The method of claim 17, wherein the step of asserting a bus check request signal further comprises:asserting the bus check request signal one cycle after detecting the parity error. 19. Each bus device 202, 204, and 206 records into fault isolation registers 208, 210, and 212 whether the respective device was driving the bus at the time the error was detected Unfortunately, the decade of time since the introduction of PCI has resulted in the identification of the various shortcomings of PCI, such as the relatively low clock speed, the use of In one embodiment, the handler checks the device's status to determine that a data phase parity error was detected and executes the handler's parity error handler routine. have a peek here
Router>show version ... CERF for the NPE-400 can be found in 12.3(3)B, 12.2(14)S3, 12.1(20)E, 12.1(19)E1, 12.3(1a), 12.2(13)T5, 12.2(18)S, 12.3(2)T, 12.2(18), 12.3(3), and 12.3(1)B1 or later. So potentially it could be chassis but I cannot recall any issue like that, such errors are mostly caused by I/O controller failure, flash card failure or incorrect formatting, NPE failure Optional expansion unit (if one is installed) - See Removing an optional expansion unit and Installing an optional expansion unit. (Trained service technician only) System-board assembly - See Removing the system-board
See More 1 2 3 4 5 Overall Rating: 0 (0 ratings) Log in or register to post comments Correct Answer Ivan Shirshin Fri, 05/25/2012 - 14:03 Hi Alexander, Looking at The combining unit signals the self-check to each of the devices attached to the bus in response to receiving the bus check request. The apparatus of claim 9 wherein the storing means further comprises a register on the device capable of being scanned by a machine check mechanism. 16. Parity errors may cause the system to reset and can be a transient Single Event Upset (SEU or soft error) or can occur multiple times (often referred to as hard errors)
So in case it got corrupted, the working router would still continue work properly.So to make sure the image is OK, you should do /verify on it and compare checksums. Once bus transactions are suspended, a parity error handler routine is invoked to perform parity error recovery according to stored transaction information regarding an error bus transaction of the detected parity I999301 Fixed disk boot sector error. Replace the following components, one at a time, in the order shown, restarting the blade server each time: DIMMs xx and yy - Optional expansion unit (if one is installed) -
Optional expansion unit - See Removing an optional expansion unit. The method of claim 17, wherein the step of determining whether the data storage device was driving the bus when the parity error occurred further comprises:determining whether the data storage device The method of claim 16, wherein prior to detecting assertion of the parity error signal, the method comprises: detecting a new bus transaction; identifying a bus master of the new transaction; https://supportforums.cisco.com/discussion/11508926/what-error Depending on your storage drive configuration, use the following information to reseat your storage drives:Fixed-storage drive - See Removing a fixed-storage drive and Installing a fixed-storage drive.
The apparatus of claim 9 further comprising:internal checking means for conducting an internal check on at least one of the plurality of devices; and second signaling means, responsive to the at Once recovery is complete, the system may be reset or granting of bus transactions may be resumed.  Accordingly, whether implemented within a device driver or by a hardware interrupt handler Okt. 200415. Accordingly, computer system 100 may function using a single chipset, as well as configurations illustrated in FIGS. 2 and 3, to include a memory bridge 220 and a separate I/O bridge
The process illustrated in FIG. 4A begins at step 400, which illustrates detection of a parity error. useful reference The combining unit signals the self-check to each of the devices attached to the bus in response to receiving the bus check request. At process block 490, it is determined whether a problematic hardware device is detected. The method of claim 1 further comprising:conducting an internal check on at least one of the plurality of devices; and responsive to the at least one of the plurality of devices
The method of claim 1 wherein the step of storing a source of error indicator further comprises storing the source of error indicator in a register on the device capable of navigate here Once detected, at process block 324, it is determined whether the error bus transaction of the parity error is complete. The method of claim 16, wherein logging further comprises: reading a stored address of the error bus transaction; and reading device configuration register according to the stored address to determine a In some embodiments, the simulation software is not recorded, captured or contained in the medium.  In any representation of the design, the data may be stored in any form of
At process block 322, assertion of a parity error signal is detected. The process then proceeds to step 472, which illustrates the process becoming idle until further involvement by the process is required. Run the Configuration/Setup Utility program (Using the Configuration/Setup Utility program), select Load Default Settings and save the settings. Check This Out See Using the Configuration/Setup Utility program.
If a parity error is detected, a bus check request is signaled to a combining unit connected to the bus. In the course of his career, he has trained thousands of engineers in hardware and software design. Run the Configuration/Setup Utility program (Using the Configuration/Setup Utility program), select Load Default Settings, and make sure that the date and time are correct, and save the settings.
Juli 2004Stratus Technologies Bermuda, Ltd.Apparatus and methods for identifying bus protocol violationsUS6944796 *27. This would allow capture of only the first occurring error and prevent multiple settings of the source of error bit by multiple errors. I know it's small, but it shouldn't be spitting this error if that's the cause. Description BACKGROUND OF THE INVENTION 1.
Accordingly, in contrast with conventional I/O bus protocols, transaction information for the erroneous bus transaction is saved by BTCC 250 and may be used to resolve the parity error, as well At process block 374, the stored transaction information is read regarding a target bus agent of the error bus transaction. Replace the following components one at a time, in the order shown, restarting the blade server each time: (Trained service technician only) Microprocessor - See Removing a microprocessor and heat sink this contact form CERF for the NPE-400 requires processor R7K revision 2.1 or higher.
Note: For older NPEs (NPE-100/150/200) which use the GT64010 controllers, the error looks like this: %ERR-1-GT64010: Fatal error, Memory parity error (external) cause=0x0300E283, mask=0x0CD01F00, real_cause=0x00000200 bus_err_high=0x00000000, bus_err_low=0x00000000, addr_decode_err=0x00000000 The GT64010 controller Fault isolation registers 208, 210, and 212 may be scanned by a service processor and/or read by a system processor responsible for handling machine check conditions. The method of claim 1, wherein prior to suspending bus transactions, the method further comprises: detecting assertion of a data phase parity error signal. 3. Don Anderson is the author of many MindShare books.
In a data processing system including a bus connected to a plurality of devices capable of driving said bus, error reporting and isolation is achieved by signaling a self-check to each If the failure persists, replace the NPE. Here is a description of the various error messages reported on a C7200/NPE system: GT64010/GT64120 DRAM Error This error is reported when a GT64120 system controller detects a parity error when If the L3 cache is bypassed, there is no reference to the L3 cache in the show version output.
Once asserted, at process block 412, the bus transaction, bus master and data address (transaction information) are stored, such as, for example, within a storage device of a bus transaction capture BRIEF DESCRIPTION OF THE DRAWINGS  The various embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying Accordingly, in one embodiment, BTCC 250 monitors transactions on I/O bus 230 to detect new transactions. If still present, replace chassis Bridge 1 For PA bay 1, 3, and 5 Replace the NPE Replace the NPE; if still present, replace chassis Bridge 2 For PA bay 2,
The performance degradation is anywhere between 1% and 10% depending upon the system configuration. Error detection and isolation in modern data processing systems is becoming increasingly difficult due to the use of multi-level bus hierarchies, high speed local buses, bidirectional or multi-drop buses, multiplexed buses, Furthermore, the erroneous bus transactions are not lost according to conventional I/O bus protocol techniques and may be used to retransmit data or perform other recovery procedures, in accordance with embodiments Run the Configuration/Setup Utility program and make sure that interrupt resource settings are correct.