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Specifying the Order of List Entries
Copyright © 2010, Juniper Networks, Inc.
A list or table entry in the configuration can contain multiple list key fields. For example,
in the routing table for a ScreenOS device, multiple fields (including IP address/netmask,
interface, next-hop, vsys, and so on) uniquely identify a particular route entry.
When configuring a device through NSM, you can enter most list or table entries in any
order. However, in some cases the order of list or table entries is significant to device
behavior. For example, in a routing policy or firewall filter, you define terms that are
analyzed sequentially. Also, when you create a named path in dynamic MPLS, you define
an ordered list of the transit routers in the path, starting with the first transit router and
ending with the last one.
NOTE: The ordering of list entries is a detailed point and of low significance to most
users. Skip this section if ordering of list entries is not significant to you.
To specify a sequence in which the list or table entry order matters, select the entry in
the template and then use the up and down arrows at the top of the dialog box. The up
and down arrows appear on any table where the order of parameters is important and
can be altered. Figure 55 on page 209 shows an example.
Figure 55: Up and Down Arrows for Changing the Sequence of a List
NSM allows you to add, insert, or delete entries in ordered lists. NSM uses some simple
rules to establish the order of configuration entries when they are changed on the device
and then imported into NSM, or changed in the NSM template, and then updated on the
device.
The default order of entries in a list depends on their order in the template, their order in
the device object, their order in a configuration group, and their order on the device itself.
For details about how the order of list entries in a template is affected by configuration
groups, see "Using Configuration Groups" on page 221. The following sections describe
Chapter 5: Configuring Devices
209
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