Managing the Links between Domains and Post Offices
147
n
ov
do
cx (e
n)
22
Ju
n
e 20
09
Figure 10-3
Indirectly Linking Two Domains by Going through a Third Domain
Star Configuration
In a star configuration, one central domain is linked directly to all other domains in the system. All
other domains are indirectly linked to each other through the central domain.
Figure 10-4
Indirect Links through a Central Domain
If you have more than ten domains, you might want to designate the central domain as a routing
domain. The sole function of a routing domain is to transfer messages between other domains; it has
no post offices of its own. See
Section 41.3.1, “Using Routing Domains,” on page 646
.
The major drawback of the star configuration is that the central domain is a single point of failure.
Two-Way Ring Configuration
In a two-way ring configuration, each domain is directly linked to the next and previous domains in
the ring and indirectly linked to all other domains in the system.
Domain B
UNC Path
Mapped Drive
TCP/IP Indirect
Link
Domain A
Domain C
UNC Path
Mapped Drive
TCP/IP
Domain 3
Domain 6
Domain 1
Domain 2
Domain 4
Domain 5
