's changed, AT&T NEDS still reads "Systems exhausting
more than 50 W/sq ft must exhaust the air vertically.".
You can
The rock has turned over for a moment and I have crawled out. It is good to see
the sunlight from time to time.
Those who know me know my life has gotten away from networking and that sort of
thing, and I am fully immersed in datacenter design and construction for IT
type loads (blades, compute
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