Netgear M4300-52G (GSM4352S) - Stackable Managed Switch with 48x1G and 4x10G including 2x10GBASE-T and 2xSFP+ Layer 3 管理员指南
Tools
417
Managed Switches
Error Disablement and Automatic Error Recovery
The switch supports interface error disablement, also referred to as Diagnostic Disable
(D-Disable), and error autorecovery of the disabled interface. If the switch detects an error
condition for an interface, it places the interface in a diagnostic-disabled (error-disabled)
state by shutting down the interface. The error-disabled interface does not allow any traffic
until the interface is reenabled.
(D-Disable), and error autorecovery of the disabled interface. If the switch detects an error
condition for an interface, it places the interface in a diagnostic-disabled (error-disabled)
state by shutting down the interface. The error-disabled interface does not allow any traffic
until the interface is reenabled.
Either you can manually reenable the error-disabled interface or you can enable the error
autorecovery feature, which automatically reenables the interface after the expiration of the
time-out interval. The default time-out for autorecovery is 300 seconds. If an interface is
reenabled but the reason that the interface was placed in the D-Disable state is not resolved,
the interface is placed back in the D-Disable state.
autorecovery feature, which automatically reenables the interface after the expiration of the
time-out interval. The default time-out for autorecovery is 300 seconds. If an interface is
reenabled but the reason that the interface was placed in the D-Disable state is not resolved,
the interface is placed back in the D-Disable state.
The following features are supported by autorecovery:
•
Keepalive. If loop protection is enabled, loop protection detects a loop, and the loop
protection action is to disable the interface, the interface is placed in the D-Disable state.
If autorecovery is enabled, the interface comes back up after the time-out interval
expires.
protection action is to disable the interface, the interface is placed in the D-Disable state.
If autorecovery is enabled, the interface comes back up after the time-out interval
expires.
•
BPDU storm. If the number of BPDUs exceeds 15 for three consecutive seconds, the
interface is placed in the D-Disable state. If autorecovery is enabled, the interface comes
back up after the time-out interval expires.
interface is placed in the D-Disable state. If autorecovery is enabled, the interface comes
back up after the time-out interval expires.
•
BPDU guard. The STP BPDU guard feature lets you enforce the STP domain borders
and keep the active topology consistent and predictable. (Switches behind edge ports for
which STP BPDU guard is enabled cannot influence the overall STP topology.) If the
BPDU guard feature is enabled and a port receives BPDUs, the port is placed in the
D-Disable state. If autorecovery is enabled, the port comes back up after the time-out
interval expires.
and keep the active topology consistent and predictable. (Switches behind edge ports for
which STP BPDU guard is enabled cannot influence the overall STP topology.) If the
BPDU guard feature is enabled and a port receives BPDUs, the port is placed in the
D-Disable state. If autorecovery is enabled, the port comes back up after the time-out
interval expires.
•
Broadcast storm. If broadcast storm control is enabled, the threshold value is exceeded,
and the broadcast storm action is to disable the interface, the interface is placed in the
D-Disable state. If autorecovery is enabled, the interface comes back up after the
time-out interval expires.
and the broadcast storm action is to disable the interface, the interface is placed in the
D-Disable state. If autorecovery is enabled, the interface comes back up after the
time-out interval expires.
•
Multicast storm. If multicast storm control is enabled, the threshold value is exceeded,
and the multicast storm action is to disable the interface, the interface is placed in the
D-Disable state. If autorecovery is enabled, the interface comes back up after the
time-out interval expires.
and the multicast storm action is to disable the interface, the interface is placed in the
D-Disable state. If autorecovery is enabled, the interface comes back up after the
time-out interval expires.
•
Unicast storm. If unicast storm control is enabled, the threshold value is exceeded, and
the unicast storm action is to disable the interface, the interface is placed in the D-Disable
state. If autorecovery is enabled, the interface comes back up after the time-out interval
expires.
the unicast storm action is to disable the interface, the interface is placed in the D-Disable
state. If autorecovery is enabled, the interface comes back up after the time-out interval
expires.
•
Auto-DoS. If auto-DoS is enabled and the switch detects a DoS attack, the interface is
placed in the D-Disable state. If autorecovery is enabled, the interface comes back up
after the time-out interval expires.
after the time-out interval expires.
•
Port MAC address locking. If dynamic MAC address locking is configured, the number
of MAC addresses exceeds the threshold, and the port security violation action is to shut
of MAC addresses exceeds the threshold, and the port security violation action is to shut