TP-Link Switch Monitoring report

[Quiller]

I installed a TP-Link switch last week and I'm wondering why I have the amount of RxBadPkt that it is reporting. The TxBadPkt is 0, but not RxBadPkt.

Is this normal? I have put the plugs on myself and i'm not getting any serious errors or something like that. I'm just curious if I need to redo the plugs.

 

[azazel1024]

What is on that port? That does seem rather high. I don't think I've honestly noticed any receive bad packets, though I don't do long term monitoring on my switch (also a TP-Link switch).

I guess it could be a bad switch or bad run. It could also be a bad end point device.

 

[dany500]

thanks for sharing. It helps me.

 

[LoneWolf]

If you can, I'd try a new cable for that run on the same port. If it's a run with patch panels/wall port and you can't change the run, I'd try the following:

1) switch out the patch cables in the run on both ends, and test again
2) Re-terminate at the patch panel and the wall port, and test again
3) If neither of those is successful, plug the run into another switch port and see if you get the same errors. If you don't, you probably have a cabling issue on the run. If you do, it sounds like an issue with the switch port itself.

 

[azazel1024]

4) could be an issue with the NIC on the other end too. Could be spamming bad packets occasionally or possibly not obeying TCP windowing, bad frame size, etc that is causing issues occasionally.

Just a thought for a #4.

 

[LoneWolf]

Also an option. Good call.

 

[azazel1024]

I bring up #4 in part because of the prompting I got seeing this. I've been looking at the bad packets on my network through my TP-Link, Trendnet and DLink switches.

Most of them have at least a few bad packets on every port, but we are talking single to double digits on most of them after an hour or so of monitoring (with actual activity, not just ARP stuff). However, my Apple TV seems to specialize in backpackets. Over the duration of an entire movie streams, I get somewhere in the high hundreds of back packets from it. I've swapped cables and even tried swapping ports and hooking it up straight to the LAN drop instead of through the DLink DGS1100 I have sitting in my entertainment center (in which case I see the Rx bad packets on the TP-link core switch instead of on the DLink edge switch). Same deal, still get the bad packets from it.

It isn't causing any obvious issues, but I am 99.99% sure it is some issue with the Apple TV itself spawning some bad packets.

But...meh. Nothing I can do about it. The Apple TV works perfectly as far as the user can tell and no obvious issue occuring on the network other than the fact that the Apple TV is (I assume) retransmitting a packet every once in awhile after one gets dropped.

Looking at the total packet count, its something on the order of .02-.03% bad packets compared to total count. I think most other devices/ports I am seeing something on the order of .0001-.001% bad packet rate on my network.