Specifications

21-36
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
Chapter 21 Configuring ATM Connections
ATM Connection Configuration
Figure 21-11 UBR Connection Prompt Sequence
Network and Service Interworking Notes
Frame Relay to ATM Interworking enables Frame Relay traffic to be connected across high-speed ATM
trunks using ATM standard Network and Service Interworking (see Figure 21-12 and Figure 21-13).
Two types of Frame Relay to ATM interworking are supported:
• Network Interworking
PerformedbytheBTMcardontheIGXswitchandtheFRSMcardontheMGX8220
• Service Interworking
Performed by the FRSM card on the MGX 8220
Table 21-11 UBR Policing Definitions
Connection
Type
ATM Forum TM spec.
4.0 conformance
definition
PCR Flow
(1st leaky
bucket)
CLP tagging
(for PCR
flow)
SCR Flow
(2nd leaky
bucket)
CLP tagging
(for SCR
flow)
UBR UBR.1
when CLP setting = no
CLP(0+1) no off n/a
UBR UBR.2
when CLP setting = yes
CLP(0+1) no CLP(0) yes
UBR
PCR(0+1)
%Util (default to 1%)
CDVT(0+1)
FBTC (AAL5 Frame based traffic control, enable/disable)
CLP Setting (yes, no) (same as CLP tagging)
10228
Trunk cell routing
restrict (Y/N) [Y]