Connectivity Guide

ZTD DHCP server conguration

For ZTD operation, congure a DHCP server in the network by adding the required ZTD options; for example:

option domain-name "example.org";

option domain-name-servers ns1.example.org, ns2.example.org;

option ztd-provision-url code 240 = text;

default-lease-time 600;

max-lease-time 7200;

subnet 50.0.0.0 netmask 255.255.0.0 {

range 50.0.0.10 50.0.0.254;

option routers rtr-239-0-1.example.org, rtr-239-0-2.example.org;

}

host ztd-leaf1 {

hardware ethernet 90:b1:1c:f4:a9:b1;

fixed-address 50.0.0.8;

option ztd-provision-url "http://50.0.0.1/ztd.sh";

}

ZTD provisioning script

Create a ZTD script le that you store on an HTTP server. Congure the URL of the script using DHCP option 240 (ztd-provision-

url) on the DHCP server.

ZTD downloads and executes the script to upgrade the OS10 image, congure the switch, and execute a post-ZTD script to perform

additional functions.

• Write the ZTD provisioning script in bash. Enter #!/bin/bash as the rst line in the script. You can use the sample script in this

section as a basis.

• For IMG_FILE, enter the URL path of the OS10 image to download and upgrade the switch. The image is written to the standby

partition.

• For CLI_CONFIG_FILE, enter the URL path of the CLI batch le to download and execute.

• For POST_SCRIPT_FILE, enter the URL path of the script to execute.

NOTE

: Enter each ZTD le URL in the provisioning script with a Unix-style line

ending.

• ZTD fails and exits to CLI conguration mode if:

– You do not specify at least one valid URL for the IMG_FILE, CLI_CONFIG_FILE, and POST_SCRIPT_FILE variables.

– Any of the IMG_FILE, CLI_CONFIG_FILE, and POST_SCRIPT_FILE entries are invalid or if specied, the les cannot be

downloaded.

For the IMG_FILE, CLI_CONFIG_FILE, and POST_SCRIPT_FILE les, you can specify HTTP, SCP, SFTP, or TFTP URLs. For

example:

scp://userid:passwd@hostip/filepath

sftp://userid:passwd@hostip/filepath

Example

#!/bin/bash

####################################################################

# Example OS10 ZTD Provisioning Script

Getting Started