Appendix

Using the Dynamic DNS Function

Dynamic DNS is a function which dynamically updates (registers and deletes) records (A record and PTR record) managed by the DNS server. When a DNS server is part of the network environment to which this printer, a DNS client, is connected, records can be dynamically updated using this function.

Updating

Updating procedure varies depending on whether the printer IP address is static or acquired by DHCP.

Note

When the dynamic DNS function is not used, records managed by the DNS server must be updated manually, if the printer's IP address is changed.

To update the record using the printer, the DNS server has to have one of the following:

No security settings made.

If security settings are made, an IP-specified client (this printer) permits updating.

For a static IP setting

If the IP address or host name is changed, the A and PTR records are updated. If the A record is registered, CNAME is also registered. CNAMEs that can be registered are as follows:

Ethernet and IEEE 802.11b

RNPXXXXXX (XXXXXX represents the last 3 hexadecimal bytes of the MAC address)

For DHCP settings

As a substitute for the printer, the DHCP server updates the record, and one of the following occurs:

When the printer acquires the IP address from the DHCP server, the DHCP server updates the A and PTR records.

When the printer acquires the IP address from the DHCP server, the print-

11 er updates the A record, and the DHCP server updates the PTR record. If the A record is registered, CNAME is also registered. CNAMEs that can be registered are as follows:

Ethernet and IEEE 802.11b

RNPXXXXXX (XXXXXX represents the last 3 hexadecimal bytes of the MAC address)

Important

Dynamic update using message authentication (TSIG, SIG(0)) is not supported.

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