From: sabrina pittarel (sabri_esame@yahoo.com)
Date: Mon Aug 28 2006 - 12:36:09 ART
Accondig to Cisco documentation an higher number is preferred.
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fipras_r/1rfipadr.htm#wp1018753
(Optional) Preference value. The allowed range is -231 to 231. The default is 0. A higher value increases the preference level of the router. You can modify a particular router so that it will be the preferred router to which other routers will home.
Maybe they fixed it.
Sabrina
----- Original Message ----
From: Sean C <Upp_and_Upp@hotmail.com>
To: sabrina pittarel <sabri_esame@yahoo.com>
Cc: ccielab@groupstudy.com
Sent: Monday, August 28, 2006 5:55:54 AM
Subject: Re: IRDP
Hi Sabrina,
To follow up on Dave's post - check out some stuff I wrote on this before:
http://www.groupstudy.com/archives/ccielab/200411/msg00047.html
But watchout, as Dave mentioned in a separate email, for the router I used
as a client, the irdp preference was flipped.
Sean
----- Original Message -----
From: "Schulz, Dave" <DSchulz@dpsciences.com>
To: "sabrina pittarel" <sabri_esame@yahoo.com>
Cc: <ccielab@groupstudy.com>
Sent: Sunday, August 27, 2006 11:43 PM
Subject: RE: IRDP
> That would be the way to do that, by specifying the irdp on both
> redundant interfaces and using the preference to add priority. It works
> great. Lab it up with a router set up as a client (no ip routing).
> Don't forget to specify "ip gdp irdp" on this router/ws. HTH.
>
>
> Dave Schulz,
> Email: dschulz@dpsciences.com
>
>
>
> -----Original Message-----
> From: sabrina pittarel [mailto:sabri_esame@yahoo.com]
> Sent: Sunday, August 27, 2006 11:23 PM
> To: Schulz, Dave
> Subject: Re: IRDP
>
> Oh,
> I didn't pay attention you can even specify an IP address...that's cool
> so that you can easily support a mixed environment with hosts that have
> their default gateway statically assigned, and hence require
> HSRP/VRRP/GLBP for redundancy, and hosts that can learn it dynamically.
> I'm assuming in this case the advertised address should be the virtual
> address on both routers.
>
> Unfortunately I see there is no way to bind the generation of RDP
> messages with the HSRP/VRRP state. That would have been even cooler, so
> that only the Active router would have generated these messages, as it
> is hosts receive these periodic messages twice (one from each router).
> I wonder if that can create an issue since the host may receive another
> advertisement before the minadvertinterval has elapsed (it'll receive it
> from the other router but I won't be able to realize that).
>
> Sabrina
>
>
>
> ----- Original Message ----
> From: "Schulz, Dave" <DSchulz@dpsciences.com>
> To: sabrina pittarel <sabri_esame@yahoo.com>
> Cc: ccielab@groupstudy.com
> Sent: Sunday, August 27, 2006 6:12:22 PM
> Subject: RE: IRDP
>
> Sabrina -
>
> That should be enough to configure it. However, it is probably best to
> change the max and min advertisement interval so you can get the
> advertisement to send out quicker than the default which is fairly long.
> One other point, you probably want to advertise a preference....an
> interface preference for your router, or, and ip address (if running
> HSRP/VRRP/GLBP)....
>
> - ip irdp preference <preference number>
> - ip irdp ip address x.x.x.x <preference number>
>
> According to the documentation, the lower number is more preferred.
> However, when using this with some IOS routers....this is reversed for
> some odd reason.
>
> HTH,
>
>
> Dave Schulz,
> Email: dschulz@dpsciences.com
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> sabrina pittarel
> Sent: Sunday, August 27, 2006 6:31 PM
> To: ccielab@groupstudy.com
> Subject: IRDP
>
> Hi,
> I'm trying to learn how to configure IRDP.
> According to Cisco documentation I only need to cfg :
>
> ip irdp
>
> in interface cfg mode.
> Is that enough? Do I need to configure any of the following?
>
> holdtime how long a receiver should believe the information
> maxadvertinterval maximum time between advertisements
> minadvertinterval minimum time between advertisements
>
> Sabrina
>
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