From: Gupta, Gopal (NWCC) (gopal.gupta@hp.com)
Date: Fri Nov 16 2007 - 12:51:37 ART
Hi kang,
no these groups will run in sparse mode only and not dense mode i have
labbed it partly.
There should not be any problem in this scenario, i think they have done
right...i havent labbed it completely up yet.
see the 224.0.1.39 <http://224.0.1.39/> and 224.0.1.40
<http://224.0.1.40/> groups are used by RP and MA to forward their
announcements and discovery messages throughout the network right??
now we have these groups in sparse mode right??
so when R2 sends traffic for groups 224.0.1.39 <http://224.0.1.39/> and
224.0.1.40 <http://224.0.1.40/> it can easily move through nbma coz, we
are running these groups in sparse mode now.(here is the point)
it should work as per the solution....might be there is something in
your config...anyway i haven't labbed it yet as i will do it i will tell
you about the results.
Brian : I think i have got the point here but will surely lab it up and
see the results.
Thanks
Gops
________________________________
From: kang lee [mailto:kanghlee@gmail.com]
Sent: Friday, November 16, 2007 21:11
To: Gupta, Gopal (NWCC)
Cc: Brian McGahan; Cisco certification
Subject: Re: auto-rp and default rp placement on IE workbook volume 1
version 4.1
Gupta,
that is what I saw on my lab. I had to ip pim autorp listener. otherwise
224.0.1.39 and 224.0.1.40 traffic is not going down to nbma. it is dense
mode, isn't it?
I reboot all the routers to clear out any possible cache. etc. only
thing worked was ip pim autorp lisner, other than GRE tunnel. some more
clarification might be very helpful.
Thanks.
On Nov 16, 2007 9:34 AM, Gupta, Gopal (NWCC) <gopal.gupta@hp.com> wrote:
Hi Brian,
That's fine, but one question arises what about the groups those
are
actually forwarding multicast traffic for; we don't have RP for
them and
IP pim auto RP listener command has not been entered there for
learning
RP for those groups.
Like we have configured
Ip pim rp address 150.1.2.2 <http://150.1.2.2/> 1
access-list 1 permit 224.0.1.39 <http://224.0.1.39/>
access-list 1 permit 224.0.1.40 <http://224.0.1.40/>
We have assigned RP for only these 2 groups on every Router but
what
about group 224.1.1.1 <http://224.1.1.1/> that SW2 has joined;
we don't have RP for this
group or how shall we learn the RP for this group without either
Sparse-dense mode or ip pim autorp listner.
May be I am missing something here, please clarify..
Thanks
Gops
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
Behalf Of
Brian McGahan
Sent: Friday, November 16, 2007 19:40
To: kang lee; Cisco certification
Subject: Re: auto-rp and default rp placement on IE workbook
volume 1
version 4.1
Importance: Low
You need to force the 224.0.1.39 <http://224.0.1.39/> and
224.0.1.40 <http://224.0.1.40/> groups to be sparse in
order to be forwarded via NBMA mode. To do this you need to
define a
default RP that is used just for those two groups, i.e.:
ip pim rp-address 1.2.3.4 <http://1.2.3.4/> 1
access-list 1 permit 224.0.1.39 <http://224.0.1.39/>
access-list 1 permit 224.0.1.40 <http://224.0.1.40/>
HTH,
Brian McGahan, CCIE #8593 (R&S/SP/Security)
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
<http://www.internetworkexpert.com/>
Toll Free: 877-224-8987 x 705
Outside US: 775-826-4344 x 705
24/7 Support: http://forum.internetworkexpert.com
<http://forum.internetworkexpert.com/>
Live Chat: http://www.internetworkexpert.com/chat/
----- Original Message -----
Subject: auto-rp and default rp placement on IE workbook volume
1
version 4.1
Date: Wed, November 14, 2007 15:31
From: "kang lee" < kanghlee@gmail.com
<mailto:kanghlee@gmail.com> >
> Hi GS,
>
> I am having problem with small lab, auto-rp and default rp
placement
> on IE workbook volume 1 version 4.1. This is asking to place
rp ma and
> ca on
spoke
> node on NBMA. I am having problems with propagating rp
throughout the
> domain. I think this is natural thing bc ip pim nbma-mode will
not
propagate
> dense mode traffic.
>
> Anyone had this problem?
>
> thanks
>
>
This archive was generated by hypermail 2.1.4 : Sat Dec 01 2007 - 06:37:30 ART