| Author |
Message |
Morris Ebbets
Guest
|
 Posted:
Tue Oct 04, 2005 9:28 pm Post subject:
Comcast broadband, router: only one PC at a time |
|
|
Just got married and moved in with my wife, who has Comcast cable broadband.
(Had previously been on Verizon DSL.) She has a Motorola SB1500 SURFboard
cable modem and a LINKSYS BEFSR41 router; runs Windows XP Home. (Pretty
sure it's SP2.)
Looking at the quick setup guide for the router, I tried plugging my Windows
XP Home SP2 box in. Didn't work. Tried a few things, then finally got it
to work when I found that I can get one computer (but not both) running
broadband. Pattern seems to be that the one I plug into port 1 (or whatever
it's called) on the router works, but not the other.
Any suggestions on how I can get both to work simultaneously? I did some
web/USENET searches on this, and can't quite figure it out. (I went to the
admin web page for the router, and it says it's set up for 50 PCs, not
merely 1.)
TIA,
S |
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Bill M.
Guest
|
| Posted:
Tue Oct 04, 2005 10:29 pm Post subject:
Re: Comcast broadband, router: only one PC at a time |
|
|
On Tue, 4 Oct 2005 12:28:58 -0400, "Morris Ebbets"
<idontwantnospam@nospam.invalid> wrote:
| Quote: | Just got married and moved in with my wife, who has Comcast cable broadband.
(Had previously been on Verizon DSL.) She has a Motorola SB1500 SURFboard
cable modem and a LINKSYS BEFSR41 router; runs Windows XP Home. (Pretty
sure it's SP2.)
|
The cable modem is probably a SB5100, I hope. :)
| Quote: | Looking at the quick setup guide for the router, I tried plugging my Windows
XP Home SP2 box in. Didn't work. Tried a few things, then finally got it
to work when I found that I can get one computer (but not both) running
broadband. Pattern seems to be that the one I plug into port 1 (or whatever
it's called) on the router works, but not the other.
|
Not much to go on here, but the basics are that the router's Internet
port, sort of off to one side by itself, should be connected to the
cable modem, and the PC(s) should be connected to any of the ports
labeled 1-4. The PC(s) should be configured for DHCP, (easiest to get
working; you can do static IP assignment outside of the router's DHCP
range later.) Power down the cable modem, the router, and the PC(s),
then power up the cable modem and let it stabilize, power up the
router and let it stabilize, then power up one PC at a time. Make sure
there are Link lights at both ends of all live (powered up) cables.
Rule out a bad patch cable. If Port 1 works on the router, but 2-4
don't, you may have a bad router. If you have all of the necessary
Link lights, see if you can ping the LAN side of the router from the
'bad' PC, (usually at 192.168.1.1), and if that works, ping the cable
modem, (usually at 192.168.100.1). The ping results will help you
determine where to go next.
--
Bill |
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$Bill
Guest
|
| Posted:
Tue Oct 04, 2005 10:30 pm Post subject:
Re: Comcast broadband, router: only one PC at a time |
|
|
Morris Ebbets wrote:
| Quote: | Just got married and moved in with my wife, who has Comcast cable broadband.
(Had previously been on Verizon DSL.) She has a Motorola SB1500 SURFboard
cable modem and a LINKSYS BEFSR41 router; runs Windows XP Home. (Pretty
sure it's SP2.)
Looking at the quick setup guide for the router, I tried plugging my Windows
XP Home SP2 box in. Didn't work. Tried a few things, then finally got it
to work when I found that I can get one computer (but not both) running
broadband. Pattern seems to be that the one I plug into port 1 (or whatever
it's called) on the router works, but not the other.
Any suggestions on how I can get both to work simultaneously? I did some
web/USENET searches on this, and can't quite figure it out. (I went to the
admin web page for the router, and it says it's set up for 50 PCs, not
merely 1.)
|
Are you using a straight through cable or a crossover cable ?
Did you try re-booting the PC ? It should pick right up on any
of the ports. |
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Tom Stiller
Guest
|
| Posted:
Tue Oct 04, 2005 10:44 pm Post subject:
Re: Comcast broadband, router: only one PC at a time |
|
|
In article <f5y0f.77$r5.177@mencken.net.nih.gov>,
"Morris Ebbets" <idontwantnospam@nospam.invalid> wrote:
| Quote: | Just got married and moved in with my wife, who has Comcast cable broadband.
(Had previously been on Verizon DSL.) She has a Motorola SB1500 SURFboard
cable modem and a LINKSYS BEFSR41 router; runs Windows XP Home. (Pretty
sure it's SP2.)
Looking at the quick setup guide for the router, I tried plugging my Windows
XP Home SP2 box in. Didn't work. Tried a few things, then finally got it
to work when I found that I can get one computer (but not both) running
broadband. Pattern seems to be that the one I plug into port 1 (or whatever
it's called) on the router works, but not the other.
Any suggestions on how I can get both to work simultaneously? I did some
web/USENET searches on this, and can't quite figure it out. (I went to the
admin web page for the router, and it says it's set up for 50 PCs, not
merely 1.)
|
A couple of things. The cable modem should be plugged into the "WAN"
port and port 1 is connected internally, but with reversed directional
sense, to the "Uplink" port
If the router has DHCP enabled, you should configure your computers to
seek a DHCP IP assignment from IP address 192.168.1.1. If DHCP is not
enabled, manually assign the computers IP addresses in the range
192.168.1.[1..254]
You should also specify the router's address (192.168.1.1) as the DNS
server.
--
Tom Stiller
PGP fingerprint = 5108 DDB2 9761 EDE5 E7E3
7BDA 71ED 6496 99C0 C7CF |
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Bill M.
Guest
|
| Posted:
Tue Oct 04, 2005 11:02 pm Post subject:
Re: Comcast broadband, router: only one PC at a time |
|
|
On Tue, 04 Oct 2005 13:44:22 -0400, Tom Stiller
<tomstiller@comcast.net> wrote:
| Quote: | In article <f5y0f.77$r5.177@mencken.net.nih.gov>,
"Morris Ebbets" <idontwantnospam@nospam.invalid> wrote:
Just got married and moved in with my wife, who has Comcast cable broadband.
(Had previously been on Verizon DSL.) She has a Motorola SB1500 SURFboard
cable modem and a LINKSYS BEFSR41 router; runs Windows XP Home. (Pretty
sure it's SP2.)
Looking at the quick setup guide for the router, I tried plugging my Windows
XP Home SP2 box in. Didn't work. Tried a few things, then finally got it
to work when I found that I can get one computer (but not both) running
broadband. Pattern seems to be that the one I plug into port 1 (or whatever
it's called) on the router works, but not the other.
Any suggestions on how I can get both to work simultaneously? I did some
web/USENET searches on this, and can't quite figure it out. (I went to the
admin web page for the router, and it says it's set up for 50 PCs, not
merely 1.)
A couple of things. The cable modem should be plugged into the "WAN"
port and port 1 is connected internally, but with reversed directional
sense, to the "Uplink" port
|
I don't think the BEFSR41 has that relationship between Port 1 and the
WAN (Internet) port, and there is no "Uplink" port. Some older
equipment was like that, though.
| Quote: | If the router has DHCP enabled, you should configure your computers to
seek a DHCP IP assignment from IP address 192.168.1.1. If DHCP is not
enabled, manually assign the computers IP addresses in the range
192.168.1.[1..254]
|
Eek! <g> 192.168.1.1 is already in use by the router's LAN port, so
your example for the computers should be 192.168.1.[2..254].
| Quote: | You should also specify the router's address (192.168.1.1) as the DNS
server.
|
Sorry to be nit picky, I'm just trying to avoid confusion.
--
Bill |
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|
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David H. Lipman
Guest
|
| Posted:
Tue Oct 04, 2005 11:02 pm Post subject:
Re: Comcast broadband, router: only one PC at a time |
|
|
From: "Tom Stiller" <tomstiller@comcast.net>
| A couple of things. The cable modem should be plugged into the "WAN"
| port and port 1 is connected internally, but with reversed directional
| sense, to the "Uplink" port
|
| If the router has DHCP enabled, you should configure your computers to
| seek a DHCP IP assignment from IP address 192.168.1.1. If DHCP is not
| enabled, manually assign the computers IP addresses in the range
| 192.168.1.[1..254]
|
| You should also specify the router's address (192.168.1.1) as the DNS
| server.
|
| --
| Tom Stiller
|
| PGP fingerprint = 5108 DDB2 9761 EDE5 E7E3
| 7BDA 71ED 6496 99C0 C7CF
You mean the range is; 192.168.1.2 ~ 192.168.1.254 ( 192.168.1.[2..254] )
191.168.1.1 is reserved by the Router.
The Linksys BEFSR41 does not have DNS Daemon and thus 191.168.1.1 should not be entered
into the DNS settings of the platform. That should be manually entered based upon what the
Comcast segment provides or better yet, Enable DHCP on the platform such that it gets the
complete stack, including the Comcast DNS servers, via DHCP.
--
Dave
http://www.claymania.com/removal-trojan-adware.html
http://www.ik-cs.com/got-a-virus.htm |
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Tom Stiller
Guest
|
| Posted:
Tue Oct 04, 2005 11:16 pm Post subject:
Re: Comcast broadband, router: only one PC at a time |
|
|
In article <0tz0f.225$Ll2.196@trnddc04>,
"David H. Lipman" <DLipman~nospam~@Verizon.Net> wrote:
| Quote: | From: "Tom Stiller" <tomstiller@comcast.net
| A couple of things. The cable modem should be plugged into the "WAN"
| port and port 1 is connected internally, but with reversed directional
| sense, to the "Uplink" port
|
| If the router has DHCP enabled, you should configure your computers to
| seek a DHCP IP assignment from IP address 192.168.1.1. If DHCP is not
| enabled, manually assign the computers IP addresses in the range
| 192.168.1.[1..254]
|
| You should also specify the router's address (192.168.1.1) as the DNS
| server.
|
| --
| Tom Stiller
|
| PGP fingerprint = 5108 DDB2 9761 EDE5 E7E3
| 7BDA 71ED 6496 99C0 C7CF
You mean the range is; 192.168.1.2 ~ 192.168.1.254 ( 192.168.1.[2..254] )
191.168.1.1 is reserved by the Router.
|
Yep! I fumble-fingered that one.
| Quote: |
The Linksys BEFSR41 does not have DNS Daemon and thus 191.168.1.1
should not be entered into the DNS settings of the platform. That
should be manually entered based upon what the Comcast segment
provides or better yet, Enable DHCP on the platform such that it gets
the complete stack, including the Comcast DNS servers, via DHCP.
|
Well, my old BEFSR41 captures the ISP (Comcast) supplied DNS addresses.
All the computers on my local network have manually assigned IP
addresses and specify 192.168.1.1 as their DNS entry. I have no problem
resolving URLs on any of them.
--
Tom Stiller
PGP fingerprint = 5108 DDB2 9761 EDE5 E7E3
7BDA 71ED 6496 99C0 C7CF |
|
| Back to top |
|
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Morris Ebbets
Guest
|
| Posted:
Wed Oct 05, 2005 12:05 am Post subject:
Re: Comcast broadband, router: only one PC at a time |
|
|
"Bill M." <wbillups@hotmail.com> wrote in message
news:28e5k1h4sl1p2cmu076dh4k1rfq9msftj5@4ax.com...
| Quote: | On Tue, 4 Oct 2005 12:28:58 -0400, "Morris Ebbets"
idontwantnospam@nospam.invalid> wrote:
Just got married and moved in with my wife, who has Comcast cable
broadband.
(Had previously been on Verizon DSL.) She has a Motorola SB1500
SURFboard
cable modem and a LINKSYS BEFSR41 router; runs Windows XP Home. (Pretty
sure it's SP2.)
The cable modem is probably a SB5100, I hope. :)
|
Right you are.
| Quote: | Looking at the quick setup guide for the router, I tried plugging my
Windows
XP Home SP2 box in. Didn't work. Tried a few things, then finally got
it
to work when I found that I can get one computer (but not both) running
broadband. Pattern seems to be that the one I plug into port 1 (or
whatever
it's called) on the router works, but not the other.
Not much to go on here, but the basics are that the router's Internet
port, sort of off to one side by itself, should be connected to the
cable modem, and the PC(s) should be connected to any of the ports
labeled 1-4. The PC(s) should be configured for DHCP, (easiest to get
working; you can do static IP assignment outside of the router's DHCP
range later.)
|
I'm pretty sure it's not a configuration issue, because my XP box works when
hooked up to port 1, and I'm pretty sure that it's running DHCP.
| Quote: | Power down the cable modem, the router, and the PC(s),
then power up the cable modem and let it stabilize, power up the
router and let it stabilize, then power up one PC at a time. Make sure
there are Link lights at both ends of all live (powered up) cables.
|
OK. Did all that.
| Quote: | Rule out a bad patch cable.
|
Don't think it's the cable since P 1 works, but not 2-4.
| Quote: | If Port 1 works on the router, but 2-4
don't, you may have a bad router.
|
Good idea. That's my leading hypothesis right now.
| Quote: | If you have all of the necessary
Link lights, see if you can ping the LAN side of the router from the
'bad' PC, (usually at 192.168.1.1), and if that works, ping the cable
modem, (usually at 192.168.100.1). The ping results will help you
determine where to go next.
|
Forgot to do that...see my response to the entire thread for the info I
*did* gather.
|
|
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|
|
Morris Ebbets
Guest
|
| Posted:
Wed Oct 05, 2005 12:06 am Post subject:
Re: Comcast broadband, router: only one PC at a time |
|
|
"$Bill" <news@SPAMOLAtodbe.com> wrote in message
news:86SdnYudat7dId_eRVn-tg@adelphia.com...
| Quote: | Morris Ebbets wrote:
Just got married and moved in with my wife, who has Comcast cable
broadband.
(Had previously been on Verizon DSL.) She has a Motorola SB1500
SURFboard
cable modem and a LINKSYS BEFSR41 router; runs Windows XP Home. (Pretty
sure it's SP2.)
Looking at the quick setup guide for the router, I tried plugging my
Windows
XP Home SP2 box in. Didn't work. Tried a few things, then finally got
it
to work when I found that I can get one computer (but not both) running
broadband. Pattern seems to be that the one I plug into port 1 (or
whatever
it's called) on the router works, but not the other.
Any suggestions on how I can get both to work simultaneously? I did
some
web/USENET searches on this, and can't quite figure it out. (I went to
the
admin web page for the router, and it says it's set up for 50 PCs, not
merely 1.)
Are you using a straight through cable or a crossover cable ?
|
Straight.
| Quote: | Did you try re-booting the PC ? It should pick right up on any
of the ports.
|
I've cycled a number of times. Works on Port 1 but not 2-4. |
|
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|
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Morris Ebbets
Guest
|
| Posted:
Wed Oct 05, 2005 12:13 am Post subject:
Re: Comcast broadband, router: only one PC at a time |
|
|
"Morris Ebbets" <idontwantnospam@nospam.invalid> wrote in message
news:f5y0f.77$r5.177@mencken.net.nih.gov...
| Quote: | Just got married and moved in with my wife, who has Comcast cable
broadband.
(Had previously been on Verizon DSL.) She has a Motorola SB1500 SURFboard
cable modem and a LINKSYS BEFSR41 router; runs Windows XP Home. (Pretty
sure it's SP2.)
Looking at the quick setup guide for the router, I tried plugging my
Windows
XP Home SP2 box in. Didn't work. Tried a few things, then finally got it
to work when I found that I can get one computer (but not both) running
broadband. Pattern seems to be that the one I plug into port 1 (or
whatever
it's called) on the router works, but not the other.
Any suggestions on how I can get both to work simultaneously? I did some
web/USENET searches on this, and can't quite figure it out. (I went to
the
admin web page for the router, and it says it's set up for 50 PCs, not
merely 1.)
|
Thanks, all, for the kind and informative replies.
As I mentioned in some of my comments to specific replies, I tried it again,
this time only hooking up my XP box and not my wife's. (I was careful to
power everything off, then power the modem on, let it stabilize, then power
the router on, and then the PC, for each cycle.)
Things work fine when I'm connected to Port 1; they don't work when
connected to ports 2, 3, or 4.
One odd thing: on ports 2-4, while I can't download web pages, it seems I
can ping out, e.g. yahoo. The tracert to yahoo on e.g. port 4 was pretty
much the same as that on port 1 (though not quite the same; not sure if
that's because yahoo sends you to different IP addresses on a random
basis...for port 1 it went to [216.109.112.135], for port 4, to
[66.94.234.13]).
The output of ipconfig /all was the same for all four ports (except for the
specifics of the DHCP lease). Here it is for port 1:
Windows IP Configuration
Host Name . . . . . . . . . . . . : apollo
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : hsd1.md.comcast.net.
Ethernet adapter Local Area Connection 2:
Connection-specific DNS Suffix . : hsd1.md.comcast.net.
Description . . . . . . . . . . . : NETGEAR FA311 Fast Ethernet
Adapter
Physical Address. . . . . . . . . : 00-02-E3-24-AC-B3
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.1.100
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 68.87.64.196
68.87.66.196
68.48.0.13
Lease Obtained. . . . . . . . . . : Tuesday, October 04, 2005
2:26:09 PM
Lease Expires . . . . . . . . . . : Wednesday, October 05, 2005
2:26:09 PM
At this point my best guess is that which one of you suggested, namely, a
bad router...
Any further thoughts?
Thanks again,
S
|
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|
|
David H. Lipman
Guest
|
| Posted:
Wed Oct 05, 2005 12:46 am Post subject:
Re: Comcast broadband, router: only one PC at a time |
|
|
From: "Tom Stiller" <tomstiller@comcast.net>
|
| Well, my old BEFSR41 captures the ISP (Comcast) supplied DNS addresses.
| All the computers on my local network have manually assigned IP
| addresses and specify 192.168.1.1 as their DNS entry. I have no problem
| resolving URLs on any of them.
|
| --
| Tom Stiller
|
| PGP fingerprint = 5108 DDB2 9761 EDE5 E7E3
| 7BDA 71ED 6496 99C0 C7CF
Well Tom I tested it on my BEFSR81 and you are correct !
That is news to me and I have installed too many BEFSR41 (Model v1, v2 and v3) to keep track
of ;-)
Thanx for the correction.
Mea culpa !
--
Dave
http://www.claymania.com/removal-trojan-adware.html
http://www.ik-cs.com/got-a-virus.htm |
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Dave
Guest
|
| Posted:
Wed Oct 05, 2005 12:59 am Post subject:
Re: Comcast broadband, router: only one PC at a time |
|
|
I ran multiple pc's using that same router before I upgraded to wireless. I
didn't have to do anything except make sure the router and all pc's were
configured for DHCP. You might want to do a reset of the router to get it
back to factory settings in case osmething has been changed. Then just
make sure it's set for DHCP. Check the pc's for DHCP too.
"Morris Ebbets" <idontwantnospam@nospam.invalid> wrote in message
news:f5y0f.77$r5.177@mencken.net.nih.gov...
| Quote: | Just got married and moved in with my wife, who has Comcast cable
broadband.
(Had previously been on Verizon DSL.) She has a Motorola SB1500 SURFboard
cable modem and a LINKSYS BEFSR41 router; runs Windows XP Home. (Pretty
sure it's SP2.)
Looking at the quick setup guide for the router, I tried plugging my
Windows
XP Home SP2 box in. Didn't work. Tried a few things, then finally got it
to work when I found that I can get one computer (but not both) running
broadband. Pattern seems to be that the one I plug into port 1 (or
whatever
it's called) on the router works, but not the other.
Any suggestions on how I can get both to work simultaneously? I did some
web/USENET searches on this, and can't quite figure it out. (I went to
the
admin web page for the router, and it says it's set up for 50 PCs, not
merely 1.)
TIA,
S
|
|
|
| Back to top |
|
|
Tom Stiller
Guest
|
| Posted:
Wed Oct 05, 2005 1:22 am Post subject:
Re: Comcast broadband, router: only one PC at a time |
|
|
In article <c_A0f.4802$BU1.1939@trnddc06>,
"David H. Lipman" <DLipman~nospam~@Verizon.Net> wrote:
| Quote: | From: "Tom Stiller" <tomstiller@comcast.net
|
| Well, my old BEFSR41 captures the ISP (Comcast) supplied DNS addresses.
| All the computers on my local network have manually assigned IP
| addresses and specify 192.168.1.1 as their DNS entry. I have no problem
| resolving URLs on any of them.
|
Well Tom I tested it on my BEFSR81 and you are correct !
That is news to me and I have installed too many BEFSR41 (Model v1, v2 and
v3) to keep track
of ;-)
Thanx for the correction.
|
You're welcome. I know I've made my share of mistakes and that's the
primary reason why I like public newsgroups and open source software;
there are always sharp-eyed observers to see that the emperor is fully
clothed ;-)
--
Tom Stiller
PGP fingerprint = 5108 DDB2 9761 EDE5 E7E3
7BDA 71ED 6496 99C0 C7CF |
|
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|
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Tom Stiller
Guest
|
| Posted:
Wed Oct 05, 2005 1:46 am Post subject:
Re: Comcast broadband, router: only one PC at a time |
|
|
In article <fvA0f.81$r5.206@mencken.net.nih.gov>,
"Morris Ebbets" <idontwantnospam@nospam.invalid> wrote:
| Quote: | At this point my best guess is that which one of you suggested, namely, a
bad router...
Any further thoughts?
|
Before replacing the router, you might download and install the latest
firmware from the support page at <http"//linksys.com>
--
Tom Stiller
PGP fingerprint = 5108 DDB2 9761 EDE5 E7E3
7BDA 71ED 6496 99C0 C7CF |
|
| Back to top |
|
|
Bill M.
Guest
|
| Posted:
Wed Oct 05, 2005 3:50 am Post subject:
Re: Comcast broadband, router: only one PC at a time |
|
|
On Tue, 4 Oct 2005 15:13:15 -0400, "Morris Ebbets"
<idontwantnospam@nospam.invalid> wrote:
| Quote: | At this point my best guess is that which one of you suggested, namely, a
bad router...
Any further thoughts?
|
I just checked my own router to see if it had the option to disable
certain ports in the QoS config, but it only allows ports to be set at
a High or Low priority. I don't see anything about completely
disabling them, and I assume yours is the same. Even so, as has been
suggested, it probably wouldn't hurt to do a full reset to put
everything back to factory defaults. Either stick a paper clip into
the reset hole or reset it via the Admin page.
So far, it was sounding like ports 2-4 are dead, but you said ping
works through each of them, so they aren't dead after all. *shrug*
--
Bill |
|
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