Re: How long is BT Broadband IP lease?

On 5 Mar 2006, "Laurence Baker" wrote:

I have a wireless ADSL modem which is on all the time.
How often would my IP address change if at all?

a) depends on the Isp as to how "sticky" the IP is. I've used at
least three ISPs with dynamic IP addresses, two were quite 'sticky'
(so if there was some glitch that caused my router to disconnect, it
went back on and was allocated the same IP at least 90% of times)

b) your router will presumably stay online for long periods, and it
should renew the lease itself, at intervals, without any change...

But again, how long your connection stays up depends on the
ISP quite a bit (eg how often they might do maintenance work so
the connection could be dropped frequently/infrequently)...

As one example, a friend in Dover has had his router powered up for
~90 days with only two new logins... his IP is static, but this is
just to demonstrate a connection may be 'up' for weeks at a time.


LOGIN #1 (router powered up)
2005-12-06 13:34:15> Received time from Time Server 129.6.15.29

2006-01-11 7:50:41> ATM Disconnected
2006-01-11 7:50:41> ADSL disconnected
....
LOGIN #2 (ISP /BT work ?)
2006-01-11 7:51:44> NAPT: many-to-one default session is up.
2006-01-11 7:51:44> PPP1 Session is up.
2006-02-25 23:43:48> PPP1 Session is down.
2006-02-25 23:43:48> NAT/NAPT Session Stop: VC# 0
....
LOGIN #3 (ISP /BT work ? probably his ISP: Metronet)
.

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