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Today's Topics:
1. Re: Using dhcpcd client to fetch vendor specific options
(Darren Ankney)
2. Re: Using dhcpcd client to fetch vendor specific options
(rajeev Gaur)
----------------------------------------------------------------------
Message: 1
Date: Sat, 11 Mar 2023 11:45:09 -0500
From: Darren Ankney <darren.ank...@gmail.com>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: Using dhcpcd client to fetch vendor specific options
Message-ID:
<cakabwhju13jov4gb33hw+tryrhh-9pbweokmmr0nzgbnwpg...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Rje,
If I understand correctly, you are wanting your DHCP client to fetch
option 43 content from the server. There should be a way, in dhcpcd,
to modify option 55 (parameter request list) adding the vendor options
(option 43) to the list of requested parameters. Then the server will
return the option 43 content.
On Sat, Mar 11, 2023 at 2:29?AM rajeev Gaur <rajeev11g...@gmail.com> wrote:
>
> Hello Sir
>
> I am working on a project for fetching various different categories of
> information from dhcp server.
> DHCP Server: ISC DHCP Server 4.4.1
> Client: dhcpcd 9.4.0, Compiled in features: INET ARP ARPing IPv4LL INET6
> DHCPv6 AUTH
> Build environment: Yocto
>
> At this point when I am writing this mail, the basic working looks good.
>
> The DHCP server, starts stops restarts well. In logs I can see the DISCOVER /
> OFFER / REQUEST / ACK all working fine. Lease IP is properly provided to
> client.
>
> #
>
> # DHCP Server Configuration file.
>
> # see /usr/share/doc/dhcp*/dhcpd.conf.sample
>
> #
>
>
>
> authoritative;
>
>
>
> option space Vendor-ONAS-INFO code width 1 length width 1 hash size 5;
>
> option Vendor-ONAS-INFO.ipadd code 1 = ip-address;
>
> option Vendor-ONAS-INFO.port code 9 = unsigned integer 16;
>
>
>
> subnet 192.168.2.0 netmask 255.255.255.0 {
>
> range 192.168.2.35 192.168.2.52;
>
> option routers 192.168.2.56;
>
> option subnet-mask 255.255.255.0;
>
> option domain-name-servers 8.8.8.8;
>
> default-lease-time 100;
>
> max-lease-time 100;
>
> option host-name "OR-SERVER";
>
> option ntp-servers 138.12.56.111;
>
> option vendor-class-identifier "Vendor-ONAS";
>
> vendor-option-space Vendor-ONAS-INFO;
>
> option Vendor-ONAS-INFO.ipadd 192.168.71.50;
>
> option Vendor-ONAS-INFO.port 11372;
>
> }
>
>
> On the client side, dhcpcd, I have kept information to allow and deny
> interfaces, enabled the standard DHCP options for which I am getting values (
> except for dhcp_client_identifier).
> When I am performing ifdown and ifup for eth0 I am getting one leased IP from
> the dhcp server.
>
> #Use the hardware address of the interface for the Client ID
> clientid
> allowinterfaces eth0
> denyinterfaces eth1
>
> option ntp_servers
> option dhcp_server_identifier
> option dhcp_client_identifier (**Not getting this output)
>
> My problem / Query:
> 1) What option to give in dhcpcd.conf to fetch the vendor options that i have
> declared in dhcpd.conf at the server side.
> 2) Do I need to enable any thing on any side (client or server).
>
> I did not see much documentation for dhcpcd client for vendor options.
> I did saw the dhcpcd.conf man page for vendor information but it shows:
> vendor code ,valueAdd an encapsulated vendor option. code should be between 1
> and 254 inclusive. To add a raw vendor string, omit code but keep the comma.
> Examples. Set the vendor option 01 with an IP address.vendor
> 01,192.168.0.2Set the vendor option 02 with a hex code.vendor
> 02,01:02:03:04:05Set the vendor option 03 with an IP address as a
> string.vendor 03,\"192.168.0.2\"Set un-encapsulated vendor option to hello
> world.vendor ,"hello world"
>
> But I don't need to add any vendor option I have to fetch it from the server.
>
> I also tried giving vendorclassid so that it can fetch the details provided
> for the vendor class identifier in the server, but i don't see any output.
>
> I have previously worked with dhclient and i was able to fetch information
> using that and I also see it has much more documentation online. But i see
> less documentation for dhcpcd. But this is the only recommended client for
> Yocto build environment.
>
> Please suggest how can I fetch the vendor options using dhcpcd client.
>
> Thanks
> Rje
> --
> ISC funds the development of this software with paid support subscriptions.
> Contact us at https://www.isc.org/contact/ for more information.
>
> dhcp-users mailing list
> dhcp-users@lists.isc.org
> https://lists.isc.org/mailman/listinfo/dhcp-users
------------------------------
Message: 2
Date: Sun, 12 Mar 2023 01:12:30 +0530
From: rajeev Gaur <rajeev11g...@gmail.com>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: Using dhcpcd client to fetch vendor specific options
Message-ID:
<caky0ne9ffvpbpswbsoer0crunrzhxvxtb0ld7csa8ar3qzf...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Hello Darren and All
Thank you for the response.
Yes you are correct, I need to use dhcp client to fetch vendor options
(option 43) items from DHCP Server.
Ok let me check how can I set option 55 Parameter Request List. But I was
not able to find it in dhcpcd man pages.
Let me search further on net.
Thanks
Rajeev
On Sat, Mar 11, 2023 at 10:15?PM Darren Ankney <darren.ank...@gmail.com>
wrote:
> Rje,
>
> If I understand correctly, you are wanting your DHCP client to fetch
> option 43 content from the server. There should be a way, in dhcpcd,
> to modify option 55 (parameter request list) adding the vendor options
> (option 43) to the list of requested parameters. Then the server will
> return the option 43 content.
>
> On Sat, Mar 11, 2023 at 2:29?AM rajeev Gaur <rajeev11g...@gmail.com>
> wrote:
> >
> > Hello Sir
> >
> > I am working on a project for fetching various different categories of
> information from dhcp server.
> > DHCP Server: ISC DHCP Server 4.4.1
> > Client: dhcpcd 9.4.0, Compiled in features: INET ARP ARPing IPv4LL INET6
> DHCPv6 AUTH
> > Build environment: Yocto
> >
> > At this point when I am writing this mail, the basic working looks good.
> >
> > The DHCP server, starts stops restarts well. In logs I can see the
> DISCOVER / OFFER / REQUEST / ACK all working fine. Lease IP is properly
> provided to client.
> >
> > #
> >
> > # DHCP Server Configuration file.
> >
> > # see /usr/share/doc/dhcp*/dhcpd.conf.sample
> >
> > #
> >
> >
> >
> > authoritative;
> >
> >
> >
> > option space Vendor-ONAS-INFO code width 1 length width 1 hash size 5;
> >
> > option Vendor-ONAS-INFO.ipadd code 1 = ip-address;
> >
> > option Vendor-ONAS-INFO.port code 9 = unsigned integer 16;
> >
> >
> >
> > subnet 192.168.2.0 netmask 255.255.255.0 {
> >
> > range 192.168.2.35 192.168.2.52;
> >
> > option routers 192.168.2.56;
> >
> > option subnet-mask 255.255.255.0;
> >
> > option domain-name-servers 8.8.8.8;
> >
> > default-lease-time 100;
> >
> > max-lease-time 100;
> >
> > option host-name "OR-SERVER";
> >
> > option ntp-servers 138.12.56.111;
> >
> > option vendor-class-identifier "Vendor-ONAS";
> >
> > vendor-option-space Vendor-ONAS-INFO;
> >
> > option Vendor-ONAS-INFO.ipadd 192.168.71.50;
> >
> > option Vendor-ONAS-INFO.port 11372;
> >
> > }
> >
> >
> > On the client side, dhcpcd, I have kept information to allow and deny
> interfaces, enabled the standard DHCP options for which I am getting values
> ( except for dhcp_client_identifier).
> > When I am performing ifdown and ifup for eth0 I am getting one leased IP
> from the dhcp server.
> >
> > #Use the hardware address of the interface for the Client ID
> > clientid
> > allowinterfaces eth0
> > denyinterfaces eth1
> >
> > option ntp_servers
> > option dhcp_server_identifier
> > option dhcp_client_identifier (**Not getting this output)
> >
> > My problem / Query:
> > 1) What option to give in dhcpcd.conf to fetch the vendor options that i
> have declared in dhcpd.conf at the server side.
> > 2) Do I need to enable any thing on any side (client or server).
> >
> > I did not see much documentation for dhcpcd client for vendor options.
> > I did saw the dhcpcd.conf man page for vendor information but it shows:
> > vendor code ,valueAdd an encapsulated vendor option. code should be
> between 1 and 254 inclusive. To add a raw vendor string, omit code but keep
> the comma. Examples. Set the vendor option 01 with an IP address.vendor
> 01,192.168.0.2Set the vendor option 02 with a hex code.vendor
> 02,01:02:03:04:05Set the vendor option 03 with an IP address as a
> string.vendor 03,\"192.168.0.2\"Set un-encapsulated vendor option to hello
> world.vendor ,"hello world"
> >
> > But I don't need to add any vendor option I have to fetch it from the
> server.
> >
> > I also tried giving vendorclassid so that it can fetch the details
> provided for the vendor class identifier in the server, but i don't see any
> output.
> >
> > I have previously worked with dhclient and i was able to fetch
> information using that and I also see it has much more documentation
> online. But i see less documentation for dhcpcd. But this is the only
> recommended client for Yocto build environment.
> >
> > Please suggest how can I fetch the vendor options using dhcpcd client.
> >
> > Thanks
> > Rje
> > --
> > ISC funds the development of this software with paid support
> subscriptions. Contact us at https://www.isc.org/contact/ for more
> information.
> >
> > dhcp-users mailing list
> > dhcp-users@lists.isc.org
> > https://lists.isc.org/mailman/listinfo/dhcp-users
> --
> ISC funds the development of this software with paid support
> subscriptions. Contact us at https://www.isc.org/contact/ for more
> information.
>
> dhcp-users mailing list
> dhcp-users@lists.isc.org
> https://lists.isc.org/mailman/listinfo/dhcp-users
>
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