Command Line Interface Reference Guide > The SLB Configuration Menu
/cfg/slb/advhc/health <health check ID>/dns
DNS Health Check Configuration
The following menu example is application-specific and includes only the application-specific commands. For all common commands, refer to cfg/slb/advhc/health <general> General Health Check Configuration.
 
[DNS Health Check <HC ID> Menu]
name - Set descriptive health check name
dns - Health Check Parameters Menu
protocol - Set health check protocol (TCP/UDP)
dport - Set application port
dest - Set destination address or hostname
inter - Set interval between health checks
retry - Set number of failed attempts to declare server down
restr - Set number of successful attempts to declare server up
timeout - Set max seconds to wait for response
downint - Set interval between health checks when server is down
invert - Copy health check
snat - Enable/disable source NAT (PIP) for this health check
copy - Copy health check
del - Delete health check
cur - Display current health check
 
DNS Health Check Menu Options (/cfg/slb/advhc/health <health check ID>/dns) 
Command Syntax and Usage
dns
 
Displays the DNS Health Check Parameters menu. To view this menu, see /cfg/slb/advhc/health <health check ID>/dns/dns DNS Health Check Parameters.
protocol
 
Sets the health check protocol (TCP/UDP).
Default: UDP
snat
 
Specifies whether the source IP used for this health check should be egress IP interface (disabled) or the NAT address configured for health checks on the egress IP interface (enabled).
Note: If this parameter is enabled but no NAT address is configured on the egress interface, the health check will fail.
Default: disabled