/stats/slb/dns
DNS SLB Statistics
The DNS statistics displayed with this command are Layer 7 DNS statistics. These Layer 7 statistics are used by the system to decide how to operate its Layer 7 load balancing.
Note: In order to allow gathering these DNS statistics, the DNS SLB must be enabled using the /cfg/slb/virt #/service 53/dnsslb command (see /cfg/slb/virt <virtual server ID> Virtual Server SLB Configuration).
 
Total number of TCP DNS queries: 0
Total number of UDP DNS queries: 0
Total number of invalid DNS queries: 0
Total number of multiple DNS queries: 0
Total number of domain name parse errors: 0
Total number of failed real server name matches: 0
Total number of DNS parsing internal errors: 0
The Layer 7 DNS SLB statistics are described in the following table:
 
DNS SLB Statistics (/stats/slb/dns) 
Statistic
Description
Total number of TCP DNS queries
The total number of DNS queries received over TCP transport.
Total number of UDP DNS queries
The total number of DNS queries received over UDP transport.
Total number of invalid DNS queries
The total number of malformed DNS queries received.
Total number of multiple DNS queries
The number of DNS queries that contain more than one domain name to be resolved. Currently, only one domain name resolution per request is supported.
Total number of domain name parse errors
The total number of DNS queries with short or invalid domain names received.
Total number of failed real server name matches
The number of times the user failed to find a real server that has the same Layer 7 strings that match the domain name to be resolved.
Total number of DNS parsing internal errors
The number of out of memory and other unexpected errors the user receives while processing the DNS query.