Administrator Guide

Usage
Information
The tunnel interface is inoperable without a valid tunnel destination address for the configured Tunnel
mode.
To establish a logical tunnel to the particular destination address, use the destination address of the outer
tunnel header. If you configure a tunnel interface or source address, the tunnel destination must be
compatible.
tunnel dscp
Configure the method to set the DSCP in the outer tunnel header.
C9000 Series
Syntax
tunnel dscp {mapped | value}
To use the default tunnel mapping behavior, use the no tunnel dscp value command.
Parameters
mapped Enter the keyword mapped to map the original packet DSCP (IPv4)/Traffic Class
(IPv6) to the tunnel header DSCP (IPv4)/Traffic Class (IPv6) depending on the
mode of tunnel.
value Enter a value to set the DSCP value in the tunnel header. The range is from 0 to
63. The default value of 0 denotes mapping of original packet DSCP (IPv4)/Traffic
Class (IPv6) to the tunnel header DSCP (IPv4)/Traffic Class (IPv6) depending on
the mode of tunnel.
Defaults 0 (Mapped)
Command Modes INTERFACE TUNNEL (conf-if-tu)
Command
History
Version Description
9.9(0.0) Introduced on the C9010.
9.7(0.0) Introduced on the S6000-ON.
9.5(0.1) Introduced on the Z9500.
9.3(0.0) Introduced on the S6000, S4810, S4820T, Z9000.
Usage
Information
This command configures the method used to set the high 6 bits (the differentiated services codepoint)
of the IPv4 TOS or the IPv6 traffic class in the outer IP header.
A value of 0 copies original packet DSCP (IPv4)/Traffic Class (IPv6) to the tunnel header DSCP (IPv4)/
Traffic Class (IPv6) depending on the mode of tunnel.
tunnel flow-label
Configure the method to set the IPv6 flow label value in the outer tunnel header.
C9000 Series
Syntax
tunnel flow-label value
To return to the default value of 0, use the no tunnel flow-label value command.
Parameters
value Enter a value to set the IPv6 flow label value in the tunnel header. The range is
from 0 to 1048575. The default value is 0.
Tunneling Commands 1723