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:
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:
Design Queuing strategies to cope with the traffic mix mainly at Sligo
Using Access Control Lists (ACL’s) to segregate your different traffic classes
Using the ACL’s then create class maps to cope with the different traffic flows
Create policy maps to contain these class maps
Insert the policy maps at the relevant points on the network
Demonstrate where traffic policing will be implemented within the network
Show also where traffic shaping will take place on the network
Show how PPP multilink could be used and apply if necessary
Show how header compression can be used on the WAN link
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 random-detect ! interface serial 0/0/0 service-policy output WAN-Out !
Questions I have and would appreciate some help please are:
Am I correct to place the policy outbound on the Serial 0/0/0 interface of the Sligo router as this is where congestion will be encountered?
Is there any other config I need, i.e. packet shaping on Serial 0/0/0 interface, or anything config on the FastEthernet 0/0 inbound interface of the Sligo router?
What QoS information should be configured on the Dublin router?