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How to configure Bootprelay using EXOS

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TitleHow to configure Bootprelay using EXOS
Objective
How do I configure bootprelay for a specific VLAN
Environment
EXOS All
Procedure
First verify that the switch can communicate with the DHCP server with a ping test:

ping <ip_address>

You should see results similar to the below example:

switch-name # ping <ip_address>

Ping(ICMP) <ip_address>: 4 packets, 8 data bytes, interval 1 second(s).
16 bytes from <ip_address>: icmp_seq=0 ttl=64 time=2.128 ms
16 bytes from <ip_address>: icmp_seq=1 ttl=64 time=1.006 ms
16 bytes from <ip_address>: icmp_seq=2 ttl=64 time=0.330 ms
16 bytes from <ip_address>: icmp_seq=3 ttl=64 time=0.330 ms


If communication is established use the following commands to enable bootprelay:

configure bootprelay add <dhcp_server_ip>
enable bootprelay vlan <vlan-name>
Additional notes
Bootprelay must be enabled both on the client VLAN, as well as the server VLAN. Both VLANs must also have an IP address configured and IP forwarding enabled.

If the DHCP server is not in a subnet present on this switch, bootprelay must be enabled on the VLAN that the switch will use to reach the DHCP server. You can find this VLAN with the command rtlookup <dhcp_server_ip>
.

Related Articles:
Troubleshooting DHCP issues

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