Abha Ahuja

1
Internet Routing Registries

• Abha Ahuja
• ahuja_at_merit.edu

2
What is the Routing Registry?

• Distributed database collectively known as
  Internet Routing Registry (IRR)
• RADB, RIPE, CW, ANS, Canet
• Providers register routing policy
• Used for planning, debugging and generating
  backbone router configs
• http//www.radb.net/

3
What is the Routing Registry?

• Can be used by anyone worldwide
• debugging
• configuring
• engineering routing
• addressing

4
What is the Routing Registry?

• contact names, email addresses and telephone
  numbers for an AS
• routing policy for an AS (what other ASes does it
  connect to, which routes do they exchange)
• information about routes (most important is which
  AS originates the route)
• several other types of information

5
What happens if I dont use a database?

• Routing Horror Stories
• AS7007
• filtering would have prevented this
• announcing bogus routes

6
So, I need to use the database because..

• Filters generated off the IRR protect against
  inaccurate routing information
• Makes troubleshooting and debugging easier
• Keep track of policy
• Security
• Filter! Filter! Filter!!

7
Why Bother with all of this?

• View of global routing policy in a single
  cooperatively maintained database
• to improve integrity of Internets routing
• generate router configs
• protect against inaccurate routing info
  distribution
• verification of Internet routing

8
Why Bother using the database (con)

• Many providers require that you register your
  policy
• peering
• customer relationship
• Route Servers

9
What is Internet2 going to do?

• Merit is setting up a database for I2 community
• source I2
• register Internet2 routing policy and information
• Will be RPSL
• Up by end of July

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Policy Languages

• express policy with aut-num objects, route
  objects, AS-MACROS
• currently RIPE-181
• moving to RPSL
• more policy control

11
What is RPSL?

• Routing Policy Specification Language
• Designed to replace current language (RIPE-181)
• Enhanced and more generalized

12
How does the language work?

• Object-oriented
• Express policy in objects
• person
• mntner
• role
• aut-num
• route
• Can make sets of objects

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Describing Policy

• Use the language to describe your relationship
  with other Peers
• routes importing
• routes exporting
• specific policies
• interfaces, MEDs, communities

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Querying the Database

• whois -h whois.radb.net AS237
• whois -h whois.radb.net MAINT-AS237
• whois -h whois.radb.net 198.108.60.0

15
How to Register your IRR policy

• Register one or more maintainers
• Register AS and policy information
• Register Routes
• Describes your import and export policy
• At the very least, provides contact information

16
Register your maintainer
mntner MAINT-AS237 descr Maintainer
for AS 237 admin-c Abha Ahuja upd-to
ahuja_at_merit.edu mnt-nfy ahuja_at_merit.edu mnt-b
y MAINT-AS237 auth MAIL-FROM
ahuja_at_merit.edu changed ahuja_at_merit.edu
941219 source RADB
17
Register your Routes
route 35.0.0.0/8 descr Merit
Network, Inc. descr University of
Michigan descr 4251 Plymouth Road, Suite
C descr Ann Arbor descr MI
48105-2785, USA origin AS237 mnt-by
MAINT-AS237 changed ahuja_at_merit.edu
931113 source RADB
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Register your aut-num

• Describe your policy!
• Peering relationships
• import-from
• export-to
• can use AS-sets

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Register your aut-num (con)
aut-num AS237 as-name
MICHNET-ASN descr MichNet Primary
AS descr Merit Network Inc. descr
Ann Arbor, MI USA as-in AS3561
accept ANY as-out AS3561 announce
AS237 admin-c JMD24 tech-c
JMD24 notify MCI-notify_at_merit.edu mnt-by
MERIT-MAINT-MCI changed
sobo_at_merit.edu 980202 source CW
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Register your aut-num (con)
as-set AS237AS-CUSTOMERS descr
ASs for which MichNet provides descr transit
service members AS229,AS237,AS238,AS7016,AS
10330 tech-c MichNet NOC admin-c
MichNet NOC remark transit ASs of
MichNet notify routing-notify_at_merit.edu mn
t-by MAINT-AS237 changed
ahuja_at_merit.edu 990222 source RADB
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Router Configuration

• Currently configs by hand - slow and inaccurate
• Configuring routers using the IRR
• lots of tools available!!!
• RtConfig by ISI
• route and Aspath filters.
• Import and export
• Filtering is a good thing...

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Router Configuration

• Currently configs by hand - slow and inaccurate
• Configuring routers using the IRR
• lots of tools available!!!
• Filtering is a good thing...
• Plans for some routers to support RPSL directly

23
Router Configuration
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How do I use the IRR to generate configs?

• Tools available to generate config files
• gated
• rsd
• Cisco
• RAToolSet
• http//www.isi.edu/ra/RAToolSet
• RtConfig
• Aoe, Roe

25
What does the RADB support now?

• RIPE181 whois queries, flags, objects
• RPSL whois queries, flags, objects
• Complete support for RAToolSet queries (fast!)
• Cisco configuration and management interface
• Complete automated mirroring support

26
How do I participate?

• Register your policy
• Run IRRd locally
• local copy of db for configs
• http//www.irrd.net

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Resources

• http//www.radb.net
• http//www.irrd.net
• http//www.isi.edu/ra/rps
• http//www.isi.edu/ra/RAToolSet
• http//www.ietf.org/html.charters/rps-charter.html
  
• http//www.rsng.net
• http//www.ripe.net

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Specifics

• Register your policy in the RADB
• Merit can assist (db-admin_at_radb.net)
• Questions? Need help?
• irrd-support_at_merit.edu
• db-admin_at_radb.net