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Archive => 18.1 Legacy Series => Topic started by: rocketme on July 04, 2018, 04:04:27 AM

Title: The same DHCP pool on different interface
Post by: rocketme on July 04, 2018, 04:04:27 AM
Hi all.
I now have a problem about DHCP pool on the same Vlan. The same Vlan (for example: Vlan 5) is built on different interfaces, one is LACP, the other is physical interface. I find that the Vlan5 on these two interfaces requires different DHCP services, and the DHCP pool can not be the same. So how can I set the Vlan DHCP on these two different interfaces to use the same pool?
Title: Re: The same DHCP pool on different interface
Post by: rocketme on July 04, 2018, 10:25:17 AM
Jul 5 00:18:21   dhcpd: exiting.
Jul 5 00:18:21   dhcpd:
Jul 5 00:18:21   dhcpd: process and the information we find helpful for debugging.
Jul 5 00:18:21   dhcpd: before submitting a bug. These pages explain the proper
Jul 5 00:18:21   dhcpd: bugs on either our web page at www.isc.org or in the README file
Jul 5 00:18:21   dhcpd: than a configuration issue please read the section on submitting
Jul 5 00:18:21   dhcpd: If you think you have received this message due to a bug rather
Jul 5 00:18:21   dhcpd:
Jul 5 00:18:21   dhcpd: Configuration file errors encountered -- exiting
Jul 5 00:18:21   dhcpd: ^
Jul 5 00:18:21   dhcpd: range 10.0.5.60 10.0.5.69;
Jul 5 00:18:21   dhcpd: /etc/dhcpd.conf line 27: lease 10.0.5.69 is declared twice!
Jul 5 00:18:21   dhcpd: ^
Jul 5 00:18:21   dhcpd: range 10.0.5.60 10.0.5.69;
Jul 5 00:18:21   dhcpd: /etc/dhcpd.conf line 27: lease 10.0.5.68 is declared twice!
Jul 5 00:18:21   dhcpd: ^
Jul 5 00:18:21   dhcpd: range 10.0.5.60 10.0.5.69;
Jul 5 00:18:21   dhcpd: /etc/dhcpd.conf line 27: lease 10.0.5.67 is declared twice!
Jul 5 00:18:21   dhcpd: ^
Jul 5 00:18:21   dhcpd: range 10.0.5.60 10.0.5.69;
Jul 5 00:18:21   dhcpd: /etc/dhcpd.conf line 27: lease 10.0.5.66 is declared twice!
Jul 5 00:18:21   dhcpd: ^
Jul 5 00:18:21   dhcpd: range 10.0.5.60 10.0.5.69;
Jul 5 00:18:21   dhcpd: /etc/dhcpd.conf line 27: lease 10.0.5.65 is declared twice!
Jul 5 00:18:21   dhcpd: ^
Jul 5 00:18:21   dhcpd: range 10.0.5.60 10.0.5.69;
Jul 5 00:18:21   dhcpd: /etc/dhcpd.conf line 27: lease 10.0.5.64 is declared twice!
Jul 5 00:18:21   dhcpd: ^
Jul 5 00:18:21   dhcpd: range 10.0.5.60 10.0.5.69;
Jul 5 00:18:21   dhcpd: /etc/dhcpd.conf line 27: lease 10.0.5.63 is declared twice!
Jul 5 00:18:21   dhcpd: ^
Jul 5 00:18:21   dhcpd: range 10.0.5.60 10.0.5.69;
Jul 5 00:18:21   dhcpd: /etc/dhcpd.conf line 27: lease 10.0.5.62 is declared twice!
Jul 5 00:18:21   dhcpd: ^
Jul 5 00:18:21   dhcpd: range 10.0.5.60 10.0.5.69;
Jul 5 00:18:21   dhcpd: /etc/dhcpd.conf line 27: lease 10.0.5.61 is declared twice!
Jul 5 00:18:21   dhcpd: ^
Jul 5 00:18:21   dhcpd: range 10.0.5.60 10.0.5.69;
Jul 5 00:18:21   dhcpd: /etc/dhcpd.conf line 27: lease 10.0.5.60 is declared twice!
Jul 5 00:18:21   dhcpd: Warning: subnet 10.0.5.0/24 overlaps subnet 10.0.5.0/24
Jul 5 00:18:21   dhcpd: For info, please visit https://www.isc.org/software/dhcp/
Jul 5 00:18:21   dhcpd: All rights reserved.
Jul 5 00:18:21   dhcpd: Copyright 2004-2018 Internet Systems Consortium.
Jul 5 00:18:21   dhcpd: Internet Systems Consortium DHCP Server 4.3.6-P1
Jul 5 00:18:13   dhcpd: Server starting service.
Jul 5 00:18:13   dhcpd: Sending on Socket/fallback/fallback-net
Jul 5 00:18:13   dhcpd: Sending on BPF/lagg0_vlan5/a0:36:9f:a3:1d:2d/10.0.5.0/24
Jul 5 00:18:13   dhcpd: Listening on BPF/lagg0_vlan5/a0:36:9f:a3:1d:2d/10.0.5.0/24
Jul 5 00:18:13   dhcpd: Sending on BPF/igb0_vlan5/a0:36:9f:a3:1d:2c/10.0.5.0/24
Jul 5 00:18:13   dhcpd: Listening on BPF/igb0_vlan5/a0:36:9f:a3:1d:2c/10.0.5.0/24
Title: Re: The same DHCP pool on different interface
Post by: rocketme on July 04, 2018, 10:31:22 AM
ul 5 00:27:34   dhcpd: Server starting service.
Jul 5 00:27:34   dhcpd: Sending on Socket/fallback/fallback-net
Jul 5 00:27:34   dhcpd: Sending on BPF/lagg0_vlan5/a0:36:9f:a3:1d:2d/10.0.5.0/24
Jul 5 00:27:34   dhcpd: Listening on BPF/lagg0_vlan5/a0:36:9f:a3:1d:2d/10.0.5.0/24
Jul 5 00:27:34   dhcpd: Sending on BPF/igb0_vlan5/a0:36:9f:a3:1d:2c/10.0.5.0/24
Jul 5 00:27:34   dhcpd: Listening on BPF/igb0_vlan5/a0:36:9f:a3:1d:2c/10.0.5.0/24
Jul 5 00:27:34   dhcpd: Multiple interfaces match the same shared network: lagg0_vlan5 igb0_vlan5
Jul 5 00:27:34   dhcpd: Multiple interfaces match the same subnet: lagg0_vlan5 igb0_vlan5
Jul 5 00:27:34   dhcpd: Wrote 1 leases to leases file.
Jul 5 00:27:34   dhcpd: For info, please visit https://www.isc.org/software/dhcp/
Jul 5 00:27:34   dhcpd: All rights reserved.
Jul 5 00:27:34   dhcpd: Copyright 2004-2018 Internet Systems Consortium.
Jul 5 00:27:34   dhcpd: Internet Systems Consortium DHCP Server 4.3.6-P1
Jul 5 00:27:34   dhcpd: PID file: /var/run/dhcpd.pid
Jul 5 00:27:34   dhcpd: Database file: /var/db/dhcpd.leases
Jul 5 00:27:34   dhcpd: Config file: /etc/dhcpd.conf
Jul 5 00:27:34   dhcpd: Warning: subnet 10.0.5.0/24 overlaps subnet 10.0.5.0/24
Jul 5 00:27:34   dhcpd: For info, please visit https://www.isc.org/software/dhcp/
Jul 5 00:27:34   dhcpd: All rights reserved.
Jul 5 00:27:34   dhcpd: Copyright 2004-2018 Internet Systems Consortium.
Jul 5 00:27:34   dhcpd: Internet Systems Consortium DHCP Server 4.3.6-P1





SO.....Different interfaces require different DHCP pools, even if VLAN is the same.
Title: Re: The same DHCP pool on different interface
Post by: kanstin on July 08, 2018, 01:56:54 AM
I think what you want to do is create a bridge from the two interfaces and then assign the new bridge interface to your network. The DHCP pool for the bridge will go across the two interfaces
Title: Re: The same DHCP pool on different interface
Post by: rocketme on July 16, 2018, 02:14:55 PM
Yes, you're right. Thank you.
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