
5-12
Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Configuration Guide
Release 5.0.10, OL-3845-01 Rev. B0, August 16, 2004
Chapter 5 Preparing SRM Cards for Communications
Establishing Redundancy Between SONET/SDH Lines with APS
The following example configures 1+1 APS line redundancy for the lower bay of a
Cisco MGX 8850 (PXM1E/PXM45) switch:
mgx8850b.1.PXM.a >
addapsln 31.1.1 32.1.1 1
Step 6
Enter the cnfapsln command to configure the APS line, as follows:
mgx8850b.1.PXM.a >
cnfapsln
-w <
workingline
> -sf <
SignalFaultBER
> -sd <
SignalDegradeBER
>
-wtr <
Wait To Restore
> -dr <
direction
> -rv <
revertive
> -proto <
protocol
>
describes the command parameters.
Table 5-4
APS Line Architecture Modes
Option
Description
1
Selects 1+1 Bellcore GR-253 APS protocol signaling (transmission on both
working and protection lines).
2
Selects 1:1 Bellcore GR-253 APS protocol signaling (transmission on either the
working line or the protection line) for intracard APS.
Note
This option is not supported in this release.
3
Selects 1+1 ITU-T G.783 AnnexB APS protocol signaling (transmission on
both working and protection lines).
4
Selects 1+1 Y-cable signaling without K1 and K2.
Note
This option is not supported in this release.
5
Selects 1+1 straight cable signaling without K1 and K2.
Note
This option is not supported in this release.
Table 5-5
cnfapsln Command Parameters
Option
Description
-w
Replace workingline with the location of the working line using the format
slot.bay.line. The possible choices are:
•
Cisco MGX 8830 = 7.1.1
•
Cisco MGX 8850 (PXM1E/PXM45), upper bay = 15.1.1
•
Cisco MGX 8850 (PXM1E/PXM45), lower bay = 31.1.1
-sf
Replace <SignalFaultBER> with one of the following numbers to indicate the
Signal Fault Bit Error Rate (BER), in negative powers of ten:
•
3 = 10
-3
•
4 = 10
-4
•
5 = 10
-5
Example:
-sf 3