How many WAN ports?

Discussion in 'Tomato Firmware' started by Synaps3, Jun 28, 2012.

  1. Synaps3

    Synaps3 Serious Server Member

    I know that the tomato firmware supports Dual WAN ports. Is it possible to use hacks or scripts to use four? I am just curious if a WRT54GL at 250MHz would have enough power to do it.
  2. The Doctor

    The Doctor LI Guru Member

    I can't answer about the possibility of using 4 ports regardless of router model, but the CPU power required is mainly determined by total throughput and whether you're using features that increase CPU load. My WRT54G-TM at 250MHz could handle my connection at 25/25, but just barely. 35/35 required a move to RT-N16, just to give you some idea. Dual WAN on Tomato is rather new, but perhaps a developer can give a complete answer.

  3. xtacydima

    xtacydima LI Guru Member

    Seeing as how most routers have only 4 ethernet female receptacles, how do you plan to distribute this? One output LAN into a huge switch to balance 4 different ISP sources?
    I do not think it's possible, there isn't even dual wan available from the dev's here, it's from a third party chinese developer.

    I think it will be available in the future though, as ASUS has released their code on it.
  4. jyavenard

    jyavenard Network Guru Member

    Why would you need four "huge switch" when all you would be connecting to a "WAN" is a cable or adsl modem...
  5. Synaps3

    Synaps3 Serious Server Member

    Yes, that's the idea. I never use the router for its switch functionality anyway. I just have one of the ports connected to a switch.

    No, not four switches, just four DSL connections into a router.

    That is what I expected. By 25/25, do you mean you have two connections at 25Mbits? By tomorrow, I am going to have two 15Mbit connections so it should work if that's what you meant.

    I am kind of a noob to the whole idea of load balancing. It seems like this would be used often in many industrial applications. I know this may sound like a stupid question, but how do schools and businesses do this? I've been looking at routers and even the really expensive ones seem to have only two WAN ports. I know this can probably be accomplished by using a server, but it seems like there would be many situations when a server wouldn't be necessary because all you want to do is load balance. Is there a reason why I can't seem to find any routers with more than two WAN ports?
  6. The Doctor

    The Doctor LI Guru Member

    By 25/25, I meant 25 Mb up & 25 Mb down. Using all bandwidth in both directions pushed CPU to 100% and often pushed load over 1.00. Basically, 50Mb total pushed the router to it's limit, or perhaps a little past it's limit.

  7. xtacydima

    xtacydima LI Guru Member

    I think for four ports the RV016 Multi WAN VPN Router is the best way to go for you... I don't think it will happen here in Tomato for a while, and so few people need it I don't think the dev's here will ever go past making a dual wan firmware

    Ed, interesting insight, I always wondered what the push limits was on the older series, I have a newer model so I could never test.
  8. leandroong

    leandroong LI Guru Member

    How about combining 3G modem and DSL modem for a dual WAN bandwidths possible ?
  9. xtacydima

    xtacydima LI Guru Member

    I think that might be possible with Merlin's firmware at this time. Possibly also the tomato dual WAN from that third party developer although I haven't looked at it in a while.
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