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Short Name Resolution Methods
Table 2-2
Short Name
Resolution
Method
eDirectory
Hosts File
DNS
SLP
Specific setup instructions for each of these short name resolution methods will be provided in
Chapter 3, "Setting Up a Domain and Post Office in a NetWare Cluster," on page
2.8 Deciding How to Install and Configure the
Agents in a Cluster
There are several cluster-specific issues to consider as you plan to install the NetWare MTA and
POA in your clustered GroupWise system:
Section 2.8.1, "Planning Secondary IP Addresses and Cluster-Unique Port Numbers for Agents
in the Cluster," on page 29
Section 2.8.2, "Determining Appropriate Failover Paths for the Agents," on page 31
Section 2.8.3, "Deciding Where to Install the Agent Software," on page 31
28
GroupWise 8 Interoperability Guide
Description
You can use eDirectory to resolve short names into specific network addresses.
However, when using eDirectory for short name resolution, you must remember to
consider current context in the name resolution process. eDirectory short name resolution
works only if your current context is the same as the context of the eDirectory object you
need to access.
Windows uses the following files when performing short name resolution at the
workstation:
Windows XP\Vista:
\winnt\system32\drivers\etc\hosts
Using these files at the Windows workstation is not a preferred method for TCP/IP name
resolution (except perhaps for the administrator's workstation).
However, whenever you cluster-enable a volume, you should add its virtual server to the
sys:\etc\hosts
file of all nodes in the cluster.
Perhaps the most common short name resolution option is Domain Name Service (DNS).
As with the
hosts
file, it is good practice to place all of your virtual servers into DNS.
For short name resolution to work using DNS, the client workstation must either belong to
the same DNS zone (such as provo.novell.com) as the cluster resource, or the cluster
resource zone must be configured in the client's DNS suffix search path under TCP/IP
settings for the workstation.
The underscore (_) character is part of default cluster-related object names. Because it is
not supported by the DNS RFC, some DNS name servers cannot resolve default cluster-
related object names.
NetWare 6.5 uses Service Location Protocol (SLP) to advertise service information
across TCP/IP-based networks, which provides short name resolution of TCP/IP-based
cluster resources within the network. On NetWare 6.5, Novell Cluster Services
propagates virtual server information into SLP by default.
41.
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