Re: RPC Replication over Satellite Links

"Al Mulnick" <amulnick_No_SPAM@xxxxxxxxxxx> wrote in message
news:u$iwz00AGHA.3760@xxxxxxxxxxxxxxxxxxxxxxx
> Jen, I'd be interested to hear the results. Feel free to drop a note
> off-line if you get the chance.
>

Please keep it online or include me in any reports you offer.

Thanks.

--
Herb Martin, MCSE, MVP
Accelerated MCSE
http://www.LearnQuick.Com
[phone number on web site]

> Cheers,
>
> Al
> "Jen" <jen_lars_x@xxxxxxxxxxx> wrote in message
> news:e994PInAGHA.4080@xxxxxxxxxxxxxxxxxxxxxxx
>> Hi Herb and Mulnick,
>> Thanks for input. Yes you are indeed right on the SMTP replication
>> requirements. The design we have in mind involved DCs of the same domain
>> spanning across those sat links, so RPC is going to be needed. Well, at
>> least for this customer the satellite is in a fixed position. Anyway, we
>> are
>> planning for actual tests after Christmas breaks. We'll see how goes
>> then.
>>
>> Btw, we also read of the fact that W2k3 with SP1 dynamically adjusts the
>> send buffers (but also dependent on the memory size) to accommodate for
>> connections with high latencies, not sure if that will have any positive
>> bearing on this scenario.
>>
>> Cheers.
>>
>> "Herb Martin" <news@xxxxxxxxxxxxxx> wrote in message
>> news:ulSJ82kAGHA.2708@xxxxxxxxxxxxxxxxxxxxxxx
>> "Jen" <jen_lars_x@xxxxxxxxxxx> wrote in message
>> news:u9ljceeAGHA.1408@xxxxxxxxxxxxxxxxxxxxxxx
>>> Hi all,
>>> Anyone here with experience replicating AD over a satellite based link?
>>>
>>> The link exhibits between 750 to 2500 ms turn around time for pings. The
>>> throughput varies between 20Kbps to 120Kbps. Out of 10 pings 1 or 2 will
>>> occasionally time out.
>>>
>>> I'm curious if the RPC use for AD replication is tolerant of that kind
>>> of
>>> satellite link. Anyone with such experience?
>>
>> You are probably on the INSIDE of the borderline where it will likely
>> work. Try it. Setup a test domain and just do it.
>>
>> If you get a few errors but it generally works you can likely
>> live with that.
>>
>> The problem with SMTP replication is that it requires different DOMAINS
>> (by design) and so only replicates forest wide information.
>>
>> One thing you don't mention: Is the satellite connectivity consistent
>> or at least at predictable times?
>>
>> (I have one client whose African remote sites get a different satellite
>> "time window" each day since the satellite is not geosynchronous but
>> change location/time each day.)
>>
>> --
>> Herb Martin, MCSE, MVP
>> Accelerated MCSE
>> http://www.LearnQuick.Com
>> [phone number on web site]
>>
>>>
>>>
>>
>>
>>
>
>


.

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