以VPLS連接TRILL雲端資料中心網路的邊界閘道器設計與實現

Interworking Gateway Device Design and Implementation for VPLS Interconnecting TRILL Data Center Networks

杜明憲(Ming-Sian Tu)

指導教授 ： 侯廷昭

國立中正大學/工學院/通訊工程學系/碩士(2015年)

摘要

新一代的資料中心面臨虛擬伺服器數量越來越多、服務虛擬化、虛擬機器的 移動性、管理等問題,資料中心採用傳統網路 LAN/WAN 設計遇到 VLAN 數 量不足、傳輸距離等挑戰。多鏈路透明互連(Transparent Interconnection of Lots of Links ,TRILL)是 IETF 提出,適用於雲端資料中心網路的一種第二層網路技術 架構。
本文提出讓遠端 TRILL 網路經由骨幹 VPLS 核心網路橋接的方法,並設計 與實作串接 TRILL 網路與 VPLS 核心網路的閘道裝置和基於 Quagga 的控制平 面架構,並且於 PC 環境下實現資料平面的功能。本文提出的方法為邊界閘道器 透過控制平面交換資料中心內路由橋接器的資訊,使邊界路由橋接器如同核心路 由橋接器般運作,讓 TRILL 服務能夠穿透 VPLS 網路,參與互連的 TRILL 網 路都擁有彼此的拓撲資訊,即兩端 TRILL 網路都能達到互通資訊的效果,兩端 網路都能了解彼此有哪些服務案例辨識成員。本論文提出方法讓整個 VPLS 與 TRILL 互連網路透過 TRILL 標頭外部乙太訊框的虛擬區域網路達到不同服務的 封包區隔、VPLS 核心網路中可以做多重路徑選擇、資料平面封包採用 Nickname 減少 MAC Address Scalability、增加虛擬機器移動性(VM Mobility)等服務。

關鍵字

虛擬機器移動性 ； 多鏈路透明互連 ； 邊界閘道器 ； 虛擬區域網路 ； 虛擬私有區域網路服務 ； 多路徑 ； 資料中心網路

並列摘要

In the new generation data centers, there are many issues to be solved. They include increasing number of servers, service virtualization, VM migration, and management. The data center network designed by traditional LAN/WAN has many challenges, e.g., trasmission distances, VLAN number limitation, etc. There is a new Layer 2 network technology, TRILL, published by IETF. The technology is suitable for the new generation data center networks.
To increase the geographical scope of data centers, we propose a method using VPLS to interconnec TRILL networks. In addition, we design and impliement the interworking gateway device. The gateway devices exhcange the RBridges' informations via the VPLS control protocol which is based on the Quagga architecture. It could make the PE device work as the core RBridege does and allow the TRILL service to pass through VPLS networks. Remote TRILL networks share RBridges' informations to have the whole topology. Besides, we used TRILL outer VLAN to differentiate tenants' flows. There are many advantages in our method, such as multipath in VPLS networks, QoS differentiation, MAC address scalability, and VM Mobility.

並列關鍵字

VM Mobility ； Gateway Device ； TRILL ； VLAN ； VPLS ； Data Center Networks ； Multipath

參考文獻

[4] R. Perlman, "Introduction to TRILL," The Internet Protocol Journal 4.3 (2011): 2-20.

[10] A. Amamou, K. Haddadou, and G. Pujolle, "A TRILL-based multi-tenant data center network," Computer Networks (2014).

[1] R. Perlman, B. Bhikkaji, B. V. Venkataswami, R. Mahadevan, S. Sundaram, N. P. Swamy, “Connecting Disparate TRILL-based Data Center/PBB/Campus sites using BGP”, draft-balaji-l2vpn-trill-over-ip-multi-level-03, Work in Progress, February 2013.

[2] A. Sajassi, A. Issac, N. Bitar, S. Aldrin, “TRILL-EVPN”, draft-ietf-l2vpn-trill-evpn-02, Work in Progress, October 2014.

[3] R. Perlman, D. Eastlake 3rd, D. Dutt, S. Gai, A. Ghanwani, "Routing Bridges (RBridges): Base Protocol Specification", IETF RFC 6325, July 2011.