May 2009
Intermediate to advanced
882 pages
22h 55m
English
Content preview from Cisco® Network Professional's: Advanced Internetworking Guide
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U
- U reference point
Reference point between a TE1 and an ISDN network. The U reference point understands ISDN signaling techniques and uses a 2-wire connection.
- UDP
User Datagram Protocol: A connectionless transport layer protocol in the TCP/IP protocol stack that simply allows datagrams to be exchanged without acknowledgments or delivery guarantees, requiring other protocols to handle error processing and retransmission. UDP is defined in RFC 768.
- unicast
Used for direct host-to-host communication. Communication is directed to only one destination and is originated only from one source.
- unidirectional shared tree
A method of shared tree multicast forwarding. This method allows only multicast data to be forwarded from the RP.
- unnumbered ...
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