Cable Forum - What else could it be?

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Re: What else could it be?

00-02-06-5B-17-2B that is card Mac address

Re: What else could it be?

just to confirm our on a 20 meg connection?

and could you please confirm how often the connection drops, and the last time you saw it drop.

SNR on the interface is dropping now and again, which could cause your modem to need to re-sync, but I'd need to know if the two things tie in or not

---------- Post added at 16:51 ---------- Previous post was at 16:33 ----------

cwma-cmts-07:7A#show cable flap-list | i
MAC ID CableIF Hit Miss Ins Pow Rng Flap Type Time
XXXX.XXX.XXXX 5/0 U0 53513 607 5 6 44 55 Rng MON OCT 05 14:42:02 2009

Hi there, here are some stats from your modem - I've hidden the mac address for security reasons - You modem appears to be flapping / ranging a lot

suggests either faulty modem or loose connection / damaged cabling / f connector etc - essentially it's likely to be a physical issue.

Id get a tech out to check physical connections and swap modem, probably suggest he plug a modem in at the cab to decide if a re-pull is required.

Re: What else could it be?

all the connections have been tested in the cabenet, 2 techs have been out, modem has been changed twice in past 3 months.

I really dont think a repull is an option to flats.

Re: What else could it be?

hmmm, do you have any internal splitters or anything in the property? ie so you can have a digi TV and a modem

if so try screwing the modem into the feed of you DP , rather then off the splitter. They can cause noise on the line and this in turn can cause the modem to range to try and get a good lock on

Re: What else could it be?

all i have is what Virgin fitted, theres only one splitter i know of and thats the one that splits in the connections for TV and Modem which is in a seperate room.

Re: What else could it be?

Quote:

Originally Posted by Welshchris (Post 34884258)

well the engineer here rang a person who is part of the network team here in swansea who is a friend of his and is also on this site and i am in contact with myself and have been sending him my modem logs. He said that he has been passing the logs on further up the chain as its a DCHP server issue and the people further up the chain claim its impossible and they r stuck in a deadlock while im having to put up with a connection that has more ups and downs than Monica Lewinskis knickers!

Hahahaha legendary. Absolutely priceless. Clearly a server in a data centre is affecting your power levels. Makes perfect sense to me :D

Re: What else could it be?

Quote:

Originally Posted by Broadbandings (Post 34884382)

Hahahaha legendary. Absolutely priceless. Clearly a server in a data centre is affecting your power levels. Makes perfect sense to me :D

who said the person is in a data center?

---------- Post added at 19:55 ---------- Previous post was at 19:54 ----------

Quote:

Originally Posted by bomber_g (Post 34884298)

i have just changed the splitter to see how it goes

Re: What else could it be?

Quote:

Originally Posted by Welshchris (Post 34884394)

who said the person is in a data center

I said server, so you tell me?

Re: What else could it be?

Quote:

Originally Posted by Broadbandings (Post 34884382)

Hahahaha legendary. Absolutely priceless. Clearly a server in a data centre is affecting your power levels. Makes perfect sense to me :D

thats what u said

Re: What else could it be?

Quote:

Originally Posted by Welshchris (Post 34884401)

thats what u said

Quote:

He said that he has been passing the logs on further up the chain as its a DCHP server issue and the people further up the chain claim its impossible

The people further up the chain are right, he has no idea what he's talking about but being an IT tech I'm sure you'd know that a Dynamic Host Configuration Protocol (DHCP rather than DCHP) server is absolutely nothing to do with electrical power levels on a coaxial/optical given that its' purpose in life is to hand out IP addresses.

Exactly 3 things affect power levels - modem, CMTS and the optical and coaxial network in between. The end.

Sorry to not be able to give further advice, but DHCP issues it most certainly is not. The issue is either very local to you or along the cable network somewhere, it's certainly nothing to do with a Solaris server with no awareness of the RF network.

Re: What else could it be?

Quote:

Originally Posted by Broadbandings (Post 34884445)

I do hope you're not trying to suggest a 'server' is some kind of digital waiter/waitress? I said the DHCP server was in a data centre, it's very clear the 'person' isn't else he may have a clue instead of trying to palm an RF issue off on other departments.

As I'm nice I'll clarify.

The people further up the chain are right, he has no idea what he's talking about but being an IT tech I'm sure you'd know that a Dynamic Host Configuration Protocol (DHCP rather than DCHP) server is absolutely nothing to do with electrical power levels on a coaxial/optical given that its' purpose in life is to hand out IP addresses.

Exactly 3 things affect power levels - modem, CMTS and the optical and coaxial network in between. The end.

Sorry to not be able to give further advice, but DHCP issues it most certainly is not. The issue is either very local to you or along the cable network somewhere, it's certainly nothing to do with a Solaris server with no awareness of the RF network.

Broadbandings there is a mention of CMTS in one of todays logs BUT again they claim theres no issue...

Mon Oct 05 10:39:57 2009 Mon Oct 05 10:39:57 2009 Information (7) Downstream sync ok
Mon Oct 05 10:39:57 2009 Mon Oct 05 10:39:57 2009 Information (7) locked and synced to rescue CMTS...all is well!
Mon Oct 05 10:39:57 2009 Mon Oct 05 10:39:57 2009 Information (7) Downstream sync ok
Mon Oct 05 10:39:57 2009 Mon Oct 05 10:39:57 2009 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Mon Oct 05 10:39:57 2009 Mon Oct 05 10:39:57 2009 Information (7) Downstream sync failed
Mon Oct 05 10:39:57 2009 Mon Oct 05 10:39:57 2009 Information (7) Downstream sync ok
Mon Oct 05 10:39:57 2009 Mon Oct 05 10:39:57 2009 Information (7) locked and synced to rescue CMTS...all is well!
Mon Oct 05 10:39:57 2009 Mon Oct 05 10:39:57 2009 Information (7) Downstream sync ok
Mon Oct 05 10:39:56 2009 Mon Oct 05 10:39:56 2009 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Mon Oct 05 10:39:56 2009 Mon Oct 05 10:39:56 2009 Information (7) Downstream sync failed
Mon Oct 05 10:39:30 2009 Mon Oct 05 10:39:30 2009 Information (7) Downstream sync ok
Mon Oct 05 10:39:30 2009 Mon Oct 05 10:39:30 2009 Information (7) locked and synced to rescue CMTS...all is well!
Mon Oct 05 10:39:30 2009 Mon Oct 05 10:39:30 2009 Information (7) Downstream sync ok
Mon Oct 05 10:39:29 2009 Mon Oct 05 10:39:29 2009 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Mon Oct 05 10:39:29 2009 Mon Oct 05 10:39:29 2009 Information (7) Downstream sync failed
Mon Oct 05 10:27:50 2009 Mon Oct 05 10:27:50 2009 Information (7) The s/w filename specified in the config file is the same as ...
Mon Oct 05 10:27:50 2009 Mon Oct 05 10:27:50 2009 Information (7) A software upgrade filename was specified in the config file.
Mon Oct 05 10:27:50 2009 Mon Oct 05 10:27:50 2009 Information (7) Authorized
Mon Oct 05 10:27:50 2009 Mon Oct 05 10:27:50 2009 Information (7) Registration complete!
Mon Oct 05 10:27:50 2009 Mon Oct 05 10:27:50 2009 Information (7) We registered with a DOCSIS 1.1 config file!
Mon Oct 05 10:27:50 2009 Mon Oct 05 10:27:50 2009 Information (7) Received a REG-RSP message from the CMTS...
Mon Oct 05 10:27:50 2009 Mon Oct 05 10:27:50 2009 Information (7) Sending a REG-REQ to the CMTS...
Mon Oct 05 10:27:50 2009 Mon Oct 05 10:27:50 2009 Information (7) CableModem SNMP configure complete
Mon Oct 05 10:27:49 2009 Mon Oct 05 10:27:49 2009 Information (7) IP init completed ok
Mon Oct 05 10:27:49 2009 Mon Oct 05 10:27:49 2009 Information (7) CableModem TFTP init ok
Mon Oct 05 10:27:49 2009 Mon Oct 05 10:27:49 2009 Information (7) CableModem DHCP client init ok
Mon Oct 05 10:27:49 2009 Mon Oct 05 10:27:49 2009 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Time Not Established Time Not Established Information (7) MAP w/initial maintenance region received
Time Not Established Time Not Established Information (7) Downstream sync ok
Time Not Established Time Not Established Information (7) Beginning initial ranging...
Time Not Established Time Not Established Information (7) downstream time sync acquired...
Time Not Established Time Not Established Information (7) Downstream sync ok

all i want is the problem fixed, theres only so much i can do, ive changed the splitter myself, they have tested the leads and power levels now and claim all is well, the cabinet has been tested, and they claim they CANT find a problem. While they r arguing amongst themselves what am i supposed to do with a connection that drops 7 times a day sometimes.

Re: What else could it be?

Use another provider, simples.

Re: What else could it be?

well my contract is up 3rd week in November so will be looking into another one soon.

---------- Post added at 22:13 ---------- Previous post was at 22:03 ----------

i just noticed something, everytime i download a file i get this scrolling over and over and over in my logs.....

Mon Oct 05 21:10:45 2009 Mon Oct 05 21:10:45 2009 Information (7) Downstream sync ok
Mon Oct 05 21:10:45 2009 Mon Oct 05 21:10:45 2009 Information (7) locked and synced to rescue CMTS...all is well!
Mon Oct 05 21:10:45 2009 Mon Oct 05 21:10:45 2009 Information (7) Downstream sync ok
Mon Oct 05 21:10:45 2009 Mon Oct 05 21:10:45 2009 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Mon Oct 05 21:10:45 2009 Mon Oct 05 21:10:45 2009 Information (7) Downstream sync failed
Mon Oct 05 21:10:45 2009 Mon Oct 05 21:10:45 2009 Information (7) Downstream sync ok
Mon Oct 05 21:10:45 2009 Mon Oct 05 21:10:45 2009 Information (7) locked and synced to rescue CMTS...all is well!
Mon Oct 05 21:10:44 2009 Mon Oct 05 21:10:44 2009 Information (7) Downstream sync ok
Mon Oct 05 21:10:43 2009 Mon Oct 05 21:10:43 2009 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Mon Oct 05 21:10:43 2009 Mon Oct 05 21:10:43 2009 Information (7) Downstream sync failed
Mon Oct 05 21:10:33 2009 Mon Oct 05 21:10:33 2009 Information (7) Downstream sync ok
Mon Oct 05 21:10:33 2009 Mon Oct 05 21:10:33 2009 Information (7) locked and synced to rescue CMTS...all is well!
Mon Oct 05 21:10:33 2009 Mon Oct 05 21:10:33 2009 Information (7) Downstream sync ok
Mon Oct 05 21:10:33 2009 Mon Oct 05 21:10:33 2009 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Mon Oct 05 21:10:33 2009 Mon Oct 05 21:10:33 2009 Information (7) Downstream sync failed
Mon Oct 05 21:10:33 2009 Mon Oct 05 21:10:33 2009 Information (7) Downstream sync ok
Mon Oct 05 21:10:32 2009 Mon Oct 05 21:10:32 2009 Information (7) locked and synced to rescue CMTS...all is well!
Mon Oct 05 21:10:32 2009 Mon Oct 05 21:10:32 2009 Information (7) Downstream sync ok
Mon Oct 05 21:10:31 2009 Mon Oct 05 21:10:31 2009 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Mon Oct 05 21:10:31 2009 Mon Oct 05 21:10:31 2009 Information (7) Downstream sync failed
Mon Oct 05 21:10:29 2009 Mon Oct 05 21:10:29 2009 Information (7) Downstream sync ok
Mon Oct 05 21:10:29 2009 Mon Oct 05 21:10:29 2009 Information (7) locked and synced to rescue CMTS...all is well!
Mon Oct 05 21:10:29 2009 Mon Oct 05 21:10:29 2009 Information (7) Downstream sync ok
Mon Oct 05 21:10:29 2009 Mon Oct 05 21:10:29 2009 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Mon Oct 05 21:10:29 2009 Mon Oct 05 21:10:29 2009 Information (7) Downstream sync failed
Mon Oct 05 21:10:29 2009 Mon Oct 05 21:10:29 2009 Information (7) Downstream sync ok
Mon Oct 05 21:10:29 2009 Mon Oct 05 21:10:29 2009 Information (7) locked and synced to rescue CMTS...all is well!
Mon Oct 05 21:10:29 2009 Mon Oct 05 21:10:29 2009 Information (7) Downstream sync ok
Mon Oct 05 21:10:29 2009 Mon Oct 05 21:10:29 2009 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Mon Oct 05 21:10:29 2009 Mon Oct 05 21:10:29 2009 Information (7) Downstream sync failed
Mon Oct 05 21:10:29 2009 Mon Oct 05 21:10:29 2009 Information (7) Downstream sync ok
Mon Oct 05 21:10:29 2009 Mon Oct 05 21:10:29 2009 Information (7) locked and synced to rescue CMTS...all is well!

Re: What else could it be?

Yes, you are losing downstream lock and unable to re-establish it.

Upstream isn't your only problem :)

Re: What else could it be?

its the cause and fix i want after 2 Bloody months!

i have sent out emails to a few others now in the building to see if anyone else is having a problem also.