196
C
HAPTER
5: C
ONFIGURING
P
ATH
B
UILDER
S700 M
ODULES
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ORTS
,
AND
A
PPLICATIONS
Figure 154
FRF.8 Transparent Encapsulation Mode
Translation
—Used in cases when you have ATM devices that do not support
1490 as a protocol across their ATM trunks; for example, when you have an
PathBuilder S700 terminating the ATM network at one end and an ATM-ready
device, such as a router with an OC-3 UNI, at the other end. Typically these
ATM-ready devices do not support 1490 as a protocol across their ATM trunks, so
you have to do LLC_SNAP (1483) per FRF.8. Mode 1F does 1490 to 1483
translation. See Figure 155.
Figure 155
Translation Encapsulation Mode
DE to CLP Mapping
—Frame Relay Discard Eligibility field to Cell Loss Priority field
mapping. This parameter defines the value to which CLP will be set in outgoing
ATM cells. The available settings depend on what interworking mode you have
selected: Network or Service.
The following settings are available for Network interworking mode:
Direct
—Mode 1 mapping; matches DE value to CLP value. When the serial
port is in this mode, it does not translate Frame Relay (NLPID) encapsulation,
rather it sends it straight through the ATM network, possibly to a Frame Relay
network or device.
None
—No DE to CLP Mapping
RFC 1490 Encapsulated
VCC
DLCI
DLCI
ATM
FRR
FRR
PathBuilder S700
PathBuilder S700
ATM
FRR
Translation
RFC 1483
RFC 1490
VCC
DLCI
ATM Router with FRR IWF
PathBuilder S700
PathBuilder S700
Summary of Contents for 3C63400-3AC-C - PathBuilder S700 Switch
Page 14: ...xiv CHAPTER SUPPLEMENTARY REGULATORY INFORMATION ...
Page 18: ...4 ABOUT THIS GUIDE ...
Page 28: ...14 CHAPTER 1 SYSTEM DESCRIPTION ...
Page 88: ...74 CHAPTER 3 GETTING STARTED ...
Page 260: ...246 CHAPTER 6 PATHBUILDER S700 DIAGNOSTICS AND PERFORMANCE MONITORING ...
Page 270: ...256 INDEX ...