RV042 Bandwidth Management - Ideal Settings?

Discussion in 'Cisco Small Business Routers and VPN Solutions' started by Jason Howe, Sep 4, 2012.

  1. Jason Howe

    Jason Howe Serious Server Member

    I was just having a look at the bandwidth management section in my RV042, and I have a question.

    The default for up and downstream is 512Kbps. Is there a more ideal setting to improve bandwidth utilization, or is that the generally accepted rate for both?

    As well, I've read a few different posts that mention turning off SPI (Stateful Packet Inspection) to improve bandwidth. My only question on that topic is: Is it safe to do that? My gut tells me no, but my need for increased capacity is telling me to do it anyway. Any thoughts?

  2. Toxic

    Toxic Administrator Staff Member

    What speed is your internet? (Up and down)

    The 512 setting is just a default setting that Cisco had added to the firmware settings.

    Sent from my GT9100 - CM10 - Tapatalk v2.2.8
  3. Toxic

    Toxic Administrator Staff Member

  4. Jason Howe

    Jason Howe Serious Server Member

    Thanks Toxic. I've asked our ISP to provide me with their 'official' speeds, but on speedtest we were getting around 9.5 Mbps down, and 4.5 up. Not great, but it is what it is. In any case, the 512Kbps speed provided as a default seems ridiculously slow to me, but I assume they expect that admins will be changing it anyway so they simply chose a low benchmark.

    I guess I'm just concerned with changing the speeds on the router...I'd like to know what the impact is if I adjust the setting to use the full capacity provided by my ISP. If the impact is only good, then I'll change it, I just want to be sure there are no negative effects.
  5. Jason Howe

    Jason Howe Serious Server Member

    Or more specifically, I'd like to know if changing the speed on the RV042 will truly increase our bandwidth exponentially. So, if it's currently 512Kbps, does that mean that our network is truly being limited to that speed until we change it?

    Sorry for the noob questions, but the documentation on the RV042's isn't terribly good, so I'm having a tough time finding out specific answers.

  6. Toxic

    Toxic Administrator Staff Member

    It depends.....if you use priority or rate control.

    Sent from my GT9100 - CM10 - Tapatalk v2.2.8
  7. Jason Howe

    Jason Howe Serious Server Member

    Ok, let's assume I'm using Priority then for a vpn connection. Here's what I've configured:


    We've been having issues lately with the VPN disconnecting, so I wanted to give it Priority (which I believe I've done correctly...if not, feel free to tell me I'm an idiot). So, as you can see I've set the WAN1 link speed to be 512k up, and 4000 down. Do you see any issues with this?

  8. Toxic

    Toxic Administrator Staff Member

    Cant see any.

    IPSec Tunnels use these ports generally:

    500/UDP (IKE)
    4500/UDP (NAT Traversal)
    1701/TCP (L2TP)
    1723/TCP (PPTP)

    50 - Encapsulation Header (ESP)
    51 - Authentication Header (AH)

    if the VPN keeps dropping there maybe another reason. MTU, Idle time/DPD, SA Lifetime
  9. Sfor

    Sfor Network Guru Member

    A side note.
    RV042 v1 ignores "The Maximum Bandwidth provided by ISP" values when there is no Rate Control or Priority rule set. With just one rule there the total WAN transfers (VPN included) are clipped to the speeds set in the "The Maximum Bandwidth provided by ISP" fields.
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