From: Jay Hennigan (jay@west.net)
Date: Thu Sep 12 2002 - 21:54:26 GMT-3
On Thu, 12 Sep 2002, Peng Zheng wrote:
> Hi,
>
> I saw this under OSPF FAQ.
>
> Q: Which address-wildmask pair should I use for
> assigning an unnumbered interface to an area?
>
> A: When an unnumbered interface is configured, it
> references another interface on the router. When
> enabling OSPF on the unnumbered interface, use the
> address-wildmask pair of interfaces to which the
> unnumbered interface is pointing.
>
> But I don't understand.
>
>
> for example:
>
> (e0)R1(s0)-----(s0)R2(e0)
>
> Ip of e0 on R1: 1.1.1.1/24
> ip of e0 on R2: 2.2.2.2/24
> IF both s0 use ip unnumber ethernet 0
>
> And if I want to assign s0 of R1 to area 0
>
> Which address/wildmask I should use?
> 2.2.2.2/24?
No. The network statement determines which interfaces local to the
router will participate in OSPF, and in what areas.
Presumably on s0's interface configuration you have something like:
ip unnumbered ethernet 0
You would then use e0's address in the OSPF network statement.
network 1.1.1.0 0.0.0.255 area 0
Similarly, R2 will have in its OSPF router configuration:
network 2.2.2.0 0.0.0.255 area 0
Referencing loopbacks might be a better design if the scenario allows it.
-- Jay Hennigan - CCIE #7880 - Network Administration - jay@west.net NetLojix Communications, Inc. - http://www.netlojix.com/ WestNet: Connecting you to the planet. 805 884-6323
This archive was generated by hypermail 2.1.4 : Mon Oct 07 2002 - 07:43:50 GMT-3