• Data Center Networking– Server Load Balancing– Server Offload (SSL/HTTP Compression)

• WAN Optimization– Caching– Compression– TCP Optimization

• Global Data Center Networking• Virtual Private Networks

– TDM Circuit– MPLS LSP– IPSec– SSL

Networking Segments

Service Provider

(L3 Routing)

• Telcos• Cable

Enterprise

(L2 Switching)

• Business• University

Evolved into Data Center Networking

Basic HTTP Request

Client

Server

LocalNameServer

IntermediateName Server

AuthoritativeName Server

Single Data Center HTTP Requests

Clients

ServerFarmServer

LoadBalancer

IntermediateName Server

LocalNameServer

AuthoritativeName Server

HTTPS + Compression

Basic HTTP Transaction

LAN WAN DC

SYN

SYN/ACK

ACK

HTTP GET

HTTP GET

HTTP GET

Response

Response

Response

WAN Optimized HTTP Requests

Clients

ServerFarmServer

LoadBalancer

IntermediateName Server

AuthoritativeName Server

LocalNameServer

Cache

CachePrefetch

TCP Connection

HTTPS + Compression

WAN Optimization

LAN WAN DC LAN WAN DC

Prefectch

CachedResponses

SYN

SYN/ACK

ACK

HTTP GET

HTTP GET

HTTP GET

Response

Response

Response

Multi-Data Center HTTP Request

Clients

Clients

Local Name Server IntermediateName Server Authoritative

Name Server

Global ServerLoad Balancer

IntermediateName Server

AuthoritativeName Server

Global ServerLoad Balancer

ServerLoadBalancer Server

Farm

ServerLoadBalancer Server

Farm

Local Name Server

Data Center Load Balancing

Web Servers

ISP-1 ISP-2

Database Servers

PIX™

FirewallPIX™

Firewall

Secure ContentAccelerator

Content Switch Content Switch

Secure ContentAccelerator

Virtual Private Networks

Address Privacy

(i.e. Virtual Network)

• ATM• Frame Relay• MPLS

Data Privacy

(i.e. Encryption)

• IPSec• SSL

Single Service Provider Network

Global ServerLoad Balancer

ServerLoadBalancer Server

Farm

Global ServerLoad Balancer

ServerLoadBalancer Server

Farm

Global ServerLoad Balancer

ServerLoadBalancer Server

Farm

Client A

Client B

Client C

DataCenter D

DataCenter E

DataCenter F

AS 2CE CE

PE PE

Single Service Provider Scenario

P

OSPF w/ MPLS RIPRIP

SRC IPDST IP

SRC IPDST IP

LDPLabel

SRC IPDST IP

LDPLabel

SRC IPDST IP

IPSec/SSL

IPSec or ATM/FR/PW

SRC IPDST IP

DLCIVPI/VCIPW Label

SRC IPDST IP

DLCIVPI/VCIPW Label

SRC IPDST IP

DLCIVPI/VCIPW Label

SRC IPDST IP

AS 1 AS 3

CE CE

PEPEASBR ASBR

Inter-AS Scenario

PP

RIP RIP

EBGP w/ MPLS

?

SRC IPDST IP

SRC IPDST IP

SRC IPDST IP

VPNLabel

LDPLabel

SRC IPDST IP

VPNLabel

LDPLabel

SRC IPDST IP

VPNLabel

IPSec/SSL

IPSec or ATM/FR/PW

OSPF w/ MPLS OSPF w/ MPLS

LDPLabel

LDPLabel

AS 1

AS 2

AS 3

CE CE

PEPE CSC-CE

CSC-PE

CSC-CE

CSC-PE

Carrier-Serving-Carrier Scenario

P

PP

SRC IPDST IP

SRC IPDST IP

VPNLabel

LDPLabel

SRC IPDST IP

SRC IPDST IP

VPNLabel

SRC IPDST IP

VPNLabel

VPNLabel

RIP RIP

EBGP w/ MPLS

OSPF w/ MPLS OSPF w/ MPLS?

LDPLabel

LDPLabel

AS 1

AS 2

AS 3

CE CE

PEPE CSC-CE

CSC-PE

CSC-CE

CSC-PE

Carrier-Serving-Carrier Scenario

P

PP

SRC IPDST IP

SRC IPDST IP

VPNLabel

LDPLabel

SRC IPDST IP

SRC IPDST IP

VPNLabel

SRC IPDST IP

VPNLabel

LDPLabel

IPSec/SSL

IPSec or ATM/FR/PW