Hi, I'm trying to investigate packet drops in a production network. We have CCR1036, CCR2004s, and CCR2216. I noticed that the RX DROP counters remain at 0, yet packet loss is occurring. The only counter showing any activity is tx-queue-drop, but its value is relatively low.
To further investigate, I set up a lab using a Cisco TREX traffic generator. The test setup includes a server with Intel X520 network cards running Cisco TREX, connected to a switch and an RB5009 (7.18.2) via the SFP+ port. The configuration is simple—routing between two networks using VLANs, with no firewall or QoS enabled.
TREX reports massive packet drops, yet MikroTik shows no issues. Even when pushing 6M pps of 64-byte packets to the MikroTik device, no RX/TX drops are visible on its interfaces.
Why is this happening? Is there a counter that accurately reflects packet drops, possibly at the driver level?
To further investigate, I set up a lab using a Cisco TREX traffic generator. The test setup includes a server with Intel X520 network cards running Cisco TREX, connected to a switch and an RB5009 (7.18.2) via the SFP+ port. The configuration is simple—routing between two networks using VLANs, with no firewall or QoS enabled.
TREX reports massive packet drops, yet MikroTik shows no issues. Even when pushing 6M pps of 64-byte packets to the MikroTik device, no RX/TX drops are visible on its interfaces.
Why is this happening? Is there a counter that accurately reflects packet drops, possibly at the driver level?
Statistics: Posted by rafaaall2 — Fri Mar 28, 2025 11:40 am