Removal from mailing list

denis.alem at bell.ca denis.alem at bell.ca
Wed May 7 15:01:22 UTC 2008


Please, can I be removed from the mailing list
thks

Denis Alem

-----Original Message-----
From: dhcp-users-bounce at isc.org [mailto:dhcp-users-bounce at isc.org] On Behalf Of Corley, Kenneth L (Kenny)
Sent: May 7, 2008 10:56 AM
To: dhcp-users at isc.org
Subject: RE: Address allocation not working correctly

We are not currently using option 82.

The giaddr is always 10.6.0.1 in DHCP Discover for both STB traffic and
data/internet traffic so the DHCP server is allocating from 10.6.0.x
always.  I need it to allocate 10.5.0.x for STBs and 10.6.0.x for
data/internet (ie. PCs).

Do you think using MAC OUI for STB address allocation would work...then
put the scopes for data/internet and voip below in the DHCPd config file
since it is processed from top to bottom?

class "ADB"  {
     match if substring(hardware,1,3) = 00:03:91;     *** ADB is the STB

  }
    pool  {
       range 10.5.0.2 10.5.0.200;
       allow members of "ADB";


# subnet 10.6.0.0/24  Test Data
subnet 10.6.0.0 netmask 255.255.255.0
{
        authoritative;
        option routers 10.6.0.1;
        option broadcast-address 10.6.0.255;
        pool {
                        deny members of "adb3800W-bootloader";
                        deny members of "adb3800W-hlcode";
                        deny members of "adb5810WX-bootloader";
                        deny members of "adb5810WX-hlcode";
                        range 10.6.0.201 10.6.0.225;
        }
}
#
# subnet 10.7.0.0/24  Test Phone
subnet 10.7.0.0 netmask 255.255.255.0
{
        authoritative;
        option routers 10.7.0.1;
        option broadcast-address 10.7.0.255;
        range dynamic-bootp 10.7.0.201 10.7.0.225;
        option tftp-server-name "192.168.22.254";
}

So I basically removed the following from the config:

# subnet 10.5.0.0/24  Test Video
subnet 10.5.0.0 netmask 255.255.255.0
{
        authoritative;
        option routers 10.5.0.1;
        option broadcast-address 10.5.0.255;
        pool {
                range dynamic-bootp 10.5.0.201 10.5.0.225;
                allow members of "adb3800W-bootloader";
                allow members of "adb3800W-hlcode";
                allow members of "adb5810WX-bootloader";
                allow members of "adb5810WX-hlcode";
        }
}

Appreciate your thoughts.

Kenny

-----Original Message-----
From: dhcp-users-bounce at isc.org [mailto:dhcp-users-bounce at isc.org] On
Behalf Of Eric Helm
Sent: Tuesday, May 06, 2008 8:23 PM
To: dhcp-users at isc.org
Subject: Re: Address allocation not working correctly



Corley, Kenneth L (Kenny) wrote:
> Eric,
>
> The Extreme has the following DHCP relay config:
>
> enable bootprelay
> configure bootprelay add 10.100.0.2  (10.100.0.2 is the DHCP server)
> configure ip-down-vlan-action forward
>
> I did notice when looking at the DHCP DISCOVER from Set Top Box going
> from the Extreme to the DHCP server that the bootp flag - relay agent
> IP address - is set to 10.6.0.1.  I assume this is why the DHCP server

> is allocating from the 10.6.0.x subnet?  But I have deny statements
> for the Set Top box class in the data or 10.6.0.x scope.
>
> Would you happen to know how to configure the Extreme to send 10.5.0.1

> in relay agent field of DISCOVER for STBs and send 10.6.0.1 in relay
> agent field of DISCOVER for anything other than STBs (ie.
PCs/laptops)?
>

As far as I know, it cannot be done, but it shouldn't matter with the
dhcp shared-network because it will service both networks regardless if
the giaddr is 10.6.0.1 or 10.5.0.1.

You'll need to make sure your Option 82 classes are accurate and
matching in the dhcpd.conf and that the Extreme is not stripping that
information out of the DHCP packets. By the looks of the Extreme config,
  you'll need to add that line:

configure bootprelay dhcp-agent information policy keep

/Eric




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