# tos

#### Syntax

tos tosValue

no tos

#### Release Information

Command introduced before JunosE Release 7.1.0.

#### Description

Defines a type of service byte in the RTR operation’s IP header. The no version returns the operation to the default value.

#### Options

- tosValue—ToS byte in the IP header; number in the range 0–255; default value is 0 for both RTR types

#### Mode

RTR Configuration