Nortel Networks 2000 Summary of actions

Chapter4 Policy-enabled networks 275
Using the Business Policy Switch 2000 Version 1.2
—Layer 4 destination port number
—Ingress port number
•Layer 2 packets
—VLAN ID number
—IEEE 802.1q tag presence
—EtherType, which is the Layer 3 protocol type (such as AppleTalk)
—IEEE 802.1p user priority values
—Ingress port number
—For EtherType IP:
—DSCP value
—IP protocol type (such as TCP/UDP)
—TCP/UDP source port range
—TCP/UDP destination port range
Summary of actions
The BPS 2000 filters collectively direct the system to initiate the following actions
on a packet, depending on your configuration:
•Pass or Drop
•Re-mark the packet when Pass is selected
—Re-mark a new DiffServ Codepoint (DSCP)
—Re-mark the 802.1p field
—Assign a drop precedence
Figure 101 provides a schematic overview of QoS policies.