FAQ FOR WLCG Network Throughput SUPPORT UNIT
Responsible Unit: WLCG Network Throughput
Helpdesk: GGUS (Operations Helpdesk by TPM)
What is the purpose of the WLCG Network Throughput Support?
This is a 2nd level support unit that helps to follow up and debug WLCG network performance issues (it uses and depends on OSG/WLCG perfSONAR infastructure).
For which components does WLCG Network Throughput provide support?
WLCG Networking (LHCOPN/LHCONE, R&E networks, GPN/WAN)
Which quality of service (QoS) will you provide?
Best effort
Who will assign tickets to WLCG Network Throughput Support?
Tickets can be assigned directly from either sites or experiments
Are tickets typically solved in WLCG Network Throughput Support or reassigned elsewhere?
Tickets are usually solved outside of the Unit. This unit is mainly established to get a coordinated response and to identify who "owns" the problem at a given stage.
Who is responsible for WLCG Network Throughput Support?
WLCG Network Throughput Team (T0/T1, R&E and experiments network contacts). This unit works in collaboration with GEANT's EDUPERT and GlobalNOC PET.
What documentation is available on WLCG Network Throughput Support?
https://twiki.cern.ch/twiki/bin/view/LCG/NetworkTransferMetrics#Network_Performance_Incidents
What is the usual "Type of Issue" for the tickets of WLCG Network Throughput?
Network, Network Performance, Network Throughput
Comments
The main motivation for this unit is to investigate network performance issues with assistance of the perfSONAR infrastructure. The focus is on performance issues and the primary objective is to confirm if a transfer problem observed is network related or not. If it's confirmed a Wide Area Network (WAN) issue then work with perfSONAR team to try to narrow it down to particular network link and thus help identify who is responsible for it.
What if I have questions which are not dealt with by this FAQ?
Open a GGUS ticket indicating that it should be directed at the WLCG Network Throughput team.