Chassis

High Availability (HA) Platform Redundancy Support for ACX7509 Devices— High availability platform redundancy support for ACX7509 device includes the following:
- Support for Graceful RE Switchover (GRES) for simultaneous switchover of RCB and FEB. Support for nonstop active routing (NSR) seamless switchover with Layer-2 or Layer-3 protocol data packets.
- Support for two RCBs and two FEBs for redundancy. The RCB and FEB mastership is tied. The RCB0-FEB0 and RCB1-FEB1 switchover together. RCB and FEB are a host-subsystem and switchover due to one will cause a complete host sub-system switch.
- ACX7509 has one CPU per RE, and transmit traffic ( including transit traffic, host-traffic, inline keepalive sessions) is affected when the master RE or FEB is affected. The recovery action is a fast RE switchover with support for replication and restoration of statistics.
[See Platform Redundancy FEB Redundancy Support for High Availability of ACX7509 Devices,routing-engine (Chassis),request chassis feb,request chassis routing-engine master,show chassis feb,show chassis routing-engine, and show system switchover.]