[j-nsp] RE : ALS on Juniper

david.roy at orange-ftgroup.com david.roy at orange-ftgroup.com
Tue Jun 28 12:39:31 EDT 2011


Hi 

thank you.

What I try to do is to simulate an unidirectionnal link failure (for OAM LFM tests). So I'm not sure that there is a way to disable ALS. 

Regards
David


________________________________________
De : Ben Dale [bdale at comlinx.com.au]
Date d'envoi : mardi 28 juin 2011 12:46
À : ROY David DTF/DERX
Cc : juniper-nsp at puck.nether.net
Objet : Re: [j-nsp] ALS on Juniper

On 28/06/2011, at 7:24 PM, <david.roy at orange-ftgroup.com> <david.roy at orange-ftgroup.com> wrote:
> Do you know if Junos provides ALS (Automatic Laser Shutdown) configuration ? Like Cisco (http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap11.pdf)

I can only vouch for the EX platform, but in some testing I did a while back it would appear that yanking a single core from an SFP takes the transmitter down on both sides.  A log message is also generated that lets you know that RX has fallen below a certain threshold and the transmitter is being shut down.  No configuration is required to make this happen.

I suspect this would be reliant on you using Juniper "certified" optics though as you'd need digital diagnostics.

Ben
********************************************************************************
IMPORTANT.Les informations contenues dans ce message electronique y compris les fichiers attaches sont strictement confidentielles
et peuvent etre protegees par la loi.
Ce message electronique est destine exclusivement au(x) destinataire(s) mentionne(s) ci-dessus.
Si vous avez recu ce message par erreur ou s il ne vous est pas destine, veuillez immediatement le signaler  a l expediteur et effacer ce message 
et tous les fichiers eventuellement attaches.
Toute lecture, exploitation ou transmission des informations contenues dans ce message est interdite.
Tout message electronique est susceptible d alteration.
A ce titre, le Groupe France Telecom decline toute responsabilite notamment s il a ete altere, deforme ou falsifie.
De meme, il appartient au destinataire de s assurer de l absence de tout virus.

IMPORTANT.This e-mail message and any attachments are strictly confidential and may be protected by law. This message is
intended only for the named recipient(s) above.
If you have received this message in error, or are not the named recipient(s), please immediately notify the sender and delete this e-mail message.
Any unauthorized view, usage or disclosure ofthis message is prohibited.
Since e-mail messages may not be reliable, France Telecom Group shall not be liable for any message if modified, changed or falsified.
Additionally the recipient should ensure they are actually virus free.
********************************************************************************




More information about the juniper-nsp mailing list