C-7
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
Appendix C ATM: An Overview
Figure C-6
SAR Adaptation Process
IGX Switch Trunk Interfaces to ATM
The IGX switch connects to an ATM trunk via the UXM card. The BTM (IGX switch) can operate in
several different addressing modes that you can select (see Table C-2 and Figure C-7):
•
BAM
In the BPX switch Addressing Mode (BAM), used for all Cisco WAN switching networks, the
system software determines VPI and VCI values for each connection that is added to the network.
You enter the beginning and end points of the connection and the software automatically programs
routing tables in each node that will carry the connection to translate the VPI/VCI address. You do
not need to enter anything more.
This mode uses the STI header format and can support all of the optional Cisco WAN switching
features.
•
SAM
In the Simple Addressing Mode (SAM), you must manually program the path whole address, both
VPI and VCI values.
•
CAM
The Cloud Addressing Mode (CAM) is used in mixed networks where you program the virtual path
addresses and the switch decodes the VCI address. Both CAM and SAM utilize the UNI header
type.
XXX Bytes
Application Layer Information
CS – PDU
SAR – PDU
ATM Cells
H8022
Variable Length
48 Bytes
48 Bytes
48 Bytes
Table C-2
ATM Cell Addressing Modes
Addressing Mode
Hdr. Type
Derivation of VPI/VCI
Where Used
BAM-BPX switch
Addressing Mode
STI
VPI/VCI = Node Derived
Address
Between IGX switch and BPX switches, or
between IGX switch nodes.
Содержание BPX 8600 Series
Страница 43: ...P A R T 1 The BPX Switch ...
Страница 44: ......
Страница 151: ...P A R T 2 Installation ...
Страница 152: ......
Страница 261: ...P A R T 3 Initial Configuration and Network Management ...
Страница 262: ......
Страница 291: ...P A R T 4 Configuring Connections ...
Страница 292: ......
Страница 481: ...P A R T 5 Troubleshooting and Maintenance ...
Страница 482: ......
Страница 531: ...P A R T 6 BPX Specifications ...
Страница 532: ......
Страница 563: ...P A R T 7 Appendices ...
Страница 564: ......
Страница 624: ...Glossary 24 Cisco BPX 8600 Series Installation and Configuration Release 9 3 0 Part Number 78 10674 01 Rev D0 July 2001 ...
Страница 630: ...Index 6 Cisco BPX 8600 Series Installation and Configuration Release 9 3 0 Part Number 78 10674 01 Rev D0 July 2001 ...