qos link-adjustment link-layer-exclude l2tp-layer-exclude
Function
The qos link-adjustment link-layer-exclude l2tp-layer-exclude command enables CAR for Layer 3 packets and statistics about Layer 3 packets.
The undo qos link-adjustment link-layer-exclude l2tp-layer-exclude command disables CAR for Layer 3 packets and statistics about Layer 3 packets.
By default, CAR for Layer 3 packets and statistics about Layer 3 packets are not enabled.
This command is supported only on the NetEngine 8000 F1A.
Format
qos link-adjustment { link-layer-exclude | l2tp-layer-exclude } [ slot slot-id ]
qos link-adjustment link-layer-exclude access-type leased-line-access [ slot slot-id ]
undo qos link-adjustment { link-layer-exclude | l2tp-layer-exclude } [ slot slot-id ]
undo qos link-adjustment link-layer-exclude access-type leased-line-access [ slot slot-id ]
qos link-adjustment { link-layer-exclude | l2tp-layer-exclude }
qos link-adjustment link-layer-exclude access-type leased-line-access
undo qos link-adjustment { link-layer-exclude | l2tp-layer-exclude }
undo qos link-adjustment link-layer-exclude access-type leased-line-access
Parameters
| Parameter | Description | Value |
|---|---|---|
| slot slot-id |
Specifies the slot ID of the interface board where CAR and statistics are enabled for Layer 3 packets. |
The value is a string of 1 to 31 case-sensitive characters, spaces not supported. |
| access-type |
Specify access type. |
- |
| leased-line-access |
Specify access type. |
- |
Usage Guidelines
Usage Scenario
After this command is configured, CAR and statistics are implemented only on Layer 3 packets. Layer 2 packets are ignored. If this command is not configured, CAR and statistics are implemented on all packets.
NOTE: The command takes effect on all interfaces that are located on the specified interface board.- The qos link-adjustment link-layer-exclude command configures the device to ignore Layer 2 headers during CAR operations and to collect statistics only about non-L2TP LNS users instead of residential users.
- The undo qos link-adjustment link-layer-exclude command disables the device from ignoring Layer 2 headers during CAR operations.
- The qos link-adjustment l2tp-layer-exclude command configures the device to ignore Layer 2 and L2TP headers during CAR operations, to apply CAR only to Layer 3 packets, and collect statistics only about L2TP users.
- The undo qos link-adjustment l2tp-layer-exclude command disable the device from ignoring Layer 2 and L2TP headers during CAR operations, applying CAR only to Layer 3 packets, and collecting statistics only about L2TP LNS users instead of LAC users.
- The qos link-adjustment link-layer-exclude access-type leased-line-access [ slot slot-id ] command configures the device to ignore Layer 2 headers when CAR is performed in leased line user access scenarios.
- The **undo qos link-adjustment link-layer-exclude access-type leased-line-access ** [ slot slot-id ] command disables the device from ignoring Layer 2 headers when CAR is performed in leased line user access scenarios. The downstream LNS performs CAR on packets carrying L2TP headers, affecting CAR precision. After the qos link-adjustment l2tp-layer-exclude command is run, the device ignores L2TP headers when collecting traffic statistics about L2TP LNS users. That is, the length of collected packets decreases, improving CAR precision. Traffic statistics about non-L2TP LNS users are not affected. The qos link-adjustment l2tp-layer-exclude command takes effect only for new access L2TP LNS users.
Precautions
This command is supported only on the admin VS.
The parameter link-layer-exclude cannot be specified to a slot.