From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Wed Sep 01 2004 - 14:08:26 GMT-3
> > (Q1)Guys do we have to use ip pim nbma command on multicast over
frame
> cloud.
> yes, but only on the hub router of the frame-relay cloud, not on
the
> spokes
No it is not required. NBMA mode is simply an optimization of join
processing, leave processing, and transmission of multicast packets over
NBMA.
> > (Q2)Is this command only works with sparse mode or will it works
with
> sparse
> > dese mode too.
> not really necessary to use it for sparse-dense mode
Yes you can use it for sparse-dense mode. It will however only affect
groups running in sparse-mode.
> > (Q3)If you use auto-rp, you need a dense mode component(sparse dense
> mode) for rp candidate to talk to mapping agent. When mapping agent
is
> configured on the hub router(of NBMA) and if RP candidates are
configured
> on the spokes what is the pim mode to configure on the frame cloud(Do
we
> have to create a loopback on the rp candidate and enable sparse-dense
> mode)
> if you are using auto-rp, you will need to use sparse-dense mode over
the
> frame-cloud. You do not have to create a loopback, you can use an
Ethernet
> interface, but you must enable sparse-dense mode on the Ethernet
> interface. If you do create a loopback interface, you should enable
> sparse-dense mode on that interface
You don't necessarily need to run sparse-dense mode with auto-rp. You
can statically define a default RP for the auto-rp groups, or you can
run auto-rp listener.
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> tycampbell@comcast.net
> Sent: Wednesday, September 01, 2004 10:39 AM
> To: mani poopal; ccielab@groupstudy.com
> Subject: Re: ip pim nbma mode/auto rp/dense mode
>
> > (Q1)Guys do we have to use ip pim nbma command on multicast over
frame
> cloud.
> yes, but only on the hub router of the frame-relay cloud, not on
the
> spokes
>
> > (Q2)Is this command only works with sparse mode or will it works
with
> sparse
> > dese mode too.
> not really necessary to use it for sparse-dense mode
>
> > (Q3)If you use auto-rp, you need a dense mode component(sparse dense
> mode) for rp candidate to talk to mapping agent. When mapping agent
is
> configured on the hub router(of NBMA) and if RP candidates are
configured
> on the spokes what is the pim mode to configure on the frame cloud(Do
we
> have to create a loopback on the rp candidate and enable sparse-dense
> mode)
> if you are using auto-rp, you will need to use sparse-dense mode over
the
> frame-cloud. You do not have to create a loopback, you can use an
Ethernet
> interface, but you must enable sparse-dense mode on the Ethernet
> interface. If you do create a loopback interface, you should enable
> sparse-dense mode on that interface
>
> > (Q4.)What is the easiest way do determine that we need static mroute
> command on the multicast routers.
> Watch for the RPF check, make sure that the multicast traffic is
flowing
> in the direction that you want it to.If it is not, then you should use
an
> mroute
>
> HTH! :-)
>
>
>
>
>
>
>
>
>
>
> -------------- Original message --------------
>
> > Hi Group,
> >
> > I am reading Williams Multicast book and has some questions
> >
> > "ip pim nbma mode only support pim sparse mode, and dense mode will
not
> work
> > properly on P2M NBMA networks(Frame Relay)"
> >
> > (Q1)Guys do we have to use ip pim nbma command on multicast over
frame
> cloud.
> > (Q2)Is this command only works with sparse mode or will it works
with
> sparse
> > dese mode too.
> > (Q3)If you use auto-rp, you need a dense mode component(sparse dense
> mode) for
> > rp candidate to talk to mapping agent. When mapping agent is
configured
> on the
> > hub router(of NBMA) and if RP candidates are configured on the
spokes
> what is
> > the pim mode to configure on the frame cloud(Do we have to create a
> loopback on
> > the rp candidate and enable sparse-dense mode)
> > In the above situation, can we configure sparse mode on the frame
> cloud(serial
> > interfaces) and sparse dense mode on the loop back interface of RP
> candidate.
> > (Q4.)What is the easiest way do determine that we need static mroute
> command on
> > the multicast routers.
> >
> > group sorry for long list of questions. Answers from group experts
are
> > appreciated
> >
> > thanks
> >
> > Mani
> >
> >
> > B.ENG,A+,CCNA,CCNP,CCNP-VOICE, CSS1,CNA,MCSE
> > (416)431 9929
> > MANI_CCIE@YAHOO.COM
> >
> > ---------------------------------
> > Do you Yahoo!?
> > Yahoo! Mail - Helps protect you from nasty viruses.
> >
> >
This archive was generated by hypermail 2.1.4 : Fri Oct 01 2004 - 15:00:34 GMT-3