[bess] RFC 8395 on Extensions to BGP-Signaled Pseudowires to Support Flow-Aware Transport Labels

2018-06-26 Thread rfc-editor
A new Request for Comments is now available in online RFC libraries.


RFC 8395

Title:  Extensions to BGP-Signaled Pseudowires to 
Support Flow-Aware Transport Labels 
Author: K. Patel,
S. Boutros,
J. Liste,
B. Wen,
J. Rabadan
Status: Standards Track
Stream: IETF
Date:   June 2018
Mailbox:ke...@arrcus.com, 
sbout...@vmware.com, 
jli...@cisco.com,
bin_...@cable.comcast.com, 
jorge.raba...@nokia.com
Pages:  10
Characters: 17404
Updates:RFC 4761

I-D Tag:draft-ietf-bess-fat-pw-bgp-04.txt

URL:https://www.rfc-editor.org/info/rfc8395

DOI:10.17487/RFC8395

This document defines protocol extensions required to synchronize flow
label states among Provider Edges (PEs) when using the BGP-based
signaling procedures.  These protocol extensions are equally
applicable to point-to-point Layer 2 Virtual Private Networks
(L2VPNs).  This document updates RFC 4761 by defining new flags in the
Control Flags field of the Layer2 Info Extended Community.

This document is a product of the BGP Enabled Services Working Group of the 
IETF.

This is now a Proposed Standard.

STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements.  Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the 
standardization state and status of this protocol.  Distribution of this 
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Re: [bess] Slot requests for BESS WG session - IETF 102 - Montreal

2018-06-26 Thread Parag Jain (paragj)
Hi Stephane

I’ll like to request following slot:

draft-jain-bess-evpn-lsp-ping-07
Speaker: Parag Jain
Reason: WG adoption
Duration: 8 mins

Thanks
Parag

From: BESS  on behalf of "stephane.litkow...@orange.com" 

Date: Tuesday, June 12, 2018 at 3:13 AM
To: "bess@ietf.org" 
Subject: [bess] Slot requests for BESS WG session - IETF 102 - Montreal


All,



It is time we start building the BESS WG agenda for Montreal.



Please send us your request for a presentation slot, indicating draft name, 
speaker, and desired duration (covering presentation and discussion). If it is 
not the first presentation of the draft, please give a reason why it is 
required to have a new presentation slot.





Thank you



Stephane & Matthew




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[bess] Some comments on draft-ietf-bess-nsh-bgp-control-plane-03

2018-06-26 Thread Jiangyuanlong
Hi Adrian and co-authors,



I had a review of draft-ietf-bess-nsh-bgp-control-plane-03, thank you for this 
useful document and hope it can progress quickly.

In my opinion, this version still has some ambiguities which need to be cleaned 
up:

1.  In Section 3.1.1, it firstly says:" The SFI Pool Identifier is encoded 
as an 8 octet value as shown in Figure 4."  However, it then says in the end of 
this subsection: "The SFI Pool Identifier is a six octet, globally unique value 
encoded in network byte order." These two sentences are confusing.

The 1st occurrence of SFI Pool Identifier shall be fully spelled out as "SFI 
Pool Identifier extended community". Furthermore, "SPI Pool Identifier" in 
Figure 4 seems to be "SFI Pool Identifier" as there is no definition for the 
former term in the document. There are "SPI Pool Identifier" in other sections 
need to be consistent as well, such as "SPI Pool Identifier" in the last 
paragraph of Section 3.2.1.3.

2.  The definitions of "Service Function Type" in Figure 3 and Figure 9 are 
different and ambiguous. Maybe it can be simply defined as "The identifier for 
a type of service function".

3.  "SFIR-RD List" in Figure 9 may be replaced with "SFIR-RD/SFI pool ID 
list", as SFI pool ID is different from SFIR-RD and the list may consist of 
pure SFI pool IDs. One further note is, upon processing this variable, we need 
to distinguish RD Type and SFI Pool Identifier Type, the IANA will need to take 
care not to allocate 0x80XX for SFIR-RD Type.



Some minor editorial comments:

4.  "SFRIR-RD list" in Section 4.3 is misspelling.

5.  s/a packets/a packet/

6.  s/ach subtended/as subtended/



BTW, I think it is useful to support load balancing SFs across multiple SFFs as 
described in Section 5.5 of RFC 7665, this will enable a more flexible 
deployment of similar service functions in multiple sites across a network, 
such as in 5G transport.

In fact, Figure 11 in your draft already demonstrates that SF Type 41 has two 
instances attached to SFF1 and SFF2 respectively, I think another example can 
be added for load balancing across multiple SFFs, such as the following:

 --

| SFIa |

|SFT=42|

 --

  --  --   |

 | SFI  || SFI  |  -

 |SFT=41||SFT=42| |   SFF5  |

  --  --..|192.0.2.5|..

   \/ ..:  -  :..

  - .: :.-

   --|   SFF1  |--/  - |   SFF3  |

   -->|Class-|...|192.0.2.1||   SFF6  ||192.0.2.3|-->

   -->| ifier|- |192.0.2.6|:-

   --  -  |

   |--

 --| SFI  |

| SFIb |   |SFT=43|

|SFT=42|--

 --



My 2 cents,

B.R,

Yuanlong


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