13.3. Example Hardware Configuration
This section contains an example configuration of specific switch models for zone-level layer-3 switching. It assumes VLAN management protocols, such as VTP or GVRP, have been disabled. The example scripts must be changed appropriately if you choose to use VTP or GVRP.
The following steps show how a Dell 62xx 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 Ethernet port 1/g1.
The Dell 62xx Series switch supports up to 1024 VLANs.
Configure all the VLANs in the database.
vlan database
vlan 200-999
exit
Configure Ethernet port 1/g1.
interface ethernet 1/g1
switchport mode general
switchport general pvid 201
switchport general allowed vlan add 201 untagged
switchport general allowed vlan add 300-999 tagged
exit
The statements configure Ethernet port 1/g1 as follows:
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.
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
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.
