Cisco Cisco Packet Data Gateway (PDG)
Feature Changes
Previous Behavior: A DPC would be reset causing an unplanned migration after receiving a
DDF_CRC_ERROR.
DDF_CRC_ERROR.
New Behavior: The DPC will not be reset and switched over after receiving a single DDF_CRC_ERROR.
The DDF FPGA will automatically be reprogrammed to clear the error, thereby minimizing network impact
and traffic loss.
The DDF FPGA will automatically be reprogrammed to clear the error, thereby minimizing network impact
and traffic loss.
Reprogramming of DDF FPGA on DPC to Reduce Outage Time
CSCuu75183 - Fabric support for DPC DDF reload
Applicable Products: ASR 5500, DPC
Associated CDETS ID: CSCuu26497 - DPC1 got shutdown due to DDF_CRC_ERROR
Feature Changes
The Data Firmware (DDF) FPGA provides four DMA engines for data transfer between the CPU and the
NPU on an ASR 5500 DPC. The size of the FPGA makes it susceptible to CRC errors which can result in a
fatal error on the DPC that initiates a card switchover for recovery.
NPU on an ASR 5500 DPC. The size of the FPGA makes it susceptible to CRC errors which can result in a
fatal error on the DPC that initiates a card switchover for recovery.
This solution reprograms the DDF1 FPGA when an Error Detection Cyclic Redundancy Check (EDCRC)
error is detected. Reprogramming minimizes outage time and reduces the number of lost sessions. It also
eliminates the need for a DPC switchover.
error is detected. Reprogramming minimizes outage time and reduces the number of lost sessions. It also
eliminates the need for a DPC switchover.
To speed the recovery process, the decompressed FPGA image is now stored in memory after the initial
programing. The FPGA will be reprogrammed and have data traffic flowing within four seconds after a CRC
error is detected by the FPGA.
programing. The FPGA will be reprogrammed and have data traffic flowing within four seconds after a CRC
error is detected by the FPGA.
System and Platform Enhancements for Release 19.0
This section identifies all of the system and platform enhancements included in this release:
Feature Changes – new or modified features or behavior changes. For details, refer to the System
Administration Guide for this release.
Administration Guide for this release.
Command Changes – changes to any of the CLI command syntax. For details, refer to the Command Line
Interface Reference for this release.
Interface Reference for this release.
Performance Indicator Changes – new, modified, and deprecated bulk statistics, disconnect reasons, counters
and/or fields in new or modified schema and/or show command output. For details, refer to the Statistics and
Counters Reference for this release.
and/or fields in new or modified schema and/or show command output. For details, refer to the Statistics and
Counters Reference for this release.
Add bucket-intervals to Output of show session disconnect-reasons
CSCut02445 - Enhancement for show session disconnect reasons output
Applicable Products: P-GW, S-GW, SGSN
Associated CDETS ID: CSCus46885 - Provide support for non-blocking message pacing
Release Change Reference, StarOS Release 19
450
System Changes in Release 19
Reprogramming of DDF FPGA on DPC to Reduce Outage Time