Hello guys,
I read a lot posts before writing this, but I didn't solve my problem.

I bought 2 pairs of Netmetal5 (2 with RB922UAGS-5HPacT-NM and 2 with RB921UAGS-5HPacT-NM). I upgraded the RouterOS to version 6.37.3. I would like to create a stable ptp link working as Ethernet bridges (eth<->wlan<->wlan<->eth). No problem of signal (there is LOS and distance is 500m). I configured the system in WDS (bridge+ station wds) and nstream (nv2 has worst performance) in 5GHzAC-only band, with channel size 80MHz Ceee (I have the wireless channel established with a capacity of 1300Mbps). I'm using a profession device to test the behavior of the link(i.e., a router tester).

I would like to replicate the performance reported in the specification:
Bridging none (fast path): 986.1Mbps (with packets of 1518 byte), 962.2Mbps (with packets of 512 byte) and 244.6Mbps (with packets of 64 bytes)
During my tests I'm sending packets with 1500 bytes, but I was unable to exceed 120Mbps on the link. there is some problem in my configuration?

AP conf
0 R name="wlan1" mtu=1500 l2mtu=1600 mac-address=4C:5E:0C:63:75:8A arp=enabled interface-type=Atheros AR9888 mode=ap-bridge ssid="Test3" frequency=5260 band=5ghz-onlyac
channel-width=20/40/80mhz-Ceee scan-list=default wireless-protocol=nstreme vlan-mode=no-tag vlan-id=1 wds-mode=dynamic wds-default-bridge=bridge-local wds-ignore-ssid=no
bridge-mode=enabled default-authentication=yes default-forwarding=no default-ap-tx-limit=0 default-client-tx-limit=0 hide-ssid=no security-profile=default compression=no

station conf
0 R name="wlan1" mtu=1500 l2mtu=1600 mac-address=4C:5E:0C:63:75:8A arp=enabled interface-type=Atheros AR9888 mode=ap-bridge ssid="Test3" frequency=5260 band=5ghz-onlyac
channel-width=20/40/80mhz-Ceee scan-list=default wireless-protocol=nstreme vlan-mode=no-tag vlan-id=1 wds-mode=dynamic wds-default-bridge=bridge-local wds-ignore-ssid=no
bridge-mode=enabled default-authentication=yes default-forwarding=no default-ap-tx-limit=0 default-client-tx-limit=0 hide-ssid=no security-profile=default compression=no

The CPU load is in the range 37-60%. I tried to disable all the other packages not required. Moreover sometime I have a burst of frame loss (minimal but present) also if the link is stable.

Do you have some suggestion?

Please let me know if you need further details.
Thanks a lot for the support.

can you post screen shots of the status for each link. Any errors however small on the wireless side will affect throughput.

Thanks a lot for your fast reply...

Here I attach the screenshot of the status page of devices.

And this is the other point-to-point.

I forgot to tell you that I'm using MIMO 3x3 using all the three chains available.

Any help or suggestion would be appreciated.

Looking at the first images you posted your ccq is a little low. you possible have some interference or you need to turn down your power on your TX. have you tried different wireless protocols.

Wireless link looks good. What happens when you build vlan over your bridge and do bandwith test over the vlan?, just curious.

Verstuurd vanaf mijn D5803 met Tapatalk

These tests use the ETHERNET interfaces, and they measure aggregated speed to assess the core performance.
In the case of your 922, this means traffic from ethernet to SFP, not via wireless only.

Thank you guys for your kind replies...

@dgnevans: forget about the first link (it was under installation with no finalized setup-up), just consider the second one that was up and running.

@hengst: the max throughput without vlans that I'm able to reach is around 120Mbps of Ethernet frames (no TCP, not UDP with link capacity of 1.170/1.300Gbps). With TCP I'm not able to exceed 50Mbps. It seems that the processing of the packets is too CPU hungry... Why using a VLAN should solve my problem?

@docmarius: thank you for highlighting the magic word ("ETHERNET") in the specification: I assumed that this Etherent mean eth-to-eth tests were between 2 different Netmetal5 devices. If I well understood, the specification test has been conducted involving the ether1 and the sfp1 interfaces. But in this case why I should use a Netmetal5 as Ethernet switch? It is a pity to use only the 10% of the link capacity...

Any other suggestions?

Thanks

I believe there might be something wrong with packets from wireless interface "through" the ap device. We are testing a lot trying to reproduce a clear view on that. I was curious if vlan would be differrnt then all going thru bridge. Your wireless id clearly showing its connection rate going up to 1Gb. so your max tcp trhoughput through the ap should be capable of lets say 450Mbits one way (half duplex), so where is it?

Verstuurd vanaf mijn D5803 met Tapatalk

Can you also be more specific about your test server and receiver please.

Verstuurd vanaf mijn D5803 met Tapatalk

I see that you are using 3 chains.
What antenna exactly do you use ?

And this is the other point-to-point.

I forgot to tell you that I'm using MIMO 3x3 using all the three chains available.

Any help or suggestion would be appreciated.

Hello! What antenna exactly do you use ?

Hi,

Please test AP/Bridge to Station Bridge without WDS
Use 6.39.1 enable New Bridge Feature fast Forward.

Hi,

Please test AP/Bridge to Station Bridge without WDS
Use 6.39.1 enable New Bridge Feature fast Forward.

Hi,
did you test fast-forward future ? is there any differences ?

Here is my status, but I cant get over 220mb tcp traffic. using nstreme also.

hi!

Can somebody help to do p2p link of 28k with netmetal5 and rocket dish.

in speedtest i get only 40/40 mbps.

Dear,

I mounted a link with 2x NETMETAL5 (RB922) and 2x rocket rd-5g34 with SLANT system (AF-5G-OMT-S45) as below:

(ENLACE1)

A-POINT RB3011-ether2
<1Gbps cable>
B-POINT RB922-ether1
<702Mbps / 780Mbps nv2> (65KM)
C-POINT RB922-ether1
<cable1Gbps>
D-POINT RB3011-ether2

Signal = TX-45 RX-46 702Mbps / 780Mbps
SNR = 60dB
Distance 65KM


Between A and B it sends 350Mbps TCP in BTEST (cable)
Between B and C it sends 170Mbps TCP in BTEST (wireless)
Between C and D it sends 350Mbps TCP in BTEST (cable)
Between A and D sends only 70Mbps in BTEST (cable + wireless)

I would not use nv2 here, as thats more useful to ptmp. I think nstream will be a better choice. Also check ack settings with your link calculations if you use ack.

Also it looks like your tx powers are very high ? To much tx wil distort your modulation.

Dear All,

We are using netmetal 5 for 25KM P2P link. But we are not getting proper throughput. Please suggest best configuration for AP & Station. Please check the attached file for my configuration.

Dear,

I mounted a link with 2x NETMETAL5 (RB922) and 2x rocket rd-5g34 with SLANT system (AF-5G-OMT-S45) as below:

(ENLACE1)

A-POINT RB3011-ether2
<1Gbps cable>
B-POINT RB922-ether1
<702Mbps / 780Mbps nv2> (65KM)
C-POINT RB922-ether1
<cable1Gbps>
D-POINT RB3011-ether2

Signal = TX-45 RX-46 702Mbps / 780Mbps
SNR = 60dB
Distance 65KM


Between A and B it sends 350Mbps TCP in BTEST (cable)
Between B and C it sends 170Mbps TCP in BTEST (wireless)
Between C and D it sends 350Mbps TCP in BTEST (cable)
Between A and D sends only 70Mbps in BTEST (cable + wireless)

Did you ever solve this 70 Mbit issue? I too am having the same issue, with the same set up that you have. Seems that there is an odd issue with these that just some people are having. I am curious to know if it was solved.