Brocade Multi-Service IronWare QoS and Traffic Management Configuration Guide (Supporting R05.6.00) - Manual (Page 91)

Multi-Service IronWare QoS and Traffic Management Configuration Guide 77
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Backward compatibility with pre-03.8.00
4
Backward compatibility with pre-03.8.00
A number of the commands used in prior releases for QoS configuration have been deprecated and
the functions performed by them has been taken over by new commands. The qos-tos-trust and
qos-tos mark commands are still operative although their use is discouraged. Additionally, the
qos-tos map dscp-priority commands that are in a current configuration are converted to new
commands during a software upgrade. For details concerning each of these compatibility issues,
refer to the following sections:
• “Commands deprecated in version 03.8.00”
• “qos-tos trust and qos-tos mark commands”
• “qos-tos trust and qos-tos mark commands”
Commands deprecated in version 03.8.00
Table 17 describes each of the commands that were deprecated with version 3.8.00, the purpose
of the command, and the equivalent functionality available in versions 03.8.00 and later.
qos-tos trust and qos-tos mark commands
The qos-tos trust and qos-tos mark commands are retained in 03.8.00 and later versions of the
Multi-Service IronWare software as described in the following:
TABLE 17 Deprecated commands from pre-03.8.00 releases
Pre-03.8.00
command Purpose of the
pre-03.8.00 command Equivalent in advanced QoS infrastructure
port-priority
Initializes the global TOS or DSCP
table. Once executed, the priority
from the DSCP bits is merged with
other priorities
NOTE: By default, DSCP
processing is ignored.
•
Default behavior is now to process DSCP.
•
The global DSCP table is now extended into a
per-port DSCP table.
•
If not desired use the following command:
qos dscp encode-policy all-zero-map
qos-tos
at the interface
level
Initializes the global TOS or DSCP
table. Once executed, the priority
from the DSCP bits is merged with
other priorities
•
Default behavior is now to process DSCP.
•
The global DSCP table is now extended into a
per-port DSCP table.
•
If not desired use the following command at the
physical interface level:
qos dscp encode-policy all-zero-map
merge-egress-
priorities
Allows a packet to be sent out with
the higher of two possible values:
•
the initial IEEE 802.1p value
that the packet arrived with
•
a new (higher) priority that
the packet has been forced
to.
This feature is no longer supported because it is not
useful. Typically, if a packet is remarked, we want the
remarked priority value to be reflected in the outgoing
packet and not be a merge of two priorities.
qos-tos map
dscp-priority
at the global
configuration level
Initializes entries in the global
TOS or DSCP table. These commands are deprecated and converted into a
special decode map named: USER_DSCP_MAP. This
process is described in detail in
“DSCP-priority mapping
commands” on page 78.