Setting the DSCP value for packets sent by the SSH client

A field in an IPv4 or IPv6 header contains 8 bits and is used to identify the service type of an IP packet. In an IPv4 packet, this field is called "Type of Service (ToS)." In an IPv6 packet, this field is called "Traffic class." According to RFC 2474, the ToS field is redefined as the differentiated services (DS) field, where a DSCP value is represented by the first six bits (0 to 5) and is in the range 0 to 63. The remaining two bits (6 and 7) are reserved. When a packet is being transmitted, the network devices can identify its DSCP value, and determines the transmission priority of the packet according to the DSCP value.

To set the DSCP value for packets sent by the SSH client:

Step	Command	Remarks
1. Enter system view.	system-view	N/A
2. Set the DSCP value for packets sent by the SSH client.	Set the DSCP value for IPv4 packets sent by the SSH client:ssh client dscp dscp-value Set the DSCP value for IPv6 packets sent by the SSH client:ssh client ipv6 dscp dscp-value	Optional. By default, the DSCP value is 16 in IPv4 packets sent by the SSH client and is 0 in IPv6 packets sent by the SSH client.

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Set the DSCP value for packets sent by the SSH client.

Set the DSCP value for IPv4 packets sent by the SSH client:ssh client dscp dscp-value
Set the DSCP value for IPv6 packets sent by the SSH client:ssh client ipv6 dscp dscp-value

Optional.

By default, the DSCP value is 16 in IPv4 packets sent by the SSH client and is 0 in IPv6 packets sent by the SSH client.

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