Users Guide

Figure 11. Layer 3 with Resiliency (Routed VLT) with VLT option + Advanced VLAN IP Configuration

3. Layer 3 with Resiliency (Routed VLT) – Basic option – If you select the Basic option, configure the

VLAN with the primary and secondary IP addresses for each access switch.

4. Layer 3 with Resiliency (Routed VLT) with MXL Blade with interChassis option – For this topology,

select the Deployment Type with an MXL Blade switch with Resiliency (VLT) and Interchassis (across

chassis) resiliency. Enter the VLAN ID and the IP range. When you complete the pre-deployment

configuration, the Advanced VLAN IP Configuration option is available on the Configure and

Deploy Summary screen.

5. Layer 3 with Resiliency (Routed VLT) – Blade MXL with IntraChassis option: With this topology,

select the deployment with an MXL Blade switch with Resiliency (VLT) and the Intrachassis (within

the same chassis) resiliency option. Enter the VLAN ID, primary, and secondary IP addresses.

Use Case 5: Three-Tier Layer 2

If you select a three-tier Layer 2 fabric:

• The fabric links between the core and aggregation switches support the Layer 3 protocol.

• The fabric links between the aggregation and access switches support the Layer 2 protocol.

• The uplinks between the aggregation switches and external switch (WAN) support the Layer 3

protocol (OSPF, iBGP or eBGP).

• The downlinks from the access switches support the Layer 2 protocol (VLAN or VLAN/VRRP). The

default setting on the pre-deployment screen is VLAN configuration, which allows you to configure

downlink connections to servers. Select the VLAN and VRRP Configuration option to

support redundancy between the access switch and ToR switches.

Use Case 6: Three-Tier Layer 3 Resiliency (Routed VLT)

If you select a three-tier Layer 3 with Resiliency (Routed VLT) fabric:

• The fabric links between the core and aggregation switches support Layer 3 protocol with OSPF in the

VLAN interfaces.

• The fabric links between the aggregation and access switches support the Layer 2 protocol.

• The uplinks between the aggregation switch and external switch (WAN) support the Layer 3 protocol

(OSPF, iBGP or eBGP).

• The downlinks from the access switches support the Layer 2 protocol (VLAN/VRRP or VLAN IP).

During the design phase on the Deployment Topology screen, select the fabric type and deployment

Designing the Fabric