topic Re: Broadband Issues - Local Interface Question in Archived Posts

Broadband Issues - Local Interface Question

JOV1 — Sun, 05 Sep 2021 09:03:42 GMT

My broadband fibre to the end of road has been playing up for well over a week - had all the online diagnostics, EE Engineer visit, then a Openreach engineer to the Cab and the house.

The internet drops but the aqua light stays on the hub, sometimes it comes back on it own after a few minutes other time if you remove the cable to the master socket until it drop the line completely plug the cable back in it will reacquire the broadband the then the internet.

When these drop outs happen I cannot connect to the local interface 192.168.1.254 on the router -

Not only can I not connect using a browser but I cannot reach it from a cmd line ping.

I explained this to both engineers,

if this is on the LAN side of the router then how can the external line affect it, If the line is at fault I would expect to be able to see the internal interface.

EE engineer, saw no issues with the router etc so Openreach came out - no major issues found but the line was not performing perfectly. He replaced the master socket - reset the port at the cab and check the physical connections.

The issue is still there it drops randomly, I notice it multiple times a day but it could be more. It is not WIFI as I have a device connect to the router via ethernet.

Re: Broadband Issues - Local Interface Question

XRaySpeX — Sun, 05 Sep 2021 10:24:03 GMT

As long as the Aqua light is ON steady you have a BB connection.

Before the week of playing up was it all OK?

The next time it happens please issue the command 'ipconfig /all' from a PC.

Re: Broadband Issues - Local Interface Question

mikeliuk — Sun, 05 Sep 2021 11:18:04 GMT

Hi @JOV1 ,

In addition to the above good advice, which will sanity check that you still have your local IP on the right subnet and with the right default gateway, I recommend to check the switch-port LEDs during normal operations and when ping fails.

Normal operations will be rapid flashing whereas one-sided failure of ping would be less than half this rate as one side times out receiving no replies. The other thing to look for is if the switch-port LEDs seem completely frozen without even registering the send side of pings.

I would also recommend trying to ping between two other devices on your LAN, e.g. a laptop and a mobile, which will work if switching is ok but even when the webserver is down. You can also try an nslookup against your router LAN IP.

Assuming your laptop has an IP but the router LAN IP responds to nothing and the switch-port LEDs are frozen or slow-flashing, it would suggest the router has entered a bad state and might be faulty if it happens frequently.

If the router is in a bad state, it may not be correctly updating its front LEDs either. Log entries may show what error has occurred such as the WAN link dropping (as you observed, this shouldn't impact LAN functionality) or some services on the router dying (which might impact some or all LAN-side functionality).

If you use Linux, you can nmap the router LAN IP to see what functionality remains available. Not vital information but would confirm some of the above indirect checks more directly.

Re: Broadband Issues - Local Interface Question

XRaySpeX — Sun, 05 Sep 2021 11:21:48 GMT

@mikeliuk : Where's the switch-port LEDs? Another red herring of yours?

Re: Broadband Issues - Local Interface Question

XRaySpeX — Sun, 05 Sep 2021 11:28:46 GMT

As far as I know the EE SH does not respond to ping. Did it ever?

Re: Broadband Issues - Local Interface Question

mikeliuk — Sun, 05 Sep 2021 13:16:19 GMT

I don't know whether to be amazed or horrified that this question has been asked:

Where's the switch-port LEDs?

Re: Broadband Issues - Local Interface Question

XRaySpeX — Sun, 05 Sep 2021 14:12:18 GMT

@mikeliuk : Then answer my Q. Where have I missed it?

Re: Broadband Issues - Local Interface Question

JOV1 — Sun, 05 Sep 2021 13:58:36 GMT

The 192.168.1.254 interface does respond to ping -

My question is a simple one - EE seem to think my issue is external to the premises - however when the Broadband drops the light stays aqua - but the Local Interface is not accessible by either ping or via a browser.

Logically why would an external issue prevent access to this interface.

Re: Broadband Issues - Local Interface Question

JOV1 — Sun, 05 Sep 2021 14:04:35 GMT

There are no LEDs on the any ports on the Hub.

Re: Broadband Issues - Local Interface Question

JOV1 — Sun, 05 Sep 2021 14:05:13 GMT

There aren't any.

Re: Broadband Issues - Local Interface Question

XRaySpeX — Sun, 05 Sep 2021 14:11:43 GMT

Then what's @mikeliuk on about? Beats me!

Re: Broadband Issues - Local Interface Question

Mustrum — Sun, 05 Sep 2021 14:17:19 GMT

@JOV1 I think you may have to look into the router logs to try and spot anything that is causing your issues - but beware there will be loads of irrelevant things to look at.

CS may have spotted something on their systems, or they may just be clutching at straws - there is a limited list of things they can do or see.

Another router may help, have they offered one?

@mikeliuk perhaps you are thinking of ethernet activity LED's - it would be interesting to hear where people can find them on the EE Router?

Re: Broadband Issues - Local Interface Question

JOV1 — Sun, 05 Sep 2021 14:31:40 GMT

The logs were checked by EE Engineer, nothing significant the router had been up for longer than the broadband indicating an external issue unless that interface froze.

In fact, if I remove the cable to the master socket whilst everything is working I can still ping that interface. This makes me suspect a router issue. Hence my question as to how a line issue could prevent me accessing that interface.

Re: Broadband Issues - Local Interface Question

XRaySpeX — Sun, 05 Sep 2021 14:33:44 GMT

I'm still waiting on ipconfig.

Re: Broadband Issues - Local Interface Question

JOV1 — Sun, 05 Sep 2021 21:46:09 GMT

Why!

I have checked the config - and from my limited knowledge from my ICND1 and 2 courses a few moons ago I can see no issues, also what is the significance of a single local host IP configuration when there are 3 windows machines one Linux and at least 5 android devices that cannot access the internet.

I asked a question as to why I cannot see the local internal/gateway because of a line issue/fault, which is what EE have said it is. .

Re: Broadband Issues - Local Interface Question

XRaySpeX — Mon, 06 Sep 2021 00:40:14 GMT

May I see the result of the ipconfig? You don't know what I'm looking for.

Re: Broadband Issues - Local Interface Question

JOV1 — Mon, 06 Sep 2021 07:18:25 GMT

I do not see the relevance - I have checked the config and it was checked by EE over the phone. the only common elements from a local host would be the gateway and subnet mask, plus there are multiple devices on used all are affected.

here it is. However, It would be nice if my original question could be answered.

Windows IP Configuration

Host Name . . . . . . . . . . . . : DESKTOP-JMICEL6
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : home

Ethernet adapter Ethernet:

Connection-specific DNS Suffix . : home
Description . . . . . . . . . . . : Intel(R) Ethernet Connection (2) I219-LM
Physical Address. . . . . . . . . : 18-66-DA-36-48-E7
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::548:ac19:49bc:e00a%14(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.139(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 31 August 2021 20:19:56
Lease Expires . . . . . . . . . . : 07 September 2021 07:49:57
Default Gateway . . . . . . . . . : 192.168.1.254
DHCP Server . . . . . . . . . . . : 192.168.1.254
DHCPv6 IAID . . . . . . . . . . . : 236480218
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-26-FB-8F-53-18-66-DA-36-48-E7
DNS Servers . . . . . . . . . . . : 192.168.1.254
NetBIOS over Tcpip. . . . . . . . : Enabled