Subject: [mpls] fwd: New Version Notification for draft-xu-mpls-in-udp-00.txt

From: Xuxiaohu <[email-masked]>
Date: Sat, 28 Apr 2012 02:54:00 +0000

Hi all,

Equal Cost Multi-Path (ECMP) and Link Aggregation Group (LAG) are widely used in the core of IP-enabled Packet Switch Networks (PSN) for load-balancing purposes. Most core routers (i.e., P routers) in the IP-enabled PSN are capable of load-balancing IP traffic flows across ECMP paths and/or LAG based on the hash of the five-tuple of   UDP/TCP packets (i.e., source IP address, destination IP address, source port, destination port, and protocol) or some fields in the IP header of non-UDP/TCP packets (e.g., source IP address, destination IP address). 

However, with existing IP-based encapsulation methods as defined in [RFC4023] such as MPLS-in-IP and MPLS-in-GRE, distinct customer traffic flows of various MPLS applications (e.g., MPLS-based L2VPN or L3VPN) between a given PE pair would be encapsulated with the same IP or GRE tunnel header prior to traversing the core. Since the encapsulating traffic is neither TCP nor UDP traffic, core routers could only perform hash calculation on the fields in the IP header of IP or GRE tunnels. As a result, core routers could not achieve an effective load-balancing for these traffic flows in the network due to the lack of adequate entropy information.

This document specifies one additional IP-based encapsulation technology for MPLS packets referred to as MPLS-in-UDP, which is intended to facilitate load-balancing the traffic of various MPLS applications such as MPLS-based L2VPN and L3VPN in the core of IP-enabled PSN.

Any comments are welcome.

Best regards,
Xiaohu

-----邮件原件-----
发件人: [email-masked] [mailto:[email-masked]] 
发送时间: 2012年4月28日 10:18
收件人: Xuxiaohu
抄送: Lucy yong; [email-masked]
主题: New Version Notification for draft-xu-mpls-in-udp-00.txt

A new version of I-D, draft-xu-mpls-in-udp-00.txt has been successfully submitted by Xiaohu Xu and posted to the IETF repository.

Filename:	 draft-xu-mpls-in-udp
Revision:	 00
Title:		 Encapsulating MPLS in UDP
Creation date:	 2012-04-28
WG ID:		 Individual Submission
Number of pages: 7

Abstract:
   This document specifies one additional IP-based encapsulation
   technology for MPLS packets referred to as MPLS-in-UDP, which is
   intended to facilitate load-balancing the traffic of various MPLS
   applications such as MPLS-based L2VPN and L3VPN in the core of IP-
   enabled packet switch networks.

The IETF Secretariat