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Piotr_Lewandows
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Jun 05, 2017

TCP profile stats for client and server context

Hi,

Just did some test on VS without oneconnect and separate client and server TCP profile.

I wonder what exactly means Open, Accepted and Established depending on context.

Stats for client context profile:

Connections
  Open                              1
  Current in CLOSE-WAIT/LAST-ACK    0
  Current in FIN-WAIT-1/CLOSING     0
  Current in FIN-WAIT-2             0
  Current in TIME-WAIT              0
  Accepted                          1
  Not Accepted                      0
  Established                       0
  Failed                            0
  Expired                           0
  Abandoned                         0

server context:

Connections
  Open                              1
  Current in CLOSE-WAIT/LAST-ACK    0
  Current in FIN-WAIT-1/CLOSING     0
  Current in FIN-WAIT-2             0
  Current in TIME-WAIT              0
  Accepted                          0
  Not Accepted                      0
  Established                       1
  Failed                            0
  Expired                           0
  Abandoned                         0

For session table entries:

Sys::Connections
10.128.11.3:12346  10.128.11.51:80  10.1.20.100:12346  10.1.20.11:80  tcp  29  (tmm: 2) none
Total records returned: 1
Sys::Connections
10.128.11.3:12346  10.128.11.51:80  10.1.20.100:12346  10.1.20.11:80  tcp  29  (tmm: 2) None

Why for:

  • Client context Open and Accepted is reported
  • Server context Open and Established is reported

Accepted means only 3WHS performed in client context, never in server context?

Established can be only for successful 3WHS between BIG-IP and member in server context, never in client context? Or only when there there are matching client and server flows in session table?

Piotr

1 Reply

  • Hi Piotr,

     

    Yes, "Accepted" is for the clientside three-way handshake, and "Established" is for the serverside 3WHS.