Datasheet

Network Analysis Module (NM-NAM)
Information About the Network Analysis Module (NM-NAM)
6
Cisco IOS Release: Multiple releases (see the Feature History Table)
Internal NAM Interface
The internal NAM interface is used for monitoring traffic that passes through router interfaces. You can
also select the internal NAM interface as the management interface for the NAM.
Visible only to the NAM software on the NM-NAM, the internal NAM interface is the Fast Ethernet
interface on the NM-NAM that connects to the Analysis-Module interface on the router. The internal
NAM interface is connected to the PCI bus on the NM-NAM, and all configuration and management of
the internal NAM interface must be performed from the NAM software.
External NAM Interface
The external NAM interface can be used to monitor LAN traffic. You can also select the external NAM
interface as the management interface for the NAM.
Visible only to the NAM software on the NM-NAM, the external NAM interface is the Fast Ethernet
interface on the NM-NAM faceplate (see Figure 1 on page 4). The external NAM interface supports data
requests and data transfers from outside sources, and it provides direct connectivity to the LAN through
an RJ-45 connector. All configuration and management of the external NAM interface must be
performed from the NAM software.
NM-NAM Operating Topologies and IP Address Assignments
This section includes the following topics:
• Management Traffic—Choose One of the NM-NAM Interfaces, page 6
• Monitored Traffic—Use One or Both of the NM-NAM Interfaces, page 7
• Sample Operating Topologies, page 8
Management Traffic—Choose One of the NM-NAM Interfaces
Select either the internal or external NAM interface to handle management traffic such as IP, HTTP,
SNMP, Telnet, and SSH. You cannot send management traffic through both NAM interfaces at the same
time.
How you assign IP addresses on the NAM network interfaces depends on which NAM interface, internal
or external, you use for management traffic. See the following sections:
• Internal NAM Interface for Management Traffic—How to Assign IP Addresses, page 6
• External NAM Interface for Management Traffic—How to Assign IP Addresses, page 7
Internal NAM Interface for Management Traffic—How to Assign IP Addresses
If you select the internal NAM interface to handle management traffic:
• For the Analysis-Module interface (in Cisco IOS CLI), assign an IP address from a routable subnet.
To conserve IP address space, you can configure the Analysis-Module as an IP unnumbered
interface and borrow the IP address of another router interface, such as a Fast Ethernet or loopback
interface. The borrowed IP address must come from a routable subnet.
• For the NAM system (in NAM CLI), assign an IP address from the same subnet that is assigned to
the Analysis-Module interface.