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| Displaying GSLB for IPv6 configurations | 2 |
TABLE 22 | GSLB policy information (Continued) |
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This field... |
| Displays... |
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DNS | Indicates whether the GSLB ServerIron ADX removes IP addresses from the DNS | ||
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| response if those addresses fail a health check. This field can have one of the | |
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| following values: |
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•DISABLE: The ServerIron ADX does not remove the IP addresses from the DNS response.
•ENABLE: The ServerIron ADX removes IP addresses that fail a health check from the DNS response.
DNS | Indicates whether you have configured the ServerIron ADX to remove all IP |
| addresses except the “best” address from DNS replies. This field can have one |
| of the following values: |
| • DISABLE: The ServerIron ADX does not remove all addresses except the |
| best one. |
| • ENABLE: The ServerIron ADX removes all addresses except the best one. |
| NOTE: Even when this feature is enabled, if the GSLB policy does not result in |
| selection of a best address, the DNS reply can still contain more than |
| one address. |
| For more information, refer to “Configuring a |
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DNS override | Indicates whether DNS override is enabled. DNS override replaces the |
| addresses in a DNS reply with the “best” address from a list of addresses you |
| configure. This field can have one of the following values: |
| • DISABLE: The ServerIron ADX does not replace the addresses in DNS |
| replies with an address from a list you configure. |
| • ENABLE: The ServerIron ADX replaces the addresses in DNS replies with |
| an address from a list you configure. |
| For more information about DNS override, refer to “Enabling DNS override” on |
| page 198. |
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Modify DNS response TTL | Indicates whether the GSLB ServerIron ADX modifies the TTL in the DNS records |
| in DNS responses before sending the responses to the client’s DNS server. This |
| field can have one of the following values: |
| • DISABLE: The ServerIron ADX does not modify the TTLs. |
| • ENABLE: The ServerIron ADX modifies the TTLs. |
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DNS TTL | Indicates the value (number of seconds) to which the GSLB ServerIron ADX |
| changes the TTL in each DNS record in the DNS responses before sending them |
| to the client’s DNS server. |
| NOTE: If the Modify DNS response TTL field contains “DISABLE”, the ServerIron |
| ADX does not change the TTLs, regardless of the value in this field. |
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DNS check interval | Indicates how frequently the GSLB ServerIron ADX refreshes its zone and host |
| information with DNS servers. |
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Remote ServerIron ADX status | Indicates how frequently the remote ServerIron ADXs send status updates to the |
update period | GSLB ServerIron ADX through the GSLB protocol. |
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Session capacity threshold | Specifies how close to its maximum session capacity the site ServerIron ADX |
| (remote ServerIron ADX) can be and still be eligible as the best site for the |
| client. If a site ServerIron ADX exceeds the threshold, the site ServerIron ADX is |
| ineligible to be the best site. |
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Session capacity tolerance | Specifies the percentage by which the number of available sessions on the site |
| ServerIron ADX can differ from the number of available sessions on another site |
| ServerIron ADX and still be considered an equally good site. |
ServerIron ADX Global Server Load Balancing Guide | 233 |
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