Aps Management Information - Cisco MGX 8850 PXM45 Release Notes

Limitations and Restrictions for 2.1.x
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APS Management Information

The following tips apply to the use of the dspapsbkplane command and the APS connector, which is
sometimes called a backplane. The APS connector must be installed to enable intercard APS.
The APS dspapsln, dspapslns, switchapsln, and dspapsbkplane commands were modified in release
2.1.70.
The dspadjlnalm and dspadjlnalmcnt commands are new to Release 3.0.00. The dspadjlnalmcnt
Note
command is supported on AXSM-E and AXSM/B.
The APS dspadjlnalm command was new to release 2.1.70. Refer to the Release Notes for MGX 8850
Command Reference for Release 2.1 at the following location for further details about the commands
mentioned in these release notes:
Note The issues in this section are seen only in Operational mode 1+1, bidirectional, Rev/non-Rev. If at least
one side is configured as 1+1 unidirectional, these problems do not occur.
The following are some open issues in this release:
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Release Notes for Cisco MGX 8850 (PXM45), MGX 8850 (PXM1E), and MGX 8830, Software Release 3.0.10
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when the PNNI updates are refreshed. (This will happen at the default time of 30 minutes.) The user
can recover from this problem by making the Administrative weight of that link very high to avoid
that link from being used.
When the switch cannot automatically resolve nativity check conflicts, you can force a configuration
rebuild from a specific hard disk by establishing a console port session through the corresponding
PXM-UI-S3 card and issuing the shmRecoverIgRbldDisk command. This command ignores the
nativity check and configures the entire switch according to the configuration on the hard disk.
PNNI default minimum VCI is 35 unless changed explicitly. The reason for the default is to reserve
VCI=32–34 for other control purposes (for example, MPLS and NCDP). For users who would like
to add MPLS controller in future releases of MGX 8850, it is highly recommend to set the min-vci
value to be 35 or more for all partitions on the port where the MPLS partition will be added. By
doing so, the TDP sig vc for MPLS will be established automatically on 0/32. Minimum VPI is not
negotiated by ILMI, so the user should set this parameter the same on both nodes.
http://www.cisco.com/univercd/cc/td/doc/product/wanbu/8850r21/index.htm
Reset of active AXSM/A or AXSM/B, removal of active AXSM/A or AXSM/B, or AXSM/A or
AXSM/B card switchover may cause the lines behind that card to be in an LOS status for 20ms to
30ms. If these lines were active at the time, some additional APS switch will occur; and the
corresponding lines at the far-end will be in SF alarms before the standby AXSM card comes up.
The momentary loss of signal is due to the hardware limitation; no other workaround is available.
(Refer to caveat CSCdu41763—P-comment and CSCdv01058—Eng-Note for more details.)
For AXSM/A hardware only: If multiple active lines are removed at the same time, one line may not
switch over.
– To recover, either perform a lockout of Protection line and Clear from the far end or perform
delete APS for the line, then add the APS line back.
OL-2914-01 Rev D0, July 3, 2003