operation tf. –operator tf – agenda udl operation udl 13mbps bandwidth extension ipv4 routing on...
TRANSCRIPT
Operation TF
まとめ• 発表の目的
– Operator TFの円滑な議事進行
• 議題、提案点その他– 次のスライドを参照願います
• 結論– アナウンス– スケジュールや手法、役割分担など具体的な実行計画を伴う合意
Agenda
• UDL Operation
• UDL 13Mbps bandwidth extension
• IPv4 Routing on UDL
• Other Routing Issues
• New network design in SFC
• Security
UDL Operation
Topics• Report
– UDL13Mbps extension and UDstation installation done– Keio establish maintenance contracet with UDcast for UDstation and UDbox– Backup UDstation and UDboxes will arrive soon
• Backup UDStation box– Coming Soon– TBD Later
• MTU 1500 on UDL– MTU 1452 on UDL should be legacy (SONY Feed problem)– TBD Later
• Issues on UDstation 13Mbps Performance– Configuration is 13Mbps but actual output by MRTG is around 10Mbps– TBD Later
• IPv4 routing on UDL– Install Private IPv4 for routing on the UDL (schedule and design)– TBD Later
Backup UDstation and UDbox
• Expected arrival date
• Direction of operation
• Expected topology including backup UDstation
MTU 1500 on UDL
• Current status– 1500 on sfc-udl-feed and ITB
• ospf6dでは ipv6 ospf6 mtu 1452
– 1452 on others– OSPFv2 with ITB is okay– OSPFv3 with all uses if mtu 1452 definition in ospf6d.conf
• AI3 Meeting後に Operator Meetingを開催して変更をします。– 各サイトの RRにて、 UDL I/FのMTUを 1500に変更します。– スケジュール未定– TSペイロード長を考慮したMTUを設定
Issues on UDStation 13Mbps Performance
UDStation 13Mbps Performance
• TCP tests on UDL:– Multiple wget sessions on SFC RO2:
• web server is sfc-cpu, output is /dev/null• MTU is 1500
• Output is around 10Mbps (less than smartbit results)
Comparing the ResultsTCP Throughput
0
2
4
6
8
10
12
1 2 3 4 5
Attempts
Thro
ughp
ut (M
bps)
udboxsonyboxiperf TCP results:
Around 11Mbps
Wget results:Around 10Mbps
MRTGSfc-udl-feed:bge1
Testing direction and announcement
• Do more tests to confirm– iperf vs wget– Smartbit UDP vs iperf UDP
• If wget or iperf is less than Smartbit:– Why?– Contact UDcast?
• Use tcpdump, then gets more accurate number
• UDL maybe blocked for testing
IPv4 routing on UDL
Routing for AIT and ITB
• BDL bandwidth changes due to UDL 13Mbps migration– SFC-ITB and SFC-AIT are 128kbps
• OSPFv2 is running on UDL• Neighbor: ITB, AIT should be neighbor, too.• Prefer routes via UDL than BDL
Install Private IPv4 for routing on the UDL
• Background
• Discussion
• Design
• Schedule
Other Routing Issues
SFC installed a Cisco Router
• SFC installed Cisco with 5 I/Fs
• Show current status and changes made in the routing /topology
Connection to WIDE Fujisawa NOC
AI3 switchWIDE switch
gsr1.fujisawa
sfc-gate
202.249.26.1142001:d30:101:4::2
202.249.26.1132001:d30:101:4::1
100-TXTaggedVLAN:31,49,140
foundry1S3/23
fa0/1
fa0/29
sfc-c7200
202.249.26.1152001:d30:101:4::3
1G-SXTaggedVLAN:31,49,140
Cisco 12000
202.249.26.1162001:d30:101:4::4
?
?
BGP backup BGP backupBGP MAIN
BGP MAIN
?
gi0/2
gi0/1 vlan 200gi0/2 vlan 140gi0/3 vlan 49fa5/0 vlan 31
M6bone
• Current status:– Tunnel with RENATER using sfc-c7200-gate– Failure on advertising AI3 prefix to RENATER
• Trouble shooting is on-going
• Next:– Move c7200 to AI3 rack– BGP peers Fujisawa cisco 12000– Push APAN-JP and TEIN2 to activate PIM-S
M and MBGP
FreeBSD-specific Issues
• Routing socket issue FreeBSD 4.10 ~– Kernel doesn’t inform all route deletes if too
many deletes in a small period• Ex: route flush
– Result: Zebra doesn’t reinstall all routes deleted by, e.g., route flush
• Husni patched zebra code– Already run on some routers in AI3– Should let others know
Multicast Routing: XORP Issues
• SOI Asia is using XORP 1.1– Some bugs. E.g.: doesn’t update MRIB if ther
e are changes in kernel
• Should upgrade to XORP 1.3 + patches– Unpatched XORP 1.3 has next-hop interface
problem in MRIB
AI3 SFC NetworkMiddle-term Design
Todos for preparation
• Show the final topology
• Show the intermediate topology for the near future (Change topology with current cisco) and discuss routing and addressing
sfc-ro1-gate
sfc-ro2-gate
sfc-udbox sfc-udbox2
C-band BDLs
C-band BDLs
sfc-bridge
WIDEWIDENSPIXP6NSPIXP6APANAPAN
NAISTNAIST
sfc-gate sfc-gate2
Sfc-udl-feed
Generic Requirement
• Less operational cost and more stability– Integrate some PC routers to Cisco routers– Distinguish challenge and stable operation (ex. sfc-udl
-feed)
• Capability of fiber optic connections in backbone• Redundancy against hardware troubles
– Backup for core routers– Backup for UDstation
• Interoperability between challenge and stabile operation IPv6 deployment
Less operational cost and more stability
• Integrate some PC routers to Cisco routers– Decrease the risk for hardware trouble
• Trials with PC router like sfc-udl-feedv.s backup using Cisco router– Need to clear out the minimum interoperability
between challenge and stable operation
Capability of fiber optic connections in backbone
• For the future operation, routers and switches connecting to the backbone may need gigabit Ethernet interface
Redundancy against hardware troubles
• Duplicate some important routing entities– sfc-gate– sfc-udl-feed– sfc-sat– sfc-udstation
IPv6 deployment
• Server upgrade– WEB Cache– DNS– SOI-Asia applications?
• Routing in the UDL network– IPv6 for all SOI-Asia partners– Private IPv4 for a part of partners
• BDL partners
• IPv6-only connection for new RO sites
Security
– Unsrat Open Proxy– Show and confirm the ai3 security policy