Cisco ASR1004-20G-SEC/K9 Software Guide - Page 204
on Cisco ASR, Support for Dual
View all Cisco ASR1004-20G-SEC/K9 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 204 highlights
Hardware Redundancy Overview on the Cisco ASR 1000 Series Routers Chapter 5 High Availability Overview • SPA interface processors (SIPs)-A SIP must be reloaded, and traffic briefly interrupted, for a SIP upgrade to complete. • Shared port adapters (SPAs)-A SPA must be reloaded, which will briefly interrupt traffic to that SPA, for a SPA software subpackage update to complete. Hardware redundancy on the Cisco ASR 1000 Series Routers gives users the following benefits: • A failover option-If a processor fails, the standby processor immediately becomes the active processor with little or no delay. The failover happens completely within the same router, so a second standby router is not needed. • No downtime upgrades-Using features like ISSU, a software upgrade can be handled on the standby processor while the active processor continues normal operation. Hardware redundancy is available on the Cisco ASR 1006 Router only at this time. provides a hardware redundancy overview. Table 5-1 Hardware Redundancy Overview Hardware Enhanced Services Processor Route Processor Support for Dual Hardware Configuration on Cisco ASR 1001 Router Support for Dual Hardware Configuration on Cisco ASR 1002 Router Support for Dual Hardware Configuration on Cisco ASR 1004 Router Support for Dual Hardware Configuration on Cisco ASR 1006 Router Failover Behavior No No No Yes If an active ESP experiences a hardware or software event that makes it unable to forward traffic (such as a hardware failure, an OIR, or a manual switch) and a standby ESP is configured, the standby ESP becomes the active ESP with the possibility of a minor interruption (less than 200 ms). No No No Yes If an active RP experiences an event that makes it unable to forward traffic (such as a hardware failure, a software failure, an OIR, or a manual switch) and a standby RP is configured, the standby RP immediately becomes the active RP. Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide 5-2 OL-16506-10