5-11
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
Step 1
Establish a configuration session with the active PXM using a user name with GROUP1_GP privileges
or higher.
Note
All SRM configuration is done from the active PXM card.
Step 2
Verify that the switch has redundant SRM back cards installed in all bays that will support bulk
distribution and line redundancy (redundant SRM back cards can support a standalone PXM/SRM
installation). For more information, refer to the Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8950,
Cisco MGX 8830, and Cisco MGX 8880 Hardware Installation Guide, Releases 2 Through 5.
Step 3
If you have not done so already, bring up the working line as described in the “
”
section earlier in this chapter. The working line is the line on the primary SRME card, which will be in
slot 7, 15, or 31.
Step 4
If you are configuring an SRM on a Cisco MGX 8850 (PXM1E/PXM45), enter the dspapsbkplane
command to verify that an APS connector is in the bay where APS is to be configured. For example.
PXM_SJ.7.PXM.a >
dspapsbkplane
This feature does not apply to the card present in this slot
SRME Top Bay:APS Back Plane Not Engaged or Adjacent Back Card Not Present.
SRME Bottom Bay:APS Back Plane Is Engaged
Note
APS functionality is built into the Cisco MGX 8830. Therefore, you do not need to install a
separate APS connector in the switch in order for APS to function.
Step 5
Enter the addapsln command as follows:
mgx8850b.1.PXM.a >
addapsln
<
workingIndex
> <
protectIndex
> <
archmode
>
Replace workingIndex and protectIndex with the location of the working and protection lines, which
must be entered in the format: slot.bay.line. Because the SRM SONET/SDH configurations provides one
line, the working and protection indexes can only have one possible for value for a specific switch and
bay.
shows the proper values to enter for each switch and bay combination.
Replace archmode with an option number that defines the type of line redundancy you want to use.
shows the option numbers and the types of redundancy they select.
Table 5-3
Working and Protection Indexes for addapsln Command
Switch Type and Bay
Working Index
Protection
Index
Cisco MGX 8830
7.1.1
8.1.1
Cisco MGX 8850 (PXM1E/PXM45), upper bay
15.1.1
16.1.1
Cisco MGX 8850 (PXM1E/PXM45), lower bay
31.1.1
32.1.1