Deferred Accept

Hi,

I wonder what statement form online help exactly means in relation to packet flow on BIG-IP (based on this image):

Specifies, when checked (enabled), that the system defers allocation of the connection chain context until the system has received the payload from the client.

When monitoring session table as well as tcp profile stats (after 3WHS finished but before first data packet send) only difference is in tcp profile stats:

• Deferred Accept enabled:

  • show sys connection cs-client-addr 10.128.11.3

    output: 10.128.11.3:12346 10.128.11.51:80 any6.any any6.any tcp 19 (tmm: 2) none

  • show ltm profile tcp [profile used by VS]

    output: Open 1, Accepted 1
• Deferred disbaled

  • show sys connection cs-client-addr 10.128.11.3

    output: as above

  • show ltm profile tcp [profile used by VS]

    output: Open 0, Accepted 0

So in both cases entry in session table is created - what part then is deferred? What exactly is connection chain context?

Piotr