Cisco Cisco ASR 5000
GRE Tunnel Interface Configuration Mode Commands
tos ▀
Command Line Interface Reference, StarOS Release 18 ▄
6079
be
: Best Effort forwarding per-hop behavior
ef
: Expedited Forwarding per-hop behavior typically dedicated to low-loss, low-latency traffic.
The assured forwarding behavior groups are listed in the table below.
Class 1
Class 2
Class 3
Class 4
Low Drop
AF11
AF21
AF31
AF41
Medium Drop AF12
AF22
AF32
AF42
High Drop
AF13
AF23
AF33
AF43
Traffic marked with a higher class is given priority during congestion periods. If congestion occurs to traffic
with the same class, the packets with the higher AF value are dropped first.
with the same class, the packets with the higher AF value are dropped first.
lower-bits
tos_value
Default: 0
Sets the least-significant 6 bits in the ToS byte with the specified numeric value.
Sets the least-significant 6 bits in the ToS byte with the specified numeric value.
tos_value
must be an integer from 0 through 255.
copy
This keyword instructs the system to copy the ToS value from the passenger IPv4 packet or Traffic class
value from the passenger IPv6 packet to the ToS value of the IPv4 tunnel transport protocol header
value from the passenger IPv6 packet to the ToS value of the IPv4 tunnel transport protocol header
Usage
Use this command either to set the ToS parameter in the IPv4 tunnel transport protocol header to the specified
value or instructs to copy the ToS value from the passenger IPv4 packet or Traffic class value from the
passenger IPv6 packet to the ToS value of the IPv4 tunnel transport protocol header. If one of the enumerated
values is set, the DSCP bits which are the six most-significant bits in the ToS byte are marked. If the integer
value is set, it will be written into the six least-significant bits of the ToS byte.
value or instructs to copy the ToS value from the passenger IPv4 packet or Traffic class value from the
passenger IPv6 packet to the ToS value of the IPv4 tunnel transport protocol header. If one of the enumerated
values is set, the DSCP bits which are the six most-significant bits in the ToS byte are marked. If the integer
value is set, it will be written into the six least-significant bits of the ToS byte.
Example
The following command instructs the system to copy the ToS value from the passenger IPv4 packet or Traffic
class value from the passenger IPv6 packet to the ToS value of the IPv4 tunnel transport protocol header:
class value from the passenger IPv6 packet to the ToS value of the IPv4 tunnel transport protocol header:
tos copy