Re: [Idr] 答复: Working group last call for draft-ietf-idr-tunnel-encaps-04

Eric C Rosen <erosen@juniper.net> Mon, 29 May 2017 19:16 UTC

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To: Xuxiaohu <xuxiaohu@huawei.com>, "John G. Scudder" <jgs@juniper.net>, "idr@ietf.org" <idr@ietf.org>
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From: Eric C Rosen <erosen@juniper.net>
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Subject: Re: [Idr] 答复: Working group last call for draft-ietf-idr-tunnel-encaps-04
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On 5/24/2017 8:32 AM, Xuxiaohu wrote:
> Since the NVGRE header has a protocol field, it seems unnecessary to add the fake MAC header when encapsulating IP packets over NVGRE in the inter-subnet scenario, as described in (https://tools.ietf.org/html/draft-yong-l3vpn-nvgre-vxlan-encap-00#page-3).

The intention of section 3.2.3 (NVGRE) in the tunnel encaps draft is to 
provide the encapsulation information that is needed to form an NVGRE 
encapsulation as specified in RFC 7637.  If I'm understanding correctly, 
the draft cited above is an extension to or modification of RFC 7637, 
but was never adopted.  Am I wrong about that?