User Manual

Chapter 3 - Operation and Administration of the Macro BTS Managing BSs
4Motion 639 System Manual
3.9.25 Managing the BS ASN-GW Load Balancing
Parameters
The Load Balancing feature provides a WiMAX operator with the capability to
build resilient ASN infrastructure using ASN-GW redundancy. Every BS is
provisioned with a list of redundant ASN-GWs (pool). The BS applies round-robin
mechanism in order to pick an Authenticator for each MS that performs initial
network entry. This should eventually distribute the load between Anchor
ASNGWs. Geographical site backup can be achieved by using different priority of
ASN-GW pools (Authenticator "metric").
At the unit (NPU) level, up to two pools (with different priorities), each with up to
10 ASN-GWs, can be defined (see “Managing the BTS Load Balancing Parameters”
on page 227). Each BS defined in the unit will “inherit” these pools. It should be
noted that the ASN-GW defined in the BS as the default authenticator (see
“Managing Authentication Relay Parameters” on page 592) will be automatically
added to Pool1 that is the higher priority pool (if not included already).
At the BS level, you can enable/disable the use of each of the two pools. Note that
if both pools are disabled, or if the enabled pool(s) are empty, the ASN-GW load
balancing feature is disabled and only the default authenticator will be used.
This section includes:
 “Enabling the ASN-GW Load Balancing Configuration Mode”
(Section 3.9.25.1).
 “Enabling/Disabling an ASN-GW Load Balancing Pool” (Section 3.9.25.2).
 “Restoring the Default Configuration of ASN-GW Load Balancing Pools”
(Section 3.9.25.3).
 “Displaying Configuration Information for ASN-GW Load Balancing Pools”
(Section 3.9.25.4).
3.9.25.1 Enabling the ASN-GW Load Balancing Configuration Mode
To configure the ASN-GW Load Balancing parameters, first enable the ASN-GW
Load Balancing configuration mode. Run the following command to enable the
ASN-GW Load Balancing configuration mode.
npu(config-bs-66053)# asNGWLoadBalancing