Using the HP DTC 16RX Manager

104

DNS conﬁguration

Each line of the ﬁle may be in one of the following different formats:

• The A (Address) format associates an IP address with an Internet Services name

• The TXT (TeXT) format associates any text string with an Internet Services

name

• The WKS (Well Known Service) format adds secondary information to the IP

address.

For Routable AFCP to work, all three formats must be used.

The A format associates the IP address of a remote DTC with the NS nodename of

that DTC (attached to the Internet Services extension of a front-end DTC).

The TXT format supplies the NS name of the host, so that the front-end DTC can

ﬁnd the host’s LAN address using the Probe protocol.

The WKS format associates the IP address of the front-end DTC with the Internet

Services name of the HP 3000 host system, and also deﬁnes the transport protocol to

be used. The transport protocol must be 17 (UDP protocol).

The following should be noted:

• A DTC’s NS name should not contain underscores if it is to be used for Routable

AFCP. A host’s NS name may contain underscores, but its Internet Services

name or alias in the WKS record should not contain underscores.

• If the DNS has been configured for a certain front-end DTC but the front-end

functionality of that DTC is not enabled, remote DTCs may try to use the DTC

as a front-end, in which case the connection will fail.

Examples Following is an example of DNS conﬁguration for Routable AFCP, showing the

lines entered in the text ﬁle.

# DTCs list

RDTCName.DTCArpaDomain in A RDTC_IP@

#MPE ix list

hostName.DTCArpaDomain in WKS FEDTC_IP@ 17

#Front End/MPEix Application

hostName.DTCArpaDomain in TXT “RAFCP_HOST=hostNSName”

where: