From: Joe Jia (ellenjjl@xxxxxxxxxx)
Date: Thu Apr 04 2002 - 23:28:29 GMT-3
On Page 459,
" The best way to fix this problem is to enable IP PIM NBMA-MODE and move
the mapping Agent function to central site(HUB) network but leave the
Candidate-RP where it is.(Could be at HUB and SPOKEs)."
on Page 460:
" To summarize, the general rule of thumb is that all Auto-RP Mapping Agents
should be configured inside the central site network to prevent problems in
the Auto-RP mechanisms.
On the other hand, if it is necessary to depart from this design and place
an Auto-RP Mapping Agent at one of the remote site networks(Spoke), it will
be necessary to add virtual circuits to the NBMA networks"
Hope it will be helpful.
Joe
----- Original Message -----
From: "D. J. Jones" <meganac@attbi.com>
To: "Joe Jia" <ellenjjl@rogers.com>; "Jason Sinclair"
<sinclairj@powertel.com.au>
Cc: <ccielab@groupstudy.com>
Sent: Thursday, April 04, 2002 8:45 PM
Subject: Re: Urgent multicast question - lab on Monday
> I think it also says that even with pim sparse mode there can be problems
> and
> suggests the use of p2p circuits opposed to a broadcast medium (LIS).
>
> ----- Original Message -----
> From: "Joe Jia" <ellenjjl@rogers.com>
> To: "Jason Sinclair" <sinclairj@powertel.com.au>
> Cc: <ccielab@groupstudy.com>
> Sent: Thursday, April 04, 2002 5:04 PM
> Subject: Re: Urgent multicast question - lab on Monday
>
>
> > On Developing IP Multicast Network, Vol I by Beau Williamson
> >
> > it said on NBMA network, should use:
> >
> > ip pim sparse-mode
> > ip pim nbma-mode
> >
> > otherwise, there will be some problems.
> >
> >
> > ----- Original Message -----
> > From: "Jason Sinclair" <sinclairj@powertel.com.au>
> > To: "'Bob Sinclair'" <bsin@erols.com>; "Jason Sinclair"
> > <sinclairj@powertel.com.au>
> > Cc: <ccielab@groupstudy.com>
> > Sent: Thursday, April 04, 2002 7:27 PM
> > Subject: RE: Urgent multicast question - lab on Monday
> >
> >
> > > Bob,
> > >
> > > It does work OK, however I am trying to do auto-rp over NBMA and for
> > auto-rp
> > > you need sparse-dense. I have looked through the archives and have
found
> > > this question several times, but never an answer. Oh well!!!
> > >
> > >
> > > Cheers,
> > >
> > > Jason Sinclair
> > > Manager, Network Support Group
> > > POWERTEL
> > > Ground Level, 55 Clarence Street,
> > > SYDNEY NSW 2000
> > > AUSTRALIA
> > > office: + 61 2 8264 3820
> > > mobile: + 61 416 105 858
> > > * sinclairj@powertel.com.au
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: Bob Sinclair [mailto:bsin@erols.com]
> > > Sent: Friday, 5 April 2002 10:19
> > > To: Jason Sinclair
> > > Cc: ccielab@groupstudy.com
> > > Subject: Re: Urgent multicast question - lab on
> > > Monday
> > >
> > > Jason,
> > >
> > > There is not a lot of documentation I can find on the ip pim
> > > nbma-mode command. Some of the docs either strongly suggest or demand
> > that
> > > you run sparse-mode. Perhaps it makes a difference that you are using
> > > sparse-dense?
> > >
> > > Have you tried it without that command. It appears to be
> > > optional. I was doing multicast over frame last night without ip pim
> > > nbma-mode, and it appeared to work correctly.
> > >
> > >
> > > -Bob
> > >
> > >
> > > ----- Original Message -----
> > > From: "Jason Sinclair" <sinclairj@powertel.com.au>
> > > To: <ccielab@groupstudy.com>
> > > Sent: Thursday, April 04, 2002 6:27 PM
> > > Subject: Urgent multicast question - lab on Monday
> > >
> > >
> > > > All,
> > > >
> > > > I have the following topology:
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > Router1---------------------router2
> > > > |
> > > > |
> > > > |
> > > > |
> > > > router3
> > > >
> > > > The links are frame relay and I have set the following
> > > configs:
> > > >
> > > >
> > > > Router1
> > > > Ip multicast-routing
> > > > Ip pim send-rp-discovery s 0 sc 255
> > > > Int s0
> > > > Ip pim nbma-mode
> > > > Ip pim sparse-dense-mode
> > > > Int lo0
> > > > Ip pim sparse-dense-mode
> > > > Ip igmp join-group 225.2.2.2
> > > >
> > > > Router2
> > > > Ip multicast-routing
> > > > Ip pim send-rp-announce s 0 sc 255
> > > > Int s0
> > > > Ip pim nbma-mode
> > > > Ip pim sparse-dense-mode
> > > >
> > > > Router3
> > > > Ip multicast-routing
> > > > Int s0
> > > > Ip pim nbma-mode
> > > > Ip pim sparse-dense-mode
> > > >
> > > > All the associated routing is their from a unicast
> > > perspective. My issue is
> > > > that on R1 I can ping the 225.2.2.2 address BUT NOT from
> > > R2. However the RP
> > > > mappings are all fine as below. When I move the C-RP to
> > > (the
> > > > send-rp-announce) to R1 it is OK. Any ideas as I have my
> > > lab on Monday.
> > > >
> > > > R3#show ip pim rp
> > > > Group: 225.2.2.2, RP: 155.1.123.2, v2, v1, uptime
> > > 00:00:07, expires 00:02:52
> > > >
> > > > r3#show ip pim rp map
> > > > PIM Group-to-RP Mappings
> > > >
> > > > Group(s) 224.0.0.0/4
> > > > RP 155.1.123.2 (?), v2v1
> > > > Info source: 155.1.123.1 (?), via Auto-RP
> > > > Uptime: 00:13:47, expires: 00:02:03
> > > >
> > > > r3#show ip mroute
> > > > IP Multicast Routing Table
> > > > Flags: D - Dense, S - Sparse, C - Connected, L - Local, P
> > > - Pruned
> > > > R - RP-bit set, F - Register flag, T - SPT-bit set,
> > > J - Join SPT
> > > > X - Proxy Join Timer Running
> > > > Timers: Uptime/Expires
> > > > Interface state: Interface, Next-Hop or VCD, State/Mode
> > > >
> > > > (*, 224.0.1.39), 00:19:08/00:02:50, RP 0.0.0.0, flags: DJC
> > > > Incoming interface: Null, RPF nbr 0.0.0.0
> > > > Outgoing interface list:
> > > > Serial0, Forward/Sparse-Dense, 00:19:08/00:00:00
> > > >
> > > > (*, 224.0.1.40), 00:19:19/00:00:00, RP 0.0.0.0, flags:
> > > DJCL
> > > > Incoming interface: Null, RPF nbr 0.0.0.0
> > > > Outgoing interface list:
> > > > Serial0, Forward/Sparse-Dense, 00:19:20/00:00:00
> > > >
> > > > (155.1.123.1, 224.0.1.40), 00:18:46/00:02:04, flags: PCLT
> > > > Incoming interface: Serial0, RPF nbr 0.0.0.0
> > > > Outgoing interface list: Null
> > > >
> > > > (*, 225.2.2.2), 00:03:36/00:02:23, RP 155.1.123.2, flags:
> > > SP
> > > > Incoming interface: Serial0, RPF nbr 155.1.123.2
> > > > Outgoing interface list: Null
> > > >
> > > >
> > > >
> > > > Jason Sinclair
> > > > Manager, Network Support Group
> > > > POWERTEL
> > > > Ground Level, 55 Clarence Street,
> > > > SYDNEY NSW 2000
> > > > AUSTRALIA
> > > > office: + 61 2 8264 3820
> > > > mobile: + 61 416 105 858
> > > > * sinclairj@powertel.com.au
> > > >
> > > >
> > > >
> > > >
> > > >
> > > **********************************************************************
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