Forum Discussion

rschwarz79's avatar
Jun 27, 2025
Solved

oneconnect (Source Prefix Lengt = None)

Hello Folks,

 

currently I am struggling with the following setting in OneConnect-Profile.

Source Prefix Length = None 

 

I couldn't found any information about "None". Every whitepaper is talking about 0 or other specific masks.

 

Is "None" == "0" == "0.0.0.0" or is "None" disable connection reuse although the profile was set on the VS?

 

 

Thanks a Lot

rschwarz

  • Hi rschwarz79​ 

    Source Prefix Length : Specifies the prefix length that you want to use as the source mask. The length must be the number of set bits in a bitmask, specifically, between 0 and 128 for IPv6, or between 0 and 32 for IPv4. The default is None. The system applies the value of this setting to the server-side source address to determine its eligibility for reuse. A mask of 0 causes the system to share reused connections across all source addresses. A mask of /32 (that is, all 1 values in binary) causes the system to share only those reused connections originating from the same source address. If SNAT is configured, the BIG-IP system performs SNAT address translation on the source IP address, and then applies the OneConnect source mask to the translated SNAT IP address to determine whether it is eligible to reuse an existing idle connection.

     

     

    • "None" = 0 (all zeros mask) for OneConnect Source Prefix Length.
    • This enables maximum connection reuse across all clients.
    • It does not disable OneConnect or connection reuse.

     

1 Reply

  • f51's avatar
    f51
    Icon for Cumulonimbus rankCumulonimbus

    Hi rschwarz79​ 

    Source Prefix Length : Specifies the prefix length that you want to use as the source mask. The length must be the number of set bits in a bitmask, specifically, between 0 and 128 for IPv6, or between 0 and 32 for IPv4. The default is None. The system applies the value of this setting to the server-side source address to determine its eligibility for reuse. A mask of 0 causes the system to share reused connections across all source addresses. A mask of /32 (that is, all 1 values in binary) causes the system to share only those reused connections originating from the same source address. If SNAT is configured, the BIG-IP system performs SNAT address translation on the source IP address, and then applies the OneConnect source mask to the translated SNAT IP address to determine whether it is eligible to reuse an existing idle connection.

     

     

    • "None" = 0 (all zeros mask) for OneConnect Source Prefix Length.
    • This enables maximum connection reuse across all clients.
    • It does not disable OneConnect or connection reuse.