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ATM Connections 7-31
Traffic Policing Examples
Figure 7-17 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.
Figure 7-17 VBR.2 Connection, Policing = 2, with Buckets 1 and 2 Compliant
CLP(0) cells
compliant
with Leaky Bkt 2,
admit to network
+
SCR
BT + CDVT
Leaky Bkt 2
CLP=1
5
CLP=0
4
CLP=1
3
CLP=0
2
CLP=0
1
+
PCR(0+1)
CDVT(0+1)
Time
interval
variations
Leaky Bkt 1
CLP=1
5
CLP=1
3
CLP=0
4
CLP=0
2
CLP=0
1
CLP=0
4
CLP=0
2
CLP=0
1
CLP(1) cells compliant with Leaky Bkt 1, admit to network
CLP(0) cells
compliant with
Leaky Bkt 1,
applied to
Leaky Bkt 2
Connection setup
and compliance status:
VBR.2
Policing = 2
Bkt 1 depth < CDVT(0+1)
Bkt 2 depth < BT + CDVT
S6347
Discard
non-compliant
CLP(0) cells