Using The Dynamic Dns Function - Ricoh SP C400DN User Manual

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.
344