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Cisco MGX 8850 Routing Switch Command Reference
Release 2.0, Part Number 78-10467-04 Rev C0, October 2001
Chapter 9 Troubleshooting Commands
cnfdiag
Standby State
When you enable online diagnostics on a standby AXSM card, the following tests run:
• Crossbar loopback walk test on QE, Humvee, and Crossbar paths
• Back card loopback test on T3/E3 lines
Offline Diagnostics
Offline diagnostics are destructive tests (that interfere with active traffic) and therefore run only on
standby cards.
Offline diagnostics must be scheduled using the offline start (offStart) and offline day-of-week (offDow)
parameters. The coverage (offCover) parameter specifies the length of time that the offline diagnostics
will run.
Note When an active card fails, the shelf manager must stop the diagnostics on the standby card
immediately, reset, and allow normal arbitration to occur.
When offline diagnostics is enable and scheduled, numerous tests may be run depending on the
implementation. The possible tests that may be run on the PXM45 and AXSM cards are listed in the
following sections.
PXM45 Offline Diagnostics
1. Processor Subsystem Test
• Flash EPROM
• SDRAM
• SCC
• PCI Bridge
2. Component Level Test
• PIO
• FPGA
• LEDs
• Fan / Power Supply
• BRAM / RTC
• SEEPROM / NovRAM Checksum Test
3. ASIC Tests
• QE1210 Register and DMA RAM Test
• CBC Register Test
• Humvee Register Test
• Switch ASIC Register Test
• Atlas Register and RAM Test
• Framer Register and RAM Test
4. UI S3/S4 Back card test
