Mailing List Archive: [Fwd: Re: Undersea cable cut?]

[Fwd: Re: Undersea cable cut?]

Apr 14, 2010, 1:48 PM

Post #1 of 4 (159 views)

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Does anyone across the pond have any further insight into this cut?

Although SEA-ME-WE 3 and 4 are suppose to provide redundancy for
eachother, not sure what impact has SMW4 segment caused, maybe latency?

Any feedback will be appreciated.

regards,
/virendra

- -------- Original Message --------
Subject: Re: Undersea cable cut?
Date: Wed, 14 Apr 2010 14:18:49 -0400
From: Chris McDonald <copraphage@gmail.com>
To: St. Onge,Adam <ASTONGE at travelers.com>
CC: nanog at nanog.org <nanog at nanog.org>
References:
<768FB653686AE54A9B4FB9A1503F03F51C9BFF502A at TENK7MVB.prod.travp.net>

There's a cut in SWM4

*SMW4 Segment 4.1 cable fault*

Cable shunt fault developed on SMW4 segment 4.1 (Egypt / Alexandria ?
Branching Unit #4A onward France / Marseilles) at 07:15GMT on 14-Apr. 2010.
However the shunt fault has further deteriorated and the cable segment was
down at 10:03GMT. Only four unprotected Singapore ? London / Frankfurt
STM-4c IP trunks were being affected.

SMW4 NOC updated that there is a shunt fault in segment 4.1 between Egypt /
Alexandria and France / Marseilles with cable fault on Fiber Pair #2 at
1886.152 km from Alexandria towards Palermo. The traffic landed at Palermo
onwards to Europe was being affected, while the traffic running between
Alexandria and Marseilles via Fiber Pair #1 is still maintained.

On Wed, Apr 14, 2010 at 2:13 PM, St. Onge,Adam <ASTONGE at travelers.com>wrote:

> Seeing a serious uptick in latency to India from North America and am
> hearing reports of an undersea cable cut in the Mediterranean? Has anyone
> else heard something similar?
>
> Thanks,
> Adam
>
>
> ==============================================================================
> This communication, including attachments, is confidential, may be subject
> to legal privileges, and is intended for the sole use of the addressee. Any
> use, duplication, disclosure or dissemination of this communication, other
> than by the addressee, is prohibited. If you have received this
> communication in error, please notify the sender immediately and delete or
> destroy this communication and all copies.
>

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[Fwd: Re: Undersea cable cut?] [ In reply to ]

copraphage at gmail

Apr 14, 2010, 2:21 PM

Post #2 of 4 (163 views)

Permalink

i'm not sure one necessarily fails to the other... if people don't subscribe
to the other for restoral or if they're supersmart-- to one of the
transrussia overland routes, they're out of luck.

i frankly don't believe enough capacity exists on the transrussia cables to
backup swm3 and swm4.

i work for a network based across the pond

On Wed, Apr 14, 2010 at 4:48 PM, virendra rode <virendra.rode at gmail.com>wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Does anyone across the pond have any further insight into this cut?
>
> Although SEA-ME-WE 3 and 4 are suppose to provide redundancy for
> eachother, not sure what impact has SMW4 segment caused, maybe latency?
>
>
> Any feedback will be appreciated.
>
>
> regards,
> /virendra
>
>
> - -------- Original Message --------
> Subject: Re: Undersea cable cut?
> Date: Wed, 14 Apr 2010 14:18:49 -0400
> From: Chris McDonald <copraphage at gmail.com>
> To: St. Onge,Adam <ASTONGE at travelers.com>
> CC: nanog at nanog.org <nanog at nanog.org>
> References:
> <768FB653686AE54A9B4FB9A1503F03F51C9BFF502A at TENK7MVB.prod.travp.net>
>
> There's a cut in SWM4
>
> *SMW4 Segment 4.1 cable fault*
>
> Cable shunt fault developed on SMW4 segment 4.1 (Egypt / Alexandria ?
> Branching Unit #4A onward France / Marseilles) at 07:15GMT on 14-Apr. 2010.
> However the shunt fault has further deteriorated and the cable segment was
> down at 10:03GMT. Only four unprotected Singapore ? London / Frankfurt
> STM-4c IP trunks were being affected.
>
> SMW4 NOC updated that there is a shunt fault in segment 4.1 between Egypt
> /
> Alexandria and France / Marseilles with cable fault on Fiber Pair #2 at
> 1886.152 km from Alexandria towards Palermo. The traffic landed at Palermo
> onwards to Europe was being affected, while the traffic running between
> Alexandria and Marseilles via Fiber Pair #1 is still maintained.
>
>
>
>
> On Wed, Apr 14, 2010 at 2:13 PM, St. Onge,Adam <ASTONGE at travelers.com
> >wrote:
>
> > Seeing a serious uptick in latency to India from North America and am
> > hearing reports of an undersea cable cut in the Mediterranean? Has anyone
> > else heard something similar?
> >
> > Thanks,
> > Adam
> >
> >
> >
> ==============================================================================
> > This communication, including attachments, is confidential, may be
> subject
> > to legal privileges, and is intended for the sole use of the addressee.
> Any
> > use, duplication, disclosure or dissemination of this communication,
> other
> > than by the addressee, is prohibited. If you have received this
> > communication in error, please notify the sender immediately and delete
> or
> > destroy this communication and all copies.
> >
>
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> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
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> MF9OnPXjGhC4WT6rjng8Pb8=
> =HSRH
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> _______________________________________________
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> Outages at outages.org
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[Fwd: Re: Undersea cable cut?] [ In reply to ]

virendra.rode at gmail

Apr 14, 2010, 3:34 PM

Post #3 of 4 (157 views)

Permalink

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Maybe outages as such may spark some interest in routing more capacity
from europe and asia over the transrussia networks.

regards,
/virendra

Chris McDonald wrote:
> i'm not sure one necessarily fails to the other... if people don't subscribe
> to the other for restoral or if they're supersmart-- to one of the
> transrussia overland routes, they're out of luck.
>
> i frankly don't believe enough capacity exists on the transrussia cables to
> backup swm3 and swm4.
>
> i work for a network based across the pond
>
>
>
>
> On Wed, Apr 14, 2010 at 4:48 PM, virendra rode <virendra.rode at gmail.com>wrote:
>
> Does anyone across the pond have any further insight into this cut?
>
> Although SEA-ME-WE 3 and 4 are suppose to provide redundancy for
> eachother, not sure what impact has SMW4 segment caused, maybe latency?
>
>
> Any feedback will be appreciated.
>
>
> regards,
> /virendra
>
>
> -------- Original Message --------
> Subject: Re: Undersea cable cut?
> Date: Wed, 14 Apr 2010 14:18:49 -0400
> From: Chris McDonald <copraphage at gmail.com>
> To: St. Onge,Adam <ASTONGE at travelers.com>
> CC: nanog at nanog.org <nanog at nanog.org>
> References:
> <768FB653686AE54A9B4FB9A1503F03F51C9BFF502A at TENK7MVB.prod.travp.net>
>
> There's a cut in SWM4
>
> *SMW4 Segment 4.1 cable fault*
>
> Cable shunt fault developed on SMW4 segment 4.1 (Egypt / Alexandria
> Branching Unit #4A onward France / Marseilles) at 07:15GMT on 14-Apr. 2010.
> However the shunt fault has further deteriorated and the cable segment was
> down at 10:03GMT. Only four unprotected Singapore London / Frankfurt
> STM-4c IP trunks were being affected.
>
> SMW4 NOC updated that there is a shunt fault in segment 4.1 between Egypt
> /
> Alexandria and France / Marseilles with cable fault on Fiber Pair #2 at
> 1886.152 km from Alexandria towards Palermo. The traffic landed at Palermo
> onwards to Europe was being affected, while the traffic running between
> Alexandria and Marseilles via Fiber Pair #1 is still maintained.
>
>
>
>
> On Wed, Apr 14, 2010 at 2:13 PM, St. Onge,Adam <ASTONGE at travelers.com
>>>> wrote:
>>>> Seeing a serious uptick in latency to India from North America and am
>>>> hearing reports of an undersea cable cut in the Mediterranean? Has anyone
>>>> else heard something similar?
>>>>
>>>> Thanks,
>>>> Adam
>>>>
>>>>
>>>>
> ==============================================================================
>>>> This communication, including attachments, is confidential, may be
> subject
>>>> to legal privileges, and is intended for the sole use of the addressee.
> Any
>>>> use, duplication, disclosure or dissemination of this communication,
> other
>>>> than by the addressee, is prohibited. If you have received this
>>>> communication in error, please notify the sender immediately and delete
> or
>>>> destroy this communication and all copies.
>>>>
_______________________________________________
Outages mailing list
Outages at outages.org
https://puck.nether.net/mailman/listinfo/outages
>>

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[Fwd: Re: Undersea cable cut?] [ In reply to ]

marty at supine

Apr 15, 2010, 12:33 AM

Post #4 of 4 (155 views)

Permalink

$quoted_author = "virendra rode" ;
>
> Although SEA-ME-WE 3 and 4 are suppose to provide redundancy for
> eachother, not sure what impact has SMW4 segment caused, maybe latency?

We've had a London - Kolkata MPLS link go down and come back with twice it's
normal latency. Am still awaiting more explanation from the provider but
certainly looks like no capacity on similar paths leading to routing "the
other way" round the world.

cheers
Marty