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Topics Topics
- Why define a routing policy?
Why define a routing policy?
- How to define a policy
How to define a policy
- What to do with the policy now?
What to do with the policy now?
- Futures...
Using Routing Policies Using Routing Policies Mark Prior Mark - - PowerPoint PPT Presentation
Using Routing Policies Using Routing Policies Mark Prior Mark - - PowerPoint PPT Presentation
Using Routing Policies Using Routing Policies Mark Prior Mark Prior Core Engineering Group Core Engineering Group connect.com.au connect.com.au Topics Topics Why define a routing policy? Why define a routing policy? How to
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Why define a Routing Policy? Why define a Routing Policy?
- Documents relationship between BGP
Documents relationship between BGP peers peers
- Allows automatic generation of router
Allows automatic generation of router configurations configurations
- Provides a debugging aid to third parties
Provides a debugging aid to third parties
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How to define a Policy How to define a Policy
- Current de facto language in use is defined
Current de facto language in use is defined by RIPE-181 by RIPE-181
- Used by Internet Routing Registries
Used by Internet Routing Registries
- RADB, MCI, RIPE, ANS & CA*NET
RADB, MCI, RIPE, ANS & CA*NET
- Connect registers its policy at RADB (run
Connect registers its policy at RADB (run by Merit in the USA) by Merit in the USA)
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Aut Aut-
- Num
Num Object Object
- Routing Policy Description object
Routing Policy Description object
- Most important components are
Most important components are
- as-in
as-in
- as-out
as-out
- These define the incoming and outgoing
These define the incoming and outgoing external routing announcement external routing announcement relationships relationships
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Example Example
aut aut-
- num
num: AS2764 : AS2764 descr descr: connect.com.au : connect.com.au pty ltd pty ltd as-in: from as-in: from ASn ASn 5 accept 5 accept ASn ASn and <^ and <^ASn ASn+$> +$> as-out: to as-out: to ASn ASn announce AS2764 announce AS2764 as-out: to as-out: to ASn ASn announce AS-CONNECT and AS- announce AS-CONNECT and AS- CONNECTDOMESTIC CONNECTDOMESTIC mnt mnt-by: MAINT-AS2764
- by: MAINT-AS2764
changed: changed: mrp mrp@connect.com.au 980514 @connect.com.au 980514 source: RADB source: RADB
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Connect Connect’ ’s s Real Policy Real Policy
- RIPE-181 policy registered at
RIPE-181 policy registered at whois whois. .ra ra.net .net
- whois
whois -h
- h whois
whois. .ra ra.net AS2764 .net AS2764
- (Work in Progress) RPSL policy soon to
(Work in Progress) RPSL policy soon to appear at new RPSL server run by Merit at appear at new RPSL server run by Merit at compute.merit. compute.merit.edu edu
- To examine routes registered under an AS
To examine routes registered under an AS
- whois
whois -h
- h whois
whois. .ra ra.net !gAS2764 .net !gAS2764
- Note: This only works at RADB
Note: This only works at RADB
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What to do with the policy? What to do with the policy?
- Use it to generate router configurations
Use it to generate router configurations
- RtConfig
RtConfig, part of , part of RAToolSet RAToolSet from from USC/Information Sciences Institute USC/Information Sciences Institute
- Creates route and AS path filters. Can also
Creates route and AS path filters. Can also create ingress/egress filters. create ingress/egress filters.
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Things RIPE-181 can Things RIPE-181 can’ ’t do t do
- Perform special processing for communities
Perform special processing for communities
- Connect communities
Connect communities
- 2764:1, 2764:2, 2764:3, 2764:4, 2764:5
2764:1, 2764:2, 2764:3, 2764:4, 2764:5
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Futures Futures
- RPSL, new IETF defined standard
RPSL, new IETF defined standard
- More flexible than RIPE-181
More flexible than RIPE-181
- Connect will be migrating to RPSL over
Connect will be migrating to RPSL over next couple of months next couple of months
- Start to use our own server in place of
Start to use our own server in place of RADB (but will still register at RADB for RADB (but will still register at RADB for information) for configuration generation information) for configuration generation
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References References
- RIPE-181
RIPE-181
- ftp
ftp:// ://ftp ftp.ripe.net/ripe/docs/ripe-181. .ripe.net/ripe/docs/ripe-181.ps ps
- RPSL - RFC 2280
RPSL - RFC 2280
- ftp
ftp:// ://munnari munnari.oz.au/ .oz.au/rfc rfc/rfc2280.Z /rfc2280.Z
- RAToolSet
RAToolSet
- ftp
ftp:// ://ftp ftp. .isi isi. .edu edu/ /ra ra/ /RAToolSet RAToolSet
- RPS Working Group of the IETF
RPS Working Group of the IETF
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