variable TCP_WND_SIZE_OPTION on CSM

[David Martinez Garcia]

Hi guys.

I want to obtain the ACE command equivalent to CSM  variable TCP_WND_SIZE_OPTION command.

Also, I wuold like to know any recommendations about TCP windows size and scale on the ACE.

Thanks in advance!

[Kanwaljeet Singh]

Hi David,

So by default in ACE, TCP options are stripped before  they are forwarded to server. To allow them you need to specify connection pmap.

tcp-options {range number1 number2 {allow | drop}} | {selective-ack | timestamp | window-scale} {allow | clear | drop}

So for allowing window scaling you need to do:

tcp-options window-scale allow

And for setting the scaling factor you need to use:

set tcp window-scale number

Pasting the document link for your reference:

http://www.cisco.com/c/en/us/td/docs/interfaces_modules/services_modules/ace/vA5_1_0/configuration/security/guide/securgd/tcpipnrm.html#wp1010795

Let me know if you have any questions.

Regards,

Kanwal