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Cisco 3750
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• All VLANs (300-999) are passed to all the pod-level layer-2 switches.
14.3.2. Cisco 3750
The following steps show how a Cisco 3750 is configured for zone-level layer-3 switching. These
steps assume VLAN 201 is used to route untagged private IPs for pod 1, and pod 1’s layer-2 switch is
connected to GigabitEthernet1/0/1.
1. Setting VTP mode to transparent allows us to utilize VLAN IDs above 1000. Since we only use
VLANs up to 999, vtp transparent mode is not strictly required.
vtp mode transparent
vlan 200-999
exit
2. Configure GigabitEthernet1/0/1.
interface GigabitEthernet1/0/1
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk native vlan 201
exit
The statements configure GigabitEthernet1/0/1 as follows:
• VLAN 201 is the native untagged VLAN for port GigabitEthernet1/0/1.
• Cisco passes all VLANs by default. As a result, all VLANs (300-999) are passed to all the pod-level
layer-2 switches.
14.4. Layer-2 Switch
The layer-2 switch is the access switching layer inside the pod.
• It should trunk all VLANs into every computing host.
• It should switch traffic for the management network containing computing and storage hosts. The
layer-3 switch will serve as the gateway for the management network.
Example Configurations
This section contains example configurations for specific switch models for pod-level layer-2 switching.
It assumes VLAN management protocols such as VTP or GVRP have been disabled. The scripts must
be changed appropriately if you choose to use VTP or GVRP.
14.4.1. Dell 62xx
The following steps show how a Dell 62xx is configured for pod-level layer-2 switching.
1. Configure all the VLANs in the database.
vlan database
vlan 300-999
exit