In this section, a distinction is made between different types of traffic by source or destination. Please refer to the figure below, which illustrates the distinctions in terminology.
T1 - all traffic from customer sites (outbound) T2 - all traffic to customer sites (inbound) T3 - all traffic to external network clouds T4 - all traffic to the NREN backbone External traffic = all traffic to GÉANT, the Commercial Internet, Internet exchanges, etc. (made up of T3 and T4 above)
3.1.Estimate of the total amount of traffic (in Terabytes) in 2004 of the types of traffic as defined in the picture above.
3.5Rough estimate of where there is congestion (if any) in the network and of the percentage of the total number of client institutions that are affected by congestion at this level
3.6 Is the NREN aware of performance bottlenecks that are likely to be caused by multiple management domains? If so, examples of this:
3.7Volume of IPv6 traffic to/from the network in January 2005 (in Terabytes)
3.10Is the NREN funding or participating in IPv6-related activities other than providing IPv6 connectivity?
We support IPv6 as a service. One of our engineers has been appointed to the government IPv6 task force. We support a SixXS PoP by providing the hardware, hosting and transit.
3.11Does the network support IPv6 multicasting, or does it have plans to do so?
No, but IPv6 multicast is under development at present, and planned for service later this year
3.12IPv6 services the NREN supports
Mirror, website, DNS, Mail, Listserv, News, video streaming, RIPE test traffic
Q3.5 The figures for congestion in campus LANs are very much guesstimates, as we have no direct observation of all such LANs. Q3.7 We don't have reliable figures at present for all IPv6 traffic values.