Hi Peter,
Is it possible for a TI-LFA path, expressed as a native IP address list, to be
encoded in a Routing Header which is not necessarily Segment Routing Header, or
to be encoded in LSRR option defined in RFC791 ?
Regards,
PSF
原始邮件
发件人：PeterPsenak
收件人：Huzhibo;Acee Lindem (acee);lsr;
日 期 ：2020年12月09日 20:44
主 题 ：Re: [Lsr] WG Adoption Call for "IGP Flexible Algorithms (Flex-Algorithm)
In IP Networks" - draft-bonica-lsr-ip-flexalgo-01
Hi Zhibo,
On 09/12/2020 13:05, Huzhibo wrote:
> Hi Peter:
>
> If Ti-LFA can protect IP flexalgo, the native IP and SR must share the
> same algorithm ID.
that is correct.
thanks,
Peter
>
> thanks,
> Zhibo
>
> -----Original Message-----
> From: Peter Psenak [mailto:[email protected]]
> Sent: Wednesday, December 9, 2020 7:16 PM
> To: Huzhibo <[email protected]>; Acee Lindem (acee)
> <[email protected]>; lsr <[email protected]>
> Subject: Re: [Lsr] WG Adoption Call for "IGP Flexible Algorithms
> (Flex-Algorithm) In IP Networks" - draft-bonica-lsr-ip-flexalgo-01
>
> Zhibo,
>
> On 09/12/2020 11:50, Huzhibo wrote:
>> Hi authors,
>>
>> Here are some comments about IP flexalgo as follows:
>>
>> 1.In Flex-Algo draft, there is description about using fast-rerouting
>> with Flex-Algo for SR-MPLS and SRv6 data plane. It is recommended that
>> similar text be added for IP Flex-Algo.
>
> there is a similar text in section 8, but more work is required indeed.
>
> One important note - TI-LFA requires some form of traffic steering. This can
> be achieved by enabling both IP and SR flex-algo and use SR FA only to
> protect IP FA, similar to protection of "unlabeled" traffic with SR MPLS. Or
> some alternative mechanism for enforcing the traffic on the LFA path is
> required.
>
>>
>> 2.Is Application-Specific Link Attribute (ASLA) MUST be used for IP
>> Flex-Algo path computation?
>
> yes, the flex-algo application uses Flex-algo specific link attributes as
> defined in base flex-algo draft.
>
> thanks,
> Peter
>>
>> Best regards,
>>
>> Zhibo
>>
>> *From:*Lsr [mailto:[email protected]] *On Behalf Of *Acee Lindem
>> (acee)
>> *Sent:* Wednesday, December 2, 2020 5:13 AM
>> *To:* lsr <[email protected]>
>> *Subject:* [Lsr] WG Adoption Call for "IGP Flexible Algorithms
>> (Flex-Algorithm) In IP Networks" - draft-bonica-lsr-ip-flexalgo-01
>>
>> This IP Flex Algorithm draft generated quite a bit of discussion on
>> use cases and deployment prior to IETF 109 and there was generally
>> support for WG adoption. This begins a two week WG adoption call.
>> Please indicate your support or objection to WG adoption on this list
>> prior to
>> 12:00 AM UTC on December 16^th , 2020. Also, review comments are
>> certainly welcome.
>>
>> Thanks,
>>
>> Acee
>>
>
>
>
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