
634 Chapter 67 Configuring IP Filter Rules
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Outbound Rules
Rules are created to block, pass, or pass and mark based on the following information: source IP
address, source mask, source port, destination IP address, destination mask, destination port,
protocol, ToS byte, packet direction, source routing, and IP header options.
A packet is processed as follows:
1 The BCM receives, or generates, a packet.
2 Filters are applied.
3 Filter actions are taken and the packet can be modified (DSCP).
4 The packet is assigned a QoS class. A QoS class is designated using the DSCP values and the
packet is placed in the appropriate egress queue according to its priority marking as described
above.
5 The queues are serviced in a round-robin fashion (strict priority or HTB).
Traffic monitoring overview
BCM enables system administrators to implement classes of service and assign priority levels to
different types of traffic. Using Element Manager, you can configure rules that monitor the
characteristics of traffic (for example, its source, destination, and protocol) and perform a
controlling action on the traffic when certain user-defined characteristics are matched.
Refer to:
• Differentiated Services (DiffServ) overview
• “DiffServ components” on page 636
• “IP service classes” on page 636
Destination start port <1-65535> Specify the start of a port range when Destination Port is
set to CUSTOM.
The value must be less or equal to Destination End Port.
Destination end port <1-65535> Specify the end of a port range when Destination Port is
set to CUSTOM.
The value must be greater or equal to Destination Start
Port.
Table 154 Add Inbound Filter Rule (Sheet 5 of 5)
Attribute Value Description
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