QoS seminar

1
Multicast in Funet

• Juha Oinonen
• Development Manager, Funet services
• first.lastname_at_csc.fi

2
Funet The Finnish University and Research
Network

• Funet customer organizations (total 85)
• universities (20)
• polytechnics (25)
• government research organizations (40)
• Total user base 250 000 (estimated 2002)
• Operated and developed by CSC

3
Funet Network Technologies

• Routers Juniper M20/M10 (total 19)
• some Cisco VXR/75xx/GSR for aggregation (phasing
  out)
• Backbone links
• SDH/WDM service (or fiber)
• 2.5Gbit/s PoS, GbE, 622Mbit/s Packet-over-Sonet
• external links (FICIX, International) at similar
  speeds
• Customer access
• Customers have and manage their own LAN/MAN
  routers
• link GbE or less, typical Fast Ethernet or OC-3
  ATM
• dark fiber where available/applicable, ATM
  service, other
• many providers

4
Multicast in Funet Backbone

• PIM v2
• customer access mainly PIMv1/v2, occasional DVMRP
• MSDP/MBGP, peers
• NORDUnet (upstream provider)
• FICIX no peers?
• RP topology single RP in backbone (back-up
  planned)
• couple of customers have their own RPs

5
Multicast Management Challenges

• Problems
• Network provider doesnt see traffic at
  application level!
• Content provider/end-user doesnt understand the
  technology
• Local (Campus) support in between
• Result End-to-end hard to monitor and debug
• understanding
• communication
• motivation

6
Multicast Monitoring Tools in Funet

• Multicast beacons
• status only, no statistics
• MRM statistics
• primitive multicast connectivity check
• quality check not too usable (Cisco packet loss)
• SDR monitoring
• mainly off-line statistics
• Places all over the world monitoring
• primitive international connectivity check

7
Multicast penetration and use

• Q1/2001 5..10 incoming international capacity
• equal to some 10-20Mbit/s at that time
• Q4/2002 snapshot less than 1Mbit/s multicast on
  external link
• different method for measuring
• one measurement only
• Nov 2002 33 of customer interfaces is multicast
  enabled
• of those actually used?
• and to what extent?

8
Applications

• Funet TV Eduskunta-kanava
• Finnish Parliament, YLE and CSC
• http//tv.funet.fi/ohjelmat/eduskunta/
• Kiasma beeoff
• http//www.kiasma.org/
• Video delivery
• group communications network ops, etc.
• Lectures
• Conference netcasting IETF, others

9
Future Challenges

• Everybody has his own multicast-like
  application-layer solution
• A standard method would be needed for bypassing
  non-multicast-enabled part of Internet
• would generate operational pressure to
  non-multicast-enabled parts of network to enable
  multicast
• relatively straightforward for a single-source
  type applications
• Broadcast video in Internet/LANs requires
  multicast
• see above
• IPv6 multicast effort?
• extra burden or making things right from the
  beginning?