Steve,
I'm working on multicast design a new DoD network. At this level we are a
pretty big network with OC192 pipes. At this level I rather not use any
dense mode type of implementation with my multicast design if possible. Got
too many other protocols to deal with already. I'm currently at C
Thanks for the info Doan
Is this info from experience of large multicast deployment?
What also I was trying to get at is the question of whether with the
enhancement of auto-rp listener is the need for sparse-dense totally negated?
This would be regardless of the overhead issues of using auto-rp
Teflon is correct. If you configure your network to use Auto-RP, then all
of your interfaces will have to use PIM Sparse-Dense Mode. Besides the fact
that Auto-RP uses dense mode for it's control data, if any router looses
connectivity to the RP, then it would fall back to flood-and-prune
Steve Telford wrote:
>
> Regarding PIM Sparse, Dense and Sparse-Dense modes, does anyone
> know why the
> often stated design preference for sparse-dense exists?
I think that the logic is that with sparese-dense, the m-cast network could
continue to function even if the RP were t
Regarding PIM Sparse, Dense and Sparse-Dense modes, does anyone know why the
often stated design preference for sparse-dense exists?
I realise the Auto-RP requirement which is for Dense mode, would mean an
otherwise sparse mode network needs to support dense. Is this the main
driver for sparse
Ken,
PIM messages are sent multicast, either to 224.0.0.2 or 224.0.0.13
depending on the PIM version.
PIM Joins are sent periodically, every 60 seconds.
- Tom
[EMAIL PROTECTED] wrote:
> Hello,
>
> I have two questions here on the above.
>
> Are PIM joins sent multicast or
Hello,
I have two questions here on the above.
Are PIM joins sent multicast or unicast. Some docs says it's unicast, but I
see it as multicast in my trace.
Also, If a flow maintains state for a period of time, do PIM-Join messages
get sent periodically to the RP or root of the source,
Hello,
When is the cmd. ip pim nbma-mode actually used in a frame-relay hub and
spoke topology?
In my testing , I have found out that if the RP happens to be in one of the
spokes say spoke A, then it is needed for the other spoke, spoke B to get to
a multicast group configured on spoke A?
Is
You need to make sure PIM is aware of the underlying FR topology.
use ip pim nbma-mode
this will keep next hop info on (*,G) and (S,G) in OIL at R6 intf S0.
hth,
Mark.
-Original Message-
From: neil K. [mailto:[EMAIL PROTECTED]]
Sent: Sunday, February 16, 2003 11:06 PM
To: [EMAIL
Folks,
I am having problem configuring IP PIM SPARSE_DENSE MODE over a Frame Relay
network.The network looks like
R1(s0)--FR--(S1)R4(S0)--FR---(S0)R6(e0) igmp group
join(224.4.4.4)
R6 has two dlci's configured on physical interface one pointing to R4 and
the Other
Hello,
When I do debug on Multicasting I get the following message:
PIM-BSR: bootstrap on non-RPF path
Does anybody know what it means?
regards
Tarig
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=52541&t=52541
--
F
PIM is a multicast routing protocol.
We have had many discussion at GroupStudy about IGMP and CGMP. Those
protocols allow routers and switches to learn which local ports should
receive multicast streams. In an internetwork, there's more to the story,
however. The routers must also lear
..check this link or other section on the Cisco website..it will give
you an overview of the use of PIM in IP Multicast routing.
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat4000/12_18a/config/mc
astmls.htm
Karl
- Original Message -
From: "kaushalender"
To:
Se
Hi,
PIM stands for Protocol Independent Multicast. Follow this link to read all
about it:
http://www.cisco.com/warp/public/cc/pd/iosw/tech/ipmu_ov.htm
Regards,
Georg
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=35730&
Hello group,
Can somebody tell me what is pim.how it works.Plz give the information
Thanx in advance
kaushalender
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=35702&t=35702
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FAQ, list archives, and subscription info: http:
nt VLANs behind different access switch will use the
>few multicast stream there are.
>how to decide which mode to use PIM DM or PIM SM.
It sounds like dense mode would work for you. The main reason for not using
dense mode doesn't apply in your case. Some people disapprove of dense m
Hi Eve,
To me this sounds like a definite case of PIM Dense-Mode. This is what Cisco
says:
Dense mode PIM is designed for the following conditions:
Senders and receivers are in close proximity to one another.
There are few senders and many receivers.
The volume of multicast traffic is high
multicast stream there are.
how to decide which mode to use PIM DM or PIM SM.
thanks in advance
Eve
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=34307&t=34307
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FAQ, list archives, and subscription in
and below. [Verbosity bit is set]
>
>
> > Hi there!
> >
> > Just a quick answer. First of all thanx for all your replies,
> it's very
> > valuable. In regards to the article about HSRP/PIM problems,
> I have also
> > found that one, but it didn't fit into the
Comments within and below. [Verbosity bit is set]
> Hi there!
>
> Just a quick answer. First of all thanx for all your replies,
it's very
> valuable. In regards to the article about HSRP/PIM problems,
I have also
> found that one, but it didn't fit into the problem (
Hi there!
Just a quick answer. First of all thanx for all your replies, it's very
valuable. In regards to the article about HSRP/PIM problems, I have also
found that one, but it didn't fit into the problem (sadly..).
I'm at home today with no access to the equipment, but I'
Paul,
Peter is running sparse-dense so any mcast group without a configure RP will
be handled using dense mode.
Also we have I dentified that not only PIM is involved hear, OSPF and HSRP
also fails when all three are configured.
Peter,
Assuming the routers have enough resource, check by
It's hard to understand what PIM is, or is not, doing without
seeing full configuration files and show commands for both
routers. You have only listed partial commands, which will not
fully disclose your PIM configurations. There are several
little gotchas in working with Pro
same.
In regards to adjacency's we noticed something interesting, as you can see
below, the pim neighborship is only see'n at the same side as the OSPF stuck
in INIT appears...we're going nuts here in regards to it here at the
office... (should really run off to the christmas party
Peter,
As this problem is "resolved" by removing either PIM or HSRP, it suggests it
may be a resource problem rather than any specific process or ptotocol.
When the OSPF adjacency expires what is the state of HSRP and PIM, i.e do
they still maintain their neighbour relationships?
Hi there!
Well, where should I start...The problem kept on going for the whole day
yesterday (didn't matter if I did reloads of routers) and as I came back
today it was gone... I've tried to get it again but without success (no
change whatsoever of configs except remove/add of ip
Peter,
I have never seen this with PIM, can you provide mem and cpu utilisation
both with and without PIM running?
RB.
Message Posted at:
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FAQ, list archives, and subscript
Hello group!
I've noticed something weird...maybe I'm missing something. Two routers are
connected via a serial connection, both are running OSPF.
As soon as I activate ip pim sparse-dense-mode on both sides, all the OSPF
routes disappear from the routing-table. The neighbor-adjacanc
post your configs
-e-
- Original Message -
From: Matt
To:
Sent: Thursday, July 05, 2001 6:05 PM
Subject: HELP! PIM over GRE over IPSEC [7:11137]
> I want to set multicast traffic through a GRE tunnel so that I don't have
to
> mess with my IPSEC tunnel. In a lab I am tryi
I want to set multicast traffic through a GRE tunnel so that I don't have to
mess with my IPSEC tunnel. In a lab I am trying just the PIM over GRE and I
can't make it work. Any help would be appreciated. Thanks..
Matt
Message Posted at:
http://www.groupstudy.com/form/read.php?f
I have the following question, but I don't understand on the answer:
When is a dense mode PIM interface added to the mulitcast routing table
for a specific group?
A)The interface connects a Catalyst switch. Both the router
interface and the Catalyst are running CGMP
B)The interfa
I don't have a lot of information on this problem but I thought I would
throw it out there and see if anyone has run into this before.
A client is running a multicast application for several of its sites. The
multicast server is located in MA and they are running PIM-SM to NY and SF
Hi,
Now I know which link you were referencing. It is *okay* as a
reference for IP multicast, but there are much better (and
clearer) sources of information. The most important conceptual
thing you need to master before you deal with PIM (in any form)
is to understand the fundamentals of
Here's a really good papaer on Multicast:
http://www.3com.com/nsc/501303.html
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Paul Werner
Sent: Wednesday, January 10, 2001 10:24 PM
To: [EMAIL PROTECTED]
Subject: Re: Subject: PIM shared tree source
Do you have a link to this whitepaper? I could probably
explain all of the information below, but I am curious at to
what this white paper says in detail, before I attempted to try
and explain it.
v/r,
Paul Werner
> Subject: PIM shared tree source tree
>
> this is taken from th
this is taken from there white paper
The following process describes the move from shared tree to source tree in
more detail:
1 Receiver joins a group; leaf Router C sends a Join message toward RP.
2 RP puts link to Router C in its outgoing interface list.
3 Source sends data; Router A encapsula
this is taken from there white paper
The following process describes the move from shared tree to source tree in
more detail:
1 Receiver joins a group; leaf Router C sends a Join message toward RP.
2 RP puts link to Router C in its outgoing interface list.
3 Source sends data; Router A encapsula
The literature I have (BCMSN notes) refers to the PIM Designated Router in a
broadcast environment as having the highest numerical IP address of the
neighbouring routers in the same broadcast environment (same ethernet
segment).
Does anyone know if you can over-ride the IP address on an
Cristina, see http://www.ipmulticast.com/ for all sorts of helpful
references.
Irwin
-Original Message-
From: Cristina Hoselins [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, May 24, 2000 8:06 PM
To: [EMAIL PROTECTED]
Subject: PIM
All,
Would you please explain to me, the main reason why
PIM DM is useful when the senders and receivers are in close proximity,
there are only a few senders, high volume of multicast traffic, and there is
a constant stream of traffic.
PIM SM is useful for sparsely distributed receivers and limited bandwidth.
Sparse doesn't mean that there ar
Dense-mode PIM works best in environments with large multicast groups and a
high likelihood that any given LAN has a group member. Dense-mode would be
appropriate for the multicasting of the CEO's speech, for example, assuming
lots of people want to hear the speech. Sparse-mode is for disp
Use sparse mode if the devices that are being multicasted are distributed
sparsely. Use dense mode otherwise.
Sparse mode have more overhead than dense mode. it is designed for sparsely
distributed multicasted device
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All,
Would you please explain to me, the main reason why you would configure a
router using PIM sparse mode vs PIM dense mode.
Thank you
Cristina
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