OSPF over PPPoE

Unanswered Question
Jul 31st, 2008
User Badges:
  • Gold, 750 points or more

Hi,


I am working on running OSPF over PPPoE, It works fine with DHCP pool with /24 subnet but with negotiation as client is getting /32 ip address its not working because client and server are at different subnets... so what to do to get it resolve?


regards

Devang Patel

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Loading.
Marwan ALshawi Thu, 07/31/2008 - 06:28
User Badges:
  • Purple, 4500 points or more
  • Community Spotlight Award,

    Best Publication, December 2015

u mean u want a client get ip from a dhcp server separated by a router ?


if so


put on the router interface that facing the client the follwoing command


ip dhcp-helper [dhcp server ip addres]


if that not ur requirement post more details


good luck

rate if helpful

devang_etcom Thu, 07/31/2008 - 06:38
User Badges:
  • Gold, 750 points or more

I already have IP address assign from DHCP... I want OSPF running between Client and Server when server assign /32 ip address to client.


regards

Devang Patel

sdoremus33 Thu, 07/31/2008 - 06:49
User Badges:
  • Bronze, 100 points or more

I believe the rule of thiumb is this you cannot adv a /232 from DHCP when the poll is at a /24 net.


lee.reade Thu, 07/31/2008 - 07:18
User Badges:
  • Silver, 250 points or more

Hi Devang,


There is no workaround to have client get an ip address via PPP negotiation, it must get it via dhcp, so that you can specify the netmask.


As you have mentioned, the ospf adj;s will not form if you assign via PPP since the subnet masks are different.


HTH


LR

Actions

This Discussion