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How To Turn Off Mac Filtering On Xfinity Router

nivar
join:2006-01-06
Bremerton, WA

Member

Comcast filtering MAC addresses

Greetings all,

History:
Last Friday my home network went off-line for the showtime time in 9 months for no apparent reason. Afterwards a hour or and so of diagnostics, reboots, restarts, etc... I continued my laptop directly to the Comcast modem and found out that my IP Address changed for the first time in over a yr. Non a big deal, later all that is what DHCP is suppose to do.

However, I was unable to become a IP address into my router, simply my laptop tin can get and IP merely fine. I cloned my MAC address from my laptop to the router and I got a IP instantly, merely if I turn off cloning I loose the IP address. I swapped from my Cisco router to a Linksys, same affair occurred. I swapped from my Linksys to and former D-link same thing occurred. I tried cloning my Desktop computer'due south MAC and I was unable to get a IP from Comcast. We tried both of my room-mates computers MAC's and those besides failed.

I contacted Comcast and explained the trouble that the router was not being issued an IP address and that I couldn't become online. They started in with the whole "did you restart your router? Have you changed your configurations?" blah blah blah. I told them it worked simply fine before concluding Friday when I was issued a new IP address via DHCP. And I explained that I could get online if I cloned my Laptops MAC into the router. They told me that was what I was suppose to practise. I told them that I didn't want to do that because I didn't want to take THAT MAC accost blocked likewise considering it was the simply one working. They just told me that I would have to contact their abode networking sectionalisation. Who appearently is not available for comment (well at least they dont reply their phone.)

Problem: Currently I am continued to the cyberspace using my Laptop'south MAC... simply now, I cannot connect my Laptop via wired connection because of conflicts betwixt my laptops burned in MAC and my routers cloned MAC.

Question: Conspicuously Comcast is doing some serious MAC address filtering. So how the hell do I get a MAC accost that will allow me an IP address from Comcast, and allow my Laptop to connect to the network wired then I can transfer files to and from my desktop?


gdio53
join:2000-07-30
Feeding Hills, MA

gdio53

Member

The modem will remember the last device plugged in, and y'all're simply allowed 1 MAC, so you'll demand to clear the modem of the laptop MAC
Power off the modem and disconnect whatsoever devices plugged into it.
Wait 1 minute before restoring power to the modem.
Plug in your router.
Reconnect your other devices to the router. You lot should have an IP now.
If y'all don't, it could be that the router is bad, echo the ability off procedure trying some other router.


beerbum
Premium Member
bring together:2000-05-06
behind you..

Motorola MB8600
ARRIS TG862
Asus RT-AC5300

beerbum to nivar

Premium Member

to nivar

1) shut down all PC's, shut off router, shut off modem (if emta remove battery likewise)

2) plug router'south ethernet into modem
3) connect PC(s) to router
4) plow on modem, await for sync
5) plow on router
half-dozen) turn on PC(south)

No cloning needed, whenever you switch devices continued to router you need to plow off and restart modem, otherwise information technology will not recognize the "new" device.

optional: instead of using dhcp, set your pc's to utilise a static address, commonly 192.168.i.x with the gateway 192.168.1.one (check router documentation since some use 192.169.0.ten instead of 1.x).


JahsDisciple
Living my life like it's gilded
Premium Member
join:2007-07-07
Baltimore, MD

JahsDisciple

Premium Member

said by beerbum:

ane) shut down all PC's, shut off router, shut off modem (if emta remove bombardment also)

2) plug router's ethernet into modem
three) connect PC(south) to router
four) turn on modem, wait for sync
five) turn on router
half dozen) plow on PC(s)

No cloning needed, whenever yous switch devices connected to router you need to plow off and restart modem, otherwise it will not recognize the "new" device.

optional: instead of using dhcp, set your pc's to use a static accost, usually 192.168.one.x with the gateway 192.168.1.1 (check router documentation since some use 192.169.0.x instead of one.x).

agreed. but if an emta, y'all shouldnt have to take out the battery. there's a reset button you lot can concur in for a few seconds and then await for it to kick back upwards before booting upwardly the router.

Kearnstd
Space Elf
Premium Member
join:2002-01-22
Mullica Hill, NJ

Kearnstd

Premium Fellow member

infact information technology is suggestted that the customer never remove the battery. that reset push on an EMTA is ment for the causal resets.

ats
join:2008-11-14
Vallejo, CA

ats to JahsDisciple

Fellow member

to JahsDisciple

resetting the emta with the reset button should be the last resort crusade by doing that,the emta resets to the original factory config and any updates on the firmware that were downloaded will exist erased.

yurkinator
join:2007-07-xxx
Newark, DE

yurkinator

Member

I have never seen an MTA lose firmware updates when reseting it.

nivar
join:2006-01-06
Bremerton, WA

nivar

Fellow member

That did the pull a fast one on. Information technology was the battery. I didn't even know that modem had 1. In one case I pulled the battery, unplugged the thing and reset everything, my router was able to get dorsum online all on its own.

Because Comcast installed the modem, I didn't get whatever instruction manual, so I had cipher to refer to, but appearantly the affair has a battery that will final for viii hours or so, then that my phones will work for a while in the event of power outage.

I find it disturbing and slightly alarming that the Comcast tech I talked to, didn't know to pull the bombardment, or that pulling the battery was the solution.


dadkins
Tin you do Blu?
MVM
join:2003-09-26
Hercules, CA


2 edits

dadkins to ats

MVM

to ats

said by ats:

resetting the emta with the reset button should be the last resort crusade by doing that,the emta resets to the original factory config and whatever updates on the firmware that were downloaded will be erased.

Electric current Firmware:

Firmware Build and Revisions
Firmware Proper noun: TS050237C_112907_MODEL_4_5_6
Firmware Build Time: Thu November 29 17:03:00 EST 2007

Reset, BRB

EDIT: Held Reset button for 20 seconds - for kicks!

Now current firmware:

Firmware Build and Revisions
Firmware Name: TS050237C_112907_MODEL_4_5_6
Firmware Build Fourth dimension: Thu Nov 29 17:03:00 EST 2007

No change.

Worst case I have seen, personally, when bombardment is removed - you may have to reset anyways to get telemetry back on the battery.

nivar
bring together:2006-01-06
Bremerton, WA

nivar

Fellow member

On a different, merely related annotation: Anyone have whatsoever idea why the modem decided to dump or block the MAC address originally?

I wouldn't retrieve that an IP change via DHCP would have anything to practice with that.


dadkins
Can you lot do Blu?
MVM
join:2003-09-26
Hercules, CA

dadkins

MVM

Modems will commonly remember the last particular's MAC address that was connected.
If you change items without resetting/powercycling, the MAC will be dissimilar than what is in memory and connectivity volition be denied.

Resetting or powercycling will erase the memory and information technology will have to remember the new particular.

Should work fine then.

nivar
bring together:2006-01-06
Bremerton, WA

nivar

Member

I was in class at the college when my IP address changed here at the house. There was nobody home to bike the power on either the router or the modem. Withal information technology blocked the MAC address and wouldn't give a new IP address. Information technology picked upwards my laptops MAC address hours after the organisation was effected, and so locked that MAC in and wouldn't accept whatever other.

And so why did it drop and block my router MAC in the first place?

I am but trying to understand everything that happened and so that I can exist prepared for the next time things go to hell.

jabuqua
bring together:2004-10-ten
Beverly Hills, CA

jabuqua to ats

Member

to ats

said by ats:

resetting the emta with the reset push should be the last resort cause by doing that,the emta resets to the original factory config and whatever updates on the firmware that were downloaded will be erased.

You got that reversed. Equally was already stated, the reset button must be used for resetting when switching devices. The concluding resort is to remove the bombardment & powercycling. Y'all're only advised to practice that once everything else fails due to the run a risk of loosing the dial tone since the modem does a more extensive check during the boot up sequence when the battery has been removed.

Nivar: WA has been undergoing the whole iii.0 upgrade then this might have been related... ?

nivar
join:2006-01-06
Bremerton, WA

nivar

Fellow member

Ah... upgrade.

Upgrade = instability and wackyness ensues

Got it.

Thank you alot everyone for your help.


EG
The wings of beloved
Premium Fellow member
join:2006-11-18
Wedlock, NJ

EG to beerbum

Premium Fellow member

to beerbum

said past beerbum:

whenever y'all switch devices connected to *router* you demand to plow off and restart modem, otherwise it volition not recognize the "new" device.

Do you mean the *modem* hither ?


dadkins
Can you do Blu?
MVM
join:2003-09-26
Hercules, CA

dadkins to nivar

MVM

to nivar

Comcast tin reset modems from their side - usually.
A power "hiccup" could have occurred.
Unknown.

Either style, a reset or powercycle would have stock-still it(still will if it ever happens again).

You lot Take TO ERASE THE MEMORY or no other machine's MAC will be accepted.
Resetting or powercycling is the only fashion to erase the retentivity.

Kearnstd
Space Elf
Premium Member
join:2002-01-22
Mullica Loma, NJ

Kearnstd

Premium Member

said by Kearnstd:

infact it is suggestted that the customer never remove the battery. that reset push button on an EMTA is ment for the causal resets.

it would just redownload the right firmware if that happened.

calathea
join:2001-12-29
Scio, OR

calathea to nivar

Member

to nivar

Hi Nivar, I posted this as a new mail service before I saw yours -- information technology sounds similar the same thing and nosotros are both in the Pacific Northwest. --

We have the Comcast Triple Play. Information technology has been reliable since nosotros got it several months agone. Today the internet connexion suddenly disappeared. I will not diameter you lot with the accident-by-blow detail of the 2 calls to Comcast and the 27 shutdown/startups of the PC, nor the myriad router ability cycles and resets. Of the 2 Comcast excuses, 1 was quondam "your router messed up" and one was new "your PC booted up too fast."

I had to call Comcast back on a cell phone because we have phone service from them. In guild to get the PC to connect, they had to reset their modem box from their side, which would have ended the phone call. Afterward they did that, the directly connection to the PC started working. But the router still couldn't go an IP address from Comcast.

What I ended doing was to upgrade the router firmware, reset it back to factory defaults, and clone the MAC accost. Then it finally started working. It took half a day. The exercise likewise included my married man going out and ownership a new router because I had despaired of ever getting it working once more, so taking the new router back because I had fixed information technology by the time he got home.

We speculate that Comcast reconfigured something, then somehow wouldn't reprovision the router. It had to reprovision the PC straight. Will never know for sure.


asdMD29455
@comcast.net

asdMD29455 to nivar

Anon

to nivar

well this is interesting indeed. Yesterday my comcast connectedness exhibited the aforementioned symptoms. I called comcast, no help. When plugging the cable modem directly into the calculator worked, comcast alleged their duty fulfilled. However, our router couldnt get a connection. and so thinking nosotros had a bad router, we bought a new WRT54G... same thing. and then we replaced the motorola surfboard modem that comcast gave usa with an RCA i from comcast... same thing. Simply cloning the mac accost of a computer on the network solved the trouble. our iii macs, 2 windows machines, and 2 linux machines all got their cyberspace back at once.

Weird... same place, same time, same problem. I concord... comcast changed something somewhere and things went haywire...

How To Turn Off Mac Filtering On Xfinity Router,

Source: https://www.dslreports.com/forum/r21468102-Comcast-filtering-MAC-addresses

Posted by: fernandezbeadis.blogspot.com

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