B5/B5c/B5L 1.5.0 Release Notes

Note: You can find the release notes at the following links:
B5/B5c: http://backhaul.help.mimosa.co/backhaul-firmware-release-notes
B5L: http://backhaul.help.mimosa.co/backhaul-firmware-release-notes-b5-lite

Firmware Version 1.5.0
April 17, 2018

Firmware images are product and mode specific. Confirm firmware image matches the product before upgrading. Upgrade the far side first, regardless of AP or Station setting.

Supported Upgrade Paths
B5/B5c can be upgraded from any release before 1.5.0 to 1.5.0.

Regulatory Updates

  1. Enabled licensed mode operation for Barbados.
  2. Reduce Vietnam EIRP to 28 dBm.
  3. Update Canada’s newly allocated 100 MHz of unlicensed spectrum (5150-5250 MHz).
  4. Algeria 5 GHz Regulations update to include spectrum from 5250-5350 and 5470-5670.
  5. Updated channel plan and EIRP for Indonesia.
  6. Updated UK regulations as per OFCOM documentation to remove notch between 5725 to 5850 MHz.

Resolved Issues

  1. Fixed KRACK vulnerability (i.e., WPA-2 vulnerability related to key replay).
  2. Feature gives the ability to disable/enable firewall through UI. The firewall rules protect the device from DoS attacks.
  3. Improved SNMP stability and responsiveness.
  4. Corrected value of SNMP variable for antenna gain mimosaAntennaGain on B5/B5c running in Station mode.
  5. Fixed an issue with NTP information missing while doing snmpwalk on mimosaService MIB.
  6. Updated security vulnerability patches for DNS and DHCP servers running on device.
  7. Change security protocol for devices connecting to Mimosa Cloud from SSLv3 to TLSv1.2.
  8. Stability improvements for crashes and platform performance.
  9. Cloud connectivity improvements.
  10. Implemented downshift mechanism for B5-Lite to 100Base-T from 1000Base-T for scenarios where any two pairs out of four pairs of Ethernet cable may have gone bad. (B5L only)
  11. Improved accuracy of short link distances for B5-Lite.

Radio (PHY and MAC)

  1. Channel changes due to radar hit on the station trigger are now logged.
  2. Improved the responsiveness of aiming mode.
  3. Fixed an issue where Channel/Power changes on AP caused “Error unable to load data" on device UI.
  4. Fix a condition where combined spectrum looks incorrect.
  5. Fixed an issue on a B5/B5c that would, on some occasions, add an exclusion for channels 5600-5650. If 6. this is the selected channel, then a different DFS would be selected. This issue may still occur in the 7. new release, but once the exclusion has been removed, the exclusion will not re-appear.

Known Issue
If both the backhaul radios are attached to Cisco 3550 or 3750 switches and the Dynamic Trunking Protocol on the switches is turned on, connectivity to device’s management IP may fail. The workaround is to turn off the Dynamic Trunking Protocol on the trunk port.


Have deployed the 1.5.0 fw on our redundany backhaul links and the ethernet flapping issue seems to have almost gone, except for one place where i suspect the cable is in poorly shape. We use mostly Cisco C2960CX-8PC-L switches.
The installation of approx 30pcs of 5Bc is expected to be finished in the autumn so we will have more results then. Our PtP links range from 20km to 1km.

One major thing seems to be wrong in the allowed power levels for the 5725-5795,5815-5850 frequenzies. In Norway 200W e.i.r.p (almost 53dBi) in total is allowed with max 1W directly fed to the antennas. To acheive that we have to artificially set the antennas with levels lower than they really are.
An example is that if the antennas is set to 30dBi, max 6dBi could be set on the TX power levels. Thought the TX levels then atleast would be up to 22dbi. Any comments on that?

In the wishlist is to be able to use 10 and 30Mhz channels also. The 5815-5850 (35Mhz) gap could be used more efficient then. The spectrum is very crowded here in some of the places we need the bandwidth most.