Дорожная карта для Cisco Cisco Packet Data Gateway (PDG)
Redundancy and Availability Features
Service Availability Features ▀
Cisco ASR 5000 Series Product Overview ▄
OL-22937-01
Figure 52. Recommended Redundant Configuration for Data Services - Rear View
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PFU 2
PFU 1
Chassis Airflow Exhaust
from Upper Fan Tray
Maintenance and Failure Scenarios
The following table shows various maintenance and failure scenarios involving the SPC/SMC and SPIO cards; and
explains how each situation is resolved.
explains how each situation is resolved.
Table 33. Service Assurance Features for the
SPC/
SMC and SPIO
Hardware
Failure
Scenario
Failure
Scenario
Action Taken
Effect on
Accounting
Data
Accounting
Data
Effect on User
Sessions
Sessions
Effect on the
Flow of User
Data Packets
Flow of User
Data Packets
Effect on User
Control
Transactions
Control
Transactions
Effect on
Management
Traffic
Management
Traffic
SPC/SMC -
Planned
maintenance
Planned
maintenance
Tasks are switched
over to standby
SPC/SMC. SPIO
remains active.
over to standby
SPC/SMC. SPIO
remains active.
No impact
No impact
No impact
No impact
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