Compendium 2005 - Traffic

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.

Traffic type	Total amount of traffic in 2004 in Terabytes
T3 (outbound external traffic)	6250.0
T4 (inbound external traffic)	6500.0
3.2 T1	13450.0
T2	7980.0
3.3Approximate percentage of T3 and T4 traffic to/from the Commercial Internet
T3 (outbound external traffic)	0.0%
T4 (inbound external traffic)	0.0%
3.4
Traffic type	Volume of traffic to/from the network in January 2005 (in Terabytes)
T3 (outbound external traffic)	1035.000
T4 (inbound external traffic)	680.000
T1	1414.000
T2	869.000

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

	Campus LAN	MAN or regional network	Access Network	NREN backbone	External Connections
% of institutions experiencing no or very little congestion	0.0	0.0	0.0	0.0	0.0
some or moderate	0.0	0.0	0.0	0.0	0.0
% of institutions experiencing serious congestion	0.0	0.0	0.0	0.0	0.0
total	0	0	0	0	0

3.6 Is the NREN aware of performance bottlenecks that are likely to be caused by multiple management domains? If so, examples of this:

IPv6

3.7Volume of IPv6 traffic to/from the network in January 2005 (in Terabytes)

T3 (outbound external traffic)	0.100 TB
T4 (inbound external traffic)	0.1 TB

3.8Best estimate of the percentage of total traffic that is currently IPv6 traffic	0.1 %
3.9Estimate of the increase of IPv6 traffic across the network in the next 1- 2 years	20.0 %

3.10Is the NREN funding or participating in IPv6-related activities other than providing IPv6 connectivity?

3.11Does the network support IPv6 multicasting, or does it have plans to do so?

No, not at the moment.

3.12IPv6 services the NREN supports

DNS, FTP, some SMTP

Remarks regarding this section

Unable to state commercial internet percentage (question 3.3), as a lot of that is done via NORDUnet transit and "invisible" to us. Best guess is that around 75% is commercial Internet traffic.