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Implementation
• RFC2740 - OSPF for IPv6• A free, open source code from scratch
– about 17,000 lines in C
• A common platform : “Zebra”– Uses Zebra’s Library (tasking, timers, etc.)
– Portability (tested on *BSD)
– Configurable via Telnet
– Routing info can be exchanged with other protocols (RIPng, BGP4+)
Functionality
• Stability improved after IETF48• Supported
– OSPF Backbone (0.0.0.0) routing– Route exchange with other protocols
• Not yet supported– Area function– SNMP
• Full support before 2001/04
TokyoOtemachi
Fujisawa.Karigome
Kurasiki
Osaka
Nara
Kyoto
KomatsuFukuoka
Hiroshima
Sendai
Nezu
To:Losangels
Kyoto-u
Ritsumei-u
TDI
KARIN
JAIST
nui.org
NTT DoCoMo
KDD Lab
MCI
Titech
SONY
MGCS
NEC
KAMEOtemachi
Komatsu
Nara
KyotoHiroshimaOsaka
Sakyo
YDC KAME.NET
SESToshiba
Fujitsu Lab
nekomimi
Keio SFC
Keio ST
Fujitsu
Hiroshima-cuHiroshima-u
K-ISITNAISTSOUMpana.net
Nezu
TokyoLAX
U-Tokyo
IRI Nihon-uYokogawa KEK U-Aizu iSiD itojun.org
Hitachi
ISDN
ATMEther
T1128k64k
ForUS Kyushu-u
NTT SC
Fuji Xerox
3Si
ura
Fukuoka
UEC
Tunnel
Kyutech
Kurashiki
Sendai
Fujisawa
The testbed network
• 33 Routers currently running this system
• Maximum 13 hops
• Many Point-To-Point Links with ATM
• 9 Transit Broadcast Segments
• 170 LSAs (AS: 95, Area: 75)
• 143 routes (ASE: 93, Intra: 50)
• Default advertised from AS Border
Statistics
• Data gathering (duration): 72 hour
• CPU load– SPF frequency:
• maximum interval: 15 hours (at least)
• average interval: 13 minutes
– Time taken to run SPF• maximum: 66 mili-seconds
• average: 25 mili-seconds
Statistics(Link bandwidth)
• OSPFv3 (statistics)– Point-To-Point:
• 209bps (Tx: 104bps Rx: 105bps)
– Broadcast (DR, 3 neighbors):• 430bps (Tx: 212bps Rx: 218bps)
• RIPng (calculated)– 143 routes * 20 bytes * 8 (bits/byte) / 30 second
s• 762bps
TODOs to Full support
• Synchronization with BGP
• Area– Transit, Stub, NSSA, Virtual link
• SNMP(MIB)
• What else?
Let's try
• Available as a part of Zebra
• GPL2 copyrighted
• http://www.wide.ad.jp/
• http://www.zebra.org/
• Please use CVS version
