Hi Yogesh

I am asking this for cases like DMVPN, GETVPN where we advertise loopback
interfaces. But if we clear CCIE security, then definitely R & S would be
easier as without knowing R&S, we can't clear CCIE Security :-)

After Security, next is R&S for me....


With regards
Kings

On Mon, Aug 23, 2010 at 3:26 PM, Yogesh Gawankar <[email protected]>wrote:

> Hi kings
>
> yes you are right.By the way have you started studying for R/s track too?
> :)
>
> This sounds more like an R/S question.
>
> Thanks and regards
>
> Yogesh Gawankar
>
>
> --- On *Mon, 8/23/10, Kingsley Charles <[email protected]>*wrote:
>
>
> From: Kingsley Charles <[email protected]>
> Subject: [OSL | CCIE_Security] ip ospf network point-to-point under
> loopback interface with ospf
> To: [email protected]
> Date: Monday, August 23, 2010, 7:22 PM
>
>
> Hi all
>
> Sinppet from
> http://www.cisco.com/en/US/tech/tk365/technologies_q_and_a_item09186a0080094704.shtml#qone
>
> Why are loopbacks advertised as /32 host routes in OSPF?
>
> *A. *Loopbacks are considered host routes in OSPF, and they are advertised
> as /32. For more information, refer to section 9.1 of RFC 
> 2328<http://www.ietf.org/rfc/rfc2328.txt> [image:
> leavingcisco.com]. In Cisco IOS Software Releases 11.3T and 12.0, if the *ip
> ospf network point-to-point* command is configured under loopbacks, OSPF
> advertises the loopback subnet as the actual subnet configured on loopbacks.
> ISDN dialer interface advertises /32 subnet instead of its configured subnet
> mask. This is an expected behavior if *ip ospf network point-to-multipoint
> * is configured.
>
>
>
>
> This statement is applicable only when the loopback address is not
> configured with subnet mask of 255.255.255.255, right?
>
>
>
> With regards
> Kings
>
> -----Inline Attachment Follows-----
>
>
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