Cisco Systems NME-16ES-1G manual Network Demands Suggested Design Methods

Cisco EtherSwitch Service Modules Feature Guide

Network Configuration Examples

Table 5	Increasing Network Performance
Network Demands		Suggested Design Methods
Too many users on a single network		• Create smaller network segments so that fewer users share the bandwidth, and use
segment and a growing number of		VLANs and IP subnets to place the network resources in the same logical network
users accessing the Internet		as the users who access those resources most.
		• Use full-duplex operation between the internal interface and its connected
		workstations.
• Increased power of new PCs,		• Connect global resources—such as servers and routers to which the network users
workstations, and servers		require equal access—directly to the high-speed internal interface ports so that
• High bandwidth demand from		they have their own high-speed segment.
networked applications (such as		• Use the EtherChannel feature between the internal interface and its connected
e-mail with large attached files)		servers and routers.
and from bandwidth-intensive
applications (such as
multimedia)
	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. Table 6 describes some
	network demands and how you can meet them.
Table 6	Providing Network Services
Network Demands		Suggested Design Methods
Efficient bandwidth usage for		• Use IGMP snooping to efficiently forward multimedia and multicast traffic.
multimedia applications and		• Use other QoS mechanisms such as packet classification, marking, scheduling,
guaranteed bandwidth for critical
		and congestion avoidance to classify traffic with the appropriate priority level,
applications
		thereby providing maximum flexibility and support for mission-critical, unicast,
		and multicast and multimedia applications.
		• Use optional IP multicast routing to design networks better suited for multicast
		traffic.
		• Use Multicast VLAN Registration (MVR) to continuously send multicast streams
		in a multicast VLAN but to isolate the streams from subscriber VLANs for
		bandwidth and security reasons.

Cisco IOS Release 12.2(25)SEC

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