Release Notes
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1. alvarion BreezeMAX 3000 FDD Product Release 6 0 Release Note January 2009 Alvarion Ltd www alvarion com ow alvanion Your Open WiMAX Choice General This document details the main features known limitations version compatibility bug fixing information and the documentation available for the BreezeMAX 3000 FDD product release 6 0 It corresponds to the following software versions gt gt gt gt 3 7 0 14 of the NPU Network Processing Unit 3 7 0 14 micro base station 3 7 1 15 AU access unit 3 7 1 18 SU subscriber unit Introduction This release is based on SW version 3 6 of BreezeMAX 3000 and introduces new features in the product in all modules The new software version is named version 3 7 and is part of product release 6 0 Main Content and Features gt BreezeAPP A new core element enabling Call Admission Control for SIP based voice gateways over the BreezeMAX access network enabling 3 party SIP based voice gateways to have similar CAC as Alvarion s Voice Gateways that utilizes the proprietary DRAP protocol SNTP a simple NTP implementation for distributing the Coordinated Universal Time UTC by means of synchronizing the clock of the BreezeMAX NPU It makes use of two servers one primary and one secondary implementing a keep alive mechanism to do the switch over in case of failure of a server PMTM The system supports the ability of collecting performance and tr2. potential PSU hardware signal fluctuations in case of a malfunctioning PSU In such cases the system would report properly on the failed PSU and continue to function steadily Problem fixed in AVU ACU status displayed in AlvariSTAR Open Errata Base Station gt gt AU ODU fails to initialize when IF cable is disconnected and connected again within 10 seconds In cases where an AU channel was disabled and the AU was reset first attempt to re enable the channel will fail although channel will report enabled However second attempt to enable this channel will succeed Under heavy radio traffic the AU may not complete the TFTP transfer to the NPU and hence the information from this AU is not embedded into the final XML report Alvarion Ltd www alvarion com ow alvanion Your Open WiMAX Choice When the bandwidth available at the Base Station backbone is less than the traffic at the wireless side the prioritization of service types may not be maintained an RT service may not be prioritized as a BE service When a Micro Base Station sector is fully loaded 250 CPEs and operates under heavy traffic if an additional CPE association is attempted the AU will show instability issues that can lead to reset In rare cases when NPU Ethernet data port speed is configured to 1Gbps the NPU may halt It is recommended to use a configuration of 100Mbps in this case The SNMP agent may show instability problems under
3. step that are not related to each other but the AU works within a specific bandwidth gt Bridging unicast MAC addresses considered as multicast According to its design the NPU considers a MAC as multicast if the least significant bit in the first MAC byte is 1 gt The Base Station does not know about the sub domain or the multiple IP addressing using different VLANs When a multicast broadcast packet arrives to the NPU it retransmits it to all SUs The SUs generate one packet for each VLAN configured in its VLAN list gt While activating the new mode of QOS setting for DRAP voice signaling the NPU becomes less responsive for few minutes until if finishes configuring all DRAP sessions In this case also a message informing a successful setting will be on telnet after each connection is being modified This lasts only once after the initial activation gt Filtering limitations o In micro base station it is not possible to configure a mask for L2 filtering via telnet or serial port o In micro base station L3 L4 mask cannot be defined in the filtering rules via telnet or SNMP o L2 mask different from FF FF FF FF FF FF cannot be configured in the filtering rules for a micro BST If another mask is tried to be set when applying changes it is automatically modified to FF FF FF FF FF FF gt Licensing o The maximum number of CPEs allowed to be registered at the same time in the micro BST can only be increased from 50 to 150
4. the SU accessed from the NPU This is the same parameter as on the MAC menu While upgrading an active 2 Ch AU with active services to a 4 Ch AU it is necessary to upgrade the 2 Ch AU to version 3 6 or later and save the configuration using the same version as used by the 4 CH AU This configuration file can be applied later to the 4 channel AU and service will continue using the configuration file from the 2 Ch AU The maximum possible throughput for multicast connection forwarding rule is 2 5 Mbps for BreezeMAX PRO and PRO S CPEs and 4 5 Mbps for BreeezeMAX CPEs When testing Point to Point bi directional UDP traffic the ratio between downlink and uplink traffic may not be symmetric downlink traffic will take higher bandwidth than uplink traffic Frequency scanning may be locked on frequency which is 125KHz different from the BS frequency In this case performance is not affected it is compensated by DSP In any case to obtain the best frequency scanning performance to configure start and stop frequencies and to configure the channel spacing as available for the operator Alvarion Ltd www alvarion com a alvanion Your Open WiMAX Choice gt BER test should be run only if ALL SUs in the setup are running version 3 7 Otherwise these SUs or AU might reset gt When defining the Spectrum Analysis parameters the step is the delta in which the frequency is incremented Starting from this there are two parameters bandwidth and
5. U installations it is necessary to check if the IF cable needs to be changed due to different power consumption More information is detailed in the installation section of the BST manual Installations of AU ODU HP may require using also a power feeder to provide the power for these units Instruction on exact power configuration PSU PIU and power feeder can be found in the manual Subscriber Units gt Frequency scanning and antenna select parameters have been updated to properly support APD and SU scanning This means that after 3 7 upgrade the SUSI antenna is automatically configured to external antenna If during 12 minutes no association occurs the SUSI antenna is changed to one configured in the older SW version 3 6 x 3 7 1 x will not import the values used in 3 6 1 x trial release configuration for scanning in such case default values are used Rebooting to older versions may cause loss of frequency parameters set by the later version gt In BreezeMAX PRO CPE units the following parameters are not present in the SU s monitor Serial Number RF Card HW Revision amp Boot Version gt Configured SU name must be in English characters otherwise it will not be discoverable by AlvariSTAR gt When downloading an upgrade software to SUs under micro base stations with a large number of SUs running in high load it is recommended to schedule the upgrade using AlvariSTAR with no more that 5 concurrent SUs ARQ gt Lim
6. affic monitoring indicators on a periodical regular basis 15 mins aggregates the information in a single standardized file which is than available for collection over ftp This feature is empowered by the new StarQUALITY solution from Alvarion to log monitor and analyze the data from these files BER test functionality manageable via telnet and AlvariSTAR available for several SUs Can be scheduled sequentially for several SUs one after the other per sector with concentrated report for all tests Spectrum analyzer base station receive provides a tool to measure how clean the channel is from interferences may scans several channels with start and stop frequency allowing measurement over channels of 1 75MHz 3 5Mhz and 7MHz This feature affects the service in the sector during the test SU Frequency Scanning officially released in this software release Adding the capability of SU frequency scanning and best AU selection The scanning is performed either over a range Alvarion Ltd www alvarion com alvarion Your Open WiMAX Choice of frequency with start stop and step frequency definition and or over a discrete list of up to 10 frequencies For the discrete list the scanning would be over all channel spacing gt SU association per AU channel support the ability in AlvariSTAR and telnet to support grouping and monitoring on ODU basis for the case of MMC Multi Modem Channel based on channel frequency d
7. ance Manual CPE IDU 1D and CPE ODU PRO Quick Installation Guide Si CPE Quick Installation Guide BreezeMAX FDD Troubleshooting Guide BreezeMAX FDD Traps and Alarms BreezeMAX FDD Firmware Upgrade Procedure BreezeMAX 3000 FDD Release Note Using the Multi Channel Modem MMC Feature Technical Note MIB Changes Technical Note BreezeMAX Getting and Loading Feature Licenses AlvariSTAR Getting and Loading Feature Licenses Alvarion Ltd 10 www alvarion com
8. and to 150 to 250 o After the tables associated to the maximum number of CPEs and their BW have been created delete the BW table and reboot the micro BW information should also disappear from Base Station License table gt After installing unlimited BW license to the BST the user must reset either the BST AU or the SU in order to change the operating status and receive the unlimited BW gt After first enabling the PMTM feature the first PMTM file sent by the AU is empty it is recommended to disregard this first partial period gt PMTMis a BMAX FDD v3 7 feature and for proper functionality both NPU and AU must be upgraded to this version The CPE version does not matter in this respect When using combined versions of AUs 3 6 and 3 7 the XML file generated will no longer be standard gt Inside the PMTM files there might be inconsistencies in the different timestamps written in the XML header and footer as well as the timestamps in the collected counters area It is recommended to take the timestamp for the collected period from the file name Alvarion Ltd www alvarion com a alvarion gt Your Open WiMAX Choice If one ODU unit is already connected with traffic running through it and the second ODU unit is connected there is a small interference period of 350 milliseconds on the first ODU unit Traffic may be interrupted and some CPEs may re synch When installing HP ODU in existing or as replacement to OD
9. heavy stress testing leading to loss of management telnet and SNMP If the AU SW does not exist in the NPU and the AU is configured by telnet to load that inexistent version the AU may hang IP location aware implementation leaves the relay agent giaddr field IP address as 0 0 0 0 In case BS router is used also as a DHCP server it may interpret it as an attack and deny the DHCP option 82 packet coming from BreezeMAX In this case the router must be configured to recognize it as Trusted for such DHCP option 82 requests See as an example on Cisco site http slaptijack com networking allowing option 82 in cisco dhcp relay agents The PF servers and Voice domains disappear after uploading a backup of services and service profiles This happens both in the modular and micro base stations This phenomenon does not appear when a full backup is performed Subscriber units gt gt If ATPC is disabled and TX power is set below 10 dB the BreezeMAX PRO and PRO S CPE units might transmit with an inaccuracy of up to 5 cB When operating with MMC and SU frequency Scanning Best AU enabled only the IF channel with the best SNR out of the two IF Channels is part of the Best AU list The WEB monitor application does not ask for password after SU is reset while logged in Software download to BreezeMAX CPEs may fail if uplink traffic is higher than 2 5Mbps specifically per CPE When downloading a previous saved configurat
10. ifferentiation gt SNMP improvements This new features caches relevant SU parameters presented only at registration time With such proxy architecture future requests would be attended in a quick and efficient way by increasing the responsiveness reserving air link capacity and AU processing resources and having a better user experience from the AlvariSTAR point of view gt Full support in AlvariSTAR for provisioning DHCP 82 enabled service profiles by supporting definition of service groups gt Support in AlvariSTAR of frequency scanning parameters AlvariSTAR and AlvariCRAFT Support Version 3 7 is supported in the following NMS elements gt BreezeMAX Device Driver 5 1 0 16 gt AlvariCRAFT for BreezeMAX 5 0 0 29 gt AlvariSTAR Infrastructure 4 0 0 87 BreezeAPP Support Version 3 7 interoperates with the following BreezeAPP elements gt Policy Function PF version 14D or later gt Application Function AF version 16C or later Fixed Errata amp Improvements gt Bug in bridging table improving previous behavior of the modular base station The table containing the list of learnt MAC addresses was fully flushed after the aging time expired only those MACs showing no activity are candidates to be removed gt Generalized CID problem under scenarios in which the CPEs are continuously registering and deregistering into the system a resource allocation problem may occur in the communication processor subsys
11. ion file to a CPE the common name and location parameters are not updated Alvarion Ltd www alvarion com we alvanion N Your Open WiMAX Choice gt Alvarion s Voice Gateway will not work properly if Hybrid VLAN mode is enabled on one of the services passing through the VG Requires working in transparent VLAN mode Counters gt RbPMConnDLI counter is not working gt IfOutDiscards and iflnDiscards counters present inaccurate information gt Packet loss counting for service performance monitor Tx Vs Rx has a minor inaccuracy due to the sampling time of transmitted vs received counters Over long periods several minutes the inaccuracy is negligible Functional Considerations Base Station gt The management port is for local management only The management port may be used only when the network is different from the data port i e another router interface The restriction evolves from preventing the use of the same physical router MAC address for both data and management ports Configuring an IP address 0 0 0 0 for either the data or management port is not allowed Setting factory defaults should be done from local RS 232 as management IP address is changed during the process There might be situations during normal operation in which a slow response of the SNMP can be noticed due to timeout of SNMP requests from inactive SU s BS ID and BS mask appears also on the frequency scanning menu of
12. ited to 3 5MHz and 1 75MHz channel BW gt Limited to 256 SUs gt If service QOS profile changes priority queue ARQ will be immediately effective only next time connection will be established o E g changing from NRT to RT ARQ will continue to be applied until next time the link to the SU is established gt Packets per second on UL is limited to 4500 pps 512Bytes average packet size is the point when throughout is not degraded gt When SUs are out of link capacity is reduced and therefore recovery is more exposed to loss due to traffic Alvarion Ltd www alvarion com wr ies Your Open WiMAX Choice gt Packet loss due to capacity problem cannot be recovered Therefore to avoid packet loss due to capacity the system should not work in congestion The packets discarded indication can indicate whether this is the situation Compatibility BreezeMAX software version is compatible according to the following tables 3 6 3 5 36 35 36 35 3 6 3 5 3 6 3 5 3 6 3 5 PRO S ae 3 6 3 5 3 6 3 5 PRO S 802 16e ready Si 802 16e ready Alvarion Ltd www alvarion com a ae A Your Open WiMAX Choice Documentation gt VV VV V VV VV VV VV WV BreezeMAX FDD Modular Base Station System Manual BreezeMAX FDD Micro Base Station System Manual BreezeMAX CPEs PRO and Si CPEs Product Manual Base Stations Modular amp Micro Installation amp Maintenance User Manual PRO CPE_S Installation amp Mainten
13. tem leading to denial of registration completion of the CPE gt PPPoE forwarding rule changing the default value of the PPPoE service profile forwarding rule unknown policy was set to reject instead of unknown Alvarion Ltd www alvarion com we alvanion Your Open WiMAX Choice Changing the Management VLAN will now be effective following unit reset This will ensure that such a change when done through remote management via the data port would not lead to management loss The following timeouts have been adjusted in this release o APD T O 12 min o Frequency scanning T O 14 min o Network entry T O 16 min During NPU start process the flash memory is cleaned from temporary files This avoids malfunctions such as o SU changing registration status from permanent to temporary after upgrade o Base station not being able to create backups o PMTM files not created due to lack of space When downlink packets are received from DHCP server when option 82 is enabled the destination MAC address was changed from broadcast to unicast This behavior was fixed now the MACs remain unchanged broadcast In some cases CPE network entry was unsuccessful GENERALIZED CID error this typically occurred when the CPE was trying to connect under interference conditions leading to services loss The default antenna select for SUSI has been changed from antenna 3 to external antenna PSU problem the system is more robust against
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