ALL
<host>
Displays the entire contents of the DNS cache or a specific cache entry identified by host name or host IP address.
Note: SIP (Session Initiation Protocol) The most appealing thing about SIP is the promise of interoperability of telephones from propriety PBXs. SIP extends the foundation of open-standards from the Internet to messaging, enabling disparate computers, phones, televisions and software to communicate. SIP is a streamlined protocol, developed specifically for IP telephony. It is smaller and more efficient than H.323. SIP takes advantage of existing protocols to handle certain parts of the process. For example, Media Gateway Control Protocol (MGCP) is used by SIP to establish a gateway to connect to the PSTN system. SIP operates independently of the underlying network transport protocol and is indifferent to media. Instead, it defines how one or more participant's end devices can create, modify and terminate a connection whether the content is voice, video, data or Web-based. Using SIP, programmers can add new fragments of information to messages without compromising connections. is the only application that currently makes requests to keep resolved entries in the DNS cache.
Entering the command without a qualifier displays the entire cache.
System Response:
** DNS Cache **
DNS Cache is empty.
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