Fibre circulators? - NZNOG - lists.nznog.org

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Fibre circulators?

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Sam Russell

15 Jan 2014 15 Jan '14

10:16 p.m.

Hi guys, Does anyone recommend a supplier for fibre circulators, preferably with LC connectors? I'd be keen to hear anyone's experiences/horror stories with them if you're willing to volunteer them. Cheers Sam

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Mike Jager

15 Jan 15 Jan

10:54 p.m.

On 16/01/2014, at 11:16, Sam Russell wrote:

Does anyone recommend a supplier for fibre circulators, preferably with LC connectors? I'd be keen to hear anyone's experiences/horror stories with them if you're willing to volunteer them.

At first glance, they seem like a nifty idea. In my experience they end up being a lot more hassle than they’re worth (finding somewhere to locate them in a rack, especially when that rack isn’t yours; optics that launch a little bit too bright or receive a little bit too dim resulting in ports standing up to themselves when the line side of the circulator is disconnected), especially with availability of single fibre optics up to 10Gbps. Cheers -Mike

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Jonathan Brewer

11:07 p.m.

1.) Shenzhen Gigalight: http://www.gigalight.com.cn/ 2.) Always buy cassette based packages that slot into 19" rack frames 3.) Always use LCA connectors and attenuators 4.) Always have spare patch leads on hand 5.) TEST EVERYTHING before you deploy it, including your spare patch leads and attenuators, to make sure they behave as expected On Thu, Jan 16, 2014 at 11:54 AM, Mike Jager wrote:

On 16/01/2014, at 11:16, Sam Russell wrote:

...
Does anyone recommend a supplier for fibre circulators, preferably with LC connectors? I'd be keen to hear anyone's experiences/horror stories with them if you're willing to volunteer them.

At first glance, they seem like a nifty idea.

In my experience they end up being a lot more hassle than they’re worth (finding somewhere to locate them in a rack, especially when that rack isn’t yours; optics that launch a little bit too bright or receive a little bit too dim resulting in ports standing up to themselves when the line side of the circulator is disconnected), especially with availability of single fibre optics up to 10Gbps.

Cheers -Mike _______________________________________________ NZNOG mailing list NZNOG(a)list.waikato.ac.nz http://list.waikato.ac.nz/mailman/listinfo/nznog

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Dave Mill

11:09 p.m.

On Thu, Jan 16, 2014 at 11:54 AM, Mike Jager wrote:

On 16/01/2014, at 11:16, Sam Russell wrote:

...
Does anyone recommend a supplier for fibre circulators, preferably with LC connectors? I'd be keen to hear anyone's experiences/horror stories with them if you're willing to volunteer them.

At first glance, they seem like a nifty idea.

In my experience they end up being a lot more hassle than they’re worth (finding somewhere to locate them in a rack, especially when that rack isn’t yours; optics that launch a little bit too bright or receive a little bit too dim resulting in ports standing up to themselves when the line side of the circulator is disconnected), especially with availability of single fibre optics up to 10Gbps.

I'll 2nd what Mike says here. When they work they work really well. The problem is that when things get slightly strange you can still have a port being up but you then have what you're advertising out being reflected back. When every MAC you send out a port is advertised back at that port then "interesting things happen". Dave

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Nathan Ward

16 Jan 16 Jan

12:22 a.m.

Does that still happen if you use angled connectors? It shouldn’t.. On 16/01/2014, at 12:09 pm, Dave Mill wrote:

On Thu, Jan 16, 2014 at 11:54 AM, Mike Jager wrote: On 16/01/2014, at 11:16, Sam Russell wrote:

...
Does anyone recommend a supplier for fibre circulators, preferably with LC connectors? I'd be keen to hear anyone's experiences/horror stories with them if you're willing to volunteer them.

At first glance, they seem like a nifty idea.

In my experience they end up being a lot more hassle than they’re worth (finding somewhere to locate them in a rack, especially when that rack isn’t yours; optics that launch a little bit too bright or receive a little bit too dim resulting in ports standing up to themselves when the line side of the circulator is disconnected), especially with availability of single fibre optics up to 10Gbps.

I'll 2nd what Mike says here. When they work they work really well. The problem is that when things get slightly strange you can still have a port being up but you then have what you're advertising out being reflected back. When every MAC you send out a port is advertised back at that port then "interesting things happen".

Dave

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Dave Mill

12:57 a.m.

In this case it was LCA on all of the circulators and duplex LC on the active equipment. This was a pretty special case what we were doing here. But just figured I'd chime in that my experience with circulators hasn't been great so far and I seem to have similar issues to Mike. Dave On Thu, Jan 16, 2014 at 1:22 PM, Nathan Ward wrote:

Does that still happen if you use angled connectors? It shouldn’t..

On 16/01/2014, at 12:09 pm, Dave Mill wrote:

On Thu, Jan 16, 2014 at 11:54 AM, Mike Jager wrote:

...
On 16/01/2014, at 11:16, Sam Russell wrote:

...
Does anyone recommend a supplier for fibre circulators, preferably with LC connectors? I'd be keen to hear anyone's experiences/horror stories with them if you're willing to volunteer them.

At first glance, they seem like a nifty idea.

In my experience they end up being a lot more hassle than they’re worth (finding somewhere to locate them in a rack, especially when that rack isn’t yours; optics that launch a little bit too bright or receive a little bit too dim resulting in ports standing up to themselves when the line side of the circulator is disconnected), especially with availability of single fibre optics up to 10Gbps.

I'll 2nd what Mike says here. When they work they work really well. The problem is that when things get slightly strange you can still have a port being up but you then have what you're advertising out being reflected back. When every MAC you send out a port is advertised back at that port then "interesting things happen".

Dave

_______________________________________________ NZNOG mailing list NZNOG(a)list.waikato.ac.nz http://list.waikato.ac.nz/mailman/listinfo/nznog

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Sam Russell

4:15 a.m.

Thanks to everyone who replied. The Hoff has put me in touch with one of the guys at gigalight, and I'm going to try and get some kit in to play with before subjecting customers to it. I'll catch you in a couple of weeks & share a beer and hopefully have something to show for it by then. http://i.imgur.com/WeVJDGT.jpg On Thu, Jan 16, 2014 at 1:57 PM, Dave Mill wrote:

In this case it was LCA on all of the circulators and duplex LC on the active equipment.

This was a pretty special case what we were doing here. But just figured I'd chime in that my experience with circulators hasn't been great so far and I seem to have similar issues to Mike.

Dave

On Thu, Jan 16, 2014 at 1:22 PM, Nathan Ward wrote:

...
Does that still happen if you use angled connectors? It shouldn’t..

On 16/01/2014, at 12:09 pm, Dave Mill wrote:

On Thu, Jan 16, 2014 at 11:54 AM, Mike Jager wrote:

...
On 16/01/2014, at 11:16, Sam Russell wrote:

...
Does anyone recommend a supplier for fibre circulators, preferably with LC connectors? I'd be keen to hear anyone's experiences/horror stories with them if you're willing to volunteer them.

At first glance, they seem like a nifty idea.

In my experience they end up being a lot more hassle than they’re worth (finding somewhere to locate them in a rack, especially when that rack isn’t yours; optics that launch a little bit too bright or receive a little bit too dim resulting in ports standing up to themselves when the line side of the circulator is disconnected), especially with availability of single fibre optics up to 10Gbps.

I'll 2nd what Mike says here. When they work they work really well. The problem is that when things get slightly strange you can still have a port being up but you then have what you're advertising out being reflected back. When every MAC you send out a port is advertised back at that port then "interesting things happen".

Dave

_______________________________________________ NZNOG mailing list NZNOG(a)list.waikato.ac.nz http://list.waikato.ac.nz/mailman/listinfo/nznog

_______________________________________________ NZNOG mailing list NZNOG(a)list.waikato.ac.nz http://list.waikato.ac.nz/mailman/listinfo/nznog

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Daniel Griggs

24 Jan 24 Jan

2:36 a.m.

I second what Mike and Dave say here. The _seem_ like a good idea, but they are not something you want to deal with at 3am. Sure you can use angled connectors on the circulators, but it’s unlikely you’ll find active equipment that has angled connectors and most fibre providers will use un-angled connectors. Only the smart ones use angled connectors on on long distance fibre ;) On 16/01/2014, at 9:22 am, Nathan Ward wrote:

Does that still happen if you use angled connectors? It shouldn’t..

On 16/01/2014, at 12:09 pm, Dave Mill wrote:

...
On Thu, Jan 16, 2014 at 11:54 AM, Mike Jager wrote: On 16/01/2014, at 11:16, Sam Russell wrote:

...
Does anyone recommend a supplier for fibre circulators, preferably with LC connectors? I'd be keen to hear anyone's experiences/horror stories with them if you're willing to volunteer them.

At first glance, they seem like a nifty idea.

In my experience they end up being a lot more hassle than they’re worth (finding somewhere to locate them in a rack, especially when that rack isn’t yours; optics that launch a little bit too bright or receive a little bit too dim resulting in ports standing up to themselves when the line side of the circulator is disconnected), especially with availability of single fibre optics up to 10Gbps.

I'll 2nd what Mike says here. When they work they work really well. The problem is that when things get slightly strange you can still have a port being up but you then have what you're advertising out being reflected back. When every MAC you send out a port is advertised back at that port then "interesting things happen".

Dave

_______________________________________________ NZNOG mailing list NZNOG(a)list.waikato.ac.nz http://list.waikato.ac.nz/mailman/listinfo/nznog

_______________________________________________ NZNOG mailing list NZNOG(a)list.waikato.ac.nz http://list.waikato.ac.nz/mailman/listinfo/nznog

-- Daniel

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participants (6)

Daniel Griggs
Dave Mill
Jonathan Brewer
Mike Jager
Nathan Ward
Sam Russell