Re: HSRP..Standby routers should not know Standby address !

Good info!
Never did I not configure the standby ip on both routers, so I never knew.

-----Original Message-----
From: Cisco League <ciscoleague_at_googlemail.com>

Date: Mon, 10 Aug 2009 20:51:24
To: Cisco certification<ccielab_at_groupstudy.com>
Subject: Re: HSRP..Standby routers should not know Standby address !

guys dont get confused...

"The standby routers should not learn the standby address."

The task is asking for configuration such that the standby IP is not learnt
dynamicaly. All this means is to configure the standby IP address on both
the active and standby router manually. Normaly if you configure the standby
IP on one router the other router in the same HSRP group will learn it
dynamically.

Sorted!

Cheers!

On Mon, Aug 10, 2009 at 8:46 PM, Divin Mathew John <divinjohn_at_gmail.com>wrote:

> How would that help? U mean to say... u have R1(10.1.1.1)----R2(10.1.1.2)
> and Standby IP 10.1.1.100 ..now if we make R1 the active router for the
> HSRP Group. and say Authentication is ON.. wont R2 know wht standby
> Address is?? will be pre-shared key help in mitigating a security risk of a
> R3 (a thrid alien router) coming into the Ethernet segment and preempting
> the current active router R1. ?
>
> On Tue, Aug 11, 2009 at 12:16 AM, Mohamed El Henawy <m.henawy_at_link.net
> >wrote:
>
> > Thanks a lot..clear now :)
> >
> > ----- Original Message -----
> > From: kaushalccie patel
> > To: Mohamed El Henawy
> > Cc: Cisco certification
> > Sent: Monday, August 10, 2009 9:19 PM
> > Subject: Re: HSRP..Standby routers should not know Standby address !
> >
> >
> > This may help....
> >
> >
> > Authentication
> > The HSRP authentication feature consists of a shared clear-text key
> > contained within the HSRP packets. This feature prevents the lower
> priority
> > router from learning the standby IP address and standby timer values from
> > the
> > higher priority router.
> >
> > To configure the HSRP authentication string, use the standby
> > authentication
> > string command.
> >
> >
> >
> >
> >
> http://www.cisco.com/en/US/tech/tk648/tk362/technologies_tech_note09186a008
> > 0094a91.shtml<
> http://www.cisco.com/en/US/tech/tk648/tk362/technologies_tech_note09186a008%0A0094a91.shtml
> >
> >
> >
> > -Kaushal
> >
> >
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Received on Tue Aug 11 2009 - 11:46:51 ART