[c-nsp] GSR 12410 Redundancy

[Dan Armstrong]

$hit happens.  You have to perform software upgrades, people make 
mistakes, upgrades have to be made, cables moved. etc. etc.  1 box will 
at some point take your entire network down. 

If you are already buying 2 GRP-Bs, and 2 sets of linecards, I can't 
imagine just the cost of a second chassis would be all that much more, 
would it?  It can also give you some geographic redundancy...



Paul Stewart wrote:

>Thanks... so this would be a comfortable level of redundancy versus having a
>whole second unit in your opinion?  I realize that having two would always be
>better...;)
>
>On Tue, 06 Jun 2006 10:07:46 -0700
>Pete Templin <petelists at templin.org> wrote:
>  
>
>>Paul Stewart wrote:
>>    
>>
>>>What is the odds of a total chassis failure in one of these boxes?  The
>>>      
>>>
>>idea of
>>    
>>
>>>having two of them when in fact one is overkill is expensive if it's not
>>>needed. 
>>>
>>>I realize this is a loaded question but is there redundancy in the
>>>      
>>>
>>backplane
>>    
>>
>>>itself?
>>>      
>>>
>>Deploy 2xCSC, and you'll have clock redundancy (2N) and fabric 
>>redundancy (N+1).
>>
>>pt
>>    
>>
>
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