Dell Force10 E1200i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 374
Component Redundancy, RPM Redundancy
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www.dell.com | support.dell.com Component Redundancy Dell Force10 systems eliminates single points of failure by providing dedicated or load-balanced redundancy for each component. RPM Redundancy The current version of FTOS supports 1+1 hitless Route Processor Module (RPM) redundancy. The primary RPM performs all routing, switching, and control operations while the standby RPM monitors the primary RPM. In the event that the primary RPM fails, the standby RPM can assume control of the system without requiring a chassis reboot. This section contains the following sub-sections: • Boot the chassis with a single RPM • Boot the chassis with dual RPMs • Automatic and manual RPM failover • Support for RPM redundancy by FTOS version • RPM synchronization Boot the chassis with a single RPM You can boot the chassis with one RPM and later add a second RPM, which automatically becomes the standby RPM. FTOS displays Message 1 when the standby RPM is online. Message 1 Standby RPM is Online %RPM-2-MSG:CP0 %POLLMGR-2-ALT_RPM_STATE: Alternate RPM is present %IRC-6-IRC_COMMUP: Link to peer RPM is up %RAM-6-RAM_TASK: RPM1 is in Standby State. On the C-Series, since the RPM also contains the switch fabric, even though the second RPM comes online as the standby, the switch fabric is active and participates in routing. You can achieve line rate on all line cards with a single RPM except for the 8-port 10G line card which requires both RPMs to achieve line rate. Boot the chassis with dual RPMs When you boot the system with two RPMs installed, the RPM in slot R0 is the primary RPM by default. Both RPMs should be running the same version of FTOS. You can configure either RPM to be the primary upon the next chassis reboot using the command redundancy primary from CONFIGURATION mode. 374 | High Availability
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