What controls WAN lease time - Router, cable modem, ISP?
Who/What controls WAN lease time - Router, cable modem, ISP?
We are in Rancho Palos Verdes, CA
Cox recently changed all neighborhood IPs, apparently as part of some maintenance.
Now I see -
Lease Obtained 0 days,1 Hours,0 Minutes
Lease Expires 0 days,0 Hours,57 Minutes
... And in the R7000 router logs, repeats of this every hour -
[Time synchronized with NTP server] Friday, Jul 15,2016 05:36:21
[Internet connected] IP address: 72.99.99.99, Friday, Jul 15,2016 05:36:20
[Time synchronized with NTP server] Friday, Jul 15,2016 05:06:21
[Internet connected] IP address: 72.99.99.99, Friday, Jul 15,2016 05:06:20
... which may explain why Netflix kept going black periodically last night.
NO related hourly entries in the cable modem log.
cable modem = Motorola SB6120
router = R7000, fw=V1.0.5.70_1.1.91
P.S. this did not happen before Cox changed the WAN IP ...
Who controls the lease time setting ?
Ah. More searching seems to show that the ISP controls that parameter.
Digging deeper into the logs, it seems that it changed mid-afternoon on the 11th; the IP change was at midnight of the 13th
I don't know why Cox set it so short.
