The Road Goes Ever On wrote:
> Dave, idle curiousity - in your opinion, are there circumstances in which
> you would NOT want to run OAM?

   I suppose if you configure an ATM interface with only one PVC and you 
don't subinterface, OAM would do little good, nor harm I might add.

> 
> I forget the exact situation, but I was working with a customer on an
issue,
> and the customer brought up OAM, and my own reading suggested it wasn't a
> bright idea. Might have been on an RLAN design - ATM DS3 at the host and
DSL
> at a number of remote sites ( work at home, IIRC )

   Without specifcs I hate to speculate but low end DSL "routers" don't 
support OAM anyway.

> 
> If OAM detects a failure on the ATM circuit, doesn't it shut down the
> interface, requiring manual restart when the line comes back up? If so, OAM
> is more of a carrier thing?

   I is definately not a carrier thing.  The loss of OAM cells causes 
the subinterface, PVC, to go down though not in shutdowm state.  This is 
very useful, even mandatory, when doing certain backup configs and HSRP 
tracking.  Without OAM your subinterface is up regardless of the state 
of the connection on the other side of the PVC.

   The physical interface is indicative of the status of you connection 
to the ATM switch. OAM allows for the status of the PVC.

   Dave

> 
> thanks
> 
> Chuck
> 
> ""MADMAN""  wrote in message
> news:[EMAIL PROTECTED]
> 
>>Your question is not very clear but OAM works fine and is quite
>>simple to configure:
>>
>>interface ATM1/0.32 point-to-point
>>  ip address 1.1.1.2 255.255.255.0
>>  pvc madman 1/32
>>   oam-pvc manage  All,
>>
>>>Any idea about ATM links with end-to-end support for OAM cells
>>
>>configuration
>>
>>>to detect remote equipment failure
>>>
>>>Thanks and best regards
>>>_ _ _ _ _ _ _ _ _ _
>>
>>-- 
>>David Madland
>>CCIE# 2016
>>Sr. Network Engineer
>>Qwest Communications
>>612-664-3367
>>
>>"Government can do something for the people only in proportion as it
>>can do something to the people." -- Thomas Jefferson
-- 
David Madland
CCIE# 2016
Sr. Network Engineer
Qwest Communications
612-664-3367

"Government can do something for the people only in proportion as it
can do something to the people." -- Thomas Jefferson




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