BitEngine 12000 IPv6 Core Router Dr. Fu Lizheng VP Technology - - PowerPoint PPT Presentation

BitEngine 12000 IPv6 Core Router

• Dr. Fu Lizheng

VP Technology Tsinghua Bitway Networking Technology Co.,Ltd.

• Feb. 23, 2005

The development of NGI in world

• The scale of NGI networks becomes much bigger in world:

! Internet2 Abilene backbone upgrades to 10Gbps and IPv6 ! USA started NLR research project in last year ! Next generation of EU GEANT,6net and Euro6IX ! Asia Pacific academic network,APAN is becoming bigger，IPv6 Task Force,is pushing pure world-level IPv6 backbone ! Whole world IPv6 NGI, GTRN

• January 2003 DoD declared to migration its network to IPv6
• IPv6 network equipments and application software

! IPv6 equipment: Juniper，CISCO，Hitachi, Huawei, Bitway… ! IPv6 software：Microsoft，SUN，…

• August 2003，China declared CNGI project in future years.
• December 25 2005, CERNET2, the biggest pure IPv6

testbed in the world was opened.

The Key Technologies of NGI

• IPv6/v4 core router
• Migration technology from IPv4 to IPv6
• Distributed-cluster Core router technology

?

Multiple routers, multiple routing instances Multiple routers, multiple routing instances

Features of BitEngine12000 IPv4/v6 Core Router

• IPv6 oriented，but IPv4 support also
• Modular structure, smoothly upgrading support
• High speed physical interface
• Hot swapping and key components redundancy
• Hardware-supported packet forwarding
• Unicast and Multicast protocols support
• Securities support
• Multiple IPv4/v6 migrations support

BE12016 BE12008 BE12004

Features of BitEngine12000 IPv4/v6 Core Router

• RIPv2、RIPng、OSPFv2、OSPFv3、BGP4＋
• PIM/SM multicast protocols
• Configurated tunnel、6to4 tunnel、NAT-PT
• IPsec and IKE
• SNMP v2/v3
• IPv4/v6 packet: line rate forwarding
• Switch capicity: 320Gbps
• IPv6/IPv4 route table: 1M

BE12016 BE12008 BE12004

Hardware Structure

HSSLBackplane

OC - 48 c Line Card 1

O P T I C S O P T I C S

OC - 48 c Line Card 2

O P T I C S O P T I C S

OC - 48 c Line CardN

O P T I C S O P T I C S

GE Line Card 1

O P T I C S O P T I C S

GE Line Card 2

O P T I C S O P T I C S

GE Line CardN

O P T I C S O P T I C S

10G Ethernet Line Card 1 Routing Processor Card 2 Routing Processor Card 1 Switching Control Card 2 Switching Control Card 1 10G Ethernet Line CardN OC - 3c Line Card 1

O P T I C S O P T I C SOC - 3 c

Line Card 2

O P T I C S O P T I C S

OC - 3c Line CardN

O P T I C S O P T I C S

console

Hardware Architecture

HSSL BackPlane

Switch A Switch B Route Proc.CPU Route Proc.CPU

. . . . . .

Physical interface

10GE OC48 OC3 GE FE

Switch interface IP Pack. Proc.

CPU

IP pack. Output

Route Search

Memory management schedule Memory Management schedule

• Dist. Comm. channel

......

Switch interface

Software Architecture

Shell SNMP IKE BGP4+/OSPFv2/ OSPFv3/RIP/RIPng MIB

操作管理子系 操作管理子系 操作管理子系 操作管理子系

TCP、UDP

GRT 路由管理子系 路由管理子系 路由管理子系 路由管理子系 路由 路由 路由 路由 子系 子系 子系 子系 支 支 支 支撑 撑 撑 撑子系 子系 子系 子系 IP(面向上 面向上 面向上 面向上 接口） 接口） 接口） 接口）

ICMP

冲管理 冲管理 冲管理 冲管理 板 板 板 板 通信 通信 通信 通信 子系 子系 子系 子系 存管理和 存管理和 存管理和 存管理和 板 板 板 板 通信子系 通信子系 通信子系 通信子系

Manager Agent 冲管理 板 通信

MIB LRT

接口子系 接口子系 接口子系 接口子系 2.5G POS IPSec IP ICMP ND Manager Agent 冲管理 板 通信

MIB LRT

接口子系 接口子系 接口子系 接口子系 FE × 8 IPSec IP ICMP ND 接口子系 接口子系 接口子系 接口子系 1000M ETH IPSec IP ICMP ND Manager Agent

MIB

冲管理 板 通信

LRT

接口子系 接口子系 接口子系 接口子系 155M POS IPSec IP ICMP ND Manager Agent

MIB

冲管理 板 通信

LRT

• Distr. Message Comm.

从 从 从 从 点 点 点 点1 从 从 从 从 点 点 点 点2 从 从 从 从 点 点 点 点3 从 从 从 从 点 点 点 点4 . . . . . . . . . . . .

Switch network

. . . . . . . . . . . .

安全子系 安全子系 安全子系 安全子系

B W O S

Key Technologies of BitEngine12000

• BWOS Operation System
• IPv6/IPv4 Route Management
• IPv6 andIPv4 Migration
• High Availability (HA)
• High Speed Serial Link Backplane
• High performance IP packet processing with

FPGA

Extensional Router OS(BWOS)

Hardware DRIVER BSP DRIVER BSP BSP KERNEL DCOMM. [IP/TCP/UDP] Route protocols OAM/SNMP DATABASE Task schedule Memory management Clock management File system High availability system KERNEL Error check Faults diagnosis Schedule management Synchronization Vote strategy Redundancy Comm. High availability system

IPv6/v4 dynamically self-adjustment route allocation

Line card

Packet processing FPGA （route searching/head proc.） To switch network IPv6/IPv4 TCAM 表 IPv6/IPv4 TCAM table

IPv6/IPv4

• Des. IP

IPv6/IPv4 result

IPv6 packets IPv4 packets

IPv6/IPv4 Software forwarding table

IPv6/v4 dynamically self-adjustment route allocation

• Fastness：has the maximum search speed

50Mpps， with TCAM， can meet 2.5G （6.1Mpps), even 10G(25Mpps) requirement.

• Dynamics：may dynamically allocation and

adjustment to IPv6/IPv4 route table according to the changed route table.

• Extension：multiple TCAM cascade.

IPv4 over IPv6 tunnel

• Traditional tunnel of IPv4/v6

!IPv6 packets over IPv4 network !Lack of auto-configuration and route-learn capability

• Propose a method of IPv4 packets over the pure

IPv6 network !suitable multiple flexible IPv4 and IPv6 network interconnection cases !with auto-configuration of route

High Reavailability

• Hardware redundancy design

!Duplicate Route Processing (RP) CPUs !Duplicate data switch elements !Duplicate control communication channels !1+1 powers and fans

• Software state duplicate

!Master/slave RP CPU !Routing protocols in dual RP CPUs !Fault-tolerant TCP support

Trials and applications

• Since December 2003, BitEngine12000 routers

were run in IPv6 testbed supported by state 863 project.

CERNET2 Testbed of CNGI

CERNET2 Backbone of CNGI

• 25 BitEngine12016 routers have been used in

CERNET2 backbone since December 2004.

Some sceneries of CERNET2

The end. Thank you!