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Super Hub 2ac needs rebooting frequently

On about a weekly basis our super hub needs to be rebooted to connect back to the internet. Each time this happens I get a network log that looks like this ...

03/03/2018

22:57:33 GMT

68010400

DHCP REBIND WARNING - Field invalid in response

03/03/2018

22:56:35 GMT

68010100

DHCP RENEW sent - No response for IPv4

03/03/2018

22:55:40 GMT

68010100

DHCP RENEW sent - No response for IPv4

03/03/2018

22:53:49 GMT

68010100

DHCP RENEW sent - No response for IPv4

03/03/2018

22:50:08 GMT

68010100

DHCP RENEW sent - No response for IPv4

03/03/2018

22:42:44 GMT

68010100

DHCP RENEW sent - No response for IPv4

03/03/2018

22:27:58 GMT

68010100

DHCP RENEW sent - No response for IPv4

03/03/2018

21:58:26 GMT

68010100

DHCP RENEW sent - No response for IPv4

03/03/2018

20:59:22 GMT

68010100

DHCP RENEW sent - No response for IPv4

03/03/2018

19:01:15 GMT

68010100

DHCP RENEW sent - No response for IPv4

03/03/2018

15:05:00 GMT

68010100

DHCP RENEW sent - No response for IPv4

03/03/2018

07:12:30 GMT

68010100

DHCP RENEW sent - No response for IPv4

02/03/2018

15:27:29 GMT

68010100

DHCP RENEW sent - No response for IPv4

01/03/2018

20:37:09 GMT

82000200

No Ranging Response received - T3 time-out

28/02/2018

16:20:04 GMT

82000200

No Ranging Response received - T3 time-out

 

Any thoughts on how to fix this?

Thanks

Jos

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Alessandro Volta
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Message 2 of 21
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Re: Super Hub 2ac needs rebooting frequently

Post you up/down stream stats, things certainly seem amiss.


Tudor
There are 10 types of people: those who understand binary and those who don't and F people out of 10 who do not understand hexadecimal c1a2a285948293859940d9a49385a2
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Re: Super Hub 2ac needs rebooting frequently

 
Downstream Channels      
Lock StatusChannel IDFrequencyModulationRx PowerRxMERPre RS ErrorsPost RS Errors
Locked1139000000 Hz256 QAM8.1 dBmV 37.1 dB3310312
Locked2147000000 Hz256 QAM7.6 dBmV 36.8 dB3508305
Locked3155000000 Hz256 QAM5.9 dBmV 37.1 dB655290
Locked4163000000 Hz256 QAM5.8 dBmV 37.1 dB558319
Locked5171000000 Hz256 QAM6.2 dBmV 37.4 dB307292
Locked6179000000 Hz256 QAM6.4 dBmV 37.6 dB336333
Locked7187000000 Hz256 QAM5.9 dBmV 37.4 dB303301
Locked8195000000 Hz256 QAM5.7 dBmV 37.4 dB292279

 

Upstream Channels   
Lock StatusChannel IDFrequencyModulationTx PowerModeChannel BandwidthSymbol Rate
Locked6839400000 HzATDMA44.3 dBmV32QAM6400000 Hz5120 Ksym/sec
Locked7025800000 HzATDMA43.3 dBmV16QAM6400000 Hz5120 Ksym/sec
NotLocked00 Hz 0 dBmV  0 Ksym/sec
NotLocked00 Hz 0 dBmV  0 Ksym/sec
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Alessandro Volta
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Message 4 of 21
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Re: Super Hub 2ac needs rebooting frequently


@josmartinwrote:

On about a weekly basis our super hub needs to be rebooted to connect back to the internet. Each time this happens I get a network log that looks like this ...

.....

Any thoughts on how to fix this?

 

Network Log REBIND+ 12 x RENEW stanza's for the CM Lease (DHCP) are typical for SH2AC /ModemMode (dependent on firmware version?  )  

Post the firmware version (on Stats page) and also the Tick counters you'll find near upstream stats as a few T3's are insignificant.  

Differing (non optimal 64)QAM on U/S channels may need Level2/ForumTeam to check Upstream RS for FEC/SNR issues.

If you're actually in ModemMode (and not default RouterMode) then you need to elaborate on all end devices/Routers and potentially diagnose with single PC cabled to Hub.   

Regards Tony
"Life is a Binary Inspired Turing Computed Hologram"(don't PM or @Mention me - in case ignoring you offends)
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Message 5 of 21
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Re: Super Hub 2ac needs rebooting frequently

Stats:

Information

Standard Specification CompliantEuroDOCSIS 3.0 Compliant
Serial Number483149WA112AB
Hardware Version1.03
Software VersionV2.01.12
CM CertificateInstalled

 

Current Modem Init Stats (after reboot 2 days ago)

Modem InitialisationStage Status

Downstream AcquisitionLocked
Primary Frequency139000000 Hz
DHCPDone
TFTPDone
Time Of Day08:34:39 GMT
SecurityBPI+
Counters T1,T2,T3,T4,Sync,Resets000,000,004,000,000,000

 

I'm using RouterMode not ModemMode - as a router this device is ONLY connected to my internal OpenWRT router where I run my own firewall and other routing software. All TCP and UDP ports are forwarded to my internal router.

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Message 6 of 21
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Re: Super Hub 2ac needs rebooting frequently

And it goes down again ...

 

My Broadband Ping - Burwell
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Message 7 of 21
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Re: Super Hub 2ac needs rebooting frequently

Is your OpenWRT router's DHCP server enabled? If so, your hub must be configured to be in modem mode.

--
Hub 3.0, TP-Link Archer C8, TP-Link TL-SG1008D 8-port gigabit switch, V6
My Broadband Ping - Roger's VM Broadband Connection
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Message 8 of 21
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Re: Super Hub 2ac needs rebooting frequently

The super hub is connected to my OpenWRT router WAN port (which therefore pick's up it's IP address using DHCP from the superhub). From the super hub's perspective my OpenWRT router is just an attached network device. All the rest of my network is then attached to the OpenWRT router. This works just fine except when the Super Hub cannot get it's own WAN DHCP-provided IP address. The problem is not with the mode of the Super Hub router, but with the fact that it cannot get an external IP address from virgin media via DHCP. Since the OpenWRT router ONLY provides DHCP to its LAN ports and not its WAN port (which is what is connected to the Super Hub) the OpenWRT router is not involved in this exchange.

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Message 9 of 21
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Re: Super Hub 2ac needs rebooting frequently

There could be a problem with your hub.

As for your configuration: as your router is a DHCP server, then you need either of these setups:

1. Hub to bridge to your router by being in modem mode.

2. Router to be on a different IP segment to hub which is still in router mode.

--
Hub 3.0, TP-Link Archer C8, TP-Link TL-SG1008D 8-port gigabit switch, V6
My Broadband Ping - Roger's VM Broadband Connection
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Message 10 of 21
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Re: Super Hub 2ac needs rebooting frequently

Option 2 is how my networking is configured: 

The super Hub runs the 192.168.0.* subnet and my OpenWRT router runs the 192.168.10.* subnet. Everything works fine until the Superhub fails to get an IP address from virgin media.

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