Configuration Guide User guide

FastIron Configuration Guide 1773
53-1002494-02
Chaptera
42
Traffic Policies
Table 288 lists the individual Brocade FastIron switches and the traffic policy features they
support. These features are supported in the Layer 2, base Layer 3, edge Layer 3, and full Layer 3
software images, except where explicitly noted.
Traffic policies overview
This chapter describes how traffic policies are implemented and configured on the FastIron
devices.
Brocade devices use traffic policies for the following reasons:
• To rate limit inbound traffic
• To count the packets and bytes per packet to which ACL permit or deny clauses are applied
Traffic policies consist of policy names and policy definitions:
• Traffic policy name – A string of up to eight alphanumeric characters that identifies individual
traffic policy definitions.
• Traffic policy definition (TPD) – The command filter associated with a traffic policy name. A
TPD can define any one of the following:
• Rate limiting policy
TABLE 288 Supported traffic policy features
Feature FESX
FSX 800
FSX 1600
FWS FCX ICX 6610 ICX 6430
ICX 6450
Traffic policies Yes Yes Yes Yes Yes
ACL-based fixed rate limiting Yes Yes Yes Yes Yes
ACL-based adaptive rate limiting Yes No Yes Yes Yes
802.1p priority bit inspection in the ACL
for adaptive rate limiting
Yes
(IPv6 devices
only)
No Yes Yes Yes
ACL statistics Yes Yes Yes Yes Yes. ICX
6430
does not
support
creating a
policy that
only
counts
packets.
CPU rate-limiting Yes Yes Yes Yes Yes