This command configures
the parameters/action for the type of Service (ToS) parameter
in the IP tunnel transport protocol header.
Privilege:
Security Administrator,
Administrator
Syntax
tos { value [ af11 | af12 | af13 | af21 | af22 | af23 | af31 | af32 | af33 | af41 | af42 | af43 | be | ef | lower-bits tos_value] | copy }
[ default | no ] tos
default
Sets the IP TOS to
lower bits value of 0.
value [ tos_value ]
Default: af11
Specifies the IP QoS
DSCP per-hop behavior to be marked on the outer header of signalling packets
originating from the Access Gateway. This is a standards-based feature
(RFC 2597). The following forwarding types are supported:
- af11: Assured
Forwarding 11 per-hop behavior
- af12: Assured
Forwarding 12 per-hop behavior
- af13: Assured
Forwarding 13 per-hop behavior
- af21: Assured
Forwarding 21 per-hop behavior
- af22: Assured
Forwarding 22 per-hop behavior
- af23: Assured
Forwarding 23 per-hop behavior
- af31: Assured
Forwarding 31 per-hop behavior
- af32: Assured
Forwarding 32 per-hop behavior
- af33: Assured
Forwarding 33 per-hop behavior
- af41: Assured
Forwarding 41 per-hop behavior
- af42: Assured
Forwarding 42 per-hop behavior
- af43: Assured
Forwarding 43 per-hop behavior
- 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.
lower-bits tos_value
Default: 0
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
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.
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:
tos copy