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Cisco BPX 8600 Series Installation and Configuration
Release 9.3.10, Part Number 78-11603-01 Rev. D0, July 2001
Chapter 21 Configuring ATM Connections
Traffic Policing Examples
Figure 21-25 shows a Vbr connection policing example, with the policing set to 4, and leaky bucket 1
non-compliant which indicates that the connection has exceeded the PCR for a long enough interval to
exceed the CDVT (0+1) limit. Non-compliant cells with respect to leaky bucket 1 are discarded.
Figure 21-25 Vbr Connection, Policing = 4, Leaky Bucket 1 Non-Compliant
Figure 21-26 shows a Vbr.2 connection policing example, with policing = 2, and both buckets
compliant. Leaky bucket two is policing the CLP(0) cell stream for conformance with maximum burst
size MBS (as specified by BT), and for compliance with the SCR sustained cell rate.
Connection setup
and compliance status:
VBR
Policing = 4
Bkt 1 depth > CDVT(0+1)
5
CLP(0+1) cells
compliant with
Leaky Bkt 1,
admit to network
CLP=1
3
CLP=0
2
CLP=0
1
S6346
To network
CLP=1
CLP=0
4
CLP=1
3
CLP=0
2
CLP=0
1
CLP=1
5
CLP=0
4
+
PCR(0+1)
CDVT(0+1)
Time interval variations
Leaky Bkt 1
Two CLP(0) cells, 1 and 2, and one
CLP(1) cell, 3, are shown as non-compliant
with the CDVT(0+1) limit of Leaky Bkt 1
and are discarded in this example.
Discard