Adaptec ANA-5940 - Manual (Page 148)

ANA-5910/5930/5940 User’s Guide
Stock Number: 510694-00, Rev. C
Page: Glossary-12
Print Spec Number: 493081-00
Current Date: 5/28/97
ECN Date: 05/29/97
same as ordinary telephone
wire) does not.
V
VBR
Variable Bit Rate. A type of ATM
traffic flow. As opposed to
Constant or Continuous Bit
Rate, VBR traffic may be bursty.
VC
Virtual Channel. A PVC or SVC.
VC Multiplexing
An older protocol that allows
you to connect ATM nodes using
PVCs (also known as null
encapsulation).
VCC
Virtual Channel Connection. A
joining of virtual channel links
between two endpoints where
higher layer protocols are
accessed. By definition, ATM cell
sequence must be preserved
over a VCC.
VCI/VPI
Virtual Channel Identifier/
Virtual Path Identifier. ATM
addressing information. An
identifying value found in the
header of each ATM cell.
VLAN
Virtual LAN. A logical collection
of member endpoints and
network devices grouped
together in secure, autonomous
domain. Membership in a
VLAN is not restricted by
physical location. VLANs in
ATM networks may be built
upon emulated LANs.
VPC
Virtual Path Connection. A
joining of virtual path links
between two points in which the
VCI values are either reassigned
or terminated. Several VCCs
may be bundled into one VPC.
W
WAN
Wide Area Network. A
physically dispersed collection
of LANs.
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