<description>Ask client for MPPE - do not fail on reject</description>
</valueHelp>
<valueHelp>
<format>require</format>
<description>Ask client for MPPE - drop connection on reject</description>
</valueHelp>
<constraint>
<regex>^(deny|prefer|require)$</regex>
</constraint>
</properties>
<defaultValue>prefer</defaultValue>
</leafNode>
<leafNode name="lcp-echo-interval">
<properties>
<help>LCP echo-requests/sec</help>
<constraint>
<validator name="numeric" argument="--positive"/>
</constraint>
</properties>
<defaultValue>30</defaultValue>
</leafNode>
<leafNode name="lcp-echo-failure">
<properties>
<help>Maximum number of Echo-Requests may be sent without valid reply</help>
<constraint>
<validator name="numeric" argument="--positive"/>
</constraint>
</properties>
<defaultValue>3</defaultValue>
</leafNode>
<leafNode name="lcp-echo-timeout">
<properties>
<help>Timeout in seconds to wait for any peer activity. If this option specified it turns on adaptive lcp echo functionality and "lcp-echo-failure" is not used.</help>