Advantages of MS Spring over SNCP

Hari Reddy

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May 15, 2010, 3:22:24 PM5/15/10

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What are the Advantages of MS Spring over SNCP?

I know one advantage is more traffic is possible in MS Spring, because
of protection path. is there any more advantages?

Hari Reddy

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May 21, 2010, 11:56:57 PM5/21/10

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Can any one answer this...

Michelot

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May 22, 2010, 4:22:22 PM5/22/10

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Bonsoir Hari,

> > I know one advantage is more traffic is possible in MS Spring, because
> > of protection path. is there any more advantages?

MS SPring protection is for a complete ring that can transport extra
traffic in normal operation, it can use APS. It is bidirectional.

SNCP can be used in any topology, defined to be unidirectional, with
no extra traffic. So APS is not useful.

Perhaps Huub will complete,
best regards,
Michelot

Huub van Helvoort

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May 22, 2010, 5:02:44 PM5/22/10

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Hello Hari,

Please excuse me for not immediately responding to
your questions. I have to work sometines in locations
where the internet access is limited...

You wrote:

>> What are the Advantages of MS Spring over SNCP?
>>
>> I know one advantage is more traffic is possible in MS Spring, because
>> of protection path. is there any more advantages?

The protection path is shared by the working paths
in MS-SPRing so the redundancy is less than 1005.
In SNCP the protection path s always 100% (in case
of 1+1 and 1:1).

In SNCP each path has its own APS protocol process.
In MS-SPRing there is one APS protocol process for
the whole ring, independent of the number of paths
that cross the ring.

Regards, Huub.

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Hari Reddy

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May 24, 2010, 10:05:25 PM5/24/10

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Is there any Advantages of MS Spring over SNCP? other than extra
traffic. APS is the diff between MSSPring and SNCP.

Huub van Helvoort

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May 28, 2010, 10:32:41 AM5/28/10

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Hi Hari,

You replied:

>>>> What are the Advantages of MS Spring over SNCP?
>>
>>>> I know one advantage is more traffic is possible in MS Spring, because
>>>> of protection path. is there any more advantages?
>>
>> The protection path is shared by the working paths
>> in MS-SPRing so the redundancy is less than 1005.
>> In SNCP the protection path s always 100% (in case
>> of 1+1 and 1:1).
>>
>> In SNCP each path has its own APS protocol process.
>> In MS-SPRing there is one APS protocol process for
>> the whole ring, independent of the number of paths
>> that cross the ring.
>

> Is there any Advantages of MS Spring over SNCP? other than extra
> traffic. APS is the diff between MSSPring and SNCP.

As I mentioned above there is less (< 100%) bandwidth
required for the protection path in the ring.
Extra traffic can be used in both MS-SPRing and 1:1 SNCP.

SNCP unidirectional 1+1 does not need APS.
All other, e.g. bi-directional, 1:1 do need APS.

If you use SNCP in a ring, every VC-4 in the ring requires
its own SNCP, including APS.
In MS-SPRing all VC-4 are switched using a single APS.

BR. Huub.

Hari Reddy

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Jun 1, 2010, 2:17:06 PM6/1/10

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> Always remember that you are unique...just like everyone else...- Hide quoted text -
>
> - Show quoted text -

Dear Hubb,

Thanks for information. But SNCP is Uni,1+1, in this case how APS will
come in to picture?

Regards
Hari Reddy

Huub van Helvoort

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Jun 2, 2010, 3:31:32 AM6/2/10

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Hello Hari,

you replied:

> Thanks for information. But SNCP is Uni,1+1, in this case how APS will
> come in to picture?

SNCP has different flavors: SNC/I, SNC/N, SNC/S depending on the
detection
mechanism used in protection switching.
Uni-directional / bi-directional are protection scenarios.
1+1 and 1:1 are protection architectures.

Only 1+1 uni-directional PS does not require APS.
All other combinations (bi-directional, or 1:1) do require APS.

Regards, Huub.