[AusNOG] Vocus Harbour Crossing

[Christopher Pilgrim]

On Thu, Jun 14, 2012 at 12:15 PM, Lincoln Dale <ltd at aristanetworks.com>wrote:

> On Thu, Jun 14, 2012 at 12:04 PM, Christopher Pilgrim <
> chris at pilgrim.net.au> wrote:
>
>> Measuring the latency across the harbour is hardly relevant.
>
>
> Dare I suggest it, but the fact that this is being put in by Vocus means
> that there probably is at least someone with money who think it is relevant.
>
>
>>
>> The lowest latency between the ASX at Gore Hill and major finance
>> buildings (say 2 Chifley Sq, Governor Phillip Tower, AMP Building for
>> example) will always be through the harbour tunnel, and you could even
>> argue that the lowest latency from the ASX to Global Switch is still via
>> the bridge by the time you take into account the network either side of the
>> actual harbour crossing.
>>
>
> Not sure I follow you.  All I'd expect either side of the actual harbour
> is a splice and no pesky conversion from photons to electrons let alone
> anything above layer 1.
>

Correct - so where you pull your cable up from the harbour, and the path it
takes back into the broader network compared to alternate paths, is
completely relevant. You may have a short path across the harbour, but if
the cable has to run another 600 meters in an indirect path either side to
get back to the nearest joint, it adds latency (not saying this is the
case, by the way).

>
>
>> There is some demand for low latency circuits between ASX Gore Hill and
>> Chi-X at Equinix SY1, but as Chi-X currently account for only  2-3% of
>> trading volume in Australia (at the moment anyway) I'm not sure how much
>> demand there will actually be.
>>
>
> Arbitrage is only part of the equation and as you state not as relevant in
> the Australian industry at this point in time. In reality, arbitrage can't
> really be that useful in Australia as the rules state that market orders
> must be met at the lowest price between Chi-X and ASX anyway.
>

Agree. hence limited demand for low latency services between ASX and Chi-X.
The only real demand at the moment is low latency to the ASX, and those
that want that will simply telehouse at the ASX's facility and connect
directly to the market. That said, the rules are changing all the time as
ASIC get more comfortable with the whole dual market arrangement.

>
>
> On Thu, Jun 14, 2012 at 12:02 PM, Ankur Puri <Ankur.Puri at au.ntt.com>wrote:
>
>>  Someone has been reading the news and CommsDay! J
>>
>
> i hadn't, actually. Just knew the geography and demands of certain
> customers very very well. :)
>
>
> cheers,
>
> lincoln.
>
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