Niels Raijer

presents

Dynamic routing on Inmarsat

interconnects

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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!

niels@themvsgroup.com

skype: mvs.niels.raijer

Telephone: +31 6 549 18 205

Please contact Niels Raijer

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AnswersQuestions?

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