Cnfxbarmgmt - Cisco MGX 8850 Command Reference Manual

cnfxbarmgmt

cnfxbarmgmt
Configure Crossbar Management—configure load sharing
The application for is a redundant PXM45 setup. It allows the MGX 8850 to maintain its peak throughput
of 45 Gbps without requiring a switchover to the standby cards if a switch ASIC becomes defective. In
this scheme, one of the switch ASICs on the standby PXM45 takes over the switching for the defective
ASIC on the active PXM45.
On an MGX 8850 node, this command applies to Release 2.1 or higher.
Note
Regardless of whether the node has redundant PXM45s or a load-sharing configuration, you can still
investigate alarms and errors through a hierarchy of shelf-management and crossbar-related commands:
1.
2.
3.
4.
Cards on Which This Command Runs
PXM45
Syntax
cnfxbarmgmt
<loadSharing>
<autoShutdown>
<planeAlarmThresh>
Syntax Description
loadSharing
autoShutdown
planeAlarmThresh
Cisco MGX 8850 Routing Switch Command Reference
9-40
dspndalms
dspswalms
dspxbaralm
dspxbarerrcnt
0 = disable load sharing.
1 = enable load sharing.
However, if a bad switch ASIC already exists, the switch blocks the
command.
–1 = force load sharing to be disabled
when one or more bad switch ASICs exist on the active PXM45.
A 0 disables automatic shut-down. A 1 enables automatic shut-down. The
default is disabled.
An alarm threshold for declaring that a switch plane is bad. Each unit of the
threshold represents a link between the switch ASIC and the card. (The
determination of a bad link depends on the crossbar error threshold.)
If the number of bad links reaches the threshold, the active PXM45 shuts
down the ASIC and shifts the switching load to the standby PXM45. The
range for planeAlarmThresh is 1–32.
Chapter 9 Troubleshooting Commands
Release 2.0, Part Number 78-10467-04 Rev C0, October 2001