This discussion has become interesting!

The network in question is 210.86.52.0/22 so covers 52.0 -> 55.255.
There are 3 reserved addresses - 52.0 for network, 55.255 for broadcast
and 55.254 for the RAN interface. So 210.86.52.255 is a valid address.

As Craig has shown below the address is routable! What I am wondering
is - is the address not routable for just Chrissy? Is it a modem
problem? It looks like she has an internal modem - does this think all
.255 addresses are broadcast and therefore not useable? We had a problem
a long time ago with the M10 where the .127 was unusable because the
modem had an internal .128 mask.

I would contend that this is not a Telecom problem but a CPE problem!!
After all the network is the same for Chrissy and the customer who Craig
traceroute'd below.

What say you all?

Cheers
Wayne
ps this is my area as Chrissy says.

>>> "Craig Whitmore" <lennon@orcon.net.nz> 4/01/02 09:40:33 >>>
> Yes it is and that is why it is a problem. The IP addy is allocated
> to the line when I logon to my ISP - it is done by the Telecom
> equipment in response to my request to access my ISP - it is not
> done by my ISP - well, that is what Telecom told me. They
> have told me that they have a problem with the list of valid IP
> addys and this is one. They told me that they would fix it but
> it is the same IP addy that I have had in the past with the same
> problem.
>

Telecom have filters on what IP Addresses that can be allocated to a
user,
so an ISP trying to allocate an IP Address which doesn't belong to the
ISP
is impossible (as Telecom Filter it out). BUT I have seen Telecom's
Radius
servers allocate "Random IP" addresses on FastIP Direct (On Modem
Dialup a
number of times, so as Jetstream/jetstart use the same radius servers
it
might be a similar fault).

The IP Address is a legal one.. (someone is on it a the moment), You
just
have to understand IP Addresses (or not understand it)

Type escape sequence to abort.
Tracing the route to 210-86-52-255.jetstart.xtra.co.nz (210.86.52.255)

  1 a5-0-0-12.akcr5.global-gateway.net.nz (202.50.119.65) [AS 4648] 4
msec 4
msec 0 msec
  2 f4-0.akcr1.netgate.net.nz (202.37.246.82) [AS 4648] 4 msec 4 msec 4
msec
  3 xtra.akcr1.netgate.net.nz (202.37.245.46) [AS 4648] 4 msec 4 msec 4
msec
  4 203.96.111.229 [AS 9325] 4 msec 4 msec 4 msec
  5 * * *
  6 210-86-52-255.jetstart.xtra.co.nz (210.86.52.255) [AS 9325] 56 msec
56
msec 56 msec

>
>
> BTW - Chris and Sahil (who e-mailed me privately) can you answer
> these questions please
>
> Why should I call my ISP?

As they should be (and are in Telecom's T&C) the 1st contact of all
problems
you may have.

>
> What can my ISP do about it?

They help you fix your problem, or contact the right people to fix
your
problem.

>
> Did you know that my ISP does not allocate me IP addy?

It depends if you are on jetstream/jetstart.

>
> Why did you assume that I did not call my ISP?
>
> What would you do AFTER you called your ISP 10+ times
> with this exact same problem and had called the ADSL help
> desk too (the one for my ISP) and called (actually they called
> me) the Telecom ADSL help desk?

The IP Allocation Part is not really Handled by the ADSL Help desk, as
they
look after the "physical layer" of the DSL Part. Anything other than
that is
handled by another department.

>

Thanks
Craig Whitmore
New Zealand DSL Information
http://www.nzdsl.co.nz

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