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Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide
OL-15667-03
Appendix A Cisco 3825 Mobile Wireless Edge Router RAN-O Command Reference
ip tos (l2tp)
ip tos (l2tp)
To configure the Type of Service (ToS) byte in the header of Layer 2 tunneled packets, use the
ip tos
command in the pseudowire-class configuration mode. To disable a configured ToS value or IP ToS
reflection, use the
no
form of this command.
ip tos
{
value
value
|
reflect
}
no tos
{
value
value
|
reflect
}
Syntax Description
Defaults
The default ToS value is 0.
Command Modes
Pseudowire-class configuration
Command History
Usage Guidelines
The
ip tos
command allows you to manually configure the value of the ToS byte used in the headers of
Layer 2 tunneled packets or to have the ToS value reflected from the IP header of the encapsulated
packet.
Note
IP ToS byte reflection functions only if traffic in an L2TPv3 session carries IP packets as its payload.
In addition, you can configure both IP ToS reflection and a ToS priority level (from 0 to 255) for a
pseudowire-class. In this case, the ToS value in the tunnel header defaults to the value you specify with
the
ip tos value
value
command. IP packets received on the Layer 2 interface and encapsulated into the
L2TPv3 session have their ToS byte reflected into the outer IP session, overriding the default value
configured with the
ip tos value
value
command.
Examples
In the following example, the ToS byte in the headers of tunneled packets in Layer 2 tunnels created from
the pseudowire-class named “l2tp” is set as 5:
Router#
config t
Router(config)#
pseudowire-class l2tp
Router(config-pw-class)#
ip tos 5
value
value
Sets the value of the ToS byte for IP packets in a L2TPv3 session. Valid
values range from 0 to 255. The default value is 0.
reflect
Sets the value of the ToS byte for IP packets in an L2TPv3 session to be
reflected from the inner IP header.
Release
Modification
12.0(23)S
This command was introduced.
12.3(2)T
This command was integrated into Cisco IOS Release 12.3(2)T.
12.4(12)MR2
This command was integrated into Cisco IOS Release 12.4(12)MR2.