draft-ietf-ippm-multipoint-alt-mark-08.txt   draft-ietf-ippm-multipoint-alt-mark-09.txt 
IPPM Working Group G. Fioccola, Ed. IPPM Working Group G. Fioccola, Ed.
Internet-Draft Huawei Technologies Internet-Draft Huawei Technologies
Intended status: Experimental M. Cociglio Intended status: Experimental M. Cociglio
Expires: September 18, 2020 Telecom Italia Expires: September 24, 2020 Telecom Italia
A. Sapio A. Sapio
R. Sisto R. Sisto
Politecnico di Torino Politecnico di Torino
March 17, 2020 March 23, 2020
Multipoint Alternate Marking method for passive and hybrid performance Multipoint Alternate Marking method for passive and hybrid performance
monitoring monitoring
draft-ietf-ippm-multipoint-alt-mark-08 draft-ietf-ippm-multipoint-alt-mark-09
Abstract Abstract
The Alternate Marking method, as presented in RFC 8321, can be The Alternate Marking method, as presented in RFC 8321, can be
applied only to point-to-point flows because it assumes that all the applied only to point-to-point flows because it assumes that all the
packets of the flow measured on one node are measured again by a packets of the flow measured on one node are measured again by a
single second node. This document generalizes and expands this single second node. This document generalizes and expands this
methodology to measure any kind of unicast flows, whose packets can methodology to measure any kind of unicast flows, whose packets can
follow several different paths in the network, in wider terms a follow several different paths in the network, in wider terms a
multipoint-to-multipoint network. For this reason the technique here multipoint-to-multipoint network. For this reason the technique here
skipping to change at page 1, line 42 skipping to change at page 1, line 42
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
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and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on September 18, 2020. This Internet-Draft will expire on September 24, 2020.
Copyright Notice Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the Copyright (c) 2020 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
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publication of this document. Please review these documents publication of this document. Please review these documents
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particular we can underline that Group 2 and Group 3 connect particular we can underline that Group 2 and Group 3 connect
together, since R5 is in common): together, since R5 is in common):
1. Cluster 1: (R1-R2), (R1-R3), (R1-R10) 1. Cluster 1: (R1-R2), (R1-R3), (R1-R10)
2. Cluster 2: (R2-R4), (R2-R5), (R3-R5), (R3-R9) 2. Cluster 2: (R2-R4), (R2-R5), (R3-R5), (R3-R9)
3. Cluster 3: (R4-R6), (R4-R7) 3. Cluster 3: (R4-R6), (R4-R7)
4. Cluster 4: (R5-R8) 4. Cluster 4: (R5-R8)
The flow direction here considered is from left to right. For the
opposite direction the same way of reasoning can be applied and, in
this example, you get the same Clusters partition.
In the end the following 4 Clusters are obtained: In the end the following 4 Clusters are obtained:
Cluster 1 Cluster 1
+------+ +------+
<> R2 <>--- <> R2 <>---
/ +------+ / +------+
/ /
+------+ / +------+ +------+ / +------+
---<> R1 <>---<> R3 <>--- ---<> R1 <>---<> R3 <>---
+------+ \ +------+ +------+ \ +------+
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