How dynamic is dynamic

I'm wondering how dynamic are the BT home broadband IP addresses these days ?

Reason is that someone I support is using their home broadband to connect with (Windows) Remote Desktop into their work PC.
Every morning the last few days I've had to login remotely to the work PC to whitelist their new IP in the firewall.
Don't know whether this is an FTTC or an ADSL version connection.

They might be turning off their router overnight, as daily is unusual but not unheard of.

This is where you really need a VPN to the firewall, rather than white listing, there are enough problems in the RDP protocol, you need to wrap it in something more secure.

Plus of course I hope when white-listing he removes the previous address for that user from it. An easily forgotten step.

Thanks both.

Very good point Robertos.

JChamier : I doubt the router is being turned off overnight, although I know the laptop definitely was being turned off.
The VPN is a very good point. It had occurred to me, but haven't done anything about that. Yet. It can go on today's ToDo list

In reply to a post by clyde123:

I'm wondering how dynamic are the BT home broadband IP addresses these days ?

I have had a dynamic IP for Months but that's using our own router and not BT's one and the only time our IP has changed in less than a month is when I have done changes to our router.

But the last time I was using BT's Hubs I was seeing it last at least a month before it did its remote reboot.

Paul

FTTC connection here will give a new IP after every dropout or reboot, so very dynamic.

In reply to a post by TheInstaller:

FTTC connection here will give a new IP after every dropout or reboot, so very dynamic.

That rather depends on how often you suffer a dropout or reboot. Here that's perhaps once a month, so dynamic yes but only changing around once a month.

Agreed, I have also rebooted our router and when it connected back up was given the same IP.

Paul

I've currently got DLM dropping my line every night working my way from 6db to 3db SNR and I have kept the same IP every resync.

That's on EE with a dynamic IP.

It all depends what IP's ISP's have available in their pools.

In reply to a post by wolvesmad:

I've currently got DLM dropping my line every night working my way from 6db to 3db SNR and I have kept the same IP every resync.

That's on EE with a dynamic IP.

It all depends what IP's ISP's have available in their pools.

I had FTTC via NowTV installed on the 11th March and according to the router at least it's not dropped as showing 512 hours uptime for WAN. I have also seen the SNR change, and the sync speed go up multiple times.

In reply to a post by clyde123:

I'm wondering how dynamic are the BT home broadband IP addresses these days ?

Very - can they not white list a domain name and him use a DDNS service perhaps?

Strange that, because the WAN uptime on my HG612 resets when DLM drops the SNR.

My PPPOE session drops to my router too,

Sure there is a technical reason for it.

The ones earlier Gary333 may have SRA on their his connection. Last I heard about it from Openreach was in Nov 2018 about them starting large scale trials.

Edited by RobertoS (Fri 03-Apr-20 13:15:04)

In reply to a post by RobertoS:

The ones earlier may have SRA on their connection.

I always liked the idea of SRA, but I wonder how much ISP-supplied kit supports it.

In reply to a post by wolvesmad:

Strange that, because the WAN uptime on my HG612 resets when DLM drops the SNR.

My PPPOE session drops to my router too,

Sure there is a technical reason for it.

I thought it would reset too as lots of people on here say it happens. However, on mine it doesn't appear to unless it's just a dodgy reading from the Now TV Hub 2 (or whatever they call it).

I noticed that they lowered my SNR from 6 to 3, however it made no difference to speed as I am only on the 40mb package and was already at the (what I presume is the limit) of 39,789kbps. I started off at 32mb and it rose to the current c.40mb after 2-3 days.

In reply to a post by Oliver341:

In reply to a post by RobertoS:

The ones earlier may have SRA on their connection.

I always liked the idea of SRA, but I wonder how much ISP-supplied kit supports it.

I've edited my post. I thought there were a couple, but possibly only Gary333. His multiple speed increases due to target SNRM drops suggest SRA, unless he is confusing WAN uptime and Router uptime which I doubt.

I'm not that familiar with the router but it seems SRA status can be obtained via a command:

xdslcmd profile --show

In reply to a post by MCM:

In reply to a post by TheInstaller:

FTTC connection here will give a new IP after every dropout or reboot, so very dynamic.

That rather depends on how often you suffer a dropout or reboot. Here that's perhaps once a month, so dynamic yes but only changing around once a month.

With the BT connection here as i say a new IP will be given every time there is a drop, which here can be a few times a day occasionally or if i reboot the hub. I can't speak for anyone else's setup, however as i say the IP here is very dynamic and changes every time there is a loss of connection.

If the OP wants to be able to remote into their connection, a DDNS setup will solve the IP address changing problem. The BT hub already has in its settings pages a variety of well know services, so setup is no more than entering a username and password of said service.

In reply to a post by Oliver341:

I'm not that familiar with the router but it seems SRA status can be obtained via a command:

xdslcmd profile --show

I don't know the router either, but the variants I have seen are that and xdslctl --show

Plus both with an "a" to start instead of "x".

In reply to a post by RobertoS:

In reply to a post by Oliver341:

In reply to a post by RobertoS:

The ones earlier may have SRA on their connection.

I always liked the idea of SRA, but I wonder how much ISP-supplied kit supports it.

I've edited my post. I thought there were a couple, but possibly only Gary333. His multiple speed increases due to target SNRM drops suggest SRA, unless he is confusing WAN uptime and Router uptime which I doubt.

I’m not sure what SRA is however the cabinet is a relatively new BDUK one they went live around a year ago. My speeds are well over the maximum Openreach quote for “high” for the line.

If it makes a difference the speed increases took place on the 6db profile with 3 changes happening across 3 days. The change from 6db to 3d took place around day 5 but didn’t yield any extra speed - but this could be because I’m already at the maximum for the package.

The SNR has dropped to around 2.5db across last 20 days but there appears to be no resets. Like you say it might be the router only has its own up time and I just cannot see line time - but the LAN figures are lower as I’ve made changes to settings than the WAN.

Edited by gary333 (Fri 03-Apr-20 19:45:04)

Just checked the stats and it appears this evening my SNR has returned to 6db, however router is still quoting 525 hours uptime for WAN. Connection speed is unchanged.

I think you need more to try and work out why your connection is regularly dropping rather than about how sticky your IPv4 address might be. Frequent drops such as you are seeing are by no means the norm.