Currently I have experienced collisions and packet loss on an outer routing switch (1-2% from the States and above 6% when tested from Europe). In a basic way infrastructure looks like enter image description here

Where outer switch is Netgear DS524 (previously some Linksys). NSA TS and NSA HA are Sonciwall 2400 family. Internet test gateway and WiFi are network devices before a firewall (a PC and a wireless guest AP).

I have tested if there are packet loss on VLANs behind a firewall but all work as should.

What can cause those packet loss on that outer switch? Any good suggestions for a hardware replacement (up to 8 ports, rack mountable)?

1 Answer 1


The Netgear DS524 is a hub, not a switch. Collisions are part of life with hubs. Switches separate collision domains per port, while hubs do not.

Hubs are layer-1 devices that constitute a single connection for all ports.

Switches are layer-2 devices that have separate connections for each port.

  • Yeah, I know that but I have switched from Linksys to Netgear because early packed loss on a Linksys and Netgear I just had on a shelf. Any good suggestion for a replacement? I will mark then as an answer Sep 24, 2015 at 17:49
  • You are just going to need to live with collisions if you use a hub.
    – Ron Maupin
    Sep 24, 2015 at 17:50
  • But packet loss coming from those collisions? If so I need to replace it back with a switch (any suggestion?) Sep 24, 2015 at 17:53
  • 1
    You need a switch to avoid collisions. With a switch you avoid collisions, and a good managed switch can monitor the ports to give you errors that may result in packet loss. Product and resource recommendations are off-topic for this forum.
    – Ron Maupin
    Sep 24, 2015 at 17:57
  • 1
    Without any more details on the errors causing the packet loss, there is no way to know. This is a separate question, and it should be asked in a new question. You could also take this discussion to the chat.
    – Ron Maupin
    Sep 24, 2015 at 18:03

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