I am trying to set jumbo MTU for Cisco ASA 5585 and i did following.

asa1/pri/act(config)# mtu inside 9000

INFO: Jumbo frames should be enabled to receive packets more than 1500 MTU
      Use 'jumbo-frame reservation' command to turn on jumbo frame

INFO: TCP MSS may need to be adjusted using 'sysopt connections tcpmss'
      command to pass large TCP segments

Now it is saying you may need to set sysopt connections tcpmss I have notice in my old cisco ASA firewall has following setting because when we setup VPN IPsec with AWS they said do following recommended setting.

sysopt connection tcpmss 1379

Question is if i set sysopt connection tcpmss 9000 does it going to break anything in relation of IPsec tunnel?

I am trying to set jumbo MTU for Cisco ASA 5585 and I did following:

asa1/pri/act(config)# mtu inside 9000

INFO: Jumbo frames should be enabled to receive packets more than 1500 MTU
      Use 'jumbo-frame reservation' command to turn on jumbo frame

INFO: TCP MSS may need to be adjusted using 'sysopt connections tcpmss'
      command to pass large TCP segments

Now it is saying you may need to set sysopt connections tcpmss. I have noticed in my old Cisco ASA firewall it has the following setting because when we setup VPN IPsec with AWS they said do following recommended setting:

sysopt connection tcpmss 1379

Question is if I set sysopt connection tcpmss 9000 is it going to break anything in relation to the IPsec tunnel?