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| Title | Size | Download |
|---|---|---|
| 03-Data buffer commands | 68.47 KB |
buffer packet-drop alarm enable
buffer packet-drop alarm interval
buffer threshold alarm interval
buffer usage threshold headroom
buffer usage threshold null-queue
buffer usage threshold queue (interface view)
port buffer usage threshold headroom null-queue
port buffer usage threshold null-queue
Data buffer commands
Data buffer commands
buffer packet-drop alarm enable
Use buffer packet-drop alarm enable to enable packet-drop alarms.
Use undo buffer packet-drop alarm enable to disable packet-drop alarms.
Syntax
buffer packet-drop alarm enable
undo buffer packet-drop alarm enable
Default
Packet-drop alarms are disabled.
Views
System view
Predefined user roles
network-admin
Usage guidelines
The device generates and reports packet-drop alarms to a network management system (such as IMC) for displaying the data buffer usage.
This command does not take effect only on the Headroom buffer.
Examples
# Enable packet-drop alarms.
<Sysname> system-view
[Sysname] buffer packet-drop alarm enable
Related commands
buffer usage threshold queue (interface view)
buffer packet-drop alarm interval
buffer packet-drop alarm interval
Use buffer packet-drop alarm interval to set the interval for sending packet-drop alarms.
Use undo buffer packet-drop alarm interval to restore the default.
Syntax
buffer packet-drop alarm interval interval
undo buffer packet-drop alarm interval
Default
The interval for sending packet-drop alarms is 5 seconds.
Views
System view
Predefined user roles
network-admin
Parameters
interval: Specifies the interval for sending packet-drop alarms, in the range of 0 to 60 seconds. The value of 0 indicates that packet-drop alarms are sent immediately after they are generated.
Usage guidelines
This command takes effect only when packet-drop alarms are enabled.
Examples
# Set the interval for sending packet-drop alarms to 20 seconds.
<Sysname> system-view
[Sysname] buffer packet-drop alarm interval 20
Related commands
buffer packet-drop alarm enable
buffer threshold alarm enable
Use buffer threshold alarm enable to enable threshold-crossing alarms.
Use undo buffer threshold alarm enable to disable threshold-crossing alarms.
Syntax
buffer threshold alarm { egress | headroom | ingress } enable
undo buffer threshold alarm { egress | headroom | ingress } enable
Default
Threshold-crossing alarms are disabled.
Views
System view
Predefined user roles
network-admin
Parameters
ingress: Specifies the ingress buffer.
headroom: Specifies the Headroom buffer.
egress: Specifies the egress buffer.
Usage guidelines
The device generates and reports threshold-crossing alarms to a network management system (such as IMC) for displaying the data buffer usage.
Examples
# Enable threshold-crossing alarms.
<Sysname> system-view
[Sysname] buffer threshold alarm ingress enable
Related commands
buffer usage threshold headroom
buffer usage threshold queue (interface view)
buffer threshold alarm interval
Use buffer threshold alarm interval to set the interval for sending threshold-crossing alarms.
Use undo buffer threshold alarm interval to restore the default.
Syntax
buffer threshold alarm { egress | headroom | ingress } interval interval
undo buffer threshold alarm { egress | headroom | ingress } interval
Default
The interval for sending threshold-crossing alarms is 5 seconds.
Views
System view
Predefined user roles
network-admin
Parameters
ingress: Specifies the ingress buffer.
headroom: Specifies the Headroom buffer.
egress: Specifies the egress buffer.
interval: Specifies the interval for sending threshold-crossing alarms, in the range of 0 to 60 seconds. 0 indicates that threshold-crossing alarms are sent immediately after they are generated.
Usage guidelines
This command takes effect only when threshold-crossing alarms are enabled.
Examples
# Set the interval for sending threshold-crossing alarms to 20 seconds.
<Sysname> system-view
[Sysname] buffer threshold alarm ingress interval 20
Related commands
buffer threshold alarm enable
buffer usage threshold headroom
buffer usage threshold queue (interface view)
buffer usage threshold headroom
Use buffer usage threshold headroom to set the global per-queue alarm threshold for the Headroom buffer.
Use undo buffer usage threshold headroom to restore the default.
Syntax
buffer usage threshold headroom slot slot-number ratio ratio
undo buffer usage threshold headroom slot slot-number ratio
Default
The global per-queue alarm threshold for the Headroom buffer is 100%.
Views
System view
Predefined user roles
network-admin
Parameters
slot slot-number: Specifies an IRF member device by its member ID (slot number).
ratio ratio: Specifies the alarm threshold in percentage, in the range of 1 to 100.
Usage guidelines
This command takes effect only when threshold-crossing alarms are enabled. When a queue exceeds the global alarm threshold for the Headroom buffer, the device generates and reports a threshold-crossing alarm to a network management system (such as IMC).
Examples
# Set the global per-queue alarm threshold to 50% for slot 1.
<Sysname> system-view
[Sysname] buffer usage threshold headroom slot 1 ratio 50
Related commands
buffer threshold alarm enable
buffer usage threshold null-queue
Use buffer usage threshold null-queue to set the global per-interface alarm threshold for the ingress or egress buffer.
Use undo buffer usage threshold null-queue to restore the default.
Syntax
buffer { egress | ingress } usage threshold slot slot-number null-queue ratio ratio
undo buffer { egress | ingress } usage threshold slot slot-number null-queue ratio
Default
The global per-queue alarm threshold for the ingress or egress buffer is 100%.
Views
System view
Predefined user roles
network-admin
Parameters
egress: Specifies the egress buffer.
ingress: Specifies the ingress buffer.
slot slot-number: Specifies an IRF member device by its member ID (slot number).
ratio ratio: Specifies the alarm threshold in percentage, in the range of 1 to 100.
Usage guidelines
This command takes effect only when threshold-crossing alarms are enabled.
When the alarm threshold is exceeded, the device generates and reports a threshold-crossing alarm to a network management system (such as IMC).
If you configure both the global alarm threshold and the alarm threshold on an interface, the latter takes effect.
If you configure this command multiple times, the most recent configuration takes effect.
Examples
# Set the global per-interface alarm threshold to 50% in slot 1.
<Sysname> system-view
[Sysname] buffer ingress usage threshold slot 1 interface ratio 50
Related commands
buffer threshold alarm enable
port buffer usage threshold null-queue
buffer usage threshold queue (interface view)
Use buffer usage threshold queue to set the buffer alarm threshold for a queue on an interface.
Use undo buffer usage threshold queue to restore the default.
Syntax
buffer egress usage threshold queue queue-id ratio ratio
undo buffer egress usage threshold queue queue-id ratio
Default
The egress buffer alarm threshold for a queue on an interface is 100%.
Views
Interface view
Predefined user roles
network-admin
Parameters
egress: Specifies the egress buffer.
queue-id: Specifies a queue by its ID in the range of 0 to 7.
ratio ratio: Specifies the alarm threshold in percentage, in the range of 1 to 100.
Usage guidelines
This command takes effect only when threshold-crossing alarms are enabled. When a queue exceeds the alarm threshold for the egress buffer, the device generates and reports a threshold-crossing alarm to a network management system (such as IMC).
Examples
# Set the egress buffer alarm threshold to 50% for queue 1 on GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] buffer egress usage threshold queue 1 ratio 50
Related commands
buffer threshold alarm enable
burst-mode enable
Use burst-mode enable to enable the Burst feature.
Use undo burst-mode enable to disable the Burst feature.
Syntax
burst-mode enable
undo burst-mode enable
Default
The Burst feature is disabled.
Views
System view
Predefined user roles
network-admin
Usage guidelines
The Burst feature is especially useful for reducing packet losses under the following circumstances:
· Broadcast or multicast traffic is intensive, resulting in bursts of traffic.
· Traffic enters a device from a high-speed interface and goes out of a low-speed interface.
· Traffic enters a device from multiple same-rate interfaces and goes out of an interface with the same rate.
Examples
# Enable the Burst feature.
<Sysname> system-view
[Sysname] burst-mode enable
port buffer usage threshold headroom null-queue
Use port buffer usage threshold headroom null-queue to set the per-interface alarm threshold for the Headroom buffer.
Use undo port buffer usage threshold headroom null-queue to restore the default.
Syntax
port buffer usage threshold headroom null-queue ratio ratio
undo port buffer usage threshold headroom null-queue ratio
Default
The global alarm threshold for the Headroom buffer is used.
Views
Layer 2 Ethernet interface view
Layer 3 Ethernet interface view
Predefined user roles
network-admin
Parameters
ratio ratio: Specifies the alarm threshold in percentage, in the range of 1 to 100.
Usage guidelines
This command takes effect only when threshold-crossing alarms are enabled. When the global alarm threshold for the Headroom buffer is exceeded, the device generates and reports a threshold-crossing alarm to a network management system (such as IMC).
If you configure both the global alarm threshold and the alarm threshold on an interface, the latter takes effect.
If you configure this command multiple times, the most recent configuration takes effect.
Examples
# Set the alarm threshold to 50% on GigabitEthernet1/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname–GigabitEthernet1/0/1] port buffer usage threshold headroom null-queue ratio 50
Related commands
buffer threshold alarm enable
buffer usage threshold headroom
port buffer usage threshold null-queue
Use port buffer usage threshold null-queue to set the per-interface alarm threshold for the ingress or egress buffer.
Use undo port buffer usage threshold null-queue to restore the default.
Syntax
port buffer { egress | ingress } usage threshold null-queue ratio ratio
undo port buffer { egress | ingress } usage threshold null-queue ratio
Default
The global alarm threshold for the ingress or egress buffer is used.
Views
Layer 2 Ethernet interface view
Layer 3 Ethernet interface view
Predefined user roles
network-admin
Parameters
egress: Specifies the egress buffer.
ingress: Specifies the ingress buffer.
ratio ratio: Specifies the alarm threshold in percentage, in the range of 1 to 100.
Usage guidelines
This command takes effect only when threshold-crossing alarms are enabled. When the global alarm threshold for the Headroom buffer is exceeded, the device generates and reports a threshold-crossing alarm to a network management system (such as IMC).
If you configure both the global alarm threshold and the alarm threshold on an interface, the latter takes effect.
If you configure this command multiple times, the most recent configuration takes effect.
Examples
# Set the alarm threshold to 50% on GigabitEthernet1/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] port buffer ingress usage threshold null-queue ratio 50
Related commands
buffer threshold alarm enable
buffer usage threshold null-queue
