Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm experiencing constant intermittent lag spikes from my wireless network and decided the investigate using wireshark.

I found out that during one of the spikes, the transmitting address (Station A), which happens to be my wireless router (Engenius ESR9850), is sending out 25 of these RTS packets.

540 0.201225 Station A (TA) Station B (RA) 802.11 52 Request-to-send, Flags=........C

I've exhausted all my options trying to eliminate the lag spike. These are the following things I've tried.

  1. Changing the wireless channel (It is using channel 11 now)
  2. Changing the preamble (Short)
  3. Changing the transmission bandwidth (20mhz)
  4. Changing the RTS and fragmentation threshold (2306/2307)

Here are some additional info:

  • Wireless mode: b/g/n
  • Encryption: WPA2-PSK

Is the router going rogue?? It is also linked to an ESR6670 via WDS. Station B is probably connected to the ESR6670 when this happened.

Any ideas? :/

share|improve this question

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.