From: Vince Mashburn (cciegroupstudy@gmail.com)
Date: Thu Apr 19 2007 - 16:40:26 ART
I don't see how it could still advertise routes since neighbor relationships
won't be formed with passive interface configured. EIGRP cannot advertise
routes to devices that it does not have neighbor adjacencies to.
On 4/19/07, graham@cisco-engineer.com <graham@cisco-engineer.com> wrote:
>
> Group,
>
>
>
> I am getting some conflicting info from the Doc-CD on the
> Passive-interface
> command;
>
>
>
> http://www.cisco.com/univercd
> <
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cr/hirp_
> r/rte_eih.htm#wp1000250>
> /cc/td/doc/product/software/ios124/124cr/hirp_r/rte_eih.htm#wp1000250
>
>
>
> The link above states
>
>
>
> Configuring the passive-interface command suppresses all incoming and
> outgoing routing updates and hello messages. EIGRP neighbor adjacencies
> cannot be established or maintained over an interface that is configured
> as
> passive. "
>
>
>
> Yet this link;
>
>
>
> http://www.cisco.com/univercd
> <
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cr/hirp_
> r/rte_pih.htm#wp1124419>
> /cc/td/doc/product/software/ios124/124cr/hirp_r/rte_pih.htm#wp1124419
>
>
>
> "Enhanced Interior Gateway Routing Protocol (EIGRP) is disabled on an
> interface that is configured as passive although it advertises the route.
> "
>
>
>
> Perhaps its me being silly, I always believed the first quote was correct
> for EIGRP, and looking at Debugs on a network would make it true, but then
> I
> decided to hub and "ethereal/wireshark" the packets outgoing and saw IP
> protocol 88 being sent (EIGRP)
>
>
>
> Does someone have an authoritative answer on this one?
>
>
>
>
>
> Thanks
>
>
>
> Graham
>
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