Forum Discussion

quattroginger's avatar
quattroginger
Icon for Nimbostratus rankNimbostratus
Nov 26, 2019

npath troubleshooting

i have npath configured where the VIP, both pool members and self IP are within the same subnet. i believe i am seeing what i should through a tcpdump. i see the SYN from the client, and the ACK from...
application delivery
BIG-IP
LTM
Simon_Blakely's avatar
Simon_Blakely
Icon for Employee rankEmployee
Nov 26, 2019

Is your virtual a fastl4 virtual with no SNAT with a profile that allows Loose Initiation and Loose Close?

  • quattroginger's avatar
    quattroginger
    Icon for Nimbostratus rankNimbostratus
    Nov 27, 2019

    i used the iapp to build it out but it looks like Loose Close is enabled but Loose Initiation is not.

    • Simon_Blakely's avatar
      Simon_Blakely
      Icon for Employee rankEmployee
      Nov 27, 2019

      If it is truly an npath configuration, you will need Loose Initiation, as the BigIP will not see the [SYN,ACK] from the pool member to complete the connection initiation.

    • quattroginger's avatar
      quattroginger
      Icon for Nimbostratus rankNimbostratus
      Nov 27, 2019

      thanks. i will make the change and report back results.