1 GSLB error handling for unsupported DNS requests
•The final two GSLB messages in this example (the ones nearest the top of the log) indicate that the site ServerIron ADXs responded to the Layer 3 health check (IP ping).
Disabling and re-enabling traps
All traps, including GSLB traps, are enabled by default.
To disable a GSLB trap, enter a command such as the following:
ServerIronADX(config)# no
The command in this example disables the trap that occurs if a remote site ServerIron ADX fails its Layer 3 health check and its status therefore changes from “up” to “down”.
Syntax: [no] snmp-server enable traps <trap-type>
For GSLB, the trap type can be one of the following:
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GSLB error handling for unsupported DNS requests
The ServerIron ADX can perform GSLB on client queries for the following DNS record types:
•IPv4 address records (A records)
•Canonical Name records (CNAME records)
In many GSLB topologies, the GSLB ServerIron ADX
Similarly, when the GSLB ServerIron ADX receives a client query for unsupported DNS record types, such as IPv6 address records (AAAA records), Name Server records (NS records), or Mail Exchange records (MX records), the GSLB ServerIron ADX forwards the client query to the DNS server. The DNS server sends a response to the GSLB ServerIron ADX, which then forwards the response, unaltered, to the client.
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