Dell Active Fabric Manager Guía de usuario descargar pdf (Pagina 25)

• Whether the leaves act as a ToR or are connecting to a server.

• Fabric interlink bandwidth (the links between the spines and leaves).

• Uplinks which are 10 Gb.

• Downlinks which are 1 Gb, 10 Gb, or 40 Gb.

• When the Open Shortest Path First (OSPF) is selected for both uplinks and interlinks, one of the uplinks or interlinks

must be in area 0. If one uplink is in area 0 then the interlinks must not be in area 0.

• The fabric over-subscription ratio.

• Fixed fabric interlink bandwidth that is based on the fabric type: 10 Gb or 40 Gb.

Important: If you do not specify additional links in the fabric design for future expansion in the Bandwidth and Port

Count screen, you can only expand the downlinks on the existing fabric.

For information about how to expand a fabric, see Editing and Expanding an Existing Fabric Design.

Gathering Useful Information for a Distributed Core

To gather the following useful information for a Layer 3 distributed core fabric before you begin:

• Obtain the comma-separated values (CSV) file that contains the system media access control (MAC) addresses,

service tag, and serial numbers for each switch provided from Dell manufacturing or manually enter this information.

• Obtain the location of the switches, including the rack and row number from your network administrator or network

operator.

• Obtain the Remote Trivial File Transfer Protocol (TFTP) or File Transfer Protocol (FTP) address from your network

administrator or network operator. To specify a TFTP/FTP site, go to Administration > Settings > TFTP/FTP screen.

For information about which software packages to use, see the Release Notes.

• Download the software image for each type of switch in the fabric. Each type of switch must use the same version of

the software image within the fabric. Place the software images on the TFTP or FTP site so that the switches can

install the appropriate FTOS software image and configuration file.

• Obtain the Dynamic Host Configuration Protocol (DHCP) server address to be used for the fabric from your DHCP

network administrator or network operator. If a remote DHCP server is not available, AFM also provides a local

DHCP server. The DHCP server must be in the same subnet where the switches are located. After you power cycle

the switches, the switches communicate with the DHCP server to obtain a management IP address based on the

system MAC address. The DHCP server contains information about where to load the correct software image

configuration file for each type of switch from the TFTP/FTP site during BMP. For information about BMP, see DHCP

Integration.

• Obtain pool of IP addresses for the management port for each switch in the fabric.

• Obtain IP addresses (must be an even number) for the uplink configuration from the ISP service. The uplink port

number range is based on whether a 10 Gb or 40 Gb bandwidth is selected.

– For a 10 Gb bandwidth, AFM supports 2 to 32 uplinks.

– For a 40 Gb bandwidth, AFM supports 2 to 8 uplinks.

• Obtain IP addresses for the downlink configuration for connecting to the server or ToR.

• Obtain IP addresses for the fabric link configuration for the spine and leaf switches.

• Gather protocol configuration for uplinks, downlinks and fabric link configuration

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