User manual

SM User Manual January 2004
Software Release 4.1
Feature Availability
Canopy AES products operate on the same software as DES products. Thus feature availability
and functionality are and will continue to be the same, regardless of whether AES encryption is
enabled. All interface screens are identical. However, when encryption is enabled on the
Configuration screen
• the AES product provides AES encryption.
• the DES product provides DES encryption.
Field-programmable Gate Array
Canopy AES products and DES products use different FPGA (field-programmable gate array)
loads. However, the AES FPGA will be upgraded as needed to provide new features or services
similar to those available for DES products.
Signaling Rates for Backhaul Modules
DES BHs are available in both 10-Mbps and 20-Mbps signaling rates. AES BHs are available with
only a 10-Mbps signaling rate.
Upgradeability
Canopy DES products cannot be upgraded to AES. To have the option of AES encryption, the
network planner must purchase AES products.
Interoperability
Canopy AES products and DES products do not interoperate when enabled for encryption. For
example, An AES AP with encryption enabled cannot communicate with DES SMs. Similarly, an
AES BH timing master with encryption enabled cannot communicate with a DES BH timing slave.
However, if encryption is disabled, AES modules can communicate with DES modules.
4.2 BANDWIDTH MANAGEMENT
Each AP controls SM bandwidth management. All SMs registered to an AP receive and use the
same bandwidth management information that is set in the AP where they are registered.
The Canopy software uses token buckets to manage the bandwidth of each SM. Each SM
employs two buckets: one for uplink and one for downlink throughput. These buckets are
continuously being filled with tokens at a rate set by the Sustained Data Rate variable field in the
AP.
4.2.1 Bandwidth and Authentication Manager (BAM)
Canopy offers the Bandwidth and Authentication Manager (BAM) to manage bandwidth individually
for each SM registered to an AP. BAM allows the setting of Sustained Uplink Data Rate, Sustained
Downlink Data Rate, Uplink Burst Allocation, and Downlink Burst Allocation for the individual SM.
BAM also provides secure SM authentication and user-specified DES encryption keys. BAM is an
optional Canopy software product that operates on a networked PC.
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