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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