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NM-1FE-TX Network Processor Module

Overview

In an effort to drive adoption of Fast Ethernet technology across

its product line, a Fast Ethernet network module (NM-1FE-TX)

for the Cisco 3600 series routers (Cisco 3620, Cisco 3640) is now

being made available. The NM-1FE-TX module (see Figure 2) is

ideal for a wide range of local-area applications and supports

many features and standards designed for internetworking in

general. The single-port network module can support 10 or 100

Mbps, and the speed is autosensed. The following examples

describe typical customer applications for using the

NM-1FE-TX module.

NM-1FE-TX Applications/Benefits

VLAN Routing

Virtual LAN (VLAN) support on the NM-1FE-TX module

enables network managers to group users logically rather than by

physical location, easing adds, moves, and changes. VLAN trafﬁc

can be transported using Cisco’s ISL protocol for communication

with the Catalyst 5000, 5500, and 3000 switches. Routing is

possible between VLANs in Cisco switches such as the Catalyst

5000, 5500, Catalyst 3000 series, and the Catalyst 1900 and 2820

series switches. Support for the upcoming industry standard

802.1Q will be available when the standard is ﬁnalized.

The high performance of the underlying Cisco 3600

combined with the feature-rich NM-1FE-TX module makes it an

ideal combination for a low-density, higher-performance

application such as inter-VLAN routing. (See Figure 2.) This

application is often referred to as a “router-on-a-stick”

application.

High-Speed Interconnect

The NM-1FE-TX module enables network managers to

implement their Fast Ethernet routing solutions for optimal cost

and performance across a wide range of applications, including

campus/enterprise backbones and data centers. It is also a

low-cost way for Fast Ethernet access to traditional low-speed

WAN services.

Local-Area Network Aggregation

The Cisco 3600 router can support as many as eight Ethernet and

three Ethernet/three Token Ring platforms connected to a Fast

Ethernet network. High-density serial (up to 12 T1/E1, 24

low-speed synch, or 96 low-speed asynch serial) and ISDN (6

PRI, 24 BRI) interfaces are also supported.

Finally, in conjunction with the Catalyst 3000 or 5000/5500

system, the Fast Ethernet processor can be used to aggregate up to

eight 10-Mbps LANs and give them high-speed access to such

Layer 3 routing services as ﬁrewalling and access lists.

Figure 2 Inter-VLAN Routing Using Cisco 3600

WAN

Cisco 3640 Catalyst 5000

Catalyst 3000

Cisco 3640

Inter VLAN Routing

Using Cisco 3600 Series

VLAN

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