On 20-Dec-2006, at 17:41, John @ netTRUST wrote:
Customers do not expect the world for free and if you
compare it to
Frame Relay (A serice that ISP's like yourself sell as 'carrier
that is just another overpriced, unreliable piece of you know what
- but one
which comes with a *marketing* edge - It's expensive, comes with a
and the 'feel good' aspect that if Telecom / Telstra is screwing
you at every
bill - it must be the bee's knee's.
With respect to network diversity, the comparison you want to make is
the cost of conditioning and connecting an *existing piece of copper
infrastructure, paid for long ago by the taxpayer* to the cost of
that plus *a second, diverse, independent access to your building
such that you have protected access to the core*.
Frame Relay is typically delivered over an unprotected local loop,
just like DSL (although in some cases that unprotected loop may be in-
building from a SONET node, which if you're lucky will have a
protected path to the core). (If you're extra lucky, that protected
path will actually run over different strands of fibre, and follow
different fibre routes, and won't be two wavelengths provisioned on
the same pair of glass.) The difference between frame-relay and DSL
tends to be the contracted commitment by the supplier to fixing it
when it breaks, a fact which you alluded to, snarkily, above.
The cheapest way to get diverse access to something is to find two
different providers who hate each other sufficiently that they won't
allow common use of fibre routes or conduit, and whose aggregation
and switching nodes are in different parts of town, and use both to
access whatever it is you're trying to reach (a datacentre, the
Internet, the PSTN, whatever). If you're a business in an
established, multi-tenant building, it's perfectly possible that you
can buy such things for relatively sane amounts of money, without
anybody having to do a new build.
Diversity in suppliers is in many cases better than diverse access to
a single provider, since you are dealing with different sets of
engineers who hopefully aren't all getting drunk together in the same
room in Palmerston North, reconfiguring their routers from their
laptops and smart phones at the same time for fun.
If you're a residential user in some parts of the country you have
multi-supplier options (e.g. a TCL cable modem and a Telecom DSL
service, or Telecom DSL and Woosh, or frame-relay and Citylink metro
ethernet, or ISDN and 3G). Multi-homing using devices which are
naturally infected with such horrors as NAT and dynamic addresses is
not fun, but it can be done for those who are prepared to put in (or
pay for) the hours of fiddling involved.
But getting a single supplier to build diverse access to your office/
house/whatever is unlikely to be tremendously cheap, unless you're a
big customer or located in a particularly strategic location in a
This is not a new development, or a NZ-specific development. There's
a reason that the oft-quoted five-nines reliability of the PSTN is
only ever quoted in respect to the core, and not the last mile.