Ethernet-To-The-Factory Architecture - Cisco IE-3000-8TC Software Configuration Manual

Network Configuration Examples
Bandwidth alone is not the only consideration when designing your network. As your network traffic
profiles evolve, consider providing network services that can support applications for voice and data
integration, multimedia integration, application prioritization, and security.
network demands and how you can meet them.
Table 1-2 Providing Network Services
Network Demands
Efficient bandwidth usage for
multimedia applications and
guaranteed bandwidth for critical
applications
High demand on network redundancy
and availability to provide always on
mission-critical applications
An evolving demand for IP telephony
A growing demand for using existing
infrastructure to transport data and
voice from a home or office to the
Internet or an intranet at higher
speeds

Ethernet-to-the-Factory Architecture

This section is an overview of the Ethernet-to-the-Factory (EttF) architecture that provides network and
security services to the devices and applications in automation and control systems. It then integrates
those into the wider enterprise network.
EttF architecture applies to many types of manufacturing environments, but it must be tailored to the
industry type, the manufacturing type, and the production-facility size. Deployments can range from
small networks (less than 50 devices), to medium-sized networks (less than 200 devices), and to large
networks (up to and more than 1000 devices).
Within the EttF architecture are conceptual structures called zones that separate the various functions,
from the highest-level enterprise switches and processes to the smallest devices that control more
detailed processes and devices on the factory floor. See
For more information about EttF architecture, see this URL:
http://wwwin.cisco.com/enterprise/solutions/manufacturing/solutions/ettf.shtml
Cisco IE 3000 Switch Software Configuration Guide
1-14
Suggested Design Methods
Use IGMP snooping to efficiently forward multimedia and multicast traffic.
•
Use other QoS mechanisms such as packet classification, marking, scheduling,
•
and congestion avoidance to classify traffic with the appropriate priority level,
thereby providing maximum flexibility and support for mission-critical, unicast,
and multicast and multimedia applications.
• Use MVR to continuously send multicast streams in a multicast VLAN but to
isolate the streams from subscriber VLANs for bandwidth and security reasons.
• Use VLAN trunks and BackboneFast for traffic-load balancing on the uplink ports
so that the uplink port with a lower relative port cost is selected to carry the VLAN
traffic.
• Use QoS to prioritize applications such as IP telephony during congestion and to
help control both delay and jitter within the network.
Use switches that support at least two queues per port to prioritize voice and data
•
traffic as either high- or low-priority, based on IEEE 802.1p/Q. The switch
supports at least four queues per port.
Use voice VLAN IDs (VVIDs) to provide separate VLANs for voice traffic.
•
Use the Catalyst Long-Reach Ethernet (LRE) switches to provide up to 15 Mb of IP
connectivity over existing infrastructure, such as existing telephone lines.
LRE is the technology used in the Catalyst 2900 LRE XL and Catalyst 2950
Note
LRE switches. See the documentation sets specific to these switches for LRE
information.
Table 1-2
Figure 1-1.
Chapter 1 Overview
describes some
OL-13018-03