Chabot College
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CISCO NETWORKING ACADEMY CISCO NETWORKING ACADEMY Chabot College Chabot College ELEC 99.05 ELEC 99.05 Managing Network Traffic by Design
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Chabot College. ELEC 99.05 Managing Network Traffic by Design. Utilization. Utilization means the % of network bandwidth being used. Ethernet performs badly when utilization exceeds 40%. Traffic Management. When LAN utilization is high Increase bandwidth. - PowerPoint PPT Presentation
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CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
Chabot CollegeChabot College
ELEC 99.05ELEC 99.05Managing Network Traffic by Design
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
UtilizationUtilization• Utilization means the % of network
bandwidth being used.• Ethernet performs badly when utilization
exceeds 40%.
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
Traffic ManagementTraffic Management• When LAN utilization is high
– Increase bandwidth.– Create smaller collision domains - segment
with switches– Create smaller broadcast domains - partition
LANs into smaller VLANs; cross-connect with routers.
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
BandwidthBandwidth• When designing bandwidth allocations
– Put bandwidth where it is needed:• High traffic servers• High traffic backbone links
– Use tiered bandwidth - a hierarchical approach.
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
Tiered BandwidthTiered Bandwidth• Bandwidth can be placed where it is
needed most:
Workgroup Switch
D E F G I
100
10 10 10 10 10
Workgroup Switch
J K L M N
100
10 10 10 10 10
300
CampusCore
Switch
BuildingSwitch
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
Network Design ExamplesNetwork Design Examples• 1620 Lab• Chabot Campus Network
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
1620 Lab Network1620 Lab Network
100
100
100100
10 Fiber
101010
Campus Core Router(Bld 300)
1620Server
Curriculum Workstations
100
HPPrinter
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
Chabot Campus Network
AdminNet
ISL
ISLISL
Internet to District Officeto LPC
Cacheflow
www.clpccd.cc.ca.us
Cisco 4500Cisco 7507
Cisco PIX
CiscoCatalyst
5000
CiscoCatalyst
5000 CiscoCatalyst
3000
CiscoCatalyst
5500
CiscoCatalyst
2924
CiscoCatalyst
2924
ClassroomHubs
FacultyOfficeHubs
InstructionalNet
library.clpccd.cc.ca.us
AdminOfficeHubs
Cla
ss-W
eb
Ban
ner
Gro
upW
ise
DMZ
CiscoCatalyst
1924
1620Lab
