I agree. As a point of reference, we've only have defined two IGP algorithms so 
far and the segment routing draft dates back about 4 years. 

https://www.iana.org/assignments/igp-parameters/igp-parameters.xhtml#igp-algorithm-types

Even with more artistic freedom afforded to multicast,  I still believe 256 
standard algorithms are enough. 

Thanks,
Acee 

´╗┐On 2/14/18, 9:15 PM, "BIER on behalf of Dolganow, Andrew (Nokia - 
SG/Singapore)" <bier-boun...@ietf.org on behalf of andrew.dolga...@nokia.com> 
wrote:

    Guys,
    
    I would think 8 bits are sufficient. Others (like SegRtg mentioned below 
also use 8). 8 bits gives us tons of room to grow - especially since we have 
only a single value defined currently (SFP 0). If we have clear use cases that 
show us running out of 8 bits or getting close to that we can/should discuss 
and evaluate extensions in light of that but increasing the space "just in 
case" is not a prudent way to go.
    
    Andrew
    
    -----Original Message-----
    From: BIER <bier-boun...@ietf.org> on behalf of Xiejingrong 
<xiejingr...@huawei.com>
    Date: Wednesday, February 14, 2018 at 5:06 PM
    To: Arkadiy Gulko <arkadiy.gu...@thomsonreuters.com>, "b...@ietf.org" 
<b...@ietf.org>, "isis-wg@ietf.org" <isis-wg@ietf.org>
    Subject: Re: [Bier] WGLC : draft-ietf-bier-isis-extensions-07.txt
    
        Hi Arkadiy,
        
        I checked the latest <draft-ietf-ospf-segment-routing-extensions-24> 
and <draft-ietf-isis-segment-routing-extensions-15> for reference and 
comparing, and they both use a 8 bits Algorithm.
        One of the description: "Algorithm: Single octet identifying the 
algorithm."
        
        Interesting to use more than 8 bits for BIER's future flexibility :-)
        
        Regards,
        XieJingrong
        
        
        -----Original Message-----
        From: BIER [mailto:bier-boun...@ietf.org] On Behalf Of 
arkadiy.gu...@thomsonreuters.com
        Sent: Wednesday, February 14, 2018 8:42 AM
        To: b...@ietf.org; isis-wg@ietf.org
        Subject: [Bier] WGLC : draft-ietf-bier-isis-extensions-07.txt
        
        Hello Working Group,
        After initial discussions between multiple participants of the working 
group, we consolidated that BIER's future flexibility would be well served if 
we extend the IGP signaling BAR field to 16 bits. We are currently reviewing 
various use-cases that can greatly benefit from this enhancement.
        I would appreciate if the proposed change could be considered as part 
of IETF Last Call review.
        Thanks,
        Arkadiy
        
        
        -----Original Message-----
        From: BIER [mailto:bier-boun...@ietf.org] On Behalf Of 
internet-dra...@ietf.org
        Sent: Friday, February 09, 2018 5:11 PM
        To: i-d-annou...@ietf.org
        Cc: b...@ietf.org
        Subject: [Bier] I-D Action: draft-ietf-bier-isis-extensions-07.txt
        
        
        A New Internet-Draft is available from the on-line Internet-Drafts 
directories.
        This draft is a work item of the Bit Indexed Explicit Replication WG of 
the IETF.
        
                Title           : BIER support via ISIS
                Authors         : Les Ginsberg
                                  Tony Przygienda
                                  Sam Aldrin
                                  Jeffrey (Zhaohui) Zhang
                Filename        : draft-ietf-bier-isis-extensions-07.txt
                Pages           : 10
                Date            : 2018-02-09
        
        Abstract:
           Specification of an ISIS extension to support BIER domains and sub-
           domains.
        
        
        
        The IETF datatracker status page for this draft is:
        
https://urldefense.proofpoint.com/v2/url?u=https-3A__datatracker.ietf.org_doc_draft-2Dietf-2Dbier-2Disis-2Dextensions_&d=DwICAg&c=4ZIZThykDLcoWk-GVjSLmy8-1Cr1I4FWIvbLFebwKgY&r=JA6g2ZDvIPLQHZqHQByKQq-jvOcxu4cQskARppQFqZc&m=TOz3rr3No8ReKzE_27M4FMDvmv6fa9xveuyL5HyTvYs&s=3qPmQav_QUBjHi7KygPVk9bIhVZ7TL2Z3xfHOo_Cjwc&e=
 
        
        There are also htmlized versions available at:
        
https://urldefense.proofpoint.com/v2/url?u=https-3A__tools.ietf.org_html_draft-2Dietf-2Dbier-2Disis-2Dextensions-2D07&d=DwICAg&c=4ZIZThykDLcoWk-GVjSLmy8-1Cr1I4FWIvbLFebwKgY&r=JA6g2ZDvIPLQHZqHQByKQq-jvOcxu4cQskARppQFqZc&m=TOz3rr3No8ReKzE_27M4FMDvmv6fa9xveuyL5HyTvYs&s=_nTFvlAW24snrkMm3aQ2uWLFsLCajYeW4HO3DdEiwvs&e=
        
https://urldefense.proofpoint.com/v2/url?u=https-3A__datatracker.ietf.org_doc_html_draft-2Dietf-2Dbier-2Disis-2Dextensions-2D07&d=DwICAg&c=4ZIZThykDLcoWk-GVjSLmy8-1Cr1I4FWIvbLFebwKgY&r=JA6g2ZDvIPLQHZqHQByKQq-jvOcxu4cQskARppQFqZc&m=TOz3rr3No8ReKzE_27M4FMDvmv6fa9xveuyL5HyTvYs&s=zHWCGuyM-GSX-slbFtCv4fs9ml5gPQBeXohosuyhpx4&e=
 
        
        A diff from the previous version is available at:
        
https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ietf.org_rfcdiff-3Furl2-3Ddraft-2Dietf-2Dbier-2Disis-2Dextensions-2D07&d=DwICAg&c=4ZIZThykDLcoWk-GVjSLmy8-1Cr1I4FWIvbLFebwKgY&r=JA6g2ZDvIPLQHZqHQByKQq-jvOcxu4cQskARppQFqZc&m=TOz3rr3No8ReKzE_27M4FMDvmv6fa9xveuyL5HyTvYs&s=pDVWzZrYzGia4WKiA_cSF0P5isUmMeojSvHJIGgdOTk&e=
 
        
        
        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.
        
        Internet-Drafts are also available by anonymous FTP at:
        
https://urldefense.proofpoint.com/v2/url?u=ftp-3A__ftp.ietf.org_internet-2Ddrafts_&d=DwICAg&c=4ZIZThykDLcoWk-GVjSLmy8-1Cr1I4FWIvbLFebwKgY&r=JA6g2ZDvIPLQHZqHQByKQq-jvOcxu4cQskARppQFqZc&m=TOz3rr3No8ReKzE_27M4FMDvmv6fa9xveuyL5HyTvYs&s=wqMqmybm38ZiX4CuzJaNJPMea1Mf-pSgD-vdgAHk850&e=
 
        
        _______________________________________________
        BIER mailing list
        b...@ietf.org
        
https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ietf.org_mailman_listinfo_bier&d=DwICAg&c=4ZIZThykDLcoWk-GVjSLmy8-1Cr1I4FWIvbLFebwKgY&r=JA6g2ZDvIPLQHZqHQByKQq-jvOcxu4cQskARppQFqZc&m=TOz3rr3No8ReKzE_27M4FMDvmv6fa9xveuyL5HyTvYs&s=kxUz28mTxGjbNsEQMGi8SMZ93LSiMt_bMFzqkWJJZnU&e=
 
        
        _______________________________________________
        BIER mailing list
        b...@ietf.org
        https://www.ietf.org/mailman/listinfo/bier
        
        _______________________________________________
        BIER mailing list
        b...@ietf.org
        https://www.ietf.org/mailman/listinfo/bier
        
    
    _______________________________________________
    BIER mailing list
    b...@ietf.org
    https://www.ietf.org/mailman/listinfo/bier
    

_______________________________________________
Isis-wg mailing list
Isis-wg@ietf.org
https://www.ietf.org/mailman/listinfo/isis-wg

Reply via email to