When a network supports Dynamic DNS (DDNS), Intel AMT will update the DNS server with its IP addresses. Intel AMT gets the DNS server IP either from DHCP or from a static setting. Intel AMT will update the DNS zone with both IPv4 and IPv6 addresses. The Intel AMT DDNS feature only supports forward look-up non-secure DNS zones. The DDNS mechanism works when Intel AMT has a dedicated FQDN (both IPV4 and IPv6 addresses) and also when it shares an FQDN with the host (IPv4 addressing only). Intel AMT does not support a configuration with shared FQDN + DDNS enabled + IPv6.
Starting with Release 6.0 the Intel AMT FQDN can be either shared (i.e., the same as the host FQDN) or dedicated. The Intel AMT FQDN consists of two fields: its host name and its domain name. When the FQDN is shared, both must be the same as the host. In a dedicated FQDN, at least one of the two fields must be different from the host.
The HostOSFQDN is read only – It represents the OS Host FQDN.
The DDNS settings are part of the AMT_GeneralSettings object. See Get DDNS Settings and Set/Get General Network Settings.
The settings include:
|
Property |
Description |
|
DDNSTTL |
The TTL of a record in the DNS zone (in seconds) |
|
DDNSPeriodicUpdateInterval |
Defines the interval that Intel AMT sends DNS updates to the DNS server. Units are minutes. A value of 0 disables DNS notifications. The minimum allowed value other than 0 is 20 minutes. The default value for this property is 1440 minutes (one day). |
|
DDNSUpdateEnable |
True or False: enables the DDNS update mechanism. |
The DDNS settings are modifiable on the MEBx AMT Names Settings page and on the WebUI System Names Settings page.
The following table shows the conditions when Intel AMT updates a DNS server using the DDNS client.
|
|
Shared IPv4 (Static IP) |
Shared IPv4 (DHCP) |
Dedicated IPv4 (Static IP) | |||
|
IPv6 Enabled |
IPv6 Disabled |
IPv6 Enabled |
IPv6 Disabled |
IPv6 Enabled |
IPv6 Disabled | |
|
Shared FQDN |
Intel AMT updates DNS records when the host driver is down except for AAAA records (IPv6) |
Intel AMT updates DNS records when driver down |
Intel AMT updates DNS records when the host driver is down if DHCPv4 Option 81 doesn't have S bit except for AAAA records (IPv6) |
Intel AMT updates DNS records when driver down if DHCPv4 Option 81 does not have S bit |
not supported |
not supported |
|
Dedicated FQDN |
Intel AMT updates DNS records |
Intel AMT updates DNS records |
Intel AMT updates DNS records if DHCPv4 Option 81 does not have S bit |
Intel AMT updates DNS records if DHCPv4 Option 81 does not have S bit |
Intel AMT updates DNS records |
Intel AMT updates DNS records |
|
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