Routing cip nhrp mpoa
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Routing(CIP, NHRP, MPOA). 한 치 문. Contents. ATM vs. Internet Protocol IP Technologies & Interworking Protocols IP Forwarding ---- IP over ATM Routing over Large Cloud ---- NHRP IP Multicasting ---- MARS Integrated Services. Internet Protocol Suite.

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Routing(CIP, NHRP, MPOA)

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Routing cip nhrp mpoa

Routing(CIP, NHRP, MPOA)

한 치 문


Contents

Contents

  • ATM vs. Internet Protocol

  • IP Technologies & Interworking Protocols

    • IP Forwarding ---- IP over ATM

    • Routing over Large Cloud ---- NHRP

    • IP Multicasting ---- MARS

    • Integrated Services


Internet protocol suite

Internet Protocol Suite

Mapping

hostname &

IP address

Remote

host

access

Transparent

file

access

e-mail

Reachability

test

File

Transmission

Web

access

Network

Management

Diskless

system

Ping

Telnet

FTP

SMTP

HTTP

Trace

Route

DNS

SNMP

NFS

BOOTP

TCP

UDP

Transport

ICMP

IP

IGMP

Network

ARP

Data

Link

RARP

Data Link

Physical

Media


Network interworking using router

Network Interworking using Router

FTP

client

FTP

client

FTP protocol

TCP

TCP

TCP protocol

Router

IP

IP

IP protocol

IP protocol

IP

Ethernet

driver

Ethernet

driver

Interworking

protocol

Interworking

protocol

Ethernet

protocol

WAN

Ethernet


Routing cip nhrp mpoa

ATM의 위치

  • ATM은 고속의 전달 기능 수행

    • 물리 계층 프로토콜

    • Network 계층과의 정합을 위한 프로토콜 필요

    • 고속의 switched path 제공

Network Layer(IP, IPX, SNA)

Ethernet

Token

ring

FDDI

Protocol

ATM

X.25

Frame

relay

Data link

Physical

layer

LAN

WAN


Ip atm address mapping

IP-ATM Address Mapping

- Address Resolution

- Logical IP subnet

LAN

IPaddr-4

IPaddr-5

Router

IPaddr-2

ATMaddr-2

IPaddr-1

ATMaddr-1

IPaddr-3

ATMaddr-3

ATM Network

ARP server


Ip mac atm address mapping

IP-MAC-ATM Address Mapping

IPaddr-3

- Address Resolution

- Logical IP subnet

LAN

MACaddr-3

Upper

IPaddr-1

IPaddr-2

IPaddr-4

IP

MACaddr-4

ARP

MAC

MACaddr-2

ATMaddr-2

Bridge

MACaddr-1

ATMaddr-1

ATMaddr-3

PHY

Ethernet

ATM Network

LES(LAN Emulation Server)

BUS(Broadcast & Unknown Server)


Lane service protocol

LANE Service & Protocol


Ip over atm protocol

(4)ARP table

IP addr ATM addr

ARP 서버는 LIS내 모든 IWF과

PVC/SVC로 접속 되어야 함

1.1.10.1 Add1

1.1.10.2 Add2

ARP

Server

1.1.3.2

1.1.2.2

(3)ARP_req(1.1.10.2)

수신단말

송신단말

PVC/SVC

1.1.3.1

1.1.2.1

(5)ARP_res(Add2)

Add1

Add2

(6)Signalling

IWF-1

IWF-2

LAN

LAN

1.1.10.1

1.1.10.2

1.1.2.2

1.1.2.2

(7)

(1)IP packet

(8)IP packet

ATM Network

IP addr Next hop

IP addr Next hop

1.1.2.x 1.1.10.2

1.1.3.x 1.1.10.1

(2)Routing table

ATM

Switch

IWF

IWF

LAN

UNI

LAN

ARP Server

IP over ATM Protocol


New requirements for ip service over atm

New Requirements for IP service over ATM

  • Routing over Large Cloud

    • ARP over large cloud ==> NHRP

    • LANE + NHRP + Router ==> MPOA

  • IP Multicasting

    • Multicasting in a router ==> Multicasting in a ATM network

    • MARS(Multicast Address Resolution Server)

  • Integrated IP Services

    • Best effort service ==> Conventional IP service

    • Guaranteed service ==> RSVP

    • Controlled load services==> RSVP

NHRP: Next Hop Resolution Protocol

MPOA: Multiprotocol over ATM

RSVP: Reservation Protocol


Routing cip nhrp mpoa

ATM망을 인터넷 접속용으로 사용

대학

일반 기업

특정 가입자들간에만 통신할 수 있는 논리망 구축

ATM WAN을 이용한 기업망 구축

특정 서비스를 위한 소규모 그룹간 통신

데이터 서비스를 위한 공중망 가입자 형태

기업망

인터넷 접속

Internet backbone

Subnet-1

Subnet-2

ATM Network

ATM Network

Router

Router


Nhrp next hop resolution protocol

NHS2

NHS3

NHS1

NHS4

NHRP_

Request

NHRP_

Reply

LIS1

LIS2

LIS3

LIS4

Router

Router

NHRP(Next Hop Resolution Protocol)

  • ARP 프로토콜

    • Logical IP의 범위를 벗어나는 경우에도 주소변환 가능

    • 주소변환 프로토콜만 기술되어 있음


Multiprotocol over atm

Multiprotocol over ATM

Multiprotocol over ATM

IETF

Multicast Address Resolution

Next Hop Resolution Protocol

Routing

Bridging

LAN Emulation(LANE)


Multiprotocol over atm mpoa

Multiprotocol over ATM(MPOA)

MPOA

Client

MPOA

Server

MPOA Router

MPOA Host

Edge Device

NHS

3계층

Forwarding

Engine

LEC

LEC

Routing

Engine

LEC: LAN Emulation Client

NHS: Next Hop Server

ELAN: Emulated LAN

MPOA

Host

MPOA

Host

MPOA

Host

Edge

Device

ELAN

ELAN

ELAN

Edge

Device

MPOA

Router

MPOA

Router

Edge

Device

Edge

Device

MPOA

Host


Routing cip nhrp mpoa

Default

Path

ELAN-2

Router-1

(MPS)

Router-2

(MPS)

Default

Path

Default

Path

ELAN-1

ELAN-3

Host

Shortcut Path

ATM Host

(MPC)

Edge Device

(MPC)

LAN

ELAN

ELAN

Default

ELAN

LAN

NHRP Request

NHRP Request

Shortcut

MPOA Request

NHRP Response

NHRP Response

MPOA Reply

Shortcut

LAN

MPC: MPOA Client

MPS: MPOA Server

ELAN: Emulated LAN

MPOA 데이터 전달 과정


Ip multicasting

Source

S

R

R

R

DVMRP or

MOSPF or

PIM

D

R

R

R

R

IGMP

D

D

D

D

IP Multicasting

DVMRP: Distance Vector Multicast Routing Protocol

MOSPF: Multicast Open Shortest Path First

PIM: Protocol Independent Multicasting

IGMP: Internet Group Management Protocol

Destination


Multicast address resolution server mars

Multicast Address Resolution Server(MARS)

  • ClusterControlVCC

    • Group membership 변화를 LIS에 방송하기 위한 P-to-MP

  • Multicast Address Resolution

    • Router는 멀티캐스트 그룹 및 ATM 주소 등록

    • 송신노드는 그룹 멤버들의 ATM 주소를 MARS에게 질의

    • 송신노드는 P-to-MP 연결에 멤버(수신노드) 추가

MARS

MARS Req

MARS Multi

Router-2

ClusterControlVC

LIS

Router-1

Router-3

P-to-MP


P to mp vs mcs

P-to-MP vs. MCS

MCS

VC meshes

1

none

additional hops

yes

no

bottleneck node

low

high

signaling overhead

low

high

VC resources usage

high(larger LISs)

low

scalability

no

no

QoS support


Ip vs atm

IP vs ATM

ATM

IP

RSVP

Connectionless

Connection oriented

I.364, IP switching

InteServ

Best effort

Guaranteed service

IP switching

Routing

Switching

Integration

Dynamic

routing

PNNI

Static

routing


Integrated service model

Integrated Service Model

  • RFC 1633, Integrated Services in the Internet Architecture: an overview

    • Integrated service model

    • A reference implementation frame work

  • Background

    • Real-time application support on IP network

    • Resource reservation by flows: Flow specific state in the router

    • Explicit reservation setup mechanism

  • Services

    • Best-effort service

    • Guaranteed service

      • Guaranteed delay & bandwidth

    • Controlled-load service

      • Closely approximating the QoS


Implementation model for routers

Implementation Model for Routers

Routing

Agent

RSVP

Management

Agent

Background

Code

Admission

Control

Routing

Database

Traffic Control Database

Packet scheduler

Forwarding

Path

Classifier

Input

Driver

Internet

Forwarder

Output Driver


Rsvp reservation protocol

RSVP(Reservation Protocol)

  • RSVP Working Group

    • Allows applications to reserve network resources

      • Flow

      • Flowspec

    • Implemented in hosts and routers

    • Structure and content of QoS parameters: Defined by IntServ

  • RSVP Attributes

    • Multicast or unicast data delivery

    • Dynamic group membership change and route change

    • Simplex: reserve only one direction

    • Receiver initiation: scalability

    • Routing protocol independence

    • Transparent operation to non-RSVP router

    • IPv6 and IPv6 support


Rsvp intser vs atm

RSVP/IntSer vs. ATM


Ip qos

ATM address

or VCC

P-to-MP

connection

IP QoS 파라메터 매핑

  • ATM은 다양한 QoS 제공

    • Guaranteed service

    • Best effort service

  • Integrated Internet Service를 위한 프로토콜 필요

    • ARP, IP Multicast service over ATM

    • QoS signalling

Best effort

IP address

RSVP

IP network

Controlled load

Guaranteed

IP QoS

IP Multicasting

ABR/UBR

Signalling

ATM network

VBR

CBR

ATM QoS


Protocols for data over atm

IP Layer

MAC

LANE

IP over ATM(ARP)

Existing Protocol(RIP, OSPF)

MARS/P-to-MP or MARS/MCS

???

NHRP

OSPF, I-PNNI, TDP

IP Packet Forwarding

IP Routing(RIP, OSPF)

IP Multicasting

InteServ/RSVP

ARP over Large Cloud

Routing over Large Cloud

MPOA

Protocols for Data over ATM

LANE: LAN Emulation

ARP: Address Resolution Protocol

RIP: Routing Information Protocol

OSPF: Open Shortest Path First

MARS: Multicast Address Resolution Server

MCS: Multicast Server

RSVP: Reservation Protocol

NHRP: Next Hop Resolution Protocol

I-PNNI: Integrated PNNI

TDP: Tag Distribution Protocol


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