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Cambium Networks ePMP 1000 Software Release 2.6

System Release 2.6 adds the following:

  • 5 MHz and 10 MHz Support in ePTP mode
  • 5 MHz and 10 MHz Support in AP and SM WiFi Modes
  • Licensing Support to Expand an AP Lite from 10 SMs to 120 SMs
    • The ability for the AP to receive SM VLAN VSAs from a RADIUS server and pass these along to the SMs:
    • Data VLAN and Priority
    • Management VLAN and Priority
    • Separate Management VLAN and Priority
    • Membership VLANs
    • Multicast VLAN
    • VLAN Mapping C-VLAN to S-VLAN
  • GUI User Authentication Extended to RADIUS
    • Local GUI Authentication is the default
    • Ability to select Remote RADIUS Server Authentication Only
    • Ability to select Remote RADIUS Server Authentication and Fallback to Local GUI Authentication
  • LLDP (Link Layer Discovery Protocol) support
    • The Link Layer Discovery Protocol (LLDP) is a vendor-neutral link layer protocol (as specified in IEEE
    • 802.1AB)l used by ePMP for advertising its identity, capabilities, and neighbors on the Ethernet/wired interface.
  • Separate Management IP Address Port Forwarding:
    • Ability to forward packets addressed to the Separate Management IP Address port
    • Ability to map a range of source ports to destination ports for both the Data Port Forwarding and
    • Separate Management IP Address Port Forwarding Tables
  • Wireless MAC Address Filtering for Network Entry:
    • Ability to specify the exact SM MAC addresses to permit for network entry, or
    • Ability to specify the exact SM MAC addresses to prevent from network entry
    • Ability to specify up to 120 entries
  • Distance to AP Displayed for Each Registered SM in AP -> Monitor -> Wireless
  • SNMP trap for failed registration
    • A new SNMP trap informs the network management system when an SM fails to register to the AP. The trap is named cambiumpmp80211NetworkEntryFailureTrap
  • Improved Interference Tolerance at the AP for On-Channel Interferers

Известные проблемы и ограничения (System Release 2.6)

Tracking Description / Workaround
10907 When in AP WiFi mode and the SM connected is an 802.11a SM, the downlink throughput can be lower by 20%.
10866 When switching channel bandwidth from 20 MHz to 5 MHz, the GUI will throw a warning that only Max Registration of 30 is allowed and saving the configuration will not be possible. Workaround is to edit the Max Registrations field under Configuration->Radio and save configuration.
10846 After performing a factory reset using the physical reset button on the unit, User defined RADIUS certificates are not deleted from the device. Workaround it perform a factory reset through the GUI under Tools->Backup/Restore.
10770 After a factory default through the GUI, user may not be able login into the GUI. Workaround is to reload the GUI in the browser.
10704 When editing the MAC Addresses entries in the Wireless MAC Filtering table using the configuration file upload, care must be taken to ensure MAC address format integrity. The ePMP device will not validate the format.
10702 When editing the Description field of the Wireless MAC Address Filtering table and saving, the wireless driver will be restarted resulting in the AP dropping all SMs and causing them to reregister.

Известные проблемы и ограничения (System Release 2.5.2)

Tracking Description / Workaround
10849 WPA2 Encryption Key validation does not accept "-" symbol. (Resolved in 2.6)
10798 Bridge table on AP is empty when there are more than 32 entries. (Resolved in 2.6)
10729 When registration to the primary AP fails the first time, the SM does not attempt to register to the primary AP in subsequent attempts. This results in the SM registering to an undesired AP (adjacent or back AP). (Resolved in 2.6)
10695 SM does not register to an alternate channel if the alternate channel is a non-DFS channel. (Resolved in 2.6)

Известные проблемы и ограничения (System Release 2.5.1)

Tracking Description / Workaround
10796 Incorrect memory allocation causes snmpd process to use an abnormal amount of CPU on the SM resulting in poor SM performance. (Resolved in 2.6)
An overload of ARP packets (>30K per second) from a PC connected to the SM can cause the SM to run out of memory. Alternately this issue can be caused by a DDOS attach on port 80 of the SM. (Resolved in 2.6)
10752 On rare occasion, management access to the SM is lost even though the SM continues to pass user traffic. A reboot of the SM is required to re-establish management access.
10725 On occasion 2.4 GHz Force 200 cannot be switched from SM mode to AP mode. (Resolved in 2.5.2)
10707 Uruguay, Vanuatu and Qatar country codes were missing from the Country drop down list. (Resolved in 2.5.2)
10683 2.4 GHz Force 200 were incorrectly locked to FCC region. (Resolved in 2.5.2)
10662 During a wireless link test, uplink user traffic does not pass during the downlink portion of the Wireless Link Test. (Resolved in 2.6)
10647 Cambium ID is not removed once the device is in cnMaestro's onboarding queue and deleted before approval. (Resolved in 2.5.2)
10653 cnMaestro Remote Management Status is not displayed on the GUI for ePTP and Wi-Fi modes (Resolved in 2.5.2)
10630 On occasion, ePTP Slave does not register to ePTP Master's Alternate channel after a radar event. (Resolved in 2.5.2)
10627 After setting the Uplink Max Rate to a value lower than MCS15, the GUI still displays MCS15 even though the device has accepted the change. (Resolved in 2.5.2)
10580 On rare occasions, in Standard WiFi mode, the "Available APs" table under Monitor- >Wireless page on the SM is empty. (Resolved in 2.5.2)
10550 Garbage logs written to syslog console. (Resolved in 2.5.2)
10489 When using 20 MHz DFS channels and 2.5ms frame size, SMs may take up to 10 minutes to register. (Resolved in 2.5.2)
10481 When an invalid channel is set through SNMP, it may cause the radio to reboot. (Resolved in 2.5.2)
10384 Under extremely high interference/noise, ePTP Slave may crash resulting in a reboot of the SM. (Resolved in 2.5.2)

Известные проблемы и ограничения (System Release 2.5)

Tracking Description / Workaround
10746 OS Command Injection Vulnerability Using SNMP (Resolved in 2.6)
10380 On occasion upon boot up, AP sends DHCP request on the wireless interface in addition to the Ethernet interface. (Resolved in 2.5.1)
10371 2.4 GHz AP will not use more than 20 dBm TX power when in Standard WiFi mode. (Resolved in 2.5.1)
10363 RFC1213 OID . (ifSpeed) always returning "10000000" regardless of what the speed is configured/negotiated to. (Resolved in 2.5.1)
10344 OID numbers for cambiumAPConnectedSTAEntry table incremented by 1 in Release 2.5. (Resolved in 2.5.1)
10332 SMs take longer than normal to register to AP when using 2.5ms frame size. (Resolved in 2.5.1)
10326 When AP is in Standard WiFi mode and using 5.2 GHz, it incorrectly uses 33 dBm EIRP instead of 36 dBm in FCC regions. (Resolved in 2.5.1)
10321 Ping utility (under Tools->Ping) will not work if buffer size is larger than 1472 bytes. (Resolved in 2.5.1)
10301 When in ePTP mode, the radio would stop transmitting data after a few days of normal operation, requiring a reboot. (Resolved in 2.5.1)
10283 In Flexible mode, when sending bidirectional TCP data, the throughput may degrade up to 17% on the Uplink compared to previous releases. (Resolved in 2.5.1)
10276 When an ePMP SM is switched to Standard WiFi mode, the "Distance To AP" under Configuration->Radio incorrectly gets set to 52 miles. Workaround is to manually adjust this parameter to the correct distance of SM to the AP. (Resolved in 2.6)
10273 SMs occasionally do not register issue with Reason: INVALID SECURITY KEY in PTP TDD and ePTP modes. (Resolved in 2.5.1)
10271 When the SM is in ePTP or Standard WiFi mode, the web interface incorrectly displays "Subscriber Module Priority" field. SM Priority is supported in TDD mode only and this issue has no impact on the normal operation of the system.
On rare occasion, SM crashes when using 2.5ms frame when the SM is under heavy interference. (Resolved in 2.5.1)
10026 'home' user can execute ping/traceroute and download full device configuration. (Resolved in 2.6)
5405 ePMP radios may be exposed to the open internet when using white IP addresses. This makes the radio vulnerable to attacks. (Resolved in 2.5.1)

Известные проблемы и ограничения (System Release 2.4.3)

Tracking Description / Workaround
10127 On occasion, multicast traffic may not be forwarded by the AP on the downlink. (Resolved in 2.5)
10112 Periodic disconnects of the SM are in TDD mode when the SM is under high interference. (Resolved in 2.6)
10099 When the AP is SNMP polled for the list of registered SMs, the SNMP agent returns an empty string until the web interface is pulled up. (Resolved in 2.5)
10060 When special characters such as apostrophes are used in Device Name, System Name and System Description fields and spaces are used in AP SSID field, upgrade from 2.4.2 to 2.4.3 results in configuration errors. Field validation checks have been added to the web interface to warn the users of invalid special characters for the impacted fields. (Resolved in 2.5)
10032 When Separate Management IP is enabled and the SM is configured as a PPPoE client, it is possible to access the management interface of the SM through its Wireless IP. (Resolved in 2.5)
On occasion, when an ePTP Slave disconnects, it may not register back to its Master because the Master has a stale session still active and cannot allow a second session. The issue also manifest itself into a scenario where there is no data passing in the Uplink or Downlink direction of the link. A reboot of the Master or Slave resolves the issue. (Resolved in 2.6)
9951 On occasion, pings are lost when continuously pinging the SM from the AP. The ping loss can occur for a period of 30-60 seconds before it operates normally. User traffic may also be lost during this time and a reboot of the SM may be required to recover the SM.
9911 List of available frequencies for country code Thailand is incorrect. (Resolved in 2.5)
9893 The transmitter output power displayed by the GUI varies significantly as the radio switches between management and data packets to take power measurements. (Resolved in 2.5)
9837 On release 2.4.3, the AP will not allow more than 106 SMs to register to it. (Resolved in 2.5)
9808 After changing the IP address of the ePMP radio, the GUI does not auto reconnect to the device using the new IP. As a workaround, type in the new IP address on the web browser to access the radio's GUI. (Resolved in 2.5)
9655 When in ePTP and after several days of the link being up and functioning normally, the ePTP Slave may stop passing user traffic. (Resolved in 2.5)
9376 On occasion, when changing parameters under Configuration->Network (and Saving), the device may take up to 60 seconds to apply the changes. (Resolved in 2.5)
9333 On the GUI, where the page has internal vertical scroll bars (ex: Monitor->Performance), the table may overlap the page footer. There is no impact to normal operation of the system. (Resolved in 2.5)

Software Release 2.6:


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