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Cisco BPX 8600 Series Installation and Configuration
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
Chapter 25 Configuring SONET Automatic Protection System
APS 1:1 (Line Redundancy)
To set up APS, the
addapsln
command is used for the following scenarios:
•
Before the
addapsln
command is used, the switch software will not attempt to use or monitor the
protection line; only the working line is used.
•
If the
addapsln
command is used with a working line in place, the working line is always initially
selected.
General Criteria
APS 1:1 cannot be configured on cards already configured for YRED. They cannot be configured
concurrently. Use APS 1 + 1 instead.
APS 1:1 configuration requires that the user add the APS configuration to a line before upping the line.
APS 1:1 configuration requires that the user down a line prior to deleting the APS configuration on the
line.
APS 1:1 can only be configured for bidirectional operation and revertive switching.
Configuration Criteria
The redundant lines must be adjacent. In addition, the lines which may be paired are:
•
1 and 2
•
3 and 4
•
5 and 6
•
7 and 8
Either of the two lines may be designated as working line and the other as the protection line.
The switching of the working and protection lines is controlled by BXM firmware/hardware under the
APS protocol.
The BPX firmware/hardware performs switching between the protection and working lines in the event
of a line or port failure.
The user may add APS as long as the working and protection line are in the standby state. Lines and
trunks can only be upped after APS 1:1 is added.
Configuring APS 1:1
To configure APS 1:1 redundancy, use the following procedure as an example:
Note
Before configuring for APS 1:1 redundancy, all card connections must be deleted using the
delcon
command
Step 1
Ensure that lines are connected, for example on ports 1 and 2 of a BXM in slot 3.
Note
The last entry, “2”, in the
addapsln
command specifies the type of APS, in this example APS
1:1.
Summary of Contents for BPX 8650
Page 49: ...P A R T 1 The BPX Switch ...
Page 50: ......
Page 159: ...P A R T 2 Installation ...
Page 160: ......
Page 273: ...P A R T 3 Initial Configuration and Network Management ...
Page 274: ......
Page 311: ...P A R T 4 Configuring Connections ...
Page 312: ......
Page 487: ...P A R T 5 Troubleshooting and Maintenance ...
Page 488: ......
Page 533: ...P A R T 6 BPX Specifications ...
Page 534: ......
Page 555: ...P A R T 7 Appendices ...
Page 556: ......