Alcatel-Lucent OS9-GNI-U24 Manual De Usuario
Alcatel-Lucent
Page 42
OmniSwitch 9000
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The switch provides a broad variety of Availability features. Availability features are hardware and software-based
safeguards that help prevent the loss of data flow in the unlikely event of a subsystem failure.
In addition, some Availability features allow you to maintain or replace hardware components without powering off your
switch or interrupting switch operations. Combined, these features provide added resiliency and help ensure that your
switch is consistently available for your day-to-day network operations.
Hardware-related Availability features include:
• Software & Hardware Redundancy
• Configuration Redundancy
• Link Redundancy
• Smart Continuous Switching
• NI Module forwarding during CMM failover
• Software (Image) Rollback
• Hot Swapping
• Hardware Monitoring
• Power Checking Sequence
safeguards that help prevent the loss of data flow in the unlikely event of a subsystem failure.
In addition, some Availability features allow you to maintain or replace hardware components without powering off your
switch or interrupting switch operations. Combined, these features provide added resiliency and help ensure that your
switch is consistently available for your day-to-day network operations.
Hardware-related Availability features include:
• Software & Hardware Redundancy
• Configuration Redundancy
• Link Redundancy
• Smart Continuous Switching
• NI Module forwarding during CMM failover
• Software (Image) Rollback
• Hot Swapping
• Hardware Monitoring
• Power Checking Sequence
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Hardware redundancy refers to backup hardware components. If primary hardware components fail or go offline for any
reason, the redundant hardware automatically assumes the primary hardware functions (this is also referred to as failover).
The following components offer redundancy:
• Chassis Management Modules (CMMs)
• Power Supplies
• Fan Units
• MAC EEPROM
Note. Redundancy is a key Availability feature; it is recommended that you install redundant hardware components in
your switch whenever possible. However, CMM redundancy is not supported on the OS9600 switch because it contains
only one CMM slot.
reason, the redundant hardware automatically assumes the primary hardware functions (this is also referred to as failover).
The following components offer redundancy:
• Chassis Management Modules (CMMs)
• Power Supplies
• Fan Units
• MAC EEPROM
Note. Redundancy is a key Availability feature; it is recommended that you install redundant hardware components in
your switch whenever possible. However, CMM redundancy is not supported on the OS9600 switch because it contains
only one CMM slot.
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Software rollback (also referred to as image rollback) essentially allows the switch to return to a prior “last known good”
version of software in the event of a system software problem. The CMM controls software rollback through its resilient
directory structure design (i.e., /flash/working and /flash/certified).
version of software in the event of a system software problem. The CMM controls software rollback through its resilient
directory structure design (i.e., /flash/working and /flash/certified).
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You are not required to enter a CLI command in order to hot swap NI modules. The hot swap function can be performed
on the fly by simply removing the module from the switch chassis.
Hot swapping refers to the action of adding, removing, or replacing certain hardware components without powering off
your switch and disrupting other components in the chassis. This feature greatly facilitates hardware upgrades and
maintenance and also allows you to easily replace components in the unlikely event of hardware failure.
The following hardware components can be hot swapped:
• Chassis Management Modules (CMMs)
• Gigabit Ethernet Network Interface modules (GNIs)
• 10-gigabit Ethernet Network Interface modules (XNIs)
• Power supplies
• Fan tray
Hot Swapping Non-Redundant Management Modules and Power Supplies; If there is only one CMM or power supply
installed in the chassis and either of these components is removed or replaced, all switch functions will stop until a replacement
is installed. However, hot swapping is not possible on the OS9600 switch because it contains only one CMM slot.
Hot Swapping NI Modules; It is recommended that you hot swap NIs of the same type whenever possible.
Otherwise, the network configuration may be adversely affected.
on the fly by simply removing the module from the switch chassis.
Hot swapping refers to the action of adding, removing, or replacing certain hardware components without powering off
your switch and disrupting other components in the chassis. This feature greatly facilitates hardware upgrades and
maintenance and also allows you to easily replace components in the unlikely event of hardware failure.
The following hardware components can be hot swapped:
• Chassis Management Modules (CMMs)
• Gigabit Ethernet Network Interface modules (GNIs)
• 10-gigabit Ethernet Network Interface modules (XNIs)
• Power supplies
• Fan tray
Hot Swapping Non-Redundant Management Modules and Power Supplies; If there is only one CMM or power supply
installed in the chassis and either of these components is removed or replaced, all switch functions will stop until a replacement
is installed. However, hot swapping is not possible on the OS9600 switch because it contains only one CMM slot.
Hot Swapping NI Modules; It is recommended that you hot swap NIs of the same type whenever possible.
Otherwise, the network configuration may be adversely affected.