Cisco ESR10008 Hardware Installation Guide - Page 164
Unchannelized DS3, Unicast, Virtual Private, Network, Weighted Fair, Queuing, Weighted Random
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Glossary U Unchannelized DS3 See Clear channel DS3. Unicast A message sent to a single network destination. Compare with Broadcast and Multicast. V Virtual Private Network VLAN VoIP VPN VT-n See VPN. Virtual LAN. A group of devices on one or more LANs that are configured (using management software) so that they can communicate as if they were attached to the same wire, when in fact they are located on a number of different LAN segments. Because VLANs are based on logical instead of physical connections, they are extremely flexible. Voice over IP. Voice over IP enables a router to carry voice traffic (for example, telephone calls and faxes) over an IP network. Virtual private network. A secure, end-to-end private network constructed over a third-party or public network such as the Internet. Virtual tributary level n. The SONET format for mapping a lower-rate signal into a SONET payload. For example, VT-1.5 is used to transport a DS1 signal. See also DS1 and SONET. W WAN Wide-area network. A data communications network that serves users across a broad geographic area and often uses transmission devices provided by a common carrier (such as a telephone company or service provider). Weighted Fair Queuing See WFQ. Weighted Random See WRED. Early Detection WFQ Weighted Fair Queuing. Congestion management algorithm that identifies conversations (in the form of traffic streams), separates packets that belong to each conversation, and ensures that capacity is shared fairly between these individual conversations. WFQ is an automatic way of stabilizing network behavior during congestion and results in better performance and fewer retransmissions. GL-14 Cisco 10008 Router Hardware Installation Guide OL-0659-13