> On Feb 26, 2020, at 12:42 PM, Randy Bush wrote:
>
> since we're at this layer, should i worry about going 3m with dacs at
> low speed, i.e. 10g? may need to do runs to neighbor rack.
No.
We even do this for 100G.
- Jared
> Warren Kumari
> Sent: Wednesday, February 26, 2020 4:31 PM
>
> On Wed, Feb 26, 2020 at 11:20 AM Coy Hile wrote:
> >
> > On 2020-02-26 11:14, Randy Bush wrote:
> > >> We use plenty of multi-mode, but only in the data centre, between
> > >> our own kit, for racks within the same cage.
> > >
> >
Randy Bush wrote on 26/02/2020 16:14:
We use plenty of multi-mode, but only in the data centre, between our
own kit, for racks within the same cage.
so you have to stock both single and multi? hmmm
in-cabinet multimode can make sense, as long as you keep the stock types
contained, i.e.
Randy Bush writes:
> since we're at this layer, should i worry about going 3m with dacs at
> low speed, i.e. 10g? may need to do runs to neighbor rack.
No, 3m is totally fine for passive DAC, never had any issues with those.
(5m should also be fine, we just have less experience with that because
nah. We do up to 10m on knockoff 40G DACs in production. It's no problem.
On Wed, Feb 26, 2020 at 11:44 AM Randy Bush wrote:
> since we're at this layer, should i worry about going 3m with dacs at
> low speed, i.e. 10g? may need to do runs to neighbor rack.
>
> randy
>
Once upon a time, Coy Hile said:
> I'd expect that from the ToR -> Servers would be MMF, but that other
> infrastructure cabling would be SMF.
> Even using aftermarket optics, putting single-mode transceivers in
> every server and access port would quickly become cost-prohibitive,
> would it not?
since we're at this layer, should i worry about going 3m with dacs at
low speed, i.e. 10g? may need to do runs to neighbor rack.
randy
On 26/Feb/20 19:09, Mike Hammett wrote:
> When you're buying thousands or tens of thousands, you're also not
> shopping off of the FiberStore web site.
Not necessarily :-).
Mark.
On 26/Feb/20 18:56, Brandon Martin wrote:
> On the fixed side, I have enough trouble convincing folks that APC
> and UPC plugs are different
On that note, I migrated our network from DC to AC in 2007, and that was
a major philosophical drama.
At current job, all Transport kit runs DC for
Tinka"
To: nanog@nanog.org
Sent: Wednesday, February 26, 2020 11:05:46 AM
Subject: Re: Hi-Rise Building Fiber Suggestions
On 26/Feb/20 18:33, Mike Hammett wrote:
1G
---
MM $6/ea
SM $7/ea
10G
---
MM $18/ea
SM $24/ea
DAC $9.50-$18/pair (length dependent)
25G
---
MM $39/
On 26/Feb/20 18:33, Mike Hammett wrote:
> 1G
> ---
> MM $6/ea
> SM $7/ea
>
> 10G
> ---
> MM $18/ea
> SM $24/ea
> DAC $9.50-$18/pair (length dependent)
>
> 25G
> ---
> MM $39/ea
> SM $59/ea
> DAC $23-$51/pair (length dependent)
>
>
>
> Not a significant price difference from SM to MM, but DAC is
On 26/Feb/20 18:30, Warren Kumari wrote:
> Of course, sometimes you don't have the option of SM - you are
> connecting some someone else than they only do MM, or you are
> connecting to a piece of kit which doesn't have replaceable optics, or
> you have legacy cabling which is MM, or... but,
On 2/26/20 11:43 AM, Filip Hruska wrote:
Some NICs don't support SM optics, so even if you would like to run SM
everywhere, it's not necessarily possible depending on the equipment.
For example, I had issues with some SolarFlare cards which happily take
10G-SR MM but won't take 10G-LR SM.
Is
> On 26 Feb 2020, at 11:33, Mark Tinka wrote:
>
> I'm certain someone from Flex has NANOG chatter on "Promiscuous Mode" :-).
Yes :)
f
It really depends on what you're interconnecting.
Some NICs don't support SM optics, so even if you would like to run SM
everywhere, it's not necessarily possible depending on the equipment.
For example, I had issues with some SolarFlare cards which happily take 10G-SR
MM but won't take 10G-LR
Computing Solutions
Midwest Internet Exchange
The Brothers WISP
- Original Message -
From: "Coy Hile"
To: "Randy Bush"
Cc: nanog@nanog.org
Sent: Wednesday, February 26, 2020 10:19:37 AM
Subject: Re: Hi-Rise Building Fiber Suggestions
On 2020-02-26 11:14, Randy Bu
On 26/Feb/20 18:30, Randy Bush wrote:
>
> i wish flexoptix did 400g DACs. we have two boxes from the same ODM
> with interfaces whose sole pupose is to interconnect the two boxes,
> and the optics are coded for different vendors. unbelievable.
I'm certain someone from Flex has NANOG chatter
On 26/Feb/20 18:19, Coy Hile wrote:
>
> I'd expect that from the ToR -> Servers would be MMF, but that other
> infrastructure cabling would be SMF.
I've been designing in-data-centre cabling between routers with MM since
2007. Back then, there was a real material saving in doing that,
On Wed, Feb 26, 2020 at 11:20 AM Coy Hile wrote:
>
> On 2020-02-26 11:14, Randy Bush wrote:
> >> We use plenty of multi-mode, but only in the data centre, between our
> >> own kit, for racks within the same cage.
> >
> > so you have to stock both single and multi? hmmm
> >
> > randy
>
> I'd
> What is more important to us is that the optics are multi-rate. And
> even more important now, is that our 3rd party optics suppliers can
> allow us to code and re-code optics to our heart's content.
i wish flexoptix did 400g DACs. we have two boxes from the same ODM
with interfaces whose sole
On 2/25/20 10:48 PM, Abhi Devireddy wrote:
L2 rings IMHO seem pretty brittle. I know there are L2 ring products
like Juniper BTI, which use ERPS and not strictly STP/RSTP to move
blocking ports, and those seem a little better although it's mostly
statically configured.
For a strict ring
On 26/Feb/20 18:14, Randy Bush wrote:
> so you have to stock both single and multi? hmmm
Optics are dirt cheap. We don't pay the equipment vendors for their
flavour :-).
That said, stocking MM and SM is cheaper than stocking just SM, because
we can reliably predict when/where we shall use
On 2020-02-26 11:14, Randy Bush wrote:
We use plenty of multi-mode, but only in the data centre, between our
own kit, for racks within the same cage.
so you have to stock both single and multi? hmmm
randy
I'd expect that from the ToR -> Servers would be MMF, but that other
infrastructure
At the very minimum use bidirectional modules so you will have four
channels. That way you would only have 15 switches on a chain. Also be sure
to configured your STP weight so the cut will be in the middle. So one
fiber will normally be transmitting to 7 switches, the other fiber to the
other 8
> We use plenty of multi-mode, but only in the data centre, between our
> own kit, for racks within the same cage.
so you have to stock both single and multi? hmmm
randy
On 26/Feb/20 17:43, adamv0...@netconsultings.com wrote:
> On that note would you gents recommend single-mode or multimode fiber for
> buildings?
Single-mode, for sure. More predictable characteristics when you climb
up the capacity scale, e.g., 10Gbps to 40Gbps to 100Gbps.
We use plenty of
On Wed, Feb 26, 2020 at 4:55 PM wrote:
> On that note would you gents recommend single-mode or multimode fiber for
> buildings?
>
> adam
>
>
Single mode fiber for all new installs. There are only few uses cases where
multimode still saves a little money (100G optics) but otherwise there are
only
bruary 26, 2020 9:43:00 AM
Subject: RE: Hi-Rise Building Fiber Suggestions
> Joel Jaeggli
> Sent: Wednesday, February 26, 2020 4:46 AM
>
> > There are two fiber pairs running up the building riser. I need to put a
> > POE
> switch on each floor using this fiber.
&
On 26/Feb/20 04:32, Norman Jester wrote:
> The idea is to cut the fiber at each floor and insert a switch and daisy
> chain the switches together using one pair, and using the other pair as the
> failover side of the ring going back to the source so if one device fails it
> doesn’t take the
> Joel Jaeggli
> Sent: Wednesday, February 26, 2020 4:46 AM
>
> > There are two fiber pairs running up the building riser. I need to put a POE
> switch on each floor using this fiber.
>
> You didn’t specify if the existing fiber is single or multi-mode however
>
On that note would you gents
> Sent: Wednesday, February 26, 2020 4:46 AM
> To: Norman Jester
>
> Sent from my iPhone
>
> > On Feb 25, 2020, at 18:34, Norman Jester wrote:
> >
> > I’m in the process of choosing hardware for a 30 story building. If
> > anyone has experience with this I’d appreciate any tips.
> >
> > There
Hey Norman,
I'm in the middle of a construction project where we've got 50 data rooms in
one building.
I've researched a lot of different options and we ended up with just home runs.
A couple of items to consider and think about:
1. Have you looked into the incremental additional costs
XSdfxQv7SpoRQYNyLwntZg>
> ----------
> *From: *"Ryan Hamel"
> *To: *"Bradley Burch"
> *Cc: *nanog@nanog.org
> *Sent: *Tuesday, February 25, 2020 10:45:05 PM
> *Subject: *Re: Hi-Rise Building Fiber Suggestions
>
> How would that wo
nt Computing Solutions
>
> Midwest Internet Exchange
>
> The Brothers WISP
>
> - Original Message -
>
> From: "Ryan Hamel"
> To: "Bradley Burch"
> Cc: nanog@nanog.org
> Sent: Tuesday, February 25, 2020 10:45:05 PM
> Subject: R
Hamel"
To: "Bradley Burch"
Cc: nanog@nanog.org
Sent: Tuesday, February 25, 2020 10:45:05 PM
Subject: Re: Hi-Rise Building Fiber Suggestions
How would that work to solve Norman's problem? That sounds like a lot of money
spending, and setup time, for nothing.
Ryan
On Feb 25 2020, at 8:
> On 2/25/20 6:32 PM, Norman Jester wrote:
> I’m in the process of choosing hardware
> for a 30 story building. If anyone has experience with this I’d appreciate
> any tips.
>
> There are two fiber pairs running up the building riser. I need to put a POE
> switch on each floor using this fiber.
I do not recommend doing that, it's 30 members in a single stack. Mine was only
two, directly connected to each other.
Treat your control plane like your L2, don't extend it farther than necessary.
Ryan
On Feb 25 2020, at 9:00 pm, Tim Požár wrote:
>
> Also, Juniper switches will stack over
Also, Juniper switches will stack over fiber. I have deployed Virtual
Chassis over multiple IDFs. The VC ports can be (and highly suggested)
to be in a ring.
https://www.juniper.net/documentation/en_US/junos/topics/concept/virtual-chassis-ex4200-overview.html
Sent from my iPhone
> On Feb 25, 2020, at 18:34, Norman Jester wrote:
>
> I’m in the process of choosing hardware
> for a 30 story building. If anyone has experience with this I’d appreciate
> any tips.
>
> There are two fiber pairs running up the building riser. I need to put a POE
>
How would that work to solve Norman's problem? That sounds like a lot of money
spending, and setup time, for nothing.
Ryan
On Feb 25 2020, at 8:21 pm, Bradley Burch wrote:
>
> Should consider DWDM or GPON and in those look at passive optical
> technologies that can benefit the project.
> > On
If you are limited on fiber runs, how about using 10Gb BiDi optics to
limit a ring to say two sets of 15 switches.
Tim
On 2/25/20 8:21 PM, Bradley Burch wrote:
> Should consider DWDM or GPON and in those look at passive optical
> technologies that can benefit the project.
>
>> On Feb 25, 2020,
I'd say a pair of Juniper switches on each floor, with their virtual-chassis
capability. Terminate the top/bottom floor of fiber 1 into switch 1, and the
other into switch two. Create an LACP bond between each floors switches, tag
the necessary VLANs, and put the VLAN SVIs onto the first pair
Should consider DWDM or GPON and in those look at passive optical technologies
that can benefit the project.
> On Feb 25, 2020, at 9:33 PM, Norman Jester wrote:
>
> I’m in the process of choosing hardware
> for a 30 story building. If anyone has experience with this I’d appreciate
> any
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