High Availability Reference; Table 10 State Preservation During Cp Failover - Brocade Communications Systems Converged Enhanced Ethernet 8000 Administrator's Manual

5
High availability
Every configuration is either fully committed or not, but never "half-complete." If you had started
executing the copy startup running command, it will be resumed after failover before any new CLI is
allowed to be executed.

High availability reference

This section contains reference tables for high availability.
TABLE 10
Operation, data, or state
CLIs that are being executed when
the HA failover occurs.
Running and Startup configurations The running and startup configuration is preserved.
L2 forwarding table
VLAN table and state
Static Multicast MAC DA
Dynamic Multicast MAC DA
(learned via IGMP snooping)
MAC learning process
MAC ageing timer
Station moves during failover
Interface state
Interface counters
Interface counters related to CoS,
Flow control, RED Alarms and other
configuration
xSTP Port STP state
IGMP snooping – Dynamically
learned groups
Static, Dynamic Standard, and
Brocade LAGs
ACL policies
LLDP, neighbor information,
profiles, or DCBX state machine
QoS policies
Port authentication state
SNMP sessions
34
DRAFT: BROCADE CONFIDENTIAL
State preservation during CP failover
Expected behavior
All telnet/ssh sessions are disconnected and need to be reestablished after
failover.
Any CLI operation under progress will either be fully committed if its
execution had started on active CP or not executed completely.
The vty timeout configuration is preserved across failover.
All other configuration files are preserved.
This item is preserved during failover.
This item is preserved during failover.
This item is preserved during failover.
This item is preserved during failover.
MAC learning entries that are in the ASIC queue but yet to be processed by
software is flushed.
The timer is restarted after the failover.
Station moves are not detected.
Preserved as long as the interfaces are either in a shut or no-shut state. Any
interface which is not fully initialized is reset.
This item is preserved during failover.
This item is preserved during failover, however since interface counters are
not preserved, the alarms are restarted upon HA failover.
This item is preserved as long as the ports are in a steady state, otherwise
the port state machine is reset.
This item is preserved during failover.
This item is preserved during failover.
This item is preserved during failover, however the ACL counters are not
preserved.
This item is preserved during failover.
This item is preserved during failover.
Preserved during failover, as long as the ports are in a steady state,
otherwise the port state machine are reset.
Reset during failover. SNMP manager must reconnect after the failover.
Converged Enhanced Ethernet Administrator's Guide
53-1002163-02