Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    M.2 PCIe Lanes in 3100-SG

    Scheduled Pinned Locked Moved Official Netgate® Hardware
    4 Posts 2 Posters 538 Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • T
      Tleary
      last edited by Tleary

      How many PCIe lanes does the 3100-SG have?
      In a chat room I asked if anyone was doing packet captures with the M.2 in a 3100-SG, and if there was a performance impact. The pfSense Snort package does pcaps. Is that even practical for continuous use or just brief troublshooting? The only answer I got was performance depends on how many PCIe lanes are used by the M.2.

      1 Reply Last reply Reply Quote 0
      • stephenw10S
        stephenw10 Netgate Administrator
        last edited by

        The M.2 slot in the SG-3100 is SATA so I think the question is probably not relevant.

        But I would say that does not make sense. If you wanted to do something like that you should use Snort as a remote sensor and feed data back to something central. I believe security onion can do that, though I've yet to try it myself. But that would not be continuous pcaps either. That's probably far more data that can be usefully handled on the 3100.

        Steve

        T 1 Reply Last reply Reply Quote 0
        • T
          Tleary @stephenw10
          last edited by

          Thats a really good point. Its too much data to be useful. I use Security Onion, so I'll continue that route with a port mirror or dedicated tap I have. Since pfSense has a Snort package, I figured the M.2 would be great for its activity.

          1 Reply Last reply Reply Quote 0
          • stephenw10S
            stephenw10 Netgate Administrator
            last edited by

            There's no provision for using multiple drives in pfSense so you would need to boot from m.2 SSD
            or add your own scripts to enable it. There's a pretty good chance you would fill the drive accidentally and cause problems for the firewall. Hard to recommend doing that.

            Either way though, the m.2 slot is not NVMe so no PCIe lines.

            Steve

            1 Reply Last reply Reply Quote 1
            • First post
              Last post
            Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.