Working with Rx and Tx Ring Parameters on Scalable Chassis

Use the ethtool command in the Expert mode to change in the size of Rx (receive) and Tx (transmit) ring parameters.

The ring parameters are also called interface buffers.

This change is supported only for the BPEth0 and BPEth1 interfaces.

Viewing the Current Configuration

ethtool -g {BPEth0 | BPEth1}

Example:

[Expert@SG-s01-01:0]# ethtool -g BPEth0

Ring parameters for BPEth0:

Pre-set maximums:

RX: 4096

RX Mini: 0

RX Jumbo: 0

TX: 4096

Current hardware settings:

RX: 256

RX Mini: 0

RX Jumbo: 0

TX: 1024

[Expert@SG-s01-01:0]#

Configuring the Rx (Receive) Ring Parameter

ethtool -G {BPEth0 | BPEth1} rx <Rx Size>

Example:

[Expert@MyChassis-s01-01:0]# ethtool -G BPEth0 rx 4096

Configuring the Tx (Rransmit) Ring Parameter

ethtool -G {BPEth0 | BPEth1} tx <Tx Size>

Example:

[Expert@MyChassis-s01-01:0]# ethtool -G BPEth0 tx 4096

Configuring the Rx (Receive) and Tx (Transmit) Ring Parameters

ethtool -G {BPEth0 | BPEth1} rx <Rx Size> tx <Tx Size>

Example:

[Expert@MyChassis-s01-01:0]# ethtool -G BPEth0 rx 4096 tx 4096