Cisco Explorer 4700 Installation Guide download pdf (Page 454)

12-34

Device Manager Guide, Cisco ACE 4700 Series Application Control Engine Appliance

OL-26645-02

Chapter 12 Configuring Traffic Policies

Configuring Virtual Context Policy Maps

Policy maps establish traffic policy for the ACE appliance. The purpose of a traffic policy is to

implement specific ACE appliance functions associated with a traffic class. A traffic policy contains:

• A policy map name.

• A previously created traffic class map or, optionally, the default class map.

• One or more of the individual Layer 3/Layer 4 or Layer 7 policies that specify the actions to be

performed by the ACE appliance.

The ACE appliance executes actions specified in a policy map on a first-match, multi-match, or

all-match basis:

• First-match—With a first-match policy map, the ACE appliance executes only the action specified

against the first classification that it matches. Layer 3/Layer 4 Management Traffic, Layer 7 Server

Load Balancing, Layer 7 Command Inspection - FTP, and Layer 7 HTTP Optimization policy maps

are first-match policy maps.

• Multi-match—With a multi-match policy map, the ACE appliance executes all possible actions

applicable for a specific classification. Layer 3/Layer 4 Network Traffic policy maps are

multi-match policy maps.

• All-match—With an all-match policy map, the ACE appliance attempts to match all specified

conditions against the matching classification and executes the actions of all matching classes until

it encounters a deny for a match request.

You can view a context’s policy maps and their types in the Policy Maps table (Config > Virtual

Contexts > context > Expert > Policy Maps.)

The types of policy maps that you can configure depend on the ACE device type. Table 12-15 lists the

types of policy maps with brief descriptions.

Table 12-15 Policy Maps

Policy Map Description Related Topic

Layer 3/4 Management Traffic

(First-Match)

Layer 3 and Layer 4 policy map for network

management traffic received by the ACE

Setting Policy Map Rules and Actions

for Layer 3/Layer 4 Management

Traffic, page 12-45

Layer 3/4 Network Traffic

(Multi-Match)

Layer 3 and Layer 4 policy map for traffic

passing through the ACE

Setting Policy Map Rules and Actions

for Layer 3/Layer 4 Network Traffic,

page 12-37

Layer 7 Command Inspection - FTP

(First-Match)

Layer 7 policy map for inspection of FTP

commands

Setting Policy Map Rules and Actions

for Layer 7 FTP Command Inspection,

page 12-79

Layer 7 Deep Packet Inspection -

HTTP (All-Match)

Layer 7 policy map for inspection of HTTP

packets

Setting Policy Map Rules and Actions

for Layer 7 HTTP Deep Packet

Inspection, page 12-73

Layer 7 Deep Packet Inspection -

SIP (All-Match)

Layer 7 policy map for inspection of SIP

packets

Setting Policy Map Rules and Actions

for Layer 7 SIP Deep Packet

Inspection, page 12-82

Layer 7 Deep Packet Inspection -

Skinny

Layer 7 policy map for inspection of Skinny

Client Control Protocol (SCCP)

Setting Policy Map Rules and Actions

for Layer 7 Skinny Deep Packet

Inspection, page 12-84

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