Nortel 460 Device Management Manual page 14

14 Policy management on the Nortel Ethernet Switch 460, Ethernet Switch 470, and BPS
In all cases, the 802.1p User Priority value must be known for a flow of packets in
order for shaping to take place. Because packets must be re-marked before the
802.1p User Priority value can be known, Ignore or Drop actions cannot include
shaping functionality. Only Mark actions can include shaping functionality.
Table 7 Shaper limitations on BPS ports
Device software
version
BPS 2.0, 3.0, 3.1
Layer 3
Layer 2
* Mark - Update DSCP with value 0-63.
318396-4.1
Untrusted
Supported with Mark *
action only.
Not supported.
Trusted Unrestricted
Not supported. Supported with
Mark
Not supported. Not supported.
* action only.