1. Terena Networking Conference, Lisbon, May 2000 1

2. 2 QoS and HEAnet's Charging Model an administrative and technical overview by Mike Norris, senior technical officer

3. Terena Networking Conference, Lisbon, May 2000 3 Overview Financial context Charging models Objectives of model Current model Implementing Quality of Service Conclusions and Strategies

4. Terena Networking Conference, Lisbon, May 2000 4

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6. 6 Charging models The number of FTE students Access capacity Access capacity and external traffic Fixed charge plus external capacity Fixed charge plus access capacity plus external capacity

7. Terena Networking Conference, Lisbon, May 2000 7 Objectives of Model Fair and equitable Predictable Levels of service Application of grants Effects of access upgrades Members can limit expenditure Encourage service enhancements

8. Terena Networking Conference, Lisbon, May 2000 8 Current model Entity charge Port charge International charge (Subscription charges)

9. Terena Networking Conference, Lisbon, May 2000 9 Cisco proprietary Full use of access bandwidth off-peak Applies only during contention Up to 15 separate queues Works on outbound packets Networks aggregated in queues Clients select level of service Custom Queuing: features

10. Terena Networking Conference, Lisbon, May 2000 10 Custom Queuing: implementation Assign IP addresses to access lists Map each access list to a queue access-list 107 permit ip any 136.206.0.0 0.0.255.255! DCU access-list 107 permit ip any 193.1.48.0 0.0.3.255! DCU access-list 107 permit ip any 147.252.0.0 0.0.255.255! DIT access-list 107 permit ip any 143.239.0.0 0.0.255.255! UCC queue-list 1 protocol ip 7 list 107 Thus, queue #7 is associated with access list 107, which permits traffic only to the institutions DCU, DIT and UCC.

11. Terena Networking Conference, Lisbon, May 2000 11 Custom Queuing: implementation Assign a size to each queue Depth of queue = (aggregate bandwidth in Kbps ) x 10 queue-list 1 queue 7 byte-count 30720 queue-list 1 queue 8 byte-count 61440 Apply CQ to inbound interface interface serial 2/0 custom-queue-list 7 custom-queue-list 8

12. Terena Networking Conference, Lisbon, May 2000 12 Custom Queuing: schematic

13. Terena Networking Conference, Lisbon, May 2000 13

14. Terena Networking Conference, Lisbon, May 2000 14 …but not like this.

15. Terena Networking Conference, Lisbon, May 2000 15 Custom Queuing: performance

16. Terena Networking Conference, Lisbon, May 2000 16 CAR: features Cisco proprietary Full use of access bandwidth off-peak Uses the ‘token bucket’ mechanism Up to 100 separate queues Works on outbound or inbound packets Institutions select level of service

17. Terena Networking Conference, Lisbon, May 2000 17 CAR: implementation Define access lists using member institutions’ IP addresses ! MAY (is the name of the institution) no access-list 184 access-list 184 permit ip any 149.157.0.0 0.0.255.255 time-range heanet-peak access-list 184 deny ip any any Define rate and burst limits for each access list and define actions interface ATM4/0.983 point-to-point description PVC to HEAnet rate-limit output access-group 184 384000 8000 8000 conform-action transmit exceed- action drop

18. Terena Networking Conference, Lisbon, May 2000 18 CAR: performance

19. Terena Networking Conference, Lisbon, May 2000 19 Conclusions In line with budgetary principles Management OK, reporting deficient Scalability and distribution to be tested DiffServ, CoS under MPLS to be studied Challenges of growth in demand, strategic connections, user base

20. Terena Networking Conference, Lisbon, May 2000 20