Hub 5 seems to not allocate IP Address

[Gooders77]

Been with virgin broadband for a good 10 years. Been using a hub2 in modem mode and mown Asus Router.

got a new contract with VM and they supplied a new router due to speed increase. I originally set it up in modem mode and noticed we kept losing internet connection10-15 times a day turning everything off seemed to resolve it for a day but then occured again. Changed router to a TP link but similar thing happened.

Called support who basically wanted to take my router out the equation and turned the Hub 5 back to router mode for a few days which i did and things seemed ok for 6 days they Sunday afternoon got back home and no internet. power reset several times but not all devices would connect to the wifi. My iPhone could see the wifi SSID but when connecting just kept spinning. Xbox X would not connect to wired connection or wifi, iMac wouldn't connect over wifi, laptop hard wired to router would not connect etc.

When looking at the ifconfig my laptop was not being issued an IP Address, the xbox has a ip address of all 0.0.0.0 but  the random flashes to an ip address i don't recognised 169.254.XX.XXX for about 0 seconds then jumps back to the 0.0.0.0 then al of a sudden the laptop connects and gains an IP address after about 1hr of not connecting via hard wire. Under no circumstances does the xbox connect so I used the hotspot on my phone to connect the xbox to the internet and it worked so i could rule out the xbox at fault.

Called support again tonight and they say can't see a problem with the router but there is an internet issue in the area but it just doesn't see right as to why it won't allocate an ip address correctly. they said they are going to monitor the internet to our house over the next 24hrs and see what happens but it seems more of a router issue to me.

could we connect the old hub 2 again to see if thats more stable?

Any advise or how do i progress this?

Thanks in advance

[legacy1]

faulty hub or just that more downstream and upstream channels with the new hub are a problem not that it would cause the DHCP problem but the other problem.

at some point test modem mode with a PC no router if stable copy its MAC to your router 

[Client62]

This reads like another HUB 5 with a failed DHCP server.

[Gooders77]

Well that is my thoughts on it - it’s so random how devices work or don’t work. 
I do have a Sinologist NAS drive which can run as a DHCP server so could use this an an option but don’t really want to mess around. 
I literally returned the TP link router Sunday morning so don’t have anything to switch back to modem mode 

[Client62]

If we are issued with a Hub 5 it will be operated in model mode from the off.

We just do not have the time / inclination to deal with ...

Hub 5 Router mode, current reported issues:
1. Wi-Fi & DHCP Fail when both SSIDs are changed. (in the Wizard and in the Menu)
2. Wi-Fi SSID changed in the setup Wizard reverts to factory settings after a few weeks.
3. DHCP Fails with multiple DHCP devices.
4. DHCP Reserved IP list may fail to accept entries.
5. DNS All queries are being intercepted by the Hub 5.
6. DNS Queries for AWS hosts time out with both VM DNS & Public DNS.
7. DNS DNSSEC queries fail.
8. Port Forwarding may not work.
9. RTSP stream / VRChat crashes & reboots Hub 5. (Sonos via Wi-Fi may be a trigger)
10. Wi-Fi 6 / 802.11ax Fails to be visible to many 2.4GHz only devices.
11. (Suspected) A laptop / mobile / tablet connected via 5GHz Wi-Fi may be unable to access a printer connected by 2.4GHz. May also mean mobile on 5GHz is unable to detect / manage IoTs on 2.4GHz.

[Gooders77]

Funnily enough I did change the SSID on 2.4 and 5mhz wifi bands

[Gooders77]

Can anyone who knows what they are looking at advise on any issues with the below?

Cable Modem StatusItem Status Comments

Acquired Downstream Channel(Hz)	331000000	Locked
Ranged Upstream Channel(Hz)	49600000	Ranged
Provisioning State	Online	Operational

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

1	331000000	9.9	39	QAM 256	25
2	139000000	8.1	38	QAM 256	1
3	147000000	8.2	38	QAM 256	2
4	155000000	8.2	38	QAM 256	3
5	163000000	8.1	38	QAM 256	4
6	171000000	8	38	QAM 256	5
7	179000000	8	38	QAM 256	6
8	187000000	8.1	38	QAM 256	7
9	195000000	8.4	38	QAM 256	8
10	203000000	8.3	38	QAM 256	9
11	211000000	8.5	38	QAM 256	10
12	219000000	8.6	39	QAM 256	11
13	227000000	8.6	39	QAM 256	12
14	235000000	8.8	39	QAM 256	13
15	243000000	8.8	39	QAM 256	14
16	251000000	8.8	39	QAM 256	15
17	259000000	8.7	39	QAM 256	16
18	267000000	8.6	39	QAM 256	17
19	275000000	8.7	39	QAM 256	18
20	283000000	8.9	39	QAM 256	19
21	291000000	9.2	39	QAM 256	20
22	299000000	9.4	39	QAM 256	21
23	307000000	9.5	39	QAM 256	22
24	315000000	9.7	39	QAM 256	23
25	323000000	9.8	39	QAM 256	24
26	339000000	10	39	QAM 256	26
27	347000000	10.1	39	QAM 256	27
28	355000000	10	40	QAM 256	28
29	363000000	10.2	40	QAM 256	29
30	371000000	10.4	40	QAM 256	30
31	379000000	10.7	40	QAM 256	31

Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1	Locked	39	0	0
2	Locked	38	0	0
3	Locked	38	0	0
4	Locked	38	0	0
5	Locked	38	0	0
6	Locked	38	0	0
7	Locked	38	0	0
8	Locked	38	0	0
9	Locked	38	1	0
10	Locked	38	0	0
11	Locked	38	1	0
12	Locked	39	0	0
13	Locked	39	1	0
14	Locked	39	0	0
15	Locked	39	0	0
16	Locked	39	0	0
17	Locked	39	0	0
18	Locked	39	0	0
19	Locked	39	0	0
20	Locked	39	1	0
21	Locked	39	0	0
22	Locked	39	1	0
23	Locked	39	0	0
24	Locked	39	0	0
25	Locked	39	1	0
26	Locked	39	1	0
27	Locked	39	0	0
28	Locked	40	0	0
29	Locked	40	1	0
30	Locked	40	2	0
31	Locked	40	0	0

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

0	49600000	43.3	5120	QAM 64	9
1	43100000	43	5120	QAM 64	10
2	36600000	42.5	5120	QAM 64	11
3	30100000	42.3	5120	QAM 64	12
4	23600000	42.3	5120	QAM 64	13

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

0	ATDMA	0	0	0	0
1	ATDMA	0	0	0	0
2	ATDMA	0	0	0	0
3	ATDMA	0	0	0	0
4	ATDMA	0	0	0	0

General Configuration

Network accessMaximum Number of CPEsBaseline PrivacyDOCSIS ModeConfig file

Allowed

1

Enabled

3.1

;kfoA,.iyewrkldJKDHSUBsgv

Primary Downstream Service Flow

SFIDMax Traffic RateMax Traffic BurstMin Traffic Rate

29502

575000085 bps

42600bytes

0 bps

Primary Upstream Service Flow

SFIDMax Traffic RateMax Traffic BurstMin Traffic RateMax Concatenated BurstScheduling Type

26108

55000085 bps

42600bytes

0 bps

42600bytes

Best Effort

Network Log

Time Priority Description

26-09-2023 21:37:00	warning	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
26-09-2023 21:37:00	warning	Dynamic Range Window violation
26-09-2023 20:29:27	warning	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
26-09-2023 20:29:27	warning	Dynamic Range Window violation
26-09-2023 18:18:59	warning	Dynamic Range Window violation
26-09-2023 18:18:59	warning	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
26-09-2023 13:52:53	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
26-09-2023 13:52:45	critical	16 consecutive T3 timeouts while trying to range on upstream channel 8;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
26-09-2023 13:52:45	critical	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
26-09-2023 13:48:32	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
26-09-2023 13:46:52	warning	Dynamic Range Window violation
26-09-2023 13:46:52	warning	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
26-09-2023 12:40:18	warning	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
26-09-2023 12:40:18	warning	Dynamic Range Window violation
25-09-2023 21:13:07	notice	CM-STATUS message sent. Event Type Code: 3; Chan ID: N/A; DSID: 709050; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-09-2023 21:12:51	warning	Unicast DSID PSN startup error
25-09-2023 21:12:37	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-09-2023 21:12:37	notice	US profile assignment change. US Chan ID: 14; Previous Profile: 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-09-2023 21:12:34	notice	REGISTRATION COMPLETE - Waiting for Operational status
25-09-2023 21:12:28	warning	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-09-2023 21:12:28	warning	Dynamic Range Window violation
25-09-2023 21:12:27	warning	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-09-2023 21:12:27	warning	Dynamic Range Window violation
25-09-2023 21:12:27	warning	Dynamic Range Window violation
25-09-2023 21:12:27	warning	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-09-2023 21:12:27	warning	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-09-2023 21:12:27	warning	Dynamic Range Window violation
25-09-2023 21:12:27	warning	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-09-2023 21:12:27	warning	Dynamic Range Window violation
25-09-2023 21:12:27	warning	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-09-2023 21:12:27	warning	REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
25-09-2023 21:12:27	warning	Dynamic Range Window violation

[jk1990]

This has been a problem for over a year and nobody seems to be admitting the issue for whatever reason.

I do have a fix that works for me, probably not "officially supported" but I disagree that the number of devices is too much for a isp provided router to handle. BT, and Sky's kit worked fine same number. Anyway here goes. 

1. Wi-Fi Challenges:

A. WPA3: Whilst the hub allows selection of WPA3, in the source code "utilities.js" there is indeed only a mapping of WPA and WPA2 modes to the relevant security settings for the API to pickup. Hence, WPA3 mode seems to be a repeated failure. No surprise here given the coding.

Avoid using WPA3 as it will not work.

B. There is also an issue of "the disappearing Wi-Fi" - where some devices do not see the WiFi at all (e.g. my HP desktop) . Remedy seems to be setting wireless mode to 802.11b/g/n/ax from 802.11g/n/ax. 

2. DHCP Challenges: 

Whilst the hub can support 200+ devices per the DHCP range, the DHCP server seems to crash with more than 15 or so (approximate) devices connected. Remedy: 

a. Allocate devices as reserved under http://192.168.0.1/?page=settings%2Fdhcp

Once you hit 32 it will say you can no longer add any more.

So delete one, meaning there are 31 reserved.

Then I used BURP suite (free download) to add the rest.

Once downloaded, go to Proxy - Intercept - and click Open Browser 

Go to http://192.168.0.1/?page=settings%2Fdhcp
Add 1 more device, bringing your total to 32.#
Apply this.

In the BURP tool click on HTTP History and you will see there is one line item with a method "PUT" at URL /rest/v1/network/reservedipaddresses.

Right click it and send to repeater
Modify the MAC here to be the new devices MAC, and the IP to be the desired IP reservation.
Hit Send.

Refresh http://192.168.0.1/?page=settings%2Fdhcp - does it show the extra devices reserved above 32?
If so, keep going!

With this set, you can get 60+ devices working on the Hub 5 in router mode with no crashing. For homes with a large number of devices, this is the only way I have found to ensure stability.

I keep everything in the reservation excluding roaming stuff such as a friend visiting.

Good luck, I personally would struggle to buy an AX router myself right now. I have a rpi for something else and they are also a pretty penny due to stock limitations so I do not want to use one for DHCP. 

[Client62]

The Downstream Power Levels have some channels over the 10 dBmV maximum.

HUB Signal Level Checks

Via http://192.168.0.1/ connect to the Hub in Router mode, do not login in, scroll down to "Check router status"     Use http://192.168.100.1/ for a Hub in Modem mode

Using the Hub's "Check router status" tabs check the Downstream and Upstream power levels are in spec.

Downstream Power Levels of -7 to +7 dBmV are preferred, +10dBmV is the max acceptable, with a SNR of 33dB or higher across all DOCSIS 3.0 channels. Rising error counts across many channels is a current service noise fault.

Upstream Power Levels of 35 to 49 dBmV are preferred, with QAM 64 Modulation mode across all four to six DOCSIS 3.0 channels.  Seeing QAM 32/16 is a current service noise fault.

[jk1990]

+1 was editing my reply to say the same. Specifically these seem to be out of range:

26	339000000	10	39	QAM 256	26
27	347000000	10.1	39	QAM 256	27
28	355000000	10	40	QAM 256	28
29	363000000	10.2	40	QAM 256	29
30	371000000	10.4	40	QAM 256	30
31	379000000	10.7	40	QAM 256	31