Datasheet

Network Analysis Module (NM-NAM)

Contents

Cisco IOS Release: Multiple releases (see the Feature History Table)

Contents

• Prerequisites for the Network Analysis Module (NM-NAM), page 2

• Restrictions for the Network Analysis Module (NM-NAM), page 2

• Information About the Network Analysis Module (NM-NAM), page 3

• How to Configure and Manage the Network Analysis Module (NM-NAM), page 12

• Configuration Examples for the Network Analysis Module (NM-NAM), page 47

• Additional References, page 53

• Command Reference, page 55

• Glossary, page 75

Prerequisites for the Network Analysis Module (NM-NAM)

• Install Cisco IOS Release 12.3(4)XD, Cisco IOS Release 12.3(7)T, or a later release.

• Install the NM-NAM network module. Make sure that the network module is properly seated and

that the EN (enable) and PWR (power) LEDs come on. Refer to the Cisco Network Modules

Hardware Installation Guide.

• For Cisco 2691, Cisco 3725, and Cisco 3745 routers only, make sure that the router runs ROM

Monitor (ROMMON) Version 12.2(8r)T2 or a later version. This ROMMON version contains a fix

that prevents the router from resetting all the network modules when it is reloaded. Refer to the ROM

Monitor Download Procedures for Cisco 2691, Cisco, 3631, Cisco 3725, and Cisco 3745 Routers.

Restrictions for the Network Analysis Module (NM-NAM)

General Restrictions

• Cisco IOS Release 12.3(4)XD, Cisco IOS Release 12.3(7)T, or a later release is required.

• Network Analysis Module Release 3.2 or a later release is required.

• Only one NM-NAM can be installed in the router at any time.

• SNMPv3 is not supported.

• Online insertion and removal (OIR), or hot swapping network modules, is supported on some

platforms. To find out if your router supports hot swapping, refer to the Network Modules Quick

Start Guide.

Traffic Monitoring Restrictions for the Internal NAM Interface

The following restrictions apply only to traffic that is monitored through the internal NAM interface:

• Only IP traffic can be monitored.

• The NAM Traffic Analyzer (web GUI) provides Layer 3 and higher layer information about the

original packets. The Layer 2 header is modified by the router when it forwards the packets to the

NAM, so the Layer 2 information that the NAM records is not applicable to the original packets.

• When Network Address Translation (NAT) is used, the router forwards packets containing the NAT

“inside” network addresses to the NAM.