Re: EIGRP with HSRP Question.

From: Johnny Morris <johnnymorris01_at_gmail.com>
Date: Fri, 8 Feb 2013 00:39:16 -0500

This is What Your looking for, HTH

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a00800c2d96.shtml
On Feb 8, 2013 12:29 AM, "JB Poplawski" <jb.poplawski_at_gmail.com> wrote:

> Routing entry for 192.168.0.0/8
> Known via "eigrp 100", distance 170, metric 51456, type external
> Redistributing via eigrp 100
> Last update from 192.168.1.2 on GigabitEthernet0/1, 06:14:27 ago
> Routing Descriptor Blocks:
> * 192.168.1.3, from 192.168.1.3, 06:14:27 ago, via GigabitEthernet0/1
> Route metric is 51456, traffic share count is 1
> Total delay is 1010 microseconds, minimum bandwidth is 100000 Kbit
> Reliability 255/255, minimum MTU 1492 bytes
> Loading 1/255, Hops 1
> 192.168.1.2, from 192.168.1.2, 06:14:27 ago, via GigabitEthernet0/1
> Route metric is 51456, traffic share count is 1
> Total delay is 1010 microseconds, minimum bandwidth is 100000 Kbit
> Reliability 255/255, minimum MTU 1492 bytes
> Loading 1/255, Hops 1
>
>
> On Thu, Feb 7, 2013 at 11:13 PM, marc edwards <renorider_at_gmail.com> wrote:
>
>> Longest prefix match always wins. Remove summary to reveal more
>> specific routes. Could be that simple or as complicated as you want to
>> make it.
>>
>> Regards,
>>
>> Marc
>>
>> On Thu, Feb 7, 2013 at 8:00 PM, JB Poplawski <jb.poplawski_at_gmail.com>
>> wrote:
>> > Both core routers/switches advertise the same subnet. WAN Router sees
>> both
>> > routes, but prefers the higher IP (or so it seems).
>> >
>> > If I had 5 routers, highest IP wins, right? If that's the case, I need
>> to
>> > get my primary HSRP/STP Switch to have the higher IP in the group.
>> >
>> > Trying to avoid any latency or additional hop in this solution.
>> >
>> >
>> > On Thu, Feb 7, 2013 at 9:41 PM, marc edwards <renorider_at_gmail.com>
>> wrote:
>> >>
>> >> Take advertisement off R1 and let it advertise all specific subnets in
>> >> 192.168. Hard to say what without knowing what is attempting to be
>> >> accomplished. When you say Router 2 leads the pack, I assume that this
>> >> is from the view of your WAN router?Again without knowing exactly what
>> >> is trying to be accomplished, if this is for lab or real design makes
>> >> it tough to validate any decisions. But I can guarantee that longest
>> >> prefix match will be the #1 routing selection and easiest to change by
>> >> simply removing R1's summary.
>> >>
>> >> Regards,
>> >>
>> >> Marc
>> >>
>> >> On Thu, Feb 7, 2013 at 4:26 PM, Johnny Morris <
>> johnnymorris01_at_gmail.com>
>> >> wrote:
>> >> > What is your IGP ? You wouldn't necessarily mess with HSRP to
>> influence
>> >> > an
>> >> > outbound route to a neighbor, You can use an offset-list for example
>> >> > with
>> >> > EIGRP on the two routers facing the 3rd router and reference an ACL
>> with
>> >> > the redistributed static route going to your third router. I would
>> look
>> >> > at
>> >> > the metric that is being received from both routers and offset it
>> >> > depending
>> >> > on your IGP or routing protocol. For example of the route was
>> received
>> >> > with
>> >> > the same metric and you had two routes to get to the network you
>> could
>> >> > do
>> >> > the following with eigrp:
>> >> >
>> >> > An example would be
>> >> >
>> >> > R1
>> >> >
>> >> > router eigrp 1
>> >> >
>> >> > red static
>> >> >
>> >> > Offset- list 1 out 132000 INTERFACE
>> >> >
>> >> > access-list 1 p 192.168.0.0
>> >> >
>> >> > ip route 192.168.0.0 255.255.0.0 x.x.x.x
>> >> >
>> >> >
>> >> > R2
>> >> >
>> >> > router eigrp 1
>> >> >
>> >> > red static
>> >> >
>> >> > Offset- list 1 out 132500 INTERFACE
>> >> >
>> >> > access-list 1 p 192.168.0.0
>> >> >
>> >> > ip route 192.168.0.0 255.255.0.0 x.x.x.x
>> >> >
>> >> >
>> >> > Again depends on your routing protocol you are running between the
>> >> > routers,
>> >> > because you mentioned Variance I assume you are running EIGRP.
>> >> >
>> >> >
>> >> > On Feb 7, 2013 6:23 PM, "JB Poplawski" <jb.poplawski_at_gmail.com>
>> wrote:
>> >> >
>> >> >> Good afternoon,
>> >> >>
>> >> >> Have a scenario, it might be nit-picky, but figured I should ask.
>> >> >>
>> >> >> I have two routers running HSRP
>> >> >> HSRP VIP - 192.168.1.1
>> >> >> Router 1 Active - 192.168.1.2
>> >> >> Router 2 Standby - 192.168.1.3
>> >> >>
>> >> >> Both routers are redistributing static for a network summary.
>> >> >> 192.168.0.0/16
>> >> >>
>> >> >> I have an additional WAN router that comes in and is on that same
>> Layer
>> >> >> 3
>> >> >> subnet.
>> >> >>
>> >> >> WAN - 192.168.1.10
>> >> >>
>> >> >> If I do a show ip route 192.168.0.0, I see both routers advertising
>> the
>> >> >> summary, Router 2 is leading the pack for who owns that route. My
>> >> >> Router 1
>> >> >> is both the VIP holder AND STP root, though.
>> >> >>
>> >> >> What am I doing wrong? I assume I can add distance statement and
>> drop
>> >> >> the
>> >> >> standby down a peg or two. Are there any cleaner ways? Drop
>> variance
>> >> >> down?Any help is greatly appreciated.
>> >> >>
>> >> >> Regards,
>> >> >> JB
>> >> >>
>> >> >>
>> >> >> Blogs and organic groups at http://www.ccie.net
>> >> >>
>> >> >>
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Received on Fri Feb 08 2013 - 00:39:16 ART

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