Support For Rpm Redundancy By Dell Networking Os Version; Synchronization Between Management And Standby Units; Configuring Rpm Redundancy - Dell S4820T Configuration Manual

Failover Count:
Last failover timestamp:
Last failover Reason:
Last failover type:
-- Last Data Block Sync Record: --
------------------------------------------------
Stack Unit Config:
Start-up Config:
Runtime Event Log:
Running Config:
ACL Mgr:
LACP:
STP:
SPAN:
Dell#

Support for RPM Redundancy by Dell Networking OS Version

Dell Networking OS supports increasing levels of RPM redundancy (warm and hot) as described in the
table below.
Table 31. Support for RPM Redundancy by Dell Networking OS Version
Platform
S4820T

Synchronization between Management and Standby Units

Data between the Management and Standby units is synchronized immediately after bootup.
After the Management and Standby units have done an initial full synchronization (block sync), Dell
Networking OS only updates changed data (incremental sync). The data that is synchronized consists of
configuration data, operational data, state and status, and statistics depending on the Dell Networking OS
version.

Configuring RPM Redundancy

To select a primary RPM, use the following command. The RPM in slot 0 is the primary RPM by default.
• Manually select the primary RPM.
CONFIGURATION mode
redundancy primary
400
0
None
None
None
no block sync done
no block sync done
no block sync done
no block sync done
no block sync done
no block sync done
no block sync done
no block sync done
Failover Type
Hot Failover
Failover Behavior
Only the failed RPM reboots. All
the line cards and SFMs remain
online. All application tasks are
spawned on the secondary RPM
before failover. The running
configuration is synchronized at
runtime so it does not need to be
reapplied during failover.
High Availability (HA)