Transcript Piroska Giese “Key updates since September 1997” in Hungary KFKI-RMKI
ICFA Networking Task Force Workshop at CERN 23-25 March 1998 “Key updates since September 1997” in Hungary
Piroska Giese
KFKI-RMKI
European traffic
• Hungary has a 10 Mbps connection to TEN-34 since May 1997 • The available capacity for the
HUNG
arian
A
cademy and
R
esearch
NET
work (
HUNGARNET
) is 5 Mbps • The country-wide IP backbone is called
HBONE
HBONE geographical Topology
The country-wide Backbone HBONE
• the HBONE has a 30 Mbps ATM (PSV) core • most of the sites are connected via leased line with the speed of 64kbps - 1Mbps • the KFKI campus is connected via 2 Mbps microwave
HBONE regional nodes and links
Transatlantic traffic
• via EuropaNET up to June 1997 • via direct MCI connection from June to November 1997 with a speed of 800 kbps • via TEN-34 US link since November 1997 The available capacity for the Hungarian R&D network is
5 Mbps
Effect of the TEN-34 US link on the RMKI’s connectivity • Network monitoring is based on ICMP ping (
the RMKI is a data collection site
) • the average round trip delay and packet loss decreased to US sites • the packet loss increased to CERN and to European sites The problem is: The frequent break of the TEN-34 US link No backup is provided by DANTE
Period of Ping 15.10.1997 - 28.02.1998
The counted average value of the ping results
Traffic load control
• The MRTG is running since January 1997 • The external traffic from/to KFKI campus is public available http://www.kfki.hu/mrtg/kfki-cisco.kfki.hu.2.html
External traffic from/to Hungary
• The Budapest - Vienna link is more then 50% loaded • The overview of line’s load is seen on the TEN-34 Weather Map http://www.dante.net/operations/statistics/weathermap.html
TEN-34 Weather Map