Saturday, September 12, 2020

Extreme Switch - How to configure DHCP Server in EXOS


Here is a step-by-step procedure to configure the DHCP server with a VLAN in the EXOS server.


Step 1. Create and configure a VLAN with IP address and Ports


create vlan vlan_name    
configure vlan vlan_name ipaddress address/mask

exos-switch# create vlan DHCP_Server

exos-switch# configure vlan DHCP_Server ipaddress 192.168.100.1/24
IP interface for VLAN DHCP_Server has been created.

exos-switch# configure vlan DHCP_Server add ports 1-10
 Port 1 2 3 4 5 6 7 8 9 10 untagged has been auto-moved from VLAN "Default" to "DHCP_Server".


Step 2. Enable DHCP client ports with the VLAN


    enable dhcp ports port_list vlan vlan_name

exos-switch# enable dhcp ports 1-10 vlan DHCP_Server


Step 3. Configure DHCP address range with the VLAN


    configure vlan vlan_name dhcp-address-range start_addr - end_addr

exos-switch# configure vlan DHCP_Server dhcp-address-range 192.168.100.10 - 192.168.100.200


Step 4. Configure DHCP options with the VLAN


    configure vlan vlan_name dhcp-options default-gateway gateway_addr
    configure vlan vlan_name dhcp-options dns-server dns_addr

exos-switch# configure vlan DHCP_Server dhcp-options default-gateway 192.168.100.1
exos-switch# configure vlan DHCP_Server dhcp-options dns-server primary 1.1.1.1
exos-switch# configure vlan DHCP_Server dhcp-options dns-server secondary 8.8.8.8


Step 5. Check the DHCP configuration


exos-switch# show dhcp-server
VLAN "DHCP_Server":
    DHCP Address Range   : 192.168.100.10->192.168.100.200
    Netlogin Lease Timer : Not configured (Default = 10 seconds)
    DHCP Lease Timer     : Not configured (Default = 7200 seconds)
    Default Gateway      : 192.168.100.1
    Primary DNS Server   : 1.1.1.1
    Secondary DNS Server : 8.8.8.8
    Ports DHCP Enabled   : 1-10


Step 6. (Optional) Configure the DHCP lease timer

The DHCP lease timer can be changed as follows. This example shows a change from the default 2 hours to 8 hours.

exos-switch# configure vlan DHCP_Server dhcp-lease-timer 28800


  • Related Articles:


No comments: