Nortel BayStack 460 Switch, Руководство по управлению устройством

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Policy management on the Nortel Ethernet Switch 460, Ethernet Switch 470, and BPS 13
Table 6 describes the allowable Drop Precedence Update actions, based on the
DSCP specification for the same action.
EPM traffic shaping limitations on the Business Policy
Switch
The Business Policy Switch (BPS) 2.0 software allows shaping on different types
of policy actions, depending on the traffic type (layer 2 or 3) and the device port
class (as defined on the BPS). In some cases, the EPM Policy Server does not send
all of the action types accepted by the BPS.
‡ Egress Map - Use COS value from DSCP to COS mapping, based on DSCP from incoming
packet.
** Ignore - Ignore drop precedence.
Table 6 Allowable Drop Precedence actions (underlined text denotes EPM
default setting, where multiple options exist)
DSCP Ignore DSCP Mark Drop
Update Drop
Precedence Update 1-8 * , Egress
Map † , Ignore ‡
* Update 1-8 - Update drop precedence with value of 1-8.
† Egress Map - Use COS value from DSCP to COS mapping, based on DSCP from incoming
packet.
‡ Ignore - Ignore drop precedence.
Defaults **
** Defaults - Use COS value from DSCP to COS mapping, based on DSCP value in action.
Ignore ‡
Note:
You must have the correct MDA module installed on your BPS
units in order for them to accept traffic shaping actions. For more
information, refer to the BPS documentation.