Cisco BPX 8650, Installation And Configuration Manual

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Cisco BPX 8600 Series Installation and Configuration
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
Chapter 21 Configuring ATM Connections
Traffic Policing Examples
Figure 21-17 ATFXFST Connection Prompt Sequence
Traffic Policing Examples
Traffic Policing, also known as Usage Parameter Control (UPC), is implemented using either an ATM
Forum single or dual-leaky bucket algorithm. The buckets represent a GCRA (Generic Cell Rate
Algorithm) defined by two parameters:
•
Rate (where I, expected arrival interval is defined as 1/Rate)
• Deviation (L)
If the cells are clumped too closely together, they are noncompliant and are tagged or discarded as
applicable. If other cells arrive on time or after their expected arrival time, they are compliant, but three
is no accrued credit.
ATFXFST
For policing prompt:
1 = VBR.1
2 = VBR.2
3 = VBR.3
4 = PCR policing only
5 = policing off
VC QDepth maps to VC Queue max for frame relay.
EFCI maps to ECN for frame relay.
IBS maps to C max for frame relay.
Note: FBTC (Frame based traffic control - AAL5,
same as FGCRA) is automatically set to yes.
Disabled
(Configure
following
parameters) Enabled
28816
1
1
2
2
PCR(0+1)
%Util
MCR
CDVT(0+1)
FCES (Flow Control External Segment, yes/no) (same as BCM)
Default Extended Parameters (enable/disable)
SCR
MBS
Policing (1, 2, 3, 4, or 5)
VC QDepth
CLP Hi
CLP Lo/EPD
EFCI
ICR
ADTF (same as ICR TO)
Trm (same as Min. Adjust)
RIF (same as Rate up)
RDF (same as Rate down)
IBS Default values used
for: SCR, MBS, etc.