7-26
Cisco SCE 8000 10GBE Software Configuration Guide
OL-30621-02
Chapter 7 Configuring Line Interfaces
Configuring Traffic Rules and Counters
Configuring Traffic Rules and Counters
•
Traffic Rules and Counters, page 7-26
•
Configuring Traffic Counters, page 7-28
•
Configuring Traffic Rules, page 7-29
•
Managing Traffic Rules and Counters, page 7-34
Traffic Rules and Counters
•
What are Traffic Rules and Counters?, page 7-26
•
•
What are Traffic Rules and Counters?
Traffic rules and counters may be configured by the user. This functionality enables the user to define
specific operations on the traffic flowing through the Cisco SCE Platform, such as blocking or ignoring
certain flows or counting certain packets. The configuration of traffic rules and counters is independent
of the application loaded by the Cisco SCE platform, and thus is preserved when the application being
run by the Cisco SCE platform is changed.
Possible uses for traffic rules and counters include:
•
Enabling the user to count packets according to various criteria. Since the traffic counters are
readable via the
ciscoServiceControlTpStats
MIB, these might be used to monitor up to 32 types of
packets, according to the requirements of the installation.
•
Ignoring certain types of flows. When a traffic rules specifies an “ignore” action, packets matching
the rule criteria will not open a new flow, but will pass through the Cisco SCE platform without
being processed. This is useful when a particular type of traffic should be ignored by the Cisco SCE
platform.
Possible examples include ignoring traffic from a certain IP range known to require no service, or
traffic from a certain protocol.
•
Blocking certain types of flows. When a traffic rules specifies a “block” action, packets matching
the rule criteria (and not belonging to an existing flow) will be dropped and not passed to the other
interface. This is useful when a particular type of traffic should be blocked by the Cisco SCE
platform.
Possible examples include performing ingress source address filtering (dropping packets originating
from a subscriber port whose IP address does not belong to any defined subscriber-side subnet), or
blocking specific ports.
It should be noted that using traffic rules and counters does not affect performance. It is possible to
define the maximum number of both traffic rules and counters without causing any degradation in the
Cisco SCE platform performance.