how to execute multiple server(dhcpd) in a single machine using ISCdhcp-4.2.3

Fri Dec 23 13:41:21 UTC 2011

I'm assuming that this server is ONLY going to serve requests forwarded to it from a dhcp relay agent?  If so you want the local-address and local-port statements in your dhcp configuration(s) to listen on specific IP addresses - this will of course preclude dhcpd from responding to broadcast requests, but I can't think of any logical reason why you'd want it to respond to broadcasts at all, when you're running multiple daemons on the same broadcast network/interface in the first place...

====================

Scott Stone <scott_stone at trendmicro.com>

Manager, DCS-RD

Trend Micro, Inc. http://www.trendmicro.com

From: dhcp-users-bounces+scott_stone=trendmicro.com at lists.isc.org [mailto:dhcp-users-bounces+scott_stone=trendmicro.com at lists.isc.org] On Behalf Of ameen.shajahan at wipro.com
Sent: Friday, December 23, 2011 5:26 AM
To: dhcp-users at lists.isc.org
Subject: how to execute multiple server(dhcpd) in a single machine using ISCdhcp-4.2.3

Hi,

                I want to execute multiple server in a machine.

                I am using ISC dhcp-4.2.3 free source code.

                I am executing dhcpd executable in server side.

                So I am using ixp1 interface for this test.

                Since we cant able to run two executable in a single interface I have created one virtual interface like ixp1:1 . It was created also

                But my problem is while executing using virtual interface its throwing an error like Not configured to listen on any interface

                Actually I have added subnet declaration for ixp1:1

                But executing using ixp1 interface , there is no problem. It was executed smoothly.

                I want to know what would be the procedure for executing multiple server in a machine.

                Is there any procedure actually??

                I have added snapshots , please look into that.

                What would be the reason.

                I want to execute multiple server executable in a machine, what would be the procedur.

# ifconfig

ixp0      Link encap:EthernetHWaddr 00:60:43:80:41:92

inet addr:25.1.1.1  Bcast:25.255.255.255  Mask:255.0.0.0

inet6addr: fe80::260:43ff:fe80:4192/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:4767 errors:0 dropped:0 overruns:0 frame:0

          TX packets:3397 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:256

          RX bytes:451824 (441.2 KiB)  TX bytes:677416 (661.5 KiB)

ixp1      Link encap:EthernetHWaddr 00:60:43:80:41:93

inet addr:65.1.1.1  Bcast:65.255.255.255  Mask:255.0.0.0

inet6addr: fe80::260:43ff:fe80:4193/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1504  Metric:1

          RX packets:1251 errors:0 dropped:0 overruns:0 frame:0

          TX packets:590 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:256

          RX bytes:143248 (139.8 KiB)  TX bytes:205548 (200.7 KiB)

ixp1:1    Link encap:EthernetHWaddr 00:60:43:80:41:93

inet addr:75.1.1.1  Bcast:75.255.255.255  Mask:255.0.0.0

          UP BROADCAST RUNNING MULTICAST  MTU:1504  Metric:1

lo        Link encap:Local Loopback

inet addr:127.0.0.1  Mask:255.0.0.0

inet6addr: ::1/128 Scope:Host

          UP LOOPBACK RUNNING  MTU:16436  Metric:1

          RX packets:397 errors:0 dropped:0 overruns:0 frame:0

          TX packets:397 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

          RX bytes:29628 (28.9 KiB)  TX bytes:29628 (28.9 KiB)

..........................................................................................

# ./dhcpd -d -4 -cf /opt/v1/etc/dhcpd.conf ixp1:1                         its throwing an error for ixp1:1

Internet Systems Consortium DHCP Server 4.2.3

For info, please visit https://www.isc.org/software/dhcp/

Wrote 0 class decls to leases file.

Wrote 0 deleted host decls to leases file.

Wrote 0 new dynamic host decls to leases file.

Wrote 1 leases to leases file.

No subnet declaration for ixp1:1 (no IPv4 addresses).

** Ignoring requests on ixp1:1.  If this is not what

you want, please write a subnet declaration

in your dhcpd.conf file for the network segment

to which interface ixp1:1 is attached. **

Not configured to listen on any interfaces!

If you did not get this software from ftp.isc.org, please

get the latest from ftp.isc.org and install that before

requesting help.

If you did get this software from ftp.isc.org and have not

yet read the README, please read it before requesting help.

If you intend to request help from the dhcp-server at isc.org

mailing list, please read the section on the README about

submitting bug reports and requests for help.

Please do not under any circumstances send requests for

help directly to the authors of this software - please

send them to the appropriate mailing list as described in

the README file.

exiting.

#

.............................................................................................

./dhcpd -d -4 -cf /opt/v1/etc/dhcpd.conf ixp1                              its running normallyfor ixp1

Internet Systems Consortium DHCP Server 4.2.3

For info, please visit https://www.isc.org/software/dhcp/

Wrote 0 class decls to leases file.

Wrote 0 deleted host decls to leases file.

Wrote 0 new dynamic host decls to leases file.

Wrote 1 leases to leases file.

Listening on LPF/ixp1/00:60:43:80:41:93/65.1.1.0/24

Sending on   LPF/ixp1/00:60:43:80:41:93/65.1.1.0/24

Sending on   Socket/fallback/fallback-net

My changes in default conf file for different interfaces

subnet 25.1.1.0 netmask 255.255.255.0 {

   option routers 25.1.1.1;                                                 --------------> for ixp0

   range 25.1.1.2 25.1.1.10;

}

subnet 65.1.1.0 netmask 255.255.255.0 {

  option routers 65.1.1.1;

  range 65.1.1.2 65.1.1.10;                                                      --------------> for ixp1

 }

 subnet 75.1.1.0 netmask 255.255.255.0 {

  option routers 75.1.1.1;                                                          ------------à for ixp1:1

  range 75.1.1.2 75.1.1.10;

 }

Regards,

Ameen S

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