[c-nsp] cisco-nsp Digest, Vol 60, Issue 66

[Matthew Crocker]

>

Neal,

Can't you use the Automatic Protection Mechanism of SONET to handle  
failover?   Check into the APM controls on the 7507s.  You may have to  
configure something on the other end as well.   You would need two  
OC-3s, one for each 7507 though.

>> Date: Tue, 20 Nov 2007 10:04:21 -0600
>> From: "neal rauhauser" <nrauhauser at gmail.com>
>> Subject: [c-nsp] small box for switching POS link?
>> To: cisco-nsp at puck.nether.net, cisco at groupstudy.com
>> Message-ID:
>> <9515c62d0711200804k11b31502t16d389edd2829f9b at mail.gmail.com>
>> Content-Type: text/plain; charset=ISO-8859-1
>>
>> Ladies & Gentlemen,
>>
>>
>>    I have a customer with PA-POS-OC3 cards installed in a pair of
>> Cisco 7507s. Right now they can physically remove the line from the
>> first machine, plug it into the second, and things neatly switch  
>> over.
>>
>>
>>    They've asked me to come up with a remote control method of
>> switching the fiber optic line. The incoming circuit and two routers
>> are the only things we're ever going to switch at this location. This
>> solution does not need to be carrier grade, it just needs to be
>> remotely controllable.
>>
>>
>>    I suspect the answer is that anything that switches STM1 sonet
>> links is going to be large, heavy, expensive, and -48v - all things
>> that do not fit with what these guys are trying to do. if anyone has
>> any inspiration on how to accomplish this I'd be glad to hear it ...
>>
>>
>>
>>
>>                                                                       Neal
>
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