AudioCodes Mediant 4000 SBC User Manual page 343

User's Manual
Parameter
Proxy Load Balancing Method
proxy-load-balancing-method
[ProxySet_ProxyLoadBalancin
gMethod]
Advanced
Classification Input
classification-input
[ProxySet_ClassificationInput]
Version 7.2
from any of the Proxies, the device goes through the list again
until a "live" proxy is located.
Enables load balancing between proxy servers of the Proxy Set.

[0] Disable = (Default) Disables proxy load balancing.

[1] Round Robin = A list of all possible proxy IP addresses is
compiled. This list includes all IP addresses of the Proxy Set after
DNS resolutions (including NAPTR and SRV, if configured). After
this list is compiled, the Proxy Keep-Alive feature (enabled by the
'Proxy Keep-Alive' and 'Proxy Keep-Alive Time' parameters in this
table) tags each entry as "offline" or "online". Load balancing is
only performed on proxy servers that are tagged as "online". All
outgoing messages are equally distributed across the list of IP
addresses. REGISTER messages are also distributed unless a
RegistrarIP is configured. The IP address list is refreshed every
user-defined interval (see the ProxyIPListRefreshTime
parameter). If a change in the order of the IP address entries in
the list occurs, all load statistics are erased and balancing starts
over again.

[2] Random Weights = The outgoing requests are not distributed
equally among the Proxies. The weights are received from the
DNS server, using SRV records. The device sends the requests
in such a fashion that each proxy receives a percentage of the
requests according to its' assigned weight. A single FQDN should
be configured as a proxy IP address. Random Weights Load
Balancing is not used in the following scenarios:

More than one IP address has been configured for the Proxy
Set.

The proxy address is not configured as an FQDN (only IP
address).

SRV is disabled (see the DNSQueryType parameter).

The SRV response includes several records with a different
Priority value.
Defines how the device classifies incoming IP calls to the Proxy Set.

[0] IP Address Only = (Default) Classifies calls to the Proxy Set
according to IP address only.

[1] IP Address, Port & Transport Type = Classifies calls to the
Proxy Set according to IP address, port, and transport type.
Note:

The parameter is applicable only if the IP Groups table's
parameter, 'Classify by Proxy Set' is set to Enable (see
Configuring IP Groups on page 326).

If more than one Proxy Set is configured with the same IP
address and associated with the same SIP Interface, the device
may classify and route the SIP dialog to an incorrect IP Group. In
such a scenario, a warning is generated in the Syslog message.
However, if some Proxy Sets are configured with the same IP
address but different ports (e.g., 10.1.1.1:5060 and
10.1.1.1:5070) and the parameter is configured to IP Address,
Port & Transport Type, classification to the correct IP Group is
achieved. Therefore, when classification is by Proxy Set, pay
attention to the configured IP addresses and this parameter.
343
17. Control Network
Description
Mediant 4000 SBC