Sandwich Deployment Mode - Cisco Nexus 9000 Series Configuration Manual

Sandwich Deployment Mode

Figure 2: One-Arm Deployment Mode with vPC
Sandwich Deployment Mode
The sandwich deployment mode uses two switches to provide stateful handling of traffic.
The main requirement in this mode is that both the forward and reverse traffic of a flow must go through the
same appliance. Examples include firewalls and load balancer deployments, where traffic between the client
and the server must flow through the same appliance.
The key features are:
• An ITD service for each network segment, one for the outside network and another for the inside network.
• A source IP address load-balancing scheme where the ITD service operates on the interface that connects
• A destination IP address load-balancing scheme where the ITD service operates on the interface that
Cisco Nexus 9000 Series NX-OS Intelligent Traffic Director Configuration Guide, Release 9.x
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to the outside world in an ingress direction.
connects to the servers in the ingress direction.
Configuring ITD