Cisco ASR 5000 Series Administration Manual page 16

▀ Basic Features and Functionality
Figure 1.
Note that protocol names are used to represent the individual protocol analyzers.
Each analyzer consists of fields and states that are compared to the protocol-fields and protocol-states in the incoming
packets to determine packet content.
Important:
for HTTP header fields.
Rule Definitions
Rule definitions (ruledefs) are user-defined expressions based on protocol fields and protocol states, which define what
actions to take on packets when specified field values match.
▄ Cisco ASR 5x00 Enhanced Charging Services Administration Guide
16
ECS Protocol Analyzer Stack
In 14.0 and later releases, the ECS HTTP analyzer supports both CRLF and LF as valid terminators
Enhanced Charging Service Overview