Lantronix 900-581 manual Quick Tour of XML Syntax, Declaration, Element Start and End Tags

4: Configuration Using XML

Note:

The name for each <configgroup> (specified with the name attribute) is the group name listed in the Web Manager XCR groups or with the "xcr list" CLI command. See the PremierWave EN User Guide for more information about the XCR groups.

An empty or missing <value> element in each present <configgroup> clears the setting to its default.

Quick Tour of XML Syntax

Declaration

The first line, <?xml version="1.0" standalone="yes"?>, is called the XML declaration. It is required and indicates the XML version in use (normally version 1.0). The remainder of the file consists of nested XML elements, some of which have attributes and content.

Element Start and End Tags

An element typically consists of two tags: start tag and an end tag that surrounds text and other elements (element content). The start tag consists of a name surrounded by angle brackets, for example <configrecord>. The end tag consists of the same name surrounded by angle brackets, but with a forward slash preceding the name, for example </configrecord>. The element content can also contain other "child" elements.

Element Attributes

The XML element attributes that are name-value pairs included in the start tag after the element name. The values must always be quoted, using single or double quotes. Each attribute name should appear only once in an element.

Figure 4-2shows an XML example which consists of a declaration (first line), nested elements with attributes and content.

Figure 4-2 XML Example

<?xml version=”1.0” standalone=”yes”?> <configrecord>

<configgroup name = “serial command mode” instance = “1”> <configitem name = “mode serial string”>

<value>disable</value>

</configitem>

</configgroup>

</configrecord>

The PremierWave EN uses the attributes in the following subsections to label the group configuration settings.

PremierWave EN Command Reference 15