Manual Chapter : Source/Destination DAG (SP-DAG)

Applies To:

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BIG-IP LTM

  • 15.1.0, 15.0.1, 15.0.0, 14.1.2, 14.1.0, 14.0.1, 14.0.0, 13.1.3, 13.1.1, 13.1.0
Manual Chapter

Source/Destination DAG (SP-DAG)

The SP-DAG uses a hash of source IP (from client) and destination IP address (server). This mode should be used when source and destination ports are hardcoded (for example 5060). In that case, a BIG-IP system requires multiple client IP address or multiple server IP addresses. Keep in mind, most connections are initiated by the client and that's the "Source DAG" option. In this case, the "Destination DAG" could be a single IP, but the source client IP should have more that a single IP address.

Key Points

  • IP Address Based
  • Works best when number of clients is equal to or more than the number of TMMs in BIG-IP system.
  • Performance will be impacted if clients consist of only a few SIP Proxy connections. In this case the IP Address entropy will be too low to load balance the incoming packets across available TMMs.
Source/Destination DAG (SP-DAG) example
Source/Destination DAG (SP-DAG) example