Terena Networking Conference, Lisbon, May 2000 1 Slide 2 2 QoS
and HEAnet's Charging Model an administrative and technical
overview by Mike Norris, senior technical officer Slide 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 Slide 4
Terena Networking Conference, Lisbon, May 2000 4 Slide 5 5 Slide 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 Slide 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 Slide 8 Terena Networking
Conference, Lisbon, May 2000 8 Current model Entity charge Port
charge International charge (Subscription charges) Slide 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
Slide 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. Slide 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 Slide 12 Terena
Networking Conference, Lisbon, May 2000 12 Custom Queuing:
schematic Slide 13 Terena Networking Conference, Lisbon, May 2000
13 Slide 14 Terena Networking Conference, Lisbon, May 2000 14 but
not like this. Slide 15 Terena Networking Conference, Lisbon, May
2000 15 Custom Queuing: performance Slide 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 Slide 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 Slide 18 Terena Networking Conference, Lisbon, May 2000
18 CAR: performance Slide 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 Slide 20 Terena
Networking Conference, Lisbon, May 2000 20
