Cisco Systems 78-11450-03 - page 15

Glossary
GL-15
Cisco uBR10012 Universal Broadband Router Hardware Installation Guide
78-11450-03 Rev.B0
Wide-area network See WA N .
WRED Weighted Random Early Detection. RED uses an algorithm to randomly discard packets.The result of
the drop is that the source detects the dropped traffic and slows its transmission. WRED combines the
capabilities of the RED algorithm with IP precedence. This combination provides for preferential
traffic handling for higher-priority packets. It can selectively discard lower-priority traffic when the
interface starts to get congested and provide differentiated performance characteristics for different
classes of service.