How to fix this issue for CVE-2011-1473
Fix it where? Are you asking about a node downstream from an A10 device? Or are you asking about a fix on an A10 device....if so, what version of ACOS?
This CVE is currently in "Disputed" status as is....so might be something for what ever service you are using to fix.
It's from the A10 virtual-server vip address
TH3030S version 4.1.4-GR1-P9, build 69
Problem solved，Disable SSL renegotiation