Re: ospf p2p network

From: Igor M. (imanassypov@rogers.com)
Date: Thu Sep 18 2008 - 09:24:20 ART


On a p2p ospf network type there is no dr/bdr election, thats the whole point of it. You should think of a DR function - which is to represent its connected broadcast domain as a single node, that way DRothers dont have to form a full mesh but rather neighbor only with the DR. Now on a p2p, there are only two participants, so there is no need for a full-mesh naturally.

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I.M., M.Eng. P.Eng.

Network Architect

CI Investments

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--- On Thu, 9/18/08, Tien <tientien.wang@gmail.com> wrote:
From: Tien <tientien.wang@gmail.com>
Subject: ospf p2p network
To: "Cisco certification" <ccielab@groupstudy.com>
Received: Thursday, September 18, 2008, 3:47 AM

Hi experts,
please help me understand the following configuration,
normally ospf network p2p is for /30, ? is there's anything wrong with this
configuration?
the neighbor peering is up and everything works fine. There's no dr or bdr
election, 10.10.10.3 and 10.10.10.4 is ip for the media converter.
will they get the update as unicast as well?

Thanks

Tien
SW1:
interface FastEthernet1/0/24

 no switchport
 ip address 10.10.10.2 255.255.255.248
 ip access-group 100 out
 ip ospf network point-to-point

SW2:
interface GigabitEthernet1/2

 ip address 10.10.10.1 255.255.255.248
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip ospf network point-to-point

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