hostcar drop-rate enable

Usage Scenario

If a user sends excessive packets to the CPU, causing link congestion and affecting processing efficiency of the CPU, you can run the hostcar drop-rate enable command to enable the device to automatically adjust user bandwidth.

By default, a device automatically adjusts the bandwidth to 8 Kbit/s for a user.

The hostcar drop-rate enable command takes effect only for the bandwidth of users that send excessive packets to the CPU, whereas the hostcar command takes effect for the bandwidth of all users that send packets to the CPU on a board.

When a user sends a great number of web packets to the CPU, the link is congested, and the CPU efficiency is affected. To resolve this problem, run the http-hostcar drop-rate enable command to enable the automatic bandwidth adjustment function.

By default, if the packet loss rate of a CAR ID exceeds a specific threshold, the system adjusts the bandwidth of the CAR ID to 64 kbit/s.

The http-hostcar drop-rate enable command takes effect only for the bandwidth of users that send excessive packets to the CPU, whereas the http-hostcar command takes effect for the bandwidth of all users that send packets to the CPU.

When a user sends a great number of packets with the same VLAN ID to the CPU, the link is congested, and the CPU efficiency is affected. To resolve this problem, run the vlan-host-car drop-rate enable command to enable the automatic bandwidth adjustment function.

After the vlan-host-car drop-rate enable command is run, if the packet loss rate of a CAR ID exceeds a specific threshold, the system adjusts the bandwidth of the CAR ID to 128 kbit/s.

The vlan-host-car drop-rate enable command takes effect only for the bandwidth of users that send excessive packets to the CPU, whereas the vlan-host-car command takes effect for the bandwidth of all users that send packets to the CPU.

Precautions

After the hostcar drop-rate enable command is run, the hostcar drop-rate enable command configuration preferentially applies to users when the users send excessive packets to the CPU, regardless of whether the hostcar command is run. When the users no longer send excessive packets to the CPU, the hostcar command configuration applies to the users.

After the http-hostcar drop-rate enable command is run, the http-hostcar drop-rate enable command configuration preferentially applies to users when the users send excessive packets to the CPU, regardless of whether the http-hostcar command is run. When the users no longer send excessive packets to the CPU, the http-hostcar command configuration applies to the users.

After the vlan-host-car drop-rate enable command is run, the vlan-host-car drop-rate enable command configuration preferentially applies to users when the users send excessive packets to the CPU, regardless of whether the vlan-host-car command is run. When the users no longer send excessive packets to the CPU, the vlan-host-car command configuration applies to the users.

In VS mode, this command is supported only by the admin VS.