Re: [OSPF] Fw: Four L1VPN working group last calls

Hi Anton,

Last call deadline is only the deadline. Your comments are well within.

Yes, as Lou says, I noted that the L should apply only to the V for harmony 
with OSPF.
I completely missed the LTV/TLV thing. Good catch!

Adrian
----- Original Message ----- 
From: "Lou Berger" <lberger@labn.net>
To: "Anton Smirnov" <asmirnov@cisco.com>
Cc: "Adrian Farrel" <adrian@olddog.co.uk>; <ospf@ietf.org>; <l1vpn@ietf.org>
Sent: Thursday, October 11, 2007 4:39 PM
Subject: Re: [OSPF] Fw: Four L1VPN working group last calls

> Anton,
>         I believe someone else made a similar comment (perhaps Adrian?). 
> I agree that the T&L definition should be aligned with the common T&L 
> definition. (i.e., Type then length & length only covers size of V.)
>
> Lou
>
> At 11:16 AM 10/11/2007, Anton Smirnov wrote:
>
>>    Hi Adrian, all,
>>    I know it is damn close to last call deadline but I wanted to question 
>> format of data propagated via OSPF in
>>
>>http://www.ietf.org/internet-drafts/draft-ietf-l1vpn-ospf-auto-discovery-03.txt
>>
>>Format of TLVs propagated via L1VPN LSA proposed as:
>>
>>-----
>>3.2. L1VPN INFO TLV
>>
>>    The following TLV is introduced:
>>
>>    Name: L1VPN IPv4 Info
>>    Type: 1
>>    Length: Variable
>>
>>     0                   1                   2                   3
>>     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
>>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>    |         L1VPN TLV length      |           L1VPN TLV Type      |
>>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>...
>>
>>    TLV length
>>       The length of the TLV in bytes, including the 4 bytes of
>>       the TLV header.
>>-----
>>
>>So here length comes before TLV type (so strictly speaking it should be 
>>called LTV throughout the document) and length includes TLV header.
>>Just about every TLV so far standardized to be propagated via OSPF has 
>>Type field coming first and length covering only value field (see TLV 
>>definitions in TE, GR, RCAP, LLS, tags and whatsnot). Wouldn't it be 
>>prudent to avoid divergence and make implementator's life slightly easier 
>>to follow the suit? OSPF is used here merely as a transport protocol for 
>>L1VPN discovery values so it is better if definition of service fields is 
>>more friendly toward existing OSPF practices.
>>
>>    Thanks,
>>
>>Anton
>>
>>
>>
>>Adrian Farrel wrote:
>>>Hi OSPF working group,
>>>The L1VPN working group is holding a last call on several drafts. One of 
>>>them uses OSPF to advertise L1VPN membership.
>>>This I-D has previously been presented to the OSPF working group and some 
>>>feedback has been incorporated. We would welcome any further thoughts 
>>>during the last call. By preference, please send comments to the L1VPN 
>>>list, but anything sent to the OSPF list will be forwarded.
>>>Thanks,
>>>Adrian
>>>----- Original Message ----- From: "Adrian Farrel" <adrian@olddog.co.uk>
>>>To: <l1vpn@ietf.org>
>>>Sent: Thursday, September 27, 2007 8:17 PM
>>>Subject: [L1vpn] Four working group last calls
>>>
>>>>Hi,
>>>>
>>>>Now that there is a bit of peace and quiet on the CCAMP last calls, we 
>>>>would like to hold L1VPN last calls on four I-Ds:
>>>>
>>>>http://www.ietf.org/internet-drafts/draft-ietf-l1vpn-applicability-basic-mode-02.txt
>>>>http://www.ietf.org/internet-drafts/draft-ietf-l1vpn-basic-mode-02.txt
>>>>http://www.ietf.org/internet-drafts/draft-ietf-l1vpn-bgp-auto-discovery-02.txt
>>>>http://www.ietf.org/internet-drafts/draft-ietf-l1vpn-ospf-auto-discovery-03.txt
>>>>
>>>>Since there are four drafts, we will make this a three week last call. 
>>>>It will complete at 12 noon GMT on 18th October 2007.
>>>>
>>>>We will be notifying the IDR, OSPF, and CCAMP working groups about this 
>>>>last call.
>>>>
>>>>Thanks,
>>>>Adrian, Hamid, and Tomonori
>>>
>>>_______________________________________________
>>>OSPF mailing list
>>>OSPF@ietf.org
>>>https://www1.ietf.org/mailman/listinfo/ospf
>>
>>_______________________________________________
>>OSPF mailing list
>>OSPF@ietf.org
>>https://www1.ietf.org/mailman/listinfo/ospf
>>
>>
>
> 

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