Troubleshooting guide

9-3
Cisco Broadband Local Integrated Services Solution Troubleshooting Guide
OL-5169-01
Chapter 9 Troubleshooting Cisco Media Gateways
MGX 8850 Diagnostics
• 512 Meg SRAM
• MGX-RJ45-FE - FE card for RPM
• RPM 1-TO-N redundancy
The second configuration—MGX8850/PXM45/RPM-XF/VISM-PR/SRM-E—includes the following:
• 19-inch rack mount. Redundant PXM1 (1.2.01)
• 24 I/O+4 SRM slot, PXM1, PXM-UI,
• MGX-VISM-8T1 (2.2.0)
• VISM-VOIP-G711
• MGX-SRM-3T3/C
• MGX-BNC-3T3-M - backcard
• 512 Meg SRAM
• MGX-RJ45-FE - FE card for RPM
• RPM 1-TO-N redundancy
MGX 8850 Diagnostics
The purpose of system diagnostics is to ensure the integrity of each and every control/data path and every
hardware component involved in providing a path within the MGX8850 shelf. If enabled, periodic
diagnostic tests are performed to detect faults in the system. Once detected, the MGX8850 shelf manager
is informed and takes appropriate action. The MGX8850 system diagnostics design strategy is to develop
a software module embedded in the PXM45 software running on the active PXM45 card.
Each service module (SM), as well as PXM45 itself, will provide local diagnostics functions specific for
its card. These local diagnostics should provide a complete set of tests of each hardware component and
data paths. The MGX8850 system diagnostics does not need to know what diagnostics functionalities
are provided by these local diagnostics; it acts as a diagnostics controller which schedules and
coordinates these local diagnostics and provides the result to the MGX8850 shelf manager.
The MGX8850 software (PXM45 and SM's) provides 4 types of diagnostics. Each diagnostic is
performed in different situations or card states.A diagnostics procedure may be duplicated or repeated
when necessary to ensure high quality service and to meet the RAS requirement. These diagnostics are
as followed:
• Boot diagnostics performs a set of destructive tests (disrupts user traffic) on the hardware
components that are required to bring up the card.
• Off-line diagnostics performs destructive tests on the standby card only. The off-line tests are
comparable to the tests in Manufacturing diagnostics.
• On-line diagnostics monitor various components without disrupting user traffic (non-destructive
tests). These diagnostics include the fully meshed connection test.
• Manufacturing diagnostics tests all hardware components.