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Posted Nov 5, 2012
9:23:45 AM
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Erratic TV Reception with DVR behind Router behind 3801HGV

I recently added a new router (Asus RT-AC66U) behind my 2Wire 3801HGV residential gateway by following SomeJoe7777's *very* helpful post:

 

(http://forums.att.com/t5/Residential-Gateway/U-verse-for-BUSINESS-2Wire-3600HGV-bridge-mode-or-anoth...

 

After doing so, Internet and all devices worked fine with the exception of my DVR - a Scientific Atlanta ISB7500).  With it connected to one of the new rtouter's ports, I was able to verify that it acquired an IP address from the router (which is on a different LAN segment than the RG); however, after about a minute, the DVR reported loss of signal.  Switching to another channel restored operation for about a minute, after which signal loss was reported again.
I found that I was able to restore TV operation by plugging the DVR into one of the RG ports, thus bypassing the router.  For several reasons, I would like to have everything (including the DVR) on the new router.

 

Any thoughts on what I need to do to accomplish this?

 

Thanks.

I recently added a new router (Asus RT-AC66U) behind my 2Wire 3801HGV residential gateway by following SomeJoe7777's *very* helpful post:

 

(http://forums.att.com/t5/Residential-Gateway/U-verse-for-BUSINESS-2Wire-3600HGV-bridge-mode-or-another-AT-amp/m-p/2707755).

 

After doing so, Internet and all devices worked fine with the exception of my DVR - a Scientific Atlanta ISB7500).  With it connected to one of the new rtouter's ports, I was able to verify that it acquired an IP address from the router (which is on a different LAN segment than the RG); however, after about a minute, the DVR reported loss of signal.  Switching to another channel restored operation for about a minute, after which signal loss was reported again.
I found that I was able to restore TV operation by plugging the DVR into one of the RG ports, thus bypassing the router.  For several reasons, I would like to have everything (including the DVR) on the new router.

 

Any thoughts on what I need to do to accomplish this?

 

Thanks.

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Nov 5, 2012 9:27:18 AM
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ACE - Expert

You may not connect the DVR or any STB (or the transmitter for a wireless STB) behind your own router.

 

They must be connected to the RG, or to a switch connected to an RG port.  They must get DHCP addresses from the RG, and be able to properly get multicast traffic and IGMP packets to and from the RG.

 

*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
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Erratic TV Reception with DVR behind Router behind 3801HGV

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Nov 5, 2012 9:27:18 AM
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ACE - Expert

You may not connect the DVR or any STB (or the transmitter for a wireless STB) behind your own router.

 

They must be connected to the RG, or to a switch connected to an RG port.  They must get DHCP addresses from the RG, and be able to properly get multicast traffic and IGMP packets to and from the RG.

 

You may not connect the DVR or any STB (or the transmitter for a wireless STB) behind your own router.

 

They must be connected to the RG, or to a switch connected to an RG port.  They must get DHCP addresses from the RG, and be able to properly get multicast traffic and IGMP packets to and from the RG.

 

*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.

Re: Erratic TV Reception with DVR behind Router behind 3801HGV

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Nov 5, 2012 10:29:19 AM
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Thanks, JefferMC, for your clear and complete response - even though it wasn't the answer I had hoped for.
Thanks, JefferMC, for your clear and complete response - even though it wasn't the answer I had hoped for.

Re: Erratic TV Reception with DVR behind Router behind 3801HGV

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Nov 5, 2012 5:36:54 PM
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Professor
Also, it is not Scientific Atlanta that makes the boxes, but Cisco & Motorola. Cisco ate up SA back in 2006, when the deal finally closed.
________________________________________________________________

"Ren: Now listen, Cadet. I've got a job for you. See this button? Don't touch it! It's the History Eraser button, you fool!

Stimpy: So what'll happen?

Ren: That's just it. We don't know. Maybe something bad, maybe something good. I guess we'll never know, 'cause you're going to guard it. You won't touch it, will you?"
________________________________________________________________
Also, it is not Scientific Atlanta that makes the boxes, but Cisco & Motorola. Cisco ate up SA back in 2006, when the deal finally closed.
________________________________________________________________

"Ren: Now listen, Cadet. I've got a job for you. See this button? Don't touch it! It's the History Eraser button, you fool!

Stimpy: So what'll happen?

Ren: That's just it. We don't know. Maybe something bad, maybe something good. I guess we'll never know, 'cause you're going to guard it. You won't touch it, will you?"
________________________________________________________________

Re: Erratic TV Reception with DVR behind Router behind 3801HGV

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Nov 6, 2012 5:14:50 AM
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gregzoll_1 - yes, you're right. My bad...
gregzoll_1 - yes, you're right. My bad...

Re: Erratic TV Reception with DVR behind Router behind 3801HGV

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