Re: OSPF TTL Security

Recall guys... Some of are actually production engineers and we work in the
real world with real networks.

This is a nice option to be aware of and Cisco Live is in July....

Darby

http://www.darbyslogs.blogspot.com

On Tue, Apr 26, 2011 at 1:38 PM, Steve Di Bias <sdibias_at_gmail.com> wrote:

> Well I guess that's why I didn't know this command then, because I read
> most of the OSPF 12.4T config guide and didn't remember seeing it! Thanks
> Marko!
>
>
> On Tue, Apr 26, 2011 at 10:32 AM, Marko Milivojevic <markom_at_ipexpert.com>wrote:
>
>> I would just like to point out that this is not an option available in
>> the IOS version specified to be in the lab (12.4T). While it's
>> certainly very interesting, at this time students preparing for the
>> CCIE R&S lab need not be concerned with it... Once the IOS is updated
>> to 15.1, yes :-).
>>
>> --
>> Marko Milivojevic - CCIE #18427
>> Senior Technical Instructor - IPexpert
>>
>> FREE CCIE training: http://bit.ly/vLecture
>>
>> Mailto: markom_at_ipexpert.com
>> Telephone: +1.810.326.1444
>> Web: http://www.ipexpert.com/
>>
>> On Tue, Apr 26, 2011 at 09:51, Darby Weaver <darby.weaver_at_gmail.com>
>> wrote:
>> > At your service sir!
>> >
>> > I thought it was noteworthy and often over-looked...
>> >
>> > Know your options.
>> >
>> > Darby
>> >
>> > http://www.darbyslogs.blogpsot.com
>> >
>> > Keep in touch Steve.
>> >
>> >
>> >
>> >
>> >
>> >
>> > On Tue, Apr 26, 2011 at 11:35 AM, Steve Di Bias <sdibias_at_gmail.com>
>> wrote:
>> >
>> >> Wow, I knew BGP implemented a command like this, but had no idea about
>> this
>> >> within OSPF. Thanks!
>> >>
>> >>
>> >> On Tue, Apr 26, 2011 at 8:22 AM, <darby.weaver_at_gmail.com> wrote:
>> >>
>> >>> Anyone want to discuss this topic?
>> >>>
>> >>> ttl-security all-interfaces [hops hop-count]
>> >>>
>> >>> ip ospf ttl-security [hops hop-count | disable]
>> >>>
>> >>>
>> >>>
>> http://www.cisco.com/en/US/docs/ios/iproute_ospf/configuration/guide/iro_ttl.html
>> >>>
>> >>>
>> >>>
>> http://www.cisco.com/en/US/docs/ios/iproute_ospf/command/reference/iro_osp2.html
>> >>>
>> >>>
>> >>>
>> http://www.cisco.com/en/US/docs/ios/ios_xe/iproute_ospf/configuration/guide/iro_ttl_xe.pdf
>> >>>
>> >>>
>> >>> Blogs and organic groups at http://www.ccie.net
>> >>>
>> >>>
>> _______________________________________________________________________
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>> >>>
>> >>>
>> >>>
>> >>>
>> >>>
>> >>>
>> >>>
>> >>>
>> >>
>> >>
>> >> --
>> >> -Steve Di Bias
>> >>
>> >
>> >
>> >
>> > --
>> > Darby Weaver
>> > Network Engineer
>> >
>> >
>> > darbyweaver_at_yahoo.com
>> >
>> >
>> > Blogs and organic groups at http://www.ccie.net
>> >
>> > _______________________________________________________________________
>> > Subscription information may be found at:
>> > http://www.groupstudy.com/list/CCIELab.html
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>>
>
>
>
> --
> -Steve Di Bias
>

-- 
Darby Weaver
Network Engineer
darbyweaver_at_yahoo.com
Blogs and organic groups at http://www.ccie.net