High-performance Network Accommodation and Intra-slice Switching

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High-performance Network Accommodation and Intra-slice Switching

Using a Type of Virtualization Node

Yasusi Kanada & Kei Shiraishi, Hitachi, Ltd.

Akihiro Nakao, University of Tokyo

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IARIA Infocomp 2012 2012-10-24 Yasusi Kanada, Hitachi Ltd.

Introduction

▶ We developed a network-virtualization architecture and platform in a collaboration project.

▶ Multiple slices can be created on one physical network in this architecture and platform.

◆ Slices means virtual networks.

2

Virtualization platform

VNode VNode

VNode

Slice 3 Slice 2

Slice 1

Domain Controller

Slice developer Slice definition

<?xml ...>

...

A type of SDN

(Software defined network)

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Introduction (cont’d)

▶ Two issues to be solved

◆ To connect a slice and an external network with high-performance.

▪ A slice is something like a closed virtual world, but external connection is important for networking.

◆ To utilize high-performance hardware function (such as Ethernet switching) of VNode on a slice.

▪ A slice is isolated even from the platform.

▶ These issues are solved by introducing a new type of node called NACE (Network ACcommodation Equipment).

VNode VNode

VNode

Slice 3 Slice 2

Slice 1 Connection

External network

Utilizing

Hardware Functions

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VNode

▶ VNode (virtualization node) is a component of the network virtualization platform.

◆ VNode is a physical node.

◆ VNode forwards packets on the platform as a router.

◆ Slices are implemented as overlay networks on the virtualization platform.

◆ VNodes are connected by tunnels using GRE/IP.

▪ GRE (Generic Routing Encapsulation) is a protocol standardized by IETF.

4

Gate-

3

way Gate-

way User’s

PC/VM User’s

PC/VM

DC

VNode

VNode VNode

IP

Router VNode

DC: Domain Controller

Virtualization platform (IP network)

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Components of VNode

▶ Programmer

◆ is a programmable component that processes packets on the slices.

▶ Redirector

◆ forwards (redirects) packets from another VNode to a programmer and forwards packets from a

programmer to another VNode.

◆ is a component that can forward or route packets on the platform.

▶ VNode Manager

◆ is a software component that manages the VNode.

VNode Manager

Programmer

Redirector

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NACE and challenges

▶ We developed NACE (Network ACcommodation Equipment) to solve the two issues.

▶ Two challenges

◆High-performance gateway function between internal and external data representation.

◆Utilizing high-performance Ethernet switching function of NACE hardware.

6

External

network ^NACE

〜 10 Gbps

NACE Ethernet

switch

Slice

Virtual switch

〜 10 Gbps

Gateway

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Structure of NACE

▶ NACE is a remodeled version of VNode.

◆consists of VNM, Redirector, and Pseudo programmer manager.

Redirector

Redirector body (RB) Service module card (SMC) Control plane (C-Plane)

Data plane (D-plane) Internal data plane

Pseudo programmer manager

Redirector manager (RM) VNode manager (VNM)

High-end Ethernet switch

Network processor card

Dummy component

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NACE as Gateway -- 1st challenge

▶ External networks are connected to NACE as VLANs.

▶ Types of network accommodation

◆One-to-one accommodation

▪ accommodates one VLAN to a slice.

◆Many-to-one accommodation

▪ accommodates two or more VLANs to a slice.

8

Ethernet

Virtualization platform

External network

Payload

DMAC SMACVID t DMAC’ SMAC’ IP header GRE DMAC SMAC Payload

VLAN 100 NACE VNode

Switch

Physical port / Logical port (VLAN 100)

Ethernet Virtualization

platform VLAN 100

VNode External NACE

network Ethernet

DMAC SMAC Payload DMAC’ SMAC’ IP header GRE

Payload DMAC SMAC VID100 t

Payload DMAC SMAC VID200 t

Switch

VLAN 200

Physical port

VIDx00 t

t

High performance conversion using SMC

(using a NP)

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NACE as Intra-slice Switch -- 2nd challenge

▶ Specification method (slice design)

◆A slice developer can create a “switch node sliver (SNS)” in a NACE. -- SNS is a type of virtual node.

◆SNS works as a virtual Ethernet switch.

◆An SNS can connect to other node slivers using (GRE-based) virtual links.

▶ Implementation method

◆An SNS is implemented by the Ethernet switch (redirector body).

◆Virtual links are implemented by using an SMC (using a NP).

Switch node sliver

(SNS)

GRE link sliver

VID t DMAC SMAC Payload

DMAC’ SMAC’ IP header GRE

Payload

DMAC SMAC VID t High performance

conversion using SMC (using a NP)

Anther node sliver

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Applications and Evaluations of NACE, 1/2

10

Node sliver

ClientPC

IPEC Soft

SW

IPEC- Ether

GW

IPEC slice

ServerPC

IPEC Soft

SW IPEC-

Ether GW

IPEC Soft

SW IPEC-

Ether GW

AGW Link sliver

Link sliver Link sliver

NACE 2 NACE

1

VNode 1

VNode 2

VNode 3

“Data center”

▶ Gateway for data centers -- a method for testing a new protocol

◆Two simulated data centers with PC servers are connected to a slice using two NACEs, and a PC client is connected to the slice.

◆A new (non-IP) protocol called IPEC (IP Ether Chimera) is used on the slice.

◆IP/Ethernet is used in the data centers and in the PC client.

◆The protocol is converted on the border (IP/IPEC <-> IP/Ethernet).

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Applications and Evaluations of NACE, 2/2

▶ Distributed key-value store using an intra-slice switch

◆In this slice, MAC addresses are used for keys instead of hardware addresses.

◆The virtual switch selects a key-value store (server) using the key (destination MAC) in a query packet.

NACE 7 (Tokyo)

Node sliver

DB 1

(key-value server)

Ethernet Slice

DB 2

(key-value server)

DB 3

(key-value server)

VNode 4 (Hokuriku)

VNode 3 (Osaka)

VNode 1 (Tokyo)

Client

Switch node-sliver

(key31, val31) (key32, val32)

…

(key3n₃, val3n₃)

…

(key1n₁, val1n₁)

…

(key2n₂, val2n₂)

Query Advertise

D S

key ClientAddr type Query FFFFFFFF key type ^Advertise

D S

Value!

ClientAddr key type Answer value

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Slice-to-slice Connection and Demos in GEC 15

▶ In GEC 15 in October 23, our platform was connected to

GENI

(GEC 15 = 15th GENI Engineering Conference @ Houston, TX)

◆They are connected by a NACE placed at the University of Utah.

◆Slices of ProtoGENI are connected to our slices on JGN-X (a testbed in Japan).

12 Tokyo

Otemachi

JGN-X

GENI

University of Utah

Proto- GENI

VNode System

NC 7

Four VLANs (1517+1591+1592+1595)

VNode Front End

PRESTA

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High-performance Network Accommodation and Intra-slice Switching