Data Center Networking Server Load Balancing Server Offload

• 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 (L 3 Routing) Enterprise (L 2 Switching) • Telcos • Cable • Business • University Evolved into Data Center Networking

Basic HTTP Request Intermediate Name Server Authoritative Name Server Local Name Server Client

Single Data Center HTTP Requests Intermediate Name Server Authoritative Name Server Load Balancer Local Name Server n p sio s e r S TP HT Clients + m Co Server Farm

Basic HTTP Transaction SYN/ACK HTTP GET Response LAN WAN DC

WAN Optimized HTTP Requests Intermediate Name Server Cache Prefetch Authoritative Name Server Local Name Server ion t c ne on C CP T Cache H Clients S+ P TT p m Co ion s s re Server Load Balancer Server Farm

WAN Optimization SYN/ACK Prefectch HTTP GET Cached Responses Response HTTP GET Response LAN WAN DC

Multi-Data Center HTTP Request Server Load Balancer Clients Local Name Server Intermediate Name Server Farm Authoritative Name Server Global Server Load Balancer Local Name Server Intermediate Name Server Authoritative Name Server Global Server Load Balancer Clients Server Load Balancer Server Farm

Data Center Load Balancing ISP-1 ISP-2 Secure Content Accelerator PIX™ Firewall Web Servers Content Switch PIX™ Firewall Content Switch Database Servers

Virtual Private Networks Address Privacy (i. e. Virtual Network) Data Privacy (i. e. Encryption) • ATM • Frame Relay • MPLS • IPSec • SSL

Single Service Provider Network Data. Center D Server Load Balancer Client A Server Farm Global Server Load Balancer Data. Center E Server Load Balancer Client B Server Farm Global Server Load Balancer Data. Center F Server Load Balancer Client C Server Farm Global Server Load Balancer

Single Service Provider Scenario PE PE P CE CE AS 2 SRC IP DST IP SRC IP LDP DST IP Label DLCI VPI/VCI PW Label SRC IP DST IP RIP DLCI VPI/VCI PW Label SRC IP LDP DST IP Label SRC IP DST IP DLCI VPI/VCI PW Label OSPF w/ MPLS IPSec or ATM/FR/PW IPSec/SSL SRC IP DST IP RIP

Inter-AS Scenario SRC IP DST IP SRC IP VPN LDP DST IP Label SRC IP VPN LDP DST IP Label SRC IP DST IP CE CE ASBR PE PE P P AS 1 RIP OSPF w/ MPLS AS 3 ? EBGP w/ MPLS IPSec or ATM/FR/PW IPSec/SSL OSPF w/ MPLS RIP

Carrier-Serving-Carrier Scenario CSC-PE P SRC IP DST IP SRC IP VPN LDP DST IP Label CE SRC IP DST IP CE AS 2 CSC-CE PE CSC-CE P PE P SRC IP VPN LDP DST IP Label AS 1 RIP OSPF w/ MPLS AS 3 ? EBGP w/ MPLS OSPF w/ MPLS RIP

Carrier-Serving-Carrier Scenario CSC-PE P SRC IP DST IP SRC IP VPN LDP DST IP Label CE SRC IP DST IP CE AS 2 CSC-CE PE CSC-CE P PE P SRC IP VPN LDP DST IP Label AS 1 AS 3 IPSec or ATM/FR/PW IPSec/SSL