Supported Platforms
- ePMP AX based family
Download the firmware and documentation from:
ePMP4600, Force400/425/4600C/4625
Note for 6GHz ePMP AX users
Cambium Networks is making a limited number of 6 GHz ePMP 4600 Series proof of concept kits available for those network operators that have experimental licenses authorizing the use of these radios in 6 GHz. Operators can purchase these radios now and, upon submitting proof of a valid experimental license to the Cambium Networks support team via submitting the support ticket, receive a special software version enabling the 6 GHz channels on these radios. When the FCC officially launches the 6 GHz spectrum, these pre-launch radios will be software upgraded to meet the final band requirements.
Upon initial shipment, these radios will have FCC approval to operate in portions of the 5.725 GHz to 5.850 GHz spectrum and are locked only to these approved frequencies and power level. Transmit power in the 5 GHz band will be considerably lower than a typical 5 GHz radio as the primary function of these radios is to operate in the full 6 GHz band. Once an operator provides evidence of the experimental license to Cambium support , a firmware update will then unlock the full 6 GHz band. It is the operator’s responsibility to fully comply with the regulations dictated in the experimental license.
Features description
The following are the new features introduced in System Release 5.4.1:
MU-MIMO in WLR mode
MU-MIMO (Multi-User Multiple Input Multiple Output) is a technology used for wireless networks that enables multiple SMs to receive data simultaneously from a single Access Point. It works by allowing an access point to transmit data to multiple SMs at the same time using different spatial streams, each of which corresponds to a different antenna on the AP. This allows for greater throughput and better efficiency in the use of wireless network resources, as it enables multiple SMs to receive data at the same time without waiting for their turn.
MU-MIMO uses a technique called beamforming to direct the transmission of data to specific clients, which helps to minimize interference and improve network efficiency. By steering the transmission to specific SMs, the AP can reduce the amount of interference caused by overlapping signals from nearby APs or other sources of interference. This results in a cleaner signal and better network performance.
MU-MIMO is disabled by default and is marked with Beta Quality sign on GUI.
Enabling MU-MIMO can lead to significant throughput increment(up to x2), but it depends on Number of SMs in the Sector, their Distance to AP, angle diversity, etc.
The grouping mechanism is not fully optimized in 5.4.1 firmware and further improvements are coming along with MU-MIMO statistics and indicators that are well known from ePMP3000.
The same option is available via json template in CnMaestro:
{
"template_props": {
"templateName": "",
"templateDescription": "",
"device_type": "",
"version": "5.4.1-RC3"
},
"device_props": {
"wlrMUMIMOEnable": "0"
}
}
CLI configuration is below.
E6K_4x4_f00915>config set wlrMUMIMOEnable 1
E6K_4x4_f00915>config commit
SNMP parameter to enable/disable MU-MIMO:
wlrMUMIMOEnable OBJECT-TYPE
SYNTAX Integer32(0|1)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Control parameter of MU-MIMO in WLR mode:
0 - MU-MIMO is off
1 - MU-MIMO is on
Applicable for: AX devices in WLR mode
Device Allocation: AP"
Issues Resolved in System Release 5.4.1
| TrackingID | Product | Description |
|---|---|---|
| AXG-5714 | All | PPPoE traffic was not passing through the link when DPI was enabled on AP |
| AXG-5747 | All | Tx Power on SM could be 3-4 dBm which is lower than expected. |
| AXG-5788 | All | DHCP server configured on ePMP device did not respond to DHCP Discovery requests. |
| AXG-5824 | All | Ethernet Port disable/enable option was not working. |
| AXG-5911 | All | When a RADAR was detected on SM side, FCC SM was getting disconnected from AP. |
| AXG-5934 | All | Significant performance degradation was noticed when DPI (Deep Packet Inspection) was enabled. |
| AXG-6149 | All | Traffic was passing to only one SM when Wireless Link Test started to two SMs. |
| AXG-6199 | All | Ping Tool was not working. |
| AXG-6200 | All | Traceroute Tool was not working |
| AXG-6324 | All | Channel bandwidth was disrespected after RADAR detection and switching to the alternate channel. |
| AXG-6381 | All | Error appeared during the software upgrade through URL on Force 4525L. |
| AXG-6386 | All | MAC-Telnet feature was disabled by default. |
| AXG-6103 | All | The MU-MIMO gain could not be achieved with TCP or UDP bi-directional traffic. |
| AXG-6404 | All | If more than four SMs were connected and MU-MIMO was disabled, then the total throughput over AP was fluctuating significantly. |
| AXG-6463 | All | There was a packet loss in SM on the receiver side if ePMP Force 4626 operates as an AP with the maximal Tx power. |
| AXG-6660 | All | The SMs were disconnecting from AP under high load and if the MU-MIMO was enabled. |
| AXG-6624 | All | DHCP option 82 did not operate in ePTP mode. |
| AXG-6885 | All | Access Points (AP) UIs were not working if more than 25 Subscriber Modules (SM) were connected in WLR mode. |
| AXG-7015 | ePMP 4500 | Open DFS channels for ETSI countries according to certification document. |
| AXG-6829 | All | All ePMP ac/ax Subscriber Module platforms are restricted to be used in AP PMP role for the following: SKUs: 53504 - 5 GHz Force 425 (ROW)53505 - 5 GHz Force 400C (ROW) 53512 - 5 GHz Force 425 (FCC) 53513 - 5 GHz Force 400C (FCC) 53520 - 6 GHz Force 4600C (ROW/FCC) 53536 - 5 GHz Force 4516 (ROW) 53537 - 5 GHz Force 4525 (ROW) 53538 - 5 GHz Force 4525L ROW) 53544 - 5 GHz Force 4516 (FCC)53545 - 5 GHz Force 4525 (FCC) 53552 - 6 GHz Force 4616 (ROW) 53553 - 6 GHz Force 4625 (ROW) 53560 - 6 GHz Force 4616 USB GPS Radio (FCC) 53561 - 6 GHz Force 4625 USB GPS Radio (FCC) |
| AXG-6843 | All | When DPI was enabled, a significant throughput degradation was observed. |
| AXG-6885 | All | Access Points (AP) UIs were not working if more than 25 Subscriber Modules (SM) were connected in WLR mode. |
Limitations
- NAT mode on SMs does not operate when SM is connected through SFP+ port.
- ePMP Force 4525 and ePMP Force 4525L are not accessible from Ethernet interface if the devices are switched to Spectrum Analyzer mode and the scanning is in progress. The access is restored after the scanning is complete.
