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Chapter 21
Configuring ATM Connections
Figure 21-17 ATFXFST Connection Prompt Sequence
ATFXFST
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
For policing prompt:
1
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.
2
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.
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:
•
•
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.
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
Disabled
(Configure
following
parameters)
1
2
Rate (where I, expected arrival interval is defined as 1/Rate)
Deviation (L)
Enabled
Default values used
for: SCR, MBS, etc.
Cisco BPX 8600 Series Installation and Configuration
Traffic Policing Examples
21-41
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Troubleshooting
