Nortel Web OS Switch Software Application Manual page 14

Web OS 10.0 Application Guide
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Figure 6-10: Repelling DoS SYN Attacks With Delayed Binding 147
Figure 6-11: Layer 4 DNS Load Balancing 151
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Figure 7-10: Active FTP for Dynamic NAT 195
Figure 7-11: TCP ACK Matching Network 197
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Figure 11-1: Example 1: VRRP Router 250
Figure 11-2: Example 2: VRRP Router 252
Figure 11-3: A Non-VRRP, Hot-Standby Configuration 253
Figure 11-4: Active-Standby Redundancy 254
Figure 11-5: Active-Active Redundancy 255
Figure 11-6: Hot-Standby Redundancy 256
Figure 11-7: Active-Active High Availability 260
Figure 11-8: Active-Standby High-Availability Configuration 263
Figure 11-9: Active-Active High-Availability Configuration 265
Figure 11-10: Hot-Standby Configuration 275
Figure 11-11: Loops in Active-Active Configuration 278
Figure 11-12: Cross-Redundancy Creates Loops, But STP Resolves Them 279
Figure 11-13: Using VLANs to Create Non-Looping Topologies 279
Figure 11-14: Stateful Failover Example when the Master Switch Fails 284
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14 Figures
Traditional Versus SLB Network Configurations 119
Web Hosting Configuration Without SLB 121
Web Hosting with SLB Solutions 121
SLB Client/Server Traffic Routing 122
Example Network for Client/Server Port Configuration 123
Basic Virtual Port to Real Port Mapping Configuration 140
Direct Server Return 143
Mapped and Nonmapped Server Access 144
DoS SYN Attacks without Delayed Binding 146
Assigning Filters According to Range of Coverage 172
Assigning Filters to Overlapping Ranges 172
Assigning a Default Filter 173
VLAN-based Filtering 174
Configuring Clients with Different Rates 180
Limiting User Access to Server 183
Security Topology Example 185
Static Network Address Translation 192
Dynamic Network Address Translation 193
Traditional Network Without Web Cache Redirection 204
Network with Web Cache Redirection 205
212777-A, February 2002