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Raomio plus/pro uses two IPs

Discussion in 'TiVo Roamio DVRs' started by stumantexas, Aug 28, 2013.

  1. SugarBowl

    SugarBowl Member

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    Jan 4, 2007
    Cary, NC
    So there must be a switch inside the Pro/Plus? Does this explain the gigabit controller? Gigabit into the box, then 10/100 to Tivo and 10/100 to the Streamer?
     
  2. jfh3

    jfh3 New Member

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    Apr 15, 2004
    Denver area
    There is a bridge, not a switch.
     
  3. socrplyr

    socrplyr Active Member

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    Jul 19, 2006
    There is a switch. A bridge changes from one media type to another. For example in the Premiere's the MoCA adapter is a bridge. It does not allow you to hook multiple devices up. Of course if there is a switch behind the bridge you could.
    I haven't seen a hardware breakout, but I am going to guess that connected to the switch is the SoC for the DVR, the MoCA adapter, the external ethernet port, and the stream hardware. I am going to guess that the wifi is not a wifi bridge, but connected to the SoC via USB (I could be wrong though). I figure this, because the way the 4 tuner version's spec's are, it would make sense to have a bridge. Although, they could be using a second ethernet port instead. If they did, that could make the Roamio double as a wifi extender if they hooked it to the switch as well and allowed it to be in an AP mode. I bet they don't allow for routing of wifi traffic through the box though.
     
  4. Kolenka

    Kolenka New Member

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    Jan 2, 2013
    I had to re-read this a couple times, and as I did, I started thinking that we are splitting hairs. Yes, in networking a bridge and switch are two different things. But they are more frequently getting embedded into the same SoC. It wouldn't surprise me at all if the TiVo is configured this way. 2 ethernet "ports" facing the Stream and the DVR portions. 1 ethernet port facing externally, and the SoC also controlling the Wifi bridge behavior.

    While my knowledge is a bit rusty, I'd say that the MAC addresses are identical over Ethernet and Wifi lend some evidence to this.
     
  5. socrplyr

    socrplyr Active Member

    1,076
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    Jul 19, 2006
    I missed that the MACs are the same for both wired and wireless. Yes that would definitely point to the WiFi being hooked to the switch. I guess that would also be necessary for the stream to get internet access as well. If anyone owns the 4-tuner model, I'd be interested to see if it is the same for them as well. I am not in the industry, but I do look at chips from time to time. However, I have never seen an integrated Wifi + switch done on the same silicon. It may exist though (or even be common for that matter).
     
  6. socrplyr

    socrplyr Active Member

    1,076
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    Jul 19, 2006
    Yes it would. The thing I haven't found is the specs on the BCM7425/29. I would have thought that by now they might have a gigabit interface themselves.
     
  7. Kolenka

    Kolenka New Member

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    Jan 2, 2013
    Hmm, I'm probably wrong on the level of integration going on it seems. Being in the cellular industry, there is a definite trend in combining multiple interfaces into the SoC or at least a single baseband chip. But we're pushing more miniaturization than the STB/Home Networking guys at the moment.

    I'll agree and say the WiFi is probably just hooked up to a PHY interface for the switch, with a side channel for the main SoC for the TiVo itself to control the connection for the bridge.
     
  8. eboydog

    eboydog Just TiVo'ing.....

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    Mar 23, 2006
    The main Roamio Ethernet and Stream Ethernet interfaces have similer but different Mac addresses, I assign static addresses to both using my router to handle the static addresses basiced on Mac address. As mentioned in another thread, one person had a problem were pytivo found the stream ip address first and they couldn't transfer recordings, I assign a lower numbered ip address to my main pro so that one, it always finds it first when pytivo dis overs the TiVos and so I always know the addresses of my TiVos.
     
  9. aaronwt

    aaronwt UHD Addict

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    Jan 31, 2002
    Northern...
    If you don't assign a static Ip does the router always assign the higher Ip address to the internal Stream?
    This has always been the case on my network. I don't bother assigning a static Ip address to any of my Tivos any more since switching out to more minis and since I also have not had any issues letting my router assign them. I can't use my Stream anyway since there is no android support.
     
  10. kdmorse

    kdmorse Active Member

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    Jan 29, 2001
    Germantown, MD
    It tends to, by coincidence, in most home networks with most consumer routers. It's not a behavior that can be relied upon, it just tends to work out that way.
     
  11. eboydog

    eboydog Just TiVo'ing.....

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    Mar 23, 2006
    I manage my static addresses by using the dhcp server in my router, by identifying each MAC, I just assign it staticly to avoid any issues and as far as which interface gets an address first I would guess the Stream will get an address first since techically it takes less time for Stream process to come up than the full Roamio DVR system to be operational; as the Stream interface having a higher ip dhcp addresse, that would just depend on chance and circumstances which is again why I assign static addresses to all my local TiVo devices, even the minis.
     

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