Sip and call persistence specifications – Brocade Virtual ADX Server Load Balancing Guide (Supporting ADX v03.1.00) User Manual
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SIP SLB and call persistence
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CANCEL
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BYE
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OPTIONS
Additionally, the following methods are supported:
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SUBSCRIBE
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NOTIFY
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Other proprietary methods
SIP and call persistence specifications
The SIP server load balancing has the following specifications:
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By default, server selection is persistent on Call-ID.
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Pass-through SIP traffic from real SIP servers to SIP clients gets translated. The Virtual ADX
replaces the source IP (SIP server real IP) with Virtual IP (VIP).
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The Virtual ADX does not modify any of the SIP header fields.
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The Virtual ADX does not perform SIP-aware NAT.
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This implementation is based on RFC 3261.
NOTE
The Virtual ADX SIP SLB is not implemented as a SIP proxy server, but rather as a load balancer of
proxy or registrar traffic.