WAN Traffic Manager
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WAN Traffic Manager
WAN Traffic Manager (WTM) lets you manage replication traffic across WAN links, reducing
network costs. WAN Traffic Manager is installed during the Novell
®
eDirectory
TM
installation and
consists of the following elements:
• WTM
This resides on each server in the replica ring. Before eDirectory sends server-to-server traffic,
WTM reads a WAN traffic policy and determines whether the traffic will be sent.
• WAN traffic policies
These rules control the generation of eDirectory traffic. WAN traffic policies are text stored as
an eDirectory property value on a Server object, a LAN Area object, or both.
• WANMAN Novell iManager plug-in
This interface to WTM lets you create or modify policies, create LAN Area objects, and apply
policies to LAN areas or servers. When WTM is installed (as part of the eDirectory
installation), the schema includes a LAN Area object and a WAN Traffic Manager page on the
Server object.
WAN Traffic Manager (
wtm.nlm
on NetWare
®
or
wtm.dlm
on Windows) must reside on each
server whose traffic you want to control. If a partition's replica ring includes servers on both sides of
a wide area link, you should install WAN Traffic Manager on all servers in that replica ring.
IMPORTANT:
WAN Traffic Manager is not supported on Linux, Solaris, AIX, or HP-UX systems.
11.1 Understanding WAN Traffic Manager
Network directories, such as eDirectory, create server-to-server traffic. If this traffic crosses wide
area network (WAN) links unmanaged, it can needlessly increase costs and overload slow WAN
links during high-usage periods.
WAN Traffic Manager lets you control server-to-server traffic (over WAN links) generated by
eDirectory and control eDirectory traffic between any servers in an eDirectory tree. WTM can
restrict traffic based on cost of traffic, time of day, type of eDirectory operations, or any combination
of these.
For example, you might restrict eDirectory traffic over a WAN link during high-usage times. This
shifts high-bandwidth activities to off-hours. You might also limit replica synchronization traffic to
times when rates are low to reduce costs.
WAN Traffic Manager controls only periodic events initiated by eDirectory, such as replica
synchronization. It does not control events initiated by administrators or users, nor does it control
non-eDirectory server-to-server traffic such as time synchronization.
The eDirectory processes listed in the following table generate server-to-server traffic.
Summary of Contents for EDIRECTORY 8.8 - GUIDE
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