Re: [bess] Last Call: <draft-ietf-bess-evpn-df-election-framework-06.txt> (Framework for EVPN Designated Forwarder Election Extensibility) to Proposed Standard

"Rabadan, Jorge (Nokia - US/Mountain View)" <jorge.rabadan@nokia.com> Wed, 19 December 2018 09:18 UTC

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From: "Rabadan, Jorge (Nokia - US/Mountain View)" <jorge.rabadan@nokia.com>
To: "Satya Mohanty (satyamoh)" <satyamoh@cisco.com>, Anoop Ghanwani <anoop@alumni.duke.edu>, "bess@ietf.org" <bess@ietf.org>
Thread-Topic: [bess] Last Call: <draft-ietf-bess-evpn-df-election-framework-06.txt> (Framework for EVPN Designated Forwarder Election Extensibility) to Proposed Standard
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Subject: Re: [bess] Last Call: <draft-ietf-bess-evpn-df-election-framework-06.txt> (Framework for EVPN Designated Forwarder Election Extensibility) to Proposed Standard
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Hi Anoop,

Thank you for your review. We took all your comments.
Please see in-line how we are resolving them in rev 07.

Thanks.
Jorge

-----Original Message-----
From: BESS <bess-bounces@ietf.org> on behalf of "Satya Mohanty (satyamoh)" <satyamoh@cisco.com>
Date: Friday, December 7, 2018 at 6:09 PM
To: Anoop Ghanwani <anoop@alumni.duke.edu>du>, "bess@ietf.org" <bess@ietf.org>
Subject: Re: [bess] Last Call: <draft-ietf-bess-evpn-df-election-framework-06.txt> (Framework for EVPN Designated Forwarder Election Extensibility) to Proposed Standard

    Hi Anoop,
    
    Thank you very much for your editorial comments and review.
    We will take care of it.
    
    Best,
    --Satya
    
    
    On 12/7/18, 1:01 AM, "BESS on behalf of Anoop Ghanwani" <bess-bounces@ietf.org on behalf of anoop@alumni.duke.edu> wrote:
    
        I have reviewed the doc and I have mostly editorial comments.
        
        Thanks,
        Anoop
        
        ==
        
        Throughout
        
        VLAN Bundle, VLAN bundle, VLAN-Bundle, VLAN-bundle -- make consistent
        VLAN Aware Bundle, VLAN-aware bundle, VLAN-Aware Bundle -- make consistent
        bridge table, Bridge Table -- make consistent (also add definition to
        terminology section)
        DF election, DF Election -- make consistent
        Default DF Election, default DF Election -- make consistent
        non-DF -> NDF
[JORGE] done, thx
        
        Section 1
        
        double Q-in-Q tags -> Q-in-Q tags
        
        double is redundant
[JORGE] done, thx
        
        Section 2.1
        
        Fig 1 is a bit confusing.  If the idea of the rectangle is to show a
        core, then why have connections between PE1 and PE2, PE3, but not
        between PE1 and PE4?
[JORGE] good point, fixed it, thx
        
        Change
        >>>
        Layer-2 devices are particularly susceptible to forwarding loops
        because of the broadcast nature of the Ethernet traffic.
        >>>
        to
        The effect of forwarding loops in a Layer-2 network is particularly
        severe because of the broadcast nature of Ethernet traffic and the
        lack of a TTL.
[JORGE] done, thanks.
        
        Section 2.2.1
        
        a v4 or v6 peering -> an IPv4 or IPv6 peering
[JORGE] done, thanks.
        
        >>>
        >From a forwarding perspective, this is
        a churn, as it results in re-programming the PE ports as either
        blocking or non-blocking at potentially all PEs when the DF changes.
        >>>
        
        Why would the reprogramming change at all PEs?  It should change for
        at most 2 PEs for each (ES,EVI) being reprogrammed.  Maybe authors
        were trying to convey something else?
[JORGE] changed to: 
***From a forwarding perspective, this is
   a churn, as it results in re-programming the PE ports as either
   blocking or non-blocking at the PEs where the DF state changes.***
        
        
        Section 2.3
        
        >>>
        DF Election procedure Generally
        >>>
        Missing a period.
[JORGE] done, thanks.
        
        
        Section 3
        
        specification in EVPN -> EVPN specification
[JORGE] done, thanks.
        
        
        Section 3.1
        
        DF WAIT, DF_WAIT -- make consistent
[JORGE] done, thanks.

        DF Wait timer -- where is this defined?
[JORGE] This is defined in [RFC7432]. I added a reference.

        Ethernet Segment Route -> Ethernet Segment route
        stop DF timer ->  stop DF wait timer (?)
        start DF timer -> start DF wait timer (?)
[JORGE] done, thanks.
        
        Section 4
        
        rather than the state of the server states -> rather than the state of
        the server (?)
[JORGE] done, thanks.
        
        Section 4.2
        
        Si is the IP address of server i -> Si is the IP address of PE i
[JORGE] done, thanks.

        operator chooses so -> operator so chooses
[JORGE] done, thanks.

        Note 0 <= i,j <= Number of PEs -- should this be "< Number of PEs"?
        Weight(V, Es, Sk) -> Weight(v, Es, Sk)
        Pseudo-random -> pseudo-random
        efficient deterministic -> efficient and deterministic
        V4 -> IPv4
        V6 -> IPv6
[JORGE] all of them changed. Thanks.
        
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