How to set dhcp server

UNIX for Advanced & Expert Users
1

I am trying to set dhcp server
installed tftp,xinetd,vsftp,dhcp,telnet services
Added dhcpd.conf at /etc/dhcp/dhcpd.conf
Edited /etc/xinetd.d and xinetd.conf to listen=yes for ipv4
Now when i start lpar install, ping test to this server is pass but after block size the packet count is not getting started :disappointed:
at dhcp server i see following messages

Apr  8 07:58:50 abc2 xinetd[189666]: START: tftp pid=201483 from=10.33.13.91 
Apr  8 07:58:50 abc2 xinetd[189666]: EXIT: tftp status=64 pid=201483 duration=0(sec) 
Apr  8 07:58:54 abc2 dhcpd[201274]: DHCPDISCOVER from ma:ca:dd:re:ss via en0: network vlan1130: no free leases 
Apr  8 07:59:08 abc2 dhcpd[201274]: DHCPREQUEST for 192.111.111.112 from ma:ca:dd:re:ss via en0: ignored (not authoritative). 
Apr  8 07:59:10 abc2 dhcpd[201274]: DHCPDISCOVER from ma:ca:dd:re:ss via enP49165p1s0: network vlan1130: no free leases
2

Hi @Priya_Amaresh,

Please confirm the OS and version that you're working on, it seems like AIX. I don't know that it matters, but good to be clear.

The biggest thing that I see is the no free leases message from dhcpd for ma:ca:dd:re:ss.

Please share your dhcpd.conf file contents.

How many systems are on the network? Are there more systems than the number of IPs in the DHCP pool?

3

The DHCP server and clients must be in same network segment.

From what i see your current DHCP is on network 10.33.13.X, while offering 192.111.111.x
Is this true ?

This can be alleviated by either

  1. Adding multiple interfaces (vlan tagged) to DHCP server and serving pools per network/interface.
  2. Introduce DHCP relay on your network gear.
  3. Encapsulation using VXLAN/GENEVE or VPN such as wireguard, effectively making one L2 network out of many IP networks - this one is a probably an overhead for your use case :slight_smile:

Regards
Peasant.