OSF DCE Administration Guide--Core Components

OSF DCE Administration Guide—Core Components

25.6.1.1 Advertising Global Servers

To assign a server to the global set of servers, you must advertise the server with the

dcecp dts conﬁgure command. Advertising the server simultaneously adds binding

information to the server’s CDS name and also adds the server’s entry to the cell proﬁle.

Since CDS and the cell proﬁle are available to every node in your network, DTS can

perform a lookup in the cell proﬁle to obtain the locations of nodes that it cannot reach

on the LAN.

The following command example shows how to advertise a server as a global server,

thereby registering it with CDS and entering it in the cell proﬁle:

dcecp> dts conﬁgure -global

The -global option designates that a server should be conﬁgured as a global server rather

than as a local server.

To remove a server’s designation as a global server, use the dts conﬁgure command, as

follows:

dcecp> dts conﬁgure -notglobal

This command unadvertises the global server, removing its entry from the cell proﬁle

and its binding information from its CDS name.

25.6.1.2 Assigning the Courier Role to Servers

Courier servers play an important role in maintaining synchronization between the

systems in separate parts of your network. A courier server requests a time value from at

least one global server at every synchronization. This procedure enables a courier server

to propagate times from remote systems to a LAN or local area, thereby keeping the

LAN in synchronization with all the other parts of the network.

There are three courier roles that you can assign to a server (the courierrole attribute),

as follows:

• backup

• courier

• noncourier

The default courier role for a global or local server at its creation is backup.

Use the courier setting for the courierrole attribute to designate a server as the primary

link to other portions of your network. Use the backup setting to designate a server as a

secondary link to other areas of the network. A backup courier is only effective if no

other courier is available on the LAN.

Note that there are no signiﬁcant processing or overhead penalties associated with the

backup courier role; you can designate one of the servers on a LAN as a courier, and

25 − 18 Tandem Computers Incorporated 124243