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18 ServerIron ADX Advanced Server Load Balancing Guide
53-1002435-03
Configuring SIP SLB
1
FIGURE 6 Single TCP connection for each SIP request
Client side: Connection reuse with Mega Proxy client
Figure 7 shows several SIP requests being initiated by a Mega Proxy client. The Mega Proxy uses a
single TCP connection to send all these requests. Each of these requests is identified using a
unique SIP Call-ID. The ServerIron ADX separates these requests and load balances them among
different back-end proxy servers.
SIP phone
SIP phone
TCP Connection
TCP Connection
SIP Proxy Server
SIP Proxy Server
Call-ID2...
Call-ID1...
ServerIron
Call-ID1...
Call-ID2...