User Manual

Glossary
233
Glossary
virtual path identifier See VPI.
Virtual Router
Redundancy Protocol
See VRRP.
VPI virtual path identifier. 8-bit field in the header of an ATM cell that indicates the virtual path
the cell takes. See also VCI.
VRRP Virtual Router Redundancy Protocol. On Fast Ethernet and Gigabit Ethernet interfaces, allows
you to configure virtual default routers.
W
wavelength-division
multiplexing
See WDM.
WDM Wavelength-division multiplexing. Technique for transmitting a mix of voice, data, and video
over various wavelengths (colors) of light.
weighted round-robin See WRR.
WRR Weighted round-robin. Scheme used to decide the queue from which the next packet should
be transmitted.