Hi Guys

I would really appreciate a little help here if anyone can assist or point me in the right direction.

I have this week come across the multiple NV2 link issue that has been previously debated on the forum; initially I had a PtP NV2 link for my backhaul and then a PtMP running NV2 also, everything works loverly except for TCP throughput...as illustrated below

A < -- > B 95Mbps
B < -- > C 90 Mbps
A < -- > C 20 Mbps

So following the advise on the forums, i've updated the PtP link to run Nstreme, which instantly resolves the TCP throughput issue however the link is immensely unstable and keeps dropping 10 - 20 times per hour.

Here is the config on the nstreme link, any advise would be hugely appreciated as I am now having to consider using something else for the PtP and I really would rather not go this route.

/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
add authentication-types=wpa2-psk eap-methods="" management-protection=allowed mode=dynamic-keys name=cstring supplicant-identity="" wpa2-pre-shared-key=xxxxxxxxx
/interface wireless
set [ find default-name=wlan1 ] band=5ghz-a/n channel-width=20/40mhz-Ce disabled=no frequency=5300 mode=bridge name=wlan-uplink
security-profile=CConnect tdma-period-size=auto wireless-protocol=nstreme wps-mode=disabled
/interface wireless nstreme
set wlan-uplink disable-csma=yes enable-nstreme=yes framer-limit=3600 framer-policy=exact-size

If there is any further information that I can provide to assist in resolution, please let me know

Mark

Hi,
this issue is know since about 4 years. It is a normal behaviour of multilinks in nv2 but not only: I ve find it in other vendors.
From my experience you can mitigate it by:
1) All ethernet interfaces must be 1gbps, without errors.
2) CCQ (wireless) must be >90%

Ciambot

Many thanks for the response.

I am still rather new to the wireless side of things and just trying to get my head around some of the little snag, qwerks etc

MArk

Sounds like self interference.

What channels are you using?

This also may be a good candidate to test the new sync feature in the newest beta release.