It seems that clear ipsec sa peer xxxxxx command has some bug

[ding qin]

I run the command clear ipsec sa peer xxxxxx  on ASA5515 , and then which caused that we couldn't access 8.8.8.8 . and after I deleted all sitetosite vpn configration, and rebooted the asa . The ASA returned normal.

so It seems that the command has some bug .

Thanks,

[balaji.bandi]

what is the ASA code you running, how did you come to conclusion it was a bug ?

[ding qin]

Because after I ran  "clear ipsec sa peer", it should not caused some issue. 

[balaji.bandi]

Technically that command only reset the tunnel, but we need to know what the ASA code you think have bug, did you see that in bug tool.

is your internet (8.8.8.8) go via  Tunnel ? we need to know more about your setup to advise what is wrong ?

[ding qin]

8.8.8.8 go via the route table , not this tunnel.I think the bug is related to the site to site VPN. the previous configuration was changed because we deleted all site-site vpns , and then restarted the devices , then it was fixed.