You need to program the passive dac to look like an active dac. Brocade wants
active.
Ping me if you want help.
Eric
Sent from my iPhone
> On Mar 21, 2018, at 3:36 PM, Mike Hammett wrote:
>
> No one knows of such a command and apparently the VDX line is finicky with
> what passive DACs the
Yes, and they (old hardware plateformes) support only passive DAC. I remember
being bitten by this at the time.
Tangent : hum 🤔... doesn’t seem normal to me. Maybe a bug ?!?
Best regards.
> Le 21 mars 2018 à 23:36, Mike Hammett a écrit :
>
> No one knows of such a command and apparently the
No one knows of such a command and apparently the VDX line is finicky with what
passive DACs they'll work with. I just ordered more of the ones I know that
work.
Tangent: Is it normal for these guys to still transmit light even when the
interface is shut?
-
Mike Hammett
Intelligent
Hi,
We have been (and still) using all kinds of brocade hardware, including VDX
from early NOS2.x
AFAIK, I couldn’t find an equivalent command to « unsupported transceiver ». So
you will always get a syslog message, but usually it won’t stop port from
coming up.
Regarding to optical transceiv
More offlist messages I figured I'd address in one e-mail.
VDX-6720 4.1.3b
These are the ones that I know work:
https://www.fs.com/products/36700.html
https://www.fs.com/products/40120.html
https://www.fs.com/products/36706.html
-
Mike Hammett
Intelligent Computing Solutions
htt
:: For those running BFD on your land-based point-to-point links,
:: I’m interested in hearing about what factors you consider when
:: deciding how to configure your timers and multiplier.
It has been a while since I used BFD, but I remember trying to get
it as close to what I wanted and then
I've had a few offlist responses looking for the same or about coded optics.
I've been able to use Brocade -coded optics from FiberStore, but a DAC which
should be universal (and passes the muster for the Intel NICs it's plugged
into) returns, " 2018/03/21-15:14:00, [NSM-1028], 2679, DCE, ERROR
Anyone know if there is a command in Brocade NOS (4.x) to force the use of an
unsupported transceiver? If so, what is it?
-
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
Midwest-IX
http://www.midwest-ix.com
On 2018-03-21 17:24, Job Snijders wrote:
> Silly question perhaps, but why would you do BFD on dark fiber?
Simple paranoia perhaps? Just because you only have layer 1 equipment
(transponders) right now, doesn't guarantee that you won't need to stick
in a layer 2 switch in the path tomorrow, and
They were ME3600s. AFAIR it was two of these things in a lab connected back to
back with two links between them, one metric higher than the other. Some sort
of traffic generator running between the two that would generate fixed size UDP
frames at some tens of milliseconds interval, yanking the
Can someone from HE comment on how they are doing their filtering? We often see
our routes leaked by them or their customers and it’s quite the problem and
significantly contributes to the pollution in the routing table.
Often friends and smaller providers come to me for help and the lack of
f
Which platform ? What context ?
Best regards.
> Le 21 mars 2018 à 18:10, Jason Lixfeld a écrit :
>
> A few years ago I did some testing and found that the time between the
> transceiver detecting LOS and the routing protocol (ISIS in this case) being
> informed that the link was down (trigg
A few years ago I did some testing and found that the time between the
transceiver detecting LOS and the routing protocol (ISIS in this case) being
informed that the link was down (triggering the recalculation) took longer than
it took BFD to signal ISIS to recalculate.
> On Mar 21, 2018, at 12
LaBrea Tarpit http://labrea.sourceforge.net/ can do this as well, though
perhaps only for IPv4. Basically it looks for unanswered ARP requests and
answers them. What it does with the ensuing session data is configurable.
---
The fact that there's a Highway to Hell but only a Stairway to Heave
Right, BFD on a dark fiber link (should) be immediately detected and the
detecting end should send a cease/stop/whatever message to the remote peer
to drop the neighbor relationship.
BFD really comes into it's own in a derived circuit (such as metro-E or
other type setup) where you can have an ind
Correct, Luke.
Best regards,
Alex
-Original Message-
From: Luke Guillory (External) [mailto:lguill...@reservetele.com]
Sent: Wednesday, March 21, 2018 12:37 PM
To: Alex Lembesis; Job Snijders (External); Youssef Bengelloun-Zahr
Cc: NANOG
Subject: RE: How are you configuring BFD timers
He's asking because if it was dark the interface would go down when the link
was lost and the router would pull routes. But PA to FL would lead me to
believe it'll be a wave from some type of DWDM gear which brings us to BFD.
Luke Guillory
Vice President – Technology and Innovation
Tel:
Wouldn't any tangible problem on a dark-fiber link result in an
interface shutdown, ostensibly creating the trigger one would need to
begin re-convergence?
On 3/21/18 11:31 AM, Alex Lembesis wrote:
To speed up BGP routing convergence. The (2x) dark fiber links from PA to FL
are being used a
To speed up BGP routing convergence. The (2x) dark fiber links from PA to FL
are being used as Layer3 datacenter interconnects, where each datacenter has
its own AS. The DF is also carrying FCIP traffic, so we need failover to be as
fast as possible.
Best regards,
Alex
-Original M
Silly question perhaps, but why would you do BFD on dark fiber?
Kind regards,
Job
Is there anyone on the list from TelX with visibility into the Atlanta TIE ?
Using 200 ms / 200 ms / x3 on either metro dark fiber or longhaul waves
(Paris / Frankfurt / Amsterdam) successfully.
Best regards.
Y.
2018-03-21 16:11 GMT+01:00 Alex Lembesis :
> Using 250ms x 3 on fiber connecting Pennsylvania to Florida...
>
> Best regards,
>
>
>
> Alex
>
> -Original M
Using 250ms x 3 on fiber connecting Pennsylvania to Florida...
Best regards,
Alex
-Original Message-
From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Jason Lixfeld
(External)
Sent: Wednesday, March 21, 2018 9:10 AM
To: NANOG
Subject: How are you configuring BFD timers?
Hey,
In practice, the vendor's recommendations regarding Routing Engine HA provide a
lower bound. I'm just starting out with 1000ms x 3 multiplier, but my network
is not national or global. I believe I could go as low as 500ms to keep HA
happy.
On Wed, Mar 21, 2018 at 09:10:28AM -0400, Jason Lixfe
Hey,
For those running BFD on your land-based point-to-point links, I’m interested
in hearing about what factors you consider when deciding how to configure your
timers and multiplier.
On paper, BFD between two devices over a local or metro dark fibre or wave
seems pretty trivial: Assuming yo
NANOGers -
An important reminder: this Global IPv6 deployment survey is closing at the end
of March.
If you have a moment, please take the time to complete this survey so that the
RIRs may collectively have a better understanding of the status of IPv6
deployment in the Internet.
Thanks!
/John
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