Cisco WS-C3560-8PC-S Installation Guide - Page 50

Network Demands, Suggested Design Methods, Using the Hot Standby Redundancy Protocol HSRP - ip services

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Network Configuration Examples Chapter 1 Product Overview Table 1-9 Considerations for Increasing Network Performance Network Demands Suggested Design Methods • Too many users on a single network segment and a growing number of users accessing the Internet • Create smaller network segments so that fewer users share the bandwidth, and place the network resources in the same logical network as the users who access those resources most. • Use full-duplex operation between the switch and its connected workstations. • The increased power of new PCs, workstations, and servers • High demand from networked applications (such as e-mail with large attached files) and from bandwidth-intensive applications (such as multimedia) • Connect global resources-such as servers and routers to which network users require equal access-directly to the Fast Ethernet or Gigabit Ethernet switch ports so that they have their own Fast Ethernet or Gigabit Ethernet segment. • Use the Fast EtherChannel or Gigabit EtherChannel feature between the switch and its connected servers and routers. • An evolving demand for IP telephony • Use quality of service (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 802.1p/Q. You can connect the switch to other devices and create backup paths by using Fast Ethernet or gigabit links or Fast EtherChannel or Gigabit EtherChannel links. Using the Hot Standby Redundancy Protocol (HSRP), you can create backup paths between Catalyst 4908G-L3 switches. Figure 1-21 illustrates three configuration examples for using the Catalyst 3500 XL switches to create the following: • Cost-effective wiring closet-A cost-effective way to connect many users to the wiring closet is to connect up to nine Catalyst 3500 XL switches through GigaStack GBIC connections. When you use a stack of Catalyst 3548 XL switches, you can connect up to 432 users. To preserve connectivity between the switches in case one switch in the stack fails, connect the bottom switch to the top switch to create a GigaStack loopback. 1-26 Catalyst 3500 Series XL Hardware Installation Guide 78-6456-04

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Chapter 1
Product Overview
Network Configuration Examples
1-26
Catalyst 3500 Series XL Hardware Installation Guide
78-6456-04
You can connect the switch to other devices and create backup paths by using
Fast
Ethernet or gigabit links or Fast EtherChannel or Gigabit EtherChannel links.
Using the Hot Standby Redundancy Protocol (HSRP), you can create backup
paths between Catalyst 4908G-L3 switches. Figure 1-21 illustrates three
configuration examples for using the Catalyst 3500 XL switches to create the
following:
•
Cost-effective wiring closet—A cost-effective way to connect many users to
the wiring closet is to connect up to nine Catalyst 3500 XL switches through
GigaStack GBIC connections. When you use a stack of Catalyst 3548 XL
switches, you can connect up to 432 users. To preserve connectivity between
the switches in case one switch in the stack fails, connect the bottom switch
to the top switch to create a GigaStack loopback.
Table 1-9
Considerations for Increasing Network Performance
Network Demands
Suggested Design Methods
•
Too many users on a single
network segment and a growing
number of users accessing the
Internet
•
Create smaller network segments so that fewer users share
the bandwidth, and place the network resources in the same
logical network as the users who access those resources
most.
•
Use full-duplex operation between the switch and its
connected workstations.
•
The increased power of new PCs,
workstations, and servers
•
High demand from networked
applications (such as e-mail with
large attached files) and from
bandwidth-intensive applications
(such as multimedia)
•
Connect global resources—such as servers and routers to
which network users require equal access—directly to the
Fast Ethernet or Gigabit Ethernet switch ports so that they
have their own Fast Ethernet or Gigabit Ethernet segment.
•
Use the Fast EtherChannel or Gigabit EtherChannel feature
between the switch and its connected servers and routers.
•
An evolving demand for IP
telephony
•
Use quality of service (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
802.1p/Q.