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dealhunter
Premium
join:2005-03-29
Fremont, CA
reply to mrschultz02

Re: Comcast CS cannot configure SB6141 to bridge mode?

I tried all possible combinations of power cycling / rebooting both cable modem and router but nothing worked. Linksys router could not get an IP address from SB6141 but my laptop could.

This thread has some discussion about DHCP related issues, and I wonder if I need to change any configuration of the modem to get this to work.

thanks again.



aefstoggaflm
Open Source Fan
Premium
join:2002-03-04
Bethlehem, PA
kudos:7
Reviews:
·PenTeleData
·Verizon Online DSL
reply to plencnerb

While I agree their modem can not handle the public IP, all it takes is one example to prove the text that I am quoting wrong.

said by plencnerb:

If it was a gateway device, with a built-in router, you would have 4 more RJ45 plugs on the back.

Oh really..

I point to »Verizon Online DSL FAQ »What equipment does verizon use for routers and modems and quote

quote:
Other than the the Westell 6110 which is a pure bridge modem, all other modems that are issued now are routing modems (they have a router built in). These include the Westell 2200,(almost obsolete now) 6100, 6100F, 327W and 7500 and the Actiontec 701c and 704wg. he

The Westell 2200, 6100, 6100F and Actiontec 701c have only one ethernet port.

^^^
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Please use the "yellow (IM) envelope" to contact me and please leave the URL intact.


plencnerb
Premium
join:2000-09-25
Carpentersville, IL
kudos:3

2 recommendations

Well, I never said I was perfect, and knew everything!

I did not think there was such a device that is a router, with only one RJ45 port on it. The picture above is of the Wirespeed Router, Model 2200. Like you needed the picture, as you knew one did exist. I just had to look it up as I did not believe someone would make a router with only one port.

That brings up the question. What good is a router with only one port on it? If you have this, and want to connect more then one wired computer to it, you would have to buy yourself a switch.

Again, just did not know such an item existed. Thanks for pointing it out.

--Brian
--
============================
--Brian Plencner

E-Mail: CoasterBrian72Cancer@gmail.com
Note: Kill Cancer to Reply via e-mail


NetFixer
Freedom is NOT Free
Premium
join:2004-06-24
The Boro
Reviews:
·Cingular Wireless
·Comcast Business..
·Vonage

3 edits

1 recommendation

said by plencnerb:

That brings up the question. What good is a router with only one port on it? If you have this, and want to connect more then one wired computer to it, you would have to buy yourself a switch.

Actually a router with one (or perhaps 2) built-in Ethernet ports is more the norm in the enterprise IT world than a router with a built-in switch (and a switch is what the extra ports are on a typical residential/soho router). The router does just that, it routes (and perhaps acts as a firewall). The job of connecting to multiple devices on the LAN is handled by one or more switches (which may be standalone boxes or plug-in modules for the router).

Shown below is a photo of the business end of a Cisco router. It comes standard with two Ethernet ports, two RS-232 serial interface ports and a GBIC interface (usually used with a fiber optic module, but it can also take a wired gigabit Ethernet module...either way, the GBIC module itself it a separately purchased item). Anything else (including additional Ethernet ports) must be purchased separately either as plug-in modules (which go into the space where the removable panels are located) or as standalone devices.




Just out of curiosity, how many LAN Ethernet ports does your pfsense router have?

--
A well-regulated militia, being necessary to the security of a free State, the right of the people to keep and bear arms shall not be infringed.

When governments fear people, there is liberty. When the people fear the government, there is tyranny.


graysonf
Premium,MVM
join:1999-07-16
Fort Lauderdale, FL
kudos:2

1 recommendation

reply to plencnerb

said by plencnerb:

What good is a router with only one port on it? If you have this, and want to connect more then one wired computer to it, you would have to buy yourself a switch.

What happens if you buy the typical four LAN port router but need to connect more than four computers? Sounds like a you still need a switch.


NetFixer
Freedom is NOT Free
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join:2004-06-24
The Boro
Reviews:
·Cingular Wireless
·Comcast Business..
·Vonage

1 recommendation

said by graysonf:

said by plencnerb:

What good is a router with only one port on it? If you have this, and want to connect more then one wired computer to it, you would have to buy yourself a switch.

What happens if you buy the typical four LAN port router but need to connect more than four computers? Sounds like a you still need a switch.

Yep, and if you have multiple LAN segments, perhaps more than one switch.



--
A well-regulated militia, being necessary to the security of a free State, the right of the people to keep and bear arms shall not be infringed.

When governments fear people, there is liberty. When the people fear the government, there is tyranny.


plencnerb
Premium
join:2000-09-25
Carpentersville, IL
kudos:3

1 recommendation

reply to graysonf

Correct. While my PFSense box does have just one NIC for my LAN, and then I have a switch, I was more specifically talking about routers that you would buy for home use. For example, a Linksys Router, Netgear Router, etc. All of those that I have seen that can be purchased at Wal-Mart, Best Buy, Fry's, TigerDirect, etc all come with 4 ports on them, as they are a router, plus a built-in 3 port switch.

Yes, a router really only needs one port, and then you add more. I just never saw a residential router that you would get for home use that only had one port on it.

I never said they did not exist, as they clearly do!

--Brian
--
============================
--Brian Plencner

E-Mail: CoasterBrian72Cancer@gmail.com
Note: Kill Cancer to Reply via e-mail



graysonf
Premium,MVM
join:1999-07-16
Fort Lauderdale, FL
kudos:2

1 recommendation

My Efficient SpeadStream 5660 ADSL router that I no longer use had only one ethernet port. Their 5600, widely used and issued by many telecos for ADSL service has only one port as well.



NetFixer
Freedom is NOT Free
Premium
join:2004-06-24
The Boro
Reviews:
·Cingular Wireless
·Comcast Business..
·Vonage

said by graysonf:

My Efficient SpeadStream 5660 ADSL router that I no longer use had only one ethernet port. Their 5600, widely used and issued by many telecos for ADSL service has only one port as well.

And let us not forget AT&T's ever popular Motorola/Netopia EasyBake 2210 DSL router that only had one Ethernet LAN port (maybe if it had more LAN ports some of the heat could escape along with the electrons).


The exhaust fan is a user added option


I have also had several AT&T and Vonage supplied VoIP routers that only had one LAN port.
--
A well-regulated militia, being necessary to the security of a free State, the right of the people to keep and bear arms shall not be infringed.

When governments fear people, there is liberty. When the people fear the government, there is tyranny.


NetFixer
Freedom is NOT Free
Premium
join:2004-06-24
The Boro
Reviews:
·Cingular Wireless
·Comcast Business..
·Vonage

3 edits

1 recommendation

reply to WiFu

Since this thread has been resurrected, I thought I would post something interesting that I discovered if I assumed that the OP's interpretation of the SB6141's DHCP server meant that it was a gateway router.

I setup my Netgear WNR1000v2-VC router's WAN to connect to my SB6121's LAN IP address instead of doing DHCP to get a Comcast IP address. What I discovered is that this is a good way for anyone who wants to see how much of the Internet is accessible using only IPv6. Even though I don't have IPv4 connectivity to the Internet (which was expected), I do get IPv6 connectivity to the Internet (which was a surprise).







C:\>ipconfig /all
 
Windows IP Configuration
 
        Host Name . . . . . . . . . . . . : RWS-6325
        Primary Dns Suffix  . . . . . . . :
        Node Type . . . . . . . . . . . . : Broadcast
        IP Routing Enabled. . . . . . . . : No
        WINS Proxy Enabled. . . . . . . . : No
 
Ethernet adapter Local Area Connection:
 
        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet
        Physical Address. . . . . . . . . : 00-17-A4-E3-E7-CF
        Dhcp Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
        IP Address. . . . . . . . . . . . : 192.168.10.16
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        IP Address. . . . . . . . . . . . : 2601:5:c80:1f:98f3:6498:e2f5:19c0
        IP Address. . . . . . . . . . . . : 2601:5:c80:1f:217:a4ff:fee3:e7cf
        IP Address. . . . . . . . . . . . : fe80::217:a4ff:fee3:e7cf%6
        Default Gateway . . . . . . . . . : 192.168.10.1
                                            fe80::a221:b7ff:fe9c:602%6
        DHCP Server . . . . . . . . . . . : 192.168.10.1
        DNS Servers . . . . . . . . . . . : 192.168.10.1
                                            fec0:0:0:ffff::1%1
                                            fec0:0:0:ffff::2%1
                                            fec0:0:0:ffff::3%1
        Lease Obtained. . . . . . . . . . : Saturday, March 30, 2013 14:07:43
        Lease Expires . . . . . . . . . . : Sunday, March 31, 2013 14:07:43
 
Tunnel adapter Automatic Tunneling Pseudo-Interface:
 
        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : Automatic Tunneling Pseudo-Interface
        Physical Address. . . . . . . . . : C0-A8-0A-10
        Dhcp Enabled. . . . . . . . . . . : No
        IP Address. . . . . . . . . . . . : fe80::5efe:192.168.10.16%2
        Default Gateway . . . . . . . . . :
        DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
                                            fec0:0:0:ffff::2%1
                                            fec0:0:0:ffff::3%1
        NetBIOS over Tcpip. . . . . . . . : Disabled
 
C:\>netsh int ipv6 show addr
Querying active state...
 
Interface 6: Local Area Connection
 
Addr Type  DAD State  Valid Life   Pref. Life   Address
---------  ---------- ------------ ------------ -----------------------------
Temporary  Preferred   3d23h45m22s    23h38m37s 2601:5:c80:1f:98f3:6498:e2f5:19c0
Public     Preferred   3d23h45m22s  3d23h45m22s 2601:5:c80:1f:217:a4ff:fee3:e7cf
Link       Preferred      infinite     infinite fe80::217:a4ff:fee3:e7cf
 
Interface 2: Automatic Tunneling Pseudo-Interface
 
Addr Type  DAD State  Valid Life   Pref. Life   Address
---------  ---------- ------------ ------------ -----------------------------
Link       Preferred      infinite     infinite fe80::5efe:192.168.10.16
 
Interface 1: Loopback Pseudo-Interface
 
Addr Type  DAD State  Valid Life   Pref. Life   Address
---------  ---------- ------------ ------------ -----------------------------
Loopback   Preferred      infinite     infinite ::1
Link       Preferred      infinite     infinite fe80::1
 
C:\>ping www.comcast.net
 
Pinging a1526.dscg.akamai.net [2001:559:0:61::173e:6fb9] with 32 bytes of data:
 
Reply from 2001:559:0:61::173e:6fb9: time=31ms
Reply from 2001:559:0:61::173e:6fb9: time=31ms
Reply from 2001:559:0:61::173e:6fb9: time=29ms
Reply from 2001:559:0:61::173e:6fb9: time=29ms
 
Ping statistics for 2001:559:0:61::173e:6fb9:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 29ms, Maximum = 31ms, Average = 30ms
 
C:\>ping -4 www.comcast.net
 
Pinging a1526.dscg.akamai.net [23.62.111.185] with 32 bytes of data:
 
Request timed out.
Request timed out.
Request timed out.
Request timed out.
 
Ping statistics for 23.62.111.185:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
 
C:\>ping www.dslreports.com
 
Pinging www.dslreports.com [209.123.109.175] with 32 bytes of data:
 
Request timed out.
Request timed out.
Request timed out.
Request timed out.
 
Ping statistics for 209.123.109.175:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
 

Oh well, so much for an Internet that can't connect to dslreports.com.

I wonder if the dslreports.com IPv6 holdup is nginix or NAC? I know that the Apache version that I use is keeping most of my web sites from being accessible using IPv6, but I have been putting off upgrading because it is going to be a big PITA to change the Apache config and rewrite a bunch of CGI scripts. Plus, the Apache version that Comcast uses on their hosting service (and the hosting service itself) also doesn't seem to support IPv6.

--
A well-regulated militia, being necessary to the security of a free State, the right of the people to keep and bear arms shall not be infringed.

When governments fear people, there is liberty. When the people fear the government, there is tyranny.


aefstoggaflm
Open Source Fan
Premium
join:2002-03-04
Bethlehem, PA
kudos:7
Reviews:
·PenTeleData
·Verizon Online DSL
reply to plencnerb

said by plencnerb:

I just never saw a residential router that you would get for home use that only had one port on it.

How about VoIP?

For example the Linksys SPA2102 has only one RJ-45 LAN port, but as noted on »www.cisco.com/en/US/products/ps1···dex.html it is designed for Businesses.

Does anyone make a VoIP residential router with only one RJ-45 LAN port...

Thanks
--
Please use the "yellow (IM) envelope" to contact me and please leave the URL intact.


NetFixer
Freedom is NOT Free
Premium
join:2004-06-24
The Boro
Reviews:
·Cingular Wireless
·Comcast Business..
·Vonage

1 recommendation

said by aefstoggaflm:

said by plencnerb:

I just never saw a residential router that you would get for home use that only had one port on it.

How about VoIP?

For example the Linksys SPA2102 has only one RJ-45 LAN port, but as noted on »www.cisco.com/en/US/products/ps1···dex.html it is designed for Businesses.

Does anyone make a VoIP residential router with only one RJ-45 LAN port...

Thanks

The answer to your question is yes. I have used a D-Link DVG-5102S VoIP router supplied by AT&T, and Vonage's VDV-23 VoIP router; and while I have not used one, Motorola's VT1005 is also a single LAN port VoIP router. Vonage's VDV series are the only ones I know of that can currently be purchased at a typical retail store as a new and supported device (although I suspect that someone will chide me for my ignorance). I recently purchased a couple of D-Link VTA-VR ATAs from an Amazon associate, but even though they were "new" and came with a one year warranty card, if either of them goes belly up, I don't expect either the seller or D-Link would honor the warranty. I purchased them because I don't like Vonage's VDV series boxes, and I needed the comm rack space that my older (and larger, since they both have 4 port switches) Cisco and Motorola VoIP routers were using.
--
A well-regulated militia, being necessary to the security of a free State, the right of the people to keep and bear arms shall not be infringed.

When governments fear people, there is liberty. When the people fear the government, there is tyranny.

mrschultz02

join:2007-09-10
Media, PA
reply to dealhunter

said by dealhunter:

I tried all possible combinations of power cycling / rebooting both cable modem and router but nothing worked. Linksys router could not get an IP address from SB6141 but my laptop could.

This thread has some discussion about DHCP related issues, and I wonder if I need to change any configuration of the modem to get this to work.

thanks again.

Like others said to the OP, there's really nothing to change on the modem. It must be a router issue, if it has the option to do MAC cloning you might try setting the mac address on the router to the same one as your laptop and see if that works.

dealhunter
Premium
join:2005-03-29
Fremont, CA

Cloning the mac address fixed the problem.

appreciate the help.

thanks again.