21-34
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 21-9 Meaning of VSVD and Flow Control External Segments
Available Bit Rate Foresight Connections
The Available Bit Rate Foresight (ABRFST) connection uses the propriety ForeSight congestion
control and is useful when configuring connections on which both ends do not terminate on BXM cards.
The parameters for an ABRFST connection are shown in Figure 21-10 in the sequence in which they
occur during the execution of the addcon command.
VS and VD shown below are for traffic flowing
in direction of arrow. For the other direction of traffic,
VS and VD are in the opposite direction.
External segment Network segment External segment
1
2
3
4
5
5
ABR with ForeSight
VS ABR standard VD
VS ABR standard VD
ABR with ForeSight
VS ABR VD
VS ABR VD
VS ABR VD
VS ABR VD
ABR standard without VSVD
(without congestion flow control performed by network segment)
ABR Standard
VSVD
No
2
No
Yes
1
ABR with ForeSight
No
Yes
Yes
Flow control
external
segment
4
Flow control
external
segment
3
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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 ...