19-44
ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter19 Configuring Circuit Emulation Services
Configuring T1/E1 CES SVCs
Channels used by this circuit: 24
Cell-Rate: 172, Bit-Rate 64000
cas OFF, cell_header 0x8200 (vci = 2080)
Configured CDV 2000 usecs, Measured CDV unavailable
De-jitter: UnderFlow unavailable, OverFlow unavailable
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcActive, maxQueueDepth 81, startDequeueDepth 64
Partial Fill: 47, Structured Data Transfer 1
Passive SoftVC
Src: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8038.20 vpi 0, vci 2080
Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.00
Configuring T1/E1 CES SVCs
A CES module converts CBR traffic into ATM cells for propagation through an ATM network. CBR
traffic arriving on a CES module port must first be segmented into ATM cells. This cell stream is then
directed to an outgoing ATM or CBR port.

Configuring T1/E1 Unstructured CES SVCs

Figure 19-8 displays a switched VC configured for unstructured CES. The switched VC uses adaptive
clocking and the source clock is network-derived.
Note Typically you configure a switched VC between CES modules anywhere in your network. For simplicity,
this example and the accompanying procedure describe how to create a switchedVC between modules
in the same ATM switch router chassis.
Figure19-8 Switched VC Configured for Unstructured CES
Configuring a switchedVC for u nstructured CES is a two-phase process:
Phase 1—Configuring the Destination (Passive) Side of the Unstructured Switched VC, page 19-45
Phase 2—Configuring the Source (Active) Side of the Unstructured Switched VC, page 19-46
CES port adapter
Target switch
79601
CBR-SVC-A
(CBR0/0/0)
(VPI 0, VCI 16)
Source (active) side of PVC
CBR-SVC-B
(CBR0/0/1)
(VPI 0, VCI 1040)
Destination (passive) side of PVC
Circuit 0
0 1 23
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