Agilent Technologies 622Vu Advisor, User Manual

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A user’s ATM equipment and public ATM network equipment. The interface in this
case, known as a public UNI, is used to connect private ATM equipment with provider
networks, and protects the provider network from user or CPE equipment that may
misbehave (or otherwise not adhere to the ATM standards).
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Private ATM switches (or other CPE equipment) and public ATM network equipment.
The interface in this case is the public UNI described above.
user profile
Tool used to establish a particular processing environment quickly, by loading
the user profile associated with that environment. Each profile comprises a combination
of:
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Settings that become effective when the profile is loaded: a cell library, use of toolbars
and toolbar Help, colors used when viewing captures, and so forth.
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Up to 16 scripts that are run regularly by the profile user(s), and that you can initiate by
clicking their icon (run button) on the profile toolbar.
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Preferences and other information that’s stored session to session, so you can restart with
the same settings (e.g., last user profile used, and options used to view captured traffic).
You define user profiles in two places: during capture processing (for preferences related to
viewing the capture), and using the Load User Profile button from the main menu (for all
other settings).
VC
Virtual Channel (Virtual Circuit).
VCC
See Virtual Channel Connection.
VCI
See Virtual Channel Identifier.
Virtual Channel Connection (VCC)
A Virtual Channel Connection is defined as a
concatenated list of Virtual Channel (VC) links. A VC link is a unidirectional flow of ATM
cells with the same VCI between a VC connecting point and another VC connecting point or a
VC endpoint.
Virtual Channel Identifier (VCI)
16-bit identifier that’s carried in the cell header. Together
with the 12-bit VPI (Virtual Path Identifier), the VCI forms a 28-bit channel identifier that
identifies the ATM connection. While the channel identifier changes from one hop to the next
as a cell moves through the ATM internet, it stays the same between any two network
elements for the life of the connection. See channel identifier for more information.
Virtual Path Identifier (VPI)
12- or 8-bit identifier that’s carried in the cell header (12 bits for
NNI transmissions and 8 for UNI, which sacrifices 4 bits for the GFC). Together with the 16-
bit VCI (Virtual Channel Identifier), the VPI forms a 28- or 24-bit channel identifier that
identifies the ATM connection. While the path identifier changes from one hop to the next as
a cell moves through the ATM internet, it stays the same between any two network elements
for the life of the connection. See channel identifier for more information.
VP
Virtual Path.
VPC
Virtual Path Connection.
VPCI/VCI
Virtual Path Connection Identifier/Virtual Channel Identifier.
VPI
See Virtual Path Identifier.
VP/VC
Virtual Path/Virtual Circuit.
Wrap Buffers
When defining filtersets, you can choose to wrap buffers or not. The option you
choose applies for all buffers defined for the filterset, and indicates whether to:
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Reuse each buffer continually until the capture is stopped, essentially creating a circular
buffer (box is marked). With this selection, 622Vu Advisor writes over cells that have
already been stored on the analysis device after the buffer is full.
•
Fill up each buffer once, then stop collecting the corresponding cells (box not marked).
Cells that would otherwise be stored in the buffer are discarded; they don’t fall through
to any other buffers that match their content.
A: Glossary
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