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I trust everyone is keeping well during the current pandemic. I am working on a QoS design using Packet Tracer first and need a little guidance please.

This is the network design is:

LAB Screen Shot.PNG

The given design considerations are:

• Voice applications traffic, generated by voice-related applications (such as contact call centres)
• Mission-critical traffic, generated, for example, by database applications
• Transactional traffic, generated by e-commerce applications
• Routing update traffic from routing protocols such as Enhanced Interior Gateway Routing Protocol (EIGRP)
• Bulk transfer (such as file transfer or HTTP), considered best-effort traffic

The requirements are:

  1. Design Queuing strategies to cope with the traffic mix mainly at Sligo
  2. Using Access Control Lists (ACL’s) to segregate your different traffic classes
  3. Using the ACL’s then create class maps to cope with the different traffic flows
  4. Create policy maps to contain these class maps
  5. Insert the policy maps at the relevant points on the network
  6. Demonstrate where traffic policing will be implemented within the network
  7. Show also where traffic shaping will take place on the network
  8. Show how PPP multilink could be used and apply if necessary
  9. Show how header compression can be used on the WAN link
  10. Any other scenario which you may consider appropriate

I have created the ACLs based on TCP/UDP ports for the Voice, Video, Mission-Critical, Signalling, Transactional-Data and Bulk-Data. I have created the corresponding Class-Maps and Policy-Map (config attached) but the Policy-Map is: 

policy-map WAN-Out
class Routing
priority percent 3
set precedence 6
class Voice
priority percent 20
set precedence 5
class Video
Priority percent 10
set precedence 4
class Signalling
bandwidth percent 5
set precedence 3
class Mission-Critical-Data
bandwidth percent 10
set precedence 3
random-detect prec-based
class Transactional-Data
bandwidth percent 7
set precedence 2
random-detect prec-based
class Bulk-Data
bandwidth percent 4
set precedence 1
random-detect prec-based
class Class-Default
bandwidth percent 25
set precedence 0
interface serial 0/0/0
service-policy output WAN-Out
1 Comment
Gagandeep Kaur
Cisco Employee
Cisco Employee


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