AudioCodes Mediant 4000 SBC User Manual page 369

User's Manual
Parameter
[ProxySet_IsProxyHotSwap]
Proxy Load Balancing Method
proxy-load-balancing-method
[ProxySet_ProxyLoadBalancin
gMethod]
Min. Active Servers for Load
Balancing
min-active-serv-lb
[ProxySet_MinActiveServersL
B]
Advanced
Classification Input
classification-input
Version 7.2
received).

[0] Disable = (Default) Disables the Proxy Hot-Swap feature. If a
failure occurs in te primary proxy, the device does not connect
with any other address (proxy) configured for the Proxy Set.

[1] Enable = The device sends SIP INVITE/REGISTER
messages to the first address listed in the Proxy Address table
that is configured for the Proxy Set. If a SIP response is received
and this response code is configured in the Alternative Routing
Reasons table (see Configuring SIP Response Codes for
Alternative Routing Reasons on page 516) for SBC, the device
assumes that the proxy is down and sends the message to the
next available proxy (address) in the list.
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 the minimum number of proxies in the Proxy Set that must
be online for the device to consider the Proxy Set as online, when
proxy load balancing is used.
The valid value is 1 to 15. The default is 1.
Note: The parameter is applicable only if proxy load balancing is
enabled (see the 'Proxy Load Balancing Method' parameter, above).
Defines how the device classifies incoming IP calls to the Proxy Set.

[0] IP Address Only = (Default) Classifies calls to the Proxy Set
369
17. Control Network
Description
Mediant 4000 SBC