Re: ip pim rp-add 'override'

yep i just set it up:

R2 <---> R1

R2:
interface Serial0/0
 ip address 183.1.123.2 255.255.255.0
 ip authentication mode eigrp 100 md5
 ip authentication key-chain eigrp 100 EIGRP
 ip pim sparse-mode
 encapsulation frame-relay
 no ip split-horizon eigrp 100
 clock rate 2000000
 no arp frame-relay
 frame-relay map ip 183.1.123.1 201 broadcast
 frame-relay map ip 183.1.123.3 203 broadcast
 no frame-relay inverse-arp

interface Loopback0
 ip address 100.2.2.2 255.255.255.0
 ip pim sparse-mode
 ip igmp join-group 239.1.1.1
no ip pim dm-fallback
ip pim bsr-candidate Serial0/0 0
ip pim rp-candidate Serial0/0

R2#sh ip pim bsr-router
PIMv2 Bootstrap information
This system is the Bootstrap Router (BSR)
  BSR address: 183.1.123.2 (?)
  Uptime: 00:07:24, BSR Priority: 0, Hash mask length: 0
  Next bootstrap message in 00:00:14
  Candidate RP: 183.1.123.2(Serial0/0)
    Holdtime 150 seconds
    Advertisement interval 60 seconds
    Next advertisement in 00:00:05

R2#sh ip pim rp
Group: 239.1.1.1, RP: 183.1.123.1, v2, uptime 00:04:04, expires 00:02:24

R1:
interface Serial0/0
 ip address 183.1.123.1 255.255.255.0
 ip authentication mode eigrp 100 md5
 ip authentication key-chain eigrp 100 EIGRP
 ip pim sparse-mode
 encapsulation frame-relay
 clock rate 2000000
 no arp frame-relay
 frame-relay map ip 183.1.123.2 102 broadcast
 frame-relay map ip 183.1.123.3 102
 no frame-relay inverse-arp
no ip pim dm-fallback
ip pim bsr-candidate Serial0/0 0
ip pim rp-candidate Serial0/0

R1#sh ip pim bsr-router
PIMv2 Bootstrap information
  BSR address: 183.1.123.2 (?)
  Uptime: 00:03:53, BSR Priority: 0, Hash mask length: 0
  Expires: 00:01:17
This system is a candidate BSR
  Candidate BSR address: 183.1.123.1, priority: 0, hash mask length: 0
  Candidate RP: 183.1.123.1(Serial0/0)
    Holdtime 150 seconds
    Advertisement interval 60 seconds
    Next advertisement in 00:00:25

R1(config)#ip pim rp-address 100.2.2.2
R1(config)#do sh ip pim rp
Group: 239.1.1.1, RP: 183.1.123.1, v2, next RP-reachable in 00:01:00
Group: 224.0.1.40, RP: 100.2.2.2, uptime 00:00:05, expires never

R1(config)#ip pim rp-address 100.2.2.2 override
R1(config)#do sh ip pim rp
Group: 239.1.1.1, RP: 100.2.2.2, uptime 00:00:02, expires never
Group: 224.0.1.40, RP: 100.2.2.2, uptime 00:00:21, expires never

On Tue, Oct 27, 2009 at 3:06 PM, Rick Mur <rmur_at_ipexpert.com> wrote:

> The dynamic methods Auto-RP and BSR are preferred OVER static RP. You would
> use this to configure a static RP as fallback when the dynamic way fails.
>
> If you configure ip pim rp-address without override, Auto-RP and BSR will
> override this. After adding the override, the router will use the
> statically
> configured RP.
>
> This is by the way really easy to test with just 2 routers within 10
> minutes, or even 1 router if you don't have 2 :-)
>
>
>
> --
>
> Regards,
>
> Rick Mur
> CCIE2 #21946 (R&S / Service Provider)
> Sr. Support Engineer IPexpert, Inc.
> URL: http://www.IPexpert.com <http://www.ipexpert.com/>
>
>
> On Tue, Oct 27, 2009 at 12:21 PM, ALL From_NJ <all.from.nj_at_gmail.com>
> wrote:
>
> > Hey team, morning.
> >
> > I do not have time to test this out this morning, but would ask if anyone
> > knows or already has the answer this would be cool.
> >
> > Using the override command, we can tell the router to prefer this static
> > entry over dynamic / auto-rp. Does this also work for BSR? It appears
> so
> > via the docs, but some learning materials I have seen only mention the
> > override option working instead of auto-rp.
> >
> > Any input would be appreciated ... or ...
> >
> > If you have the time, configure two routers, (me like using two routers)
> > ...
> > both with pim, one with BSR and verify that the RP is propagated and
> > accepted by the other router. Then add this command to the other router,
> > ip
> > pim rp-add xyz, first without and then with the override option.
> >
> > I would enjoy hearing your experience. Many TIA,
> >
> > --
> > Andrew Lee Lissitz
> > all.from.nj_at_gmail.com
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
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-- 
Garry L. Baker
"There is no 'patch' for stupidity." - www.sqlsecurity.com
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