DHCP relay and multiple shared-network statements

[jim]

Not done Juniper but on Cisco have helper on each VLAN interface, then dhcp
server knows which subnet scope from DISCOVER request.

~your Juniper;

 forwarding-options {
      helpers {
          bootp {
              relay-agent-option;
              server 10.100.1.100;
              interface {
                  apn1-interface;
                  apn2-interface;
              }
          }
      }
 }


# Configuration file for ISC dhcpd
#
local-address 10.100.1.100;
ddns-update-style none;
authoritative;

#apn1 subnet scope

       subnet 192.168.220.0 netmask 255.255.255.0 {
               default-lease-time 86400;     # 1 day
               max-lease-time 2592000;       # 1 month

               range 192.168.220.10 192.168.220.50;
       }

#apn2 subnet scope

       subnet 10.124.0.0 netmask 255.255.255.0 {
               default-lease-time 86400;     # 1 day
               max-lease-time 2592000;       # 1 month

               range 10.124.0.1 10.124.0.50;
       }


jim


2010/11/1 Dánial Olsen <DOL at ft.fo>

> That's very helpful.
>
> I'm still not sure what my problem is, but I think I need to have an
> extra look at my Juniper setup and do some comparing.
>
> --
> Dánial
>
>
> > -----Original Message-----
> > From: dhcp-users-bounces+dol=ft.fo at lists.isc.org [mailto:dhcp-users-
> > bounces+dol=ft.fo at lists.isc.org] On Behalf Of Tim Gavin
> > Sent: Monday, November 01, 2010 10:13 PM
> > To: Users of ISC DHCP
> > Subject: Re: DHCP relay and multiple shared-network statements
> >
> > I think I got all the relevant parts, here are my configs. . .
> >
> >
> >
> >
> >
> >
> > On my Juniper:
> >
> > forwarding-options {
> >      helpers {
> >          bootp {
> >              relay-agent-option;
> >              server 172.24.220.158;
> >              interface {
> >                  ge-0/0/2.703;
> >                  ge-0/0/2.283;
> >              }
> >          }
> >      }
> > }
> >
> >
> > interfaces {
> >      ge-0/0/2 {
> >          vlan-tagging;
> >          unit 283 {
> >              description Chelan;
> >              vlan-id 283;
> >              family inet {
> >                  address 10.215.27.1/24;
> >              }
> >          }
> >
> >
> >          unit 703 {
> >              description Douglas;
> >              vlan-id 703;
> >              family inet {
> >                  address 192.168.232.1/23 {
> >                      preferred;
> >                  }
> >              }
> >          }
> >      }
> >
> >
> >
> > /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/
> > \/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
> > /\
> >
> >
> > DHCP Server:
> >
> > #########################
> > #Douglas DHCP - VLAN 703#
> > #########################
> >
> > #$Douglas - vlan 703
> > subnet 192.168.232.0 netmask 255.255.255.0 {
> >    range 192.168.232.3 192.168.232.254;
> >    option domain-name-servers 172.24.220.131, 172.24.220.132;
> >    option domain-name "mydomain.tv";
> >    option routers 192.168.232.1;
> >    option broadcast-address 192.168.232.255;
> >    default-lease-time 43200;     #12 hours
> >    max-lease-time 86400;         #24 hours
> > #  default-lease-time 3600;      #1 hour
> > #  max-lease-time 7200;          #2 hours
> >    authoritative;
> > }
> >
> >
> > ########################
> > #Chelan DHCP - VLAN 283#
> > ########################
> >
> > #$Chelan - vlan 283
> >          subnet 10.215.27.0 netmask 255.255.255.128 {
> >            range 10.215.27.10 10.215.27.120;
> >            option domain-name-servers 172.24.220.131, 172.24.220.132;
> >            option domain-name "mydomain.tv";
> >            option routers 10.215.27.1;
> >            option broadcast-address 10.215.27.127;
> >            default-lease-time 43200;
> >            max-lease-time 86400;
> >            authoritative;
> >          }
> >
> >
> >
> > (Chelan is part of a shared-network statement, but it has nothing to do
> > with this functionality)
> >
> >
> >
> > On 11/01/2010 03:01 PM, Dánial Olsen wrote:
> > > Thanks for the quick response.
> > >
> > > I've tried that (again just now), and without the 10.102.8.x neither
> > > subnet is working - both produce a "wrong network" and DHCPNAK.
> > >
> > > Also tried removing both shared-network statements, same problem.
> > >
> > >
> > > --
> > > Dánial
> > >
> > >
> > >
> > _______________________________________________
> > dhcp-users mailing list
> > dhcp-users at lists.isc.org
> > https://lists.isc.org/mailman/listinfo/dhcp-users
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> dhcp-users mailing list
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