Re: [spring] SRv6 And ICMP Processing
Ron Bonica <rbonica@juniper.net> Mon, 09 December 2019 22:45 UTC
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From: Ron Bonica <rbonica@juniper.net>
To: "Pablo Camarillo (pcamaril)" <pcamaril@cisco.com>, SPRING WG <spring@ietf.org>
Thread-Topic: [spring] SRv6 And ICMP Processing
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Date: Mon, 09 Dec 2019 22:44:57 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/ed2kb_2RMOTIkOo3kdk0rRSirCg>
Subject: Re: [spring] SRv6 And ICMP Processing
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Pablo,
Could you make this clear in the specification. Currently, Section 4.2 suggesst that processing is the same as Section 4.1 except for the following substitution:
"When N receives a packet destined to S and S is a local End.X SID, the line S15 from the End processing is replaced by the following:
S15. Set the packet's egress adjacency to J"
Ron
Juniper Business Use Only
From: Pablo Camarillo (pcamaril) <pcamaril@cisco.com>
Sent: Monday, December 9, 2019 10:17 AM
To: Ron Bonica <rbonica@juniper.net>; SPRING WG <spring@ietf.org>
Subject: Re: [spring] SRv6 And ICMP Processing
Ron,
In the example you listed the SRv6 implementation does not reply sending an ICMPv6 Parameter Problem message.
As you said, this would be a violation of RFC4443. I believe that RFC4443 is very clear about this.
Thanks,
Pablo.
From: spring <spring-bounces@ietf.org<mailto:spring-bounces@ietf.org>> on behalf of Ron Bonica <rbonica=40juniper.net@dmarc.ietf.org<mailto:rbonica=40juniper.net@dmarc.ietf.org>>
Date: Monday, 25 November 2019 at 20:22
To: SPRING WG <spring@ietf.org<mailto:spring@ietf.org>>
Subject: [spring] SRv6 And ICMP Processing
Pablo,
Assume that an SRv6 implementation receives the following packet:
- IPv6 Header
o Destination Address is a locally instantiated END.DX4 SID
o Next Header is ICMPv6
- ICMPv6 Header
o Type is Parameter Problem
Section 4.5 of draft-ietf-spring-srv6-network-programming-05 suggests that the implementation would respond by sending another ICMPv6 Parameter Problem message. This would violate RFC 4443, Section 2.4.e.
You might want to add some text to the draft stating compliance with the rules in Section 2.4 of RFC 4443.
ROn
Juniper Business Use Only
- [spring] SRv6 And ICMP Processing Ron Bonica
- Re: [spring] SRv6 And ICMP Processing Pablo Camarillo (pcamaril)
- Re: [spring] SRv6 And ICMP Processing Ron Bonica