Users Guide

Figure 16. Standard Fabric Design — Bandwidth and Port Count

1. In the Bandwidth Specification section:

a. Select the uplink bandwidth (10 GB or 40 GB) from the Uplink Bandwidth drop-down menu.

b. Select the downlink bandwidth (1 GB, 10 GB, or 40 GB) from the Downlink Bandwidth drop-

down menu.

• If you select the 1 Gb Downlink Bandwidth option, AFM supports deployment topologies using

S55 and S60 switches on the access side.

• If you select the 10 Gb Downlink Bandwidth option, AFM supports deployment topologies using

S4810 and S4820T switches on the access side.

• If you select the 40 Gb Downlink Bandwidth option, AFM supports deployment topologies using

Z9000 and S6000 switches on the access side.

2. In the Number of edge ports required by the fabric section, enter the number of required uplink

ports (connections to the WAN) for initial deployment in the Uplink Ports Current column.

• The minimum number of uplinks is two and the number of uplinks must be even. One uplink is

for redundancy.

• For fabric using 10 GB bandwidth, AFM supports 2–32 uplinks.

• For fabric using 40 GB Bandwidth, AFM supports 2–8 uplinks.

• For a Layer 2 VLT fabric or a Layer 3 with Resiliency (Routed VLT) fabric, an edge port link (uplink)

connects to the aggregation or core switches that connect outside the fabric. For a three-tier

fabric, edge links connect to the core switches. For a two-tier fabric, edge links connect to

aggregation switches.

• For Layer 3 distributed core, an edge port link (uplink) connects to the first two leaves that

connect to the edge WAN, which typically connects to an internet service provider (ISP).

3. In the Downlink Ports Current column, enter the required number of downlink ports for initial

deployment. The default is two downlink ports and the number of ports must be even.

4. In the Uplink Ports Future column, enter the required number of uplink ports (connections to the

WAN) for future expansion of the fabric. If the future ports are not reserved, you cannot expand the

fabric in the future.

Designing a Fabric