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Niels Raijer
presents
Dynamic routing on Inmarsat
interconnects
3
Contents
What is an APN?
Current APNs
Problems with traditional approach
Introducing dynamic routing
New APN layout
Technical and commercial advantages
Future APN developments
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Current APNs mvs.bgan.inmarsat.com (Burum/Amsterdam, majority of
customers)
mvsfr-usa.bgan.inmarsat.com (Burum/New York, one customer)
direct-usa.bgan.inmarsat.com (Burum/New York, no customers)
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Confused?
We’ll help you
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What is an APN?
Name for customers to choose in LaunchPad
Configured on Inmarsat GGSN, and “lives there”: Burum or Paumalu
Has pool of IP addresses
Traffic exchanged on interconnectPOP:Amsterdam or New York
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mvs APN
76.74.190.129direct-usa APN
mvsfr-usa APN mvs APN
195.3.166.23
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ProblemsRouting for US-based customers is not optimal(traffic schould not cross the Atlantic twice)
We fully depend on Burum GGSN now (not redundant!)
We depend on capacity of Inmarst’s network rather than our own
Redundant interconnects, but static routing
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Exchange routing information between routers
Routers tell each other: “If you have traffic for IPaddress a.b.c.d, send it to me.”
More versatile than static routing
Redundant in case of router or link failure (“Hey,can’t talk to router C any more -- I’ll delete all
routesI learnt from him.”)
Dynamic routing
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Example of BGP routing table
bganap-1.ams(M)-> get vrouter trust-vr route protocol bgpH: Host C: Connected S: Static A: Auto-ExportedI: Imported R: RIP P: Permanent D: Auto-DiscoverediB: IBGP eB: EBGP O: OSPF E1: OSPF external type 1E2: OSPF external type 2
Total 177/max entries
ID IP-Prefix Interface Gateway P Pref Mtr Vsys--------------------------------------------------------------------------------*1499 195.3.167.103/32 tun.1 172.26.172.1 eB 250 15 Root*1531 195.3.166.98/32 tun.1 172.26.172.1 eB 250 15 Root*1496 10.11.64.68/32 tun.1 172.26.172.1 eB 250 15 Root*1455 195.3.166.111/32 tun.1 172.26.172.1 eB 250 15 Root*1018 195.3.166.108/32 tun.1 172.26.172.1 eB 250 15 Root*1738 195.3.166.118/32 tun.1 172.26.172.1 eB 250 15 Root*1530 195.3.165.119/32 tun.1 172.26.172.1 eB 250 15 Root*1505 195.3.166.117/32 tun.1 172.26.172.1 eB 250 15 Root[...]*1674 10.11.16.226/32 tun.1 172.26.172.1 eB 250 15 Root*1639 195.3.166.147/32 tun.1 172.26.172.1 eB 250 15 Root*1543 195.3.166.154/32 tun.1 172.26.172.1 eB 250 15 Root
Total number of bgp routes: 97
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New APN layout
Two APNs called ‘mvs.bgan.inmarsat.com’: one in Burum, traffic delivered in Amsterdam; one in Paumalu, traffic delivered in New York
Dynamic routing to let Inmarsat tell us on what POP a customer is located
Inmarsat sends traffic to closest MVS POP
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mvs APN
195.3.166.23
mvs APN
76.74.190.129
BGP route: GGSN tells MVS router
‘195.3.166.23 is here’
BGP route: GGSN tells MVS router
‘76.74.190.129 is here’
195.3.166.23
195.3.166.23
BGP route: GGSN tells MVS router
‘195.3.166.23 is here now’
Global static IP address AND
Lowest possible latency AND
True, full redundancy
Global APN name AND
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Commercial advantages
APN developmentsmvsfr-usa.bgan.inmarsat.com is deleted
direct-usa.bgan.inmarsat.com is merged into
mvs.bgan.inmarsat.com
any new customer APNs will all be logical APNs
(old name: ‘ghost’ APN)
optimization of Internet connections to reduce
latency
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ЦТСAS
43666
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ЦТСAS 43666
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ConclusionMVS has a really sophisticated solution forrouting traffic with Inmarsat!
Unique: no other DP has this! Other DPs can doglobal APN or global IP or lowest latency, but notall three!
APN mvs.bgan.inmarsat.com willbe the true,redundant basis for new logical APNs
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Thank You!
skype: mvs.niels.raijer
Telephone: +31 6 549 18 205
Please contact Niels Raijer
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AnswersQuestions?
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ftp.bgan.ru/Presentations
ftp.marsat.ru/Presentations
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