Scheduling
- Last Updated: October 4, 2023
- 2 minute read
- LoadMaster
- LoadMaster GA
- Documentation
Scheduling
Round Robin
This is the same principle as the normal LoadMaster with one exception - when using the nslookup command, by default, it checks for both IPv4 (A) records and IPv6 (AAAA) records, which actually sends out two requests.
If you have two sites:
- Request 1 - IPv4 A round robin to Site 1
- Request 2 - IPv6 AAAA round robin to Site 2
- Request 3 - IPv4 A round robin to Site 1
- Request 4 - IPv6 AAAA round robin to Site 2
When testing, clients looking for IPv4 always connect to Site 1 and clients looking for IPv6 always connect to Site 2. To help prevent this from occurring during testing, you can add an odd number of sites.
nslookup Troubleshooting
nslookup command:
c:\> nslookup <FQDN> <GEO address>For example:
c:\> nslookup geotest.lan 10.113.0.52
Response is:
Name: geotest.lanAddress: 10.10.10.10Commands for further testing:
Changes request type to IPv4 A record:
nslookup –query=AChanges request type to IPv6 AAAA record:
nslookup –query=AAAADIG command:
user@linux: dig <domain>user@linux: dig test.domain.comSearch for an FQDN:
user@linux: dig –t <record type> <FQDN>user@linux: dig –t A test.domain.comSearch for an A record type:
user@linux: dig –t <record type> <FQDN>user@linux: dig –t AAAA test.domain.comSearch for an AAAA record type:
user@linux: dig –t A <DNS server/ GEO> <domain>user@linux: dig –t A @10.113.0.54 test.domain.comSearch for an A record type against this DNS server or GEO (10.113.0.52).