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story category Comcast DHCP Outage
Provisioning systems offline
(old news - 09:04AM Tuesday Nov 14 2006)
tags: cable · trouble
A Comcast technician writes in: "Do NOT reset your equipment right now or you will get a 169 IP address from Comcast. Provisioning and DHCP have been down since yesterday afternoon and looks like will be down most of the morning." There's some additional discussion on this front in our Comcast forum.

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Forums » Comcast DHCP Outage
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Post a:

fonzbear2000
Premium
join:2005-08-09
Saint Paul, MN

i'm confused

is a 169 IP a bad thing?
Cyberguru

join:2005-06-09
Phoenix, AZ

Re: i'm confused

a 169 ip address is assigned by windows...LOL Comcast wouldn't and couldn't send you one. The tech is very confused...

Also, if the DHCP server was down, they couldn't send you anything....LOL

Stevie Nicks

@ameritech.net

Re: i'm confused

said by Cyberguru See Profile :

The tech is very confused...
That's their normal state...when in doubt, guess.

TraumaJunkie
Premium
join:2004-03-05
Knoxville, TN

said by Cyberguru See Profile :

a 169 ip address is assigned by windows...LOL Comcast wouldn't and couldn't send you one. The tech is very confused...

Also, if the DHCP server was down, they couldn't send you anything....LOL
No you are confused. Anyone who know even a crumb about Windows and networking knows that if the DHCP server is unable to assign a public internet IP address then Windows assigns an internal private IP addrfess, thus the 169 IP address. The Comcast technician was correct...no matter what is going on DO NOT power cycle your modem or you will lose the Comcast IP if the DHCP servers are down.
--
I'm not really sure what I am doing, but I'm doing it anyway!
Cyberguru

join:2005-06-09
Phoenix, AZ

Re: i'm confused

Did you not read my answer?

Also you contridicted your self...LOL

The tech said that Comcast DHCP would assign a 169 address and it does not. Windows does as you also stated...

Moron...
Justin413

join:2003-07-22
Methuen, MA
yes thats a windows default ip address. you will not have a connection

DriveByTroll

@whirlpool.com
»www.netdummy.net/privateip.html
muecker

join:2003-07-20
Littleton, CO
Not all 169 addresses are 'bad' or non-routable. But, in this case, it is.

click_310
Eat my shorts

join:2002-12-06
Savannah, GA
169 IP will give you the clap

battleop

join:2005-09-28
00000
Yea, It means your PC is directly connected to the great spam machine.

ncherry
Premium
join:2003-07-13
Monroe Township, NJ
·Comcast

Not so MS as a standard ...

Actually it's not a 'Windows' default as much as it is the auto-config protocol (»www.rfc-editor.org/rfc/rfc3330.txt for special addresses and »www.ietf.org/rfc/rfc3927.txt Link-Local). It just happens to be that MS is one of the Authors and uses it heavily.

Titus Pullo
I came, I saw, I slept

join:2004-06-26
·Embarq

I've never understood

why some techs hate this 'feature' so much. I base this on (A) the fact that it can be turned off via windows w/a registry hack, and (B) it enables a subnet to communicate machine to machine when a DHCP server is down. Even my network+ instructor hated the concept of APIPA. Know what it is and then either use it or turn it off.
--
"I am not young enough to know everything."
Oscar Wilde

sweintz
Premium
join:2002-03-01
Hamden, CT

Re: I've never understood

said by Titus Pullo See Profile :

why some techs hate this 'feature' so much. I base this on (A) the fact that it can be turned off via windows w/a registry hack, and (B) it enables a subnet to communicate machine to machine when a DHCP server is down. Even my network+ instructor hated the concept of APIPA. Know what it is and then either use it or turn it off.
The hatred comes form administering large private nets, without DHCP, or with DHCP reservations and no leases, etc. It's annoying to get BS arps coming from 169.xx.xx.xx from boxes that some clooless users decides to plug into your network...

joshuapat

join:2002-01-04
Saint Paul, MN
clubs:


1 edit

It's been down longer than that

I came home from a weekend on the east coast Sunday and couldn't get online, kept pulling a 169.x IP address. After a call to tech support I was told I had a bad modem and should exchange it on Monday. When I got home with the new modem that afternoon it wouldn't even sync. Hopefully this gets fixed quickly, kinda hard to work from home when you can't VPN into your corporate network.

Edit: Can't spell today

pnh102
Reptiles Are Cuddly And Pretty
Premium
join:2002-05-02
Mount Airy, MD

Question

What would happen if you just hard-coded the valid IP address you previously had into the router as a static IP?
--
Only SHATNER is Kirk.

elios

join:2005-11-15
Springfield, MO

Re: Question

it should work but if you have an IP just check when your DHCP lease is up you should be ok till then
muecker

join:2003-07-20
Littleton, CO

Re: Question

The cable modem also gets an IP address from DHCP. So, if it has lost its IP and it can't complete DHCP then it will not be able to bridge the traffic. So, in this case, hard coding your IP address into your computer would not work if your modem does not have an IP.

This problem is still occuring or is it resolved? Not much clarification on that aspect...

moby866
Premium
join:2000-10-07
Above you

Good to see

Its good to see that Comcast is on top of things. Now if they could just fix it....

TraumaJunkie
Premium
join:2004-03-05
Knoxville, TN

Re: Good to see

said by moby866 See Profile :

Its good to see that Comcast is on top of things. Now if they could just fix it....
Servers are back up but limping along. Bad SCSI equip. found in the DHCP routers that need replacing. All uneccessary processes have been pulled offline until all equip. is back up and confirmed working without latency or possibility of causing further outages.
--
I'm not really sure what I am doing, but I'm doing it anyway!
btmoore

join:2000-04-21
Oakland, CA

I love static

This is why true static address should always be option providers offer. This is why I won't touch any dynamic or even sticky service. I don't trust any provider to when it comes to my device configurations. I prefer them to just to keep their circuits and routers up.
lightzout
Premium
join:2005-07-29
San Anselmo, CA

Re: I love static

Comcast does offer fixed ip for home offices in lower priced business packages but I think it starts at around $100/month. I looked into it for my wifes office but it didnt seem to offer anything other than a fixed ip for the most part. I am not knowledgeable about dhcp but something tells me a fixed address is no safeguard against dhcp or other large network issues. Comcast is the only show in town and they are better than @home or att were for reliability so I cant be too ungrateful. I did put my modem and router on their own power backup for the inevitable PG&E outages this winter.

swintec
Premium
join:2003-12-19
Alfred, ME
Even with static you are still connected to the DHCP server, you will just be given the same address. So either way, if its down it would effect you still.

rob_in_chatt
Premium
join:2004-09-17
Chattanooga, TN

outage

Thanks Comcast!

BlitzenZeus
Burnt Out Cynic
Premium,MVM
join:2000-01-13
Beaverton, OR
·Verizon FIOS
·Verizon Online DSL

This is news?

Years ago when I had @Home, and ATT Broadband both providers had issues with dhcp, and dns so I had two network cards on two different configurations, one on static, another on dhcp.... I ended up using the static configuration very frequently, and that was on top of serious packet loss they said was not a problem....
--
My hourly rates:
$25 per hour.
$35 per hour if you want to watch.
$45 per hour if you want to help.
$75 per hour if you tried to fix it, and failed.
You can change ideas, but its harder to change screwed up beliefs. (Religion)

joe40

join:2005-11-26
Danbury, CT

Re: This is news?

it been longer than two day
i been having that issue for a week now.
modem stay connected but when lease get renewed, gone

CableTool
Poorly Representing MYSELF.
Premium
join:2004-11-12

Re: This is news?

You have a very different issue.
Forums » Comcast DHCP Outage


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