Re: [OSPF] New Version Notification for draft-liang-ospf-flowspec-extensions-01.txt

"Acee Lindem (acee)" <acee@cisco.com> Wed, 08 October 2014 16:36 UTC

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From: "Acee Lindem (acee)" <acee@cisco.com>
To: "Peter Psenak (ppsenak)" <ppsenak@cisco.com>
Thread-Topic: [OSPF] New Version Notification for draft-liang-ospf-flowspec-extensions-01.txt
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Date: Wed, 8 Oct 2014 16:36:19 +0000
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Subject: Re: [OSPF] New Version Notification for draft-liang-ospf-flowspec-extensions-01.txt
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Hi Peter, et al, 
I’ve also seen many OSPF PE-CE deployments as well. One question is whether the CE is under the administrative control of the provider or the customer? 
Note that this was proposed at least once before - http://www.ietf.org/archive/id/draft-shrivastava-ospf-flow-spec-01.txt bit it didn’t gain momentum. 

With respect to Hannes’ comment, Les Ginsberg said he sees this as a candidate for the ISIS Generic Information instance (RFC 6823). We could do the same and push it to the OSPF transport instance which has also lost momentum as a draft. 

We’ve heard from one provider (Eric) who doesn’t think this is useful - any other input?  

One thing I hope is that no sees this a generic flow-spec distribution mechanism for SDN. The reason being that you really need per peer granularity of advertisement and policy, e.g. BGP. 

Thanks,
Acee 

On Oct 8, 2014, at 12:16 PM, Peter Psenak <ppsenak@cisco.com> wrote:

> Hi Eric,
> 
> there are definitely deployments using OSPF as PE-CE. It's typically used for enterprise customers, that use OSPF as their IGP and use L3 VPN service to interconnect their sites.
> 
> thanks,
> Peter
> 
> On 10/8/14 17:45 , Osborne, Eric wrote:
>> I'm not sure this has much value.  The vast majority of dynamic PE-CE is done with BGP; the little bit that isn't BGP is, in my experience, RIP.  I don't think I've seen many (any?) OSPF PE-CE deployments.
>> 
>> 
>> 
>> 
>> eric
>> 
>> -----Original Message-----
>> From: OSPF [mailto:ospf-bounces@ietf.org] On Behalf Of Youjianjie
>> Sent: Tuesday, October 07, 2014 10:11 PM
>> To: ospf@ietf.org
>> Subject: [OSPF] 转发: New Version Notification for draft-liang-ospf-flowspec-extensions-01.txt
>> 
>> Hi all,
>> 
>> This document discusses the use cases that OSPF is used to distribute FlowSpec routes. This document also defines a new OSPF FlowSpec Opaque Link State Advertisement (LSA) encoding format.
>> Your comments are appreciated.
>> 
>> Best Regards,
>> Jianjie
>> 
>> -----邮件原件-----
>> 发件人: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org]
>> 发送时间: 2014年9月28日 10:32
>> 收件人: Youjianjie; Youjianjie; liuweihang; liuweihang
>> 主题: New Version Notification for draft-liang-ospf-flowspec-extensions-01.txt
>> 
>> 
>> A new version of I-D, draft-liang-ospf-flowspec-extensions-01.txt
>> has been successfully submitted by Jianjie You and posted to the IETF repository.
>> 
>> Name:		draft-liang-ospf-flowspec-extensions
>> Revision:	01
>> Title:		OSPF Extensions for Flow Specification
>> Document date:	2014-09-27
>> Group:		Individual Submission
>> Pages:		11
>> URL:            http://www.ietf.org/internet-drafts/draft-liang-ospf-flowspec-extensions-01.txt
>> Status:         https://datatracker.ietf.org/doc/draft-liang-ospf-flowspec-extensions/
>> Htmlized:       http://tools.ietf.org/html/draft-liang-ospf-flowspec-extensions-01
>> Diff:           http://www.ietf.org/rfcdiff?url2=draft-liang-ospf-flowspec-extensions-01
>> 
>> Abstract:
>>    This document discusses the use cases why OSPF (Open Shortest Path
>>    First) distributing flow specification (FlowSpec) routes is
>>    necessary.  This document also defines a new OSPF FlowSpec Opaque
>>    Link State Advertisement (LSA) encoding format that can be used to
>>    distribute FlowSpec routes.
>> 
>>    For the network only deploying IGP (Interior Gateway Protocol) (e.g.
>>    OSPF), it is expected to extend IGP to distribute FlowSpec routes.
>>    One advantage is to mitigate the impacts of Denial-of-Service (DoS)
>>    attacks.
>> 
>> 
>> 
>> 
>> 
>> Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org.
>> 
>> The IETF Secretariat
>> 
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> 
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