From: Koen Zeilstra (koen@koenzeilstra.com)
Date: Mon May 22 2006 - 06:54:24 ART
Gianpietro,
Auto-rp uses DM. However if all the multicast routers are directly
connected to the mapping agent. It WILL work. Make sure the mapping agent
is the hub router. The RP can be located somewhere else.
Multicast packets on a local subnet always find the destionation as long
as no routing is involved.
regards,
Koen Zeilstra
-----------------------
Q: How did you get into artificial intelligence?
A: Seemed logical -- I didn't have any real intelligence.
On Sat, 20 May 2006, Gianpietro Lavado wrote:
| George,
|
| Auto-RP uses groups 224.0.1.39 and .40 for the RP & mapping agent
| announces, but this groups work only on dense mode. If you are restricted
| to use sparse mode only, you can use the 'ip pim auto-rp listener' command
| on every router (which activates dense-mode for this two groups only) or
| else you can use BSR.
|
| Also since you are working on a FR hub&spoke network, be careful with
| multicast traffic between the spokes not getting through the spokes; if you
| have this problem you should use nbma-mode on the hub.
|
| Regards
|
| Gianpietro
|
|
| On 5/20/06, george stanza <cert2006@gmail.com> wrote:
| >
| > thats right..
| > i used send-rp-announce and rp-discover/rp-filter commands as follows on
| > the
| > hub..
| >
| > ip pim send-rp-announce Loopback0 scope 16 group-list 55
| > ip pim send-rp-discovery Loopback0 scope 16
| > ip pim rp-announce-filter rp-list 23 group-list 55
| > !
| > access-list 23 permit 4.4.5.5
| > access-list 55 permit 224.1.1.1
| >
| >
| > One spoke router has an ethernet interface joining 224.1.1.1 but the
| > spokes
| > dont have their mroute tables populated..Any idea whats going on..
| >
| > r2#sh ip mroute 224.1.1.1
| > Group 224.1.1.1 not found
| >
| > r2#sh ip mroute
| > IP Multicast Routing Table
| > Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C -
| > Connected,
| > L - Local, P - Pruned, R - RP-bit set, F - Register flag,
| > T - SPT-bit set, J - Join SPT, M - MSDP created entry,
| > X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
| > U - URD, I - Received Source Specific Host Report,
| > Z - Multicast Tunnel, z - MDT-data group sender,
| > Y - Joined MDT-data group, y - Sending to MDT-data group
| > Outgoing interface flags: H - Hardware switched, A - Assert winner
| > Timers: Uptime/Expires
| > Interface state: Interface, Next-Hop or VCD, State/Mode
| >
| > (*, 224.0.1.39), 00:02:16/stopped, RP 0.0.0.0, flags: DP
| > Incoming interface: Null, RPF nbr 0.0.0.0
| > Outgoing interface list: Null
| >
| > (4.4.5.5, 224.0.1.39), 00:02:01/00:00:58, flags: PT
| > Incoming interface: Serial2/2, RPF nbr 4.4.245.5
| > Outgoing interface list: Null
| >
| > (*, 224.0.1.40), 00:02:20/stopped, RP 0.0.0.0, flags: DPL
| > Incoming interface: Null, RPF nbr 0.0.0.0
| > Outgoing interface list: Null
| >
| > (4.4.5.5, 224.0.1.40), 00:01:35/00:02:32, flags: PLT
| > Incoming interface: Serial2/2, RPF nbr 4.4.245.5
| > Outgoing interface list: Null
| >
| >
| >
| >
| >
| > On 5/20/06, Petr Lapukhov <petrsoft@gmail.com> wrote:
| > >
| > > You mean, without configuring static RP on any router? :)
| > >
| > > 2006/5/20, george stanza <cert2006@gmail.com>:
| > > >
| > > > group,
| > >
| > > i am puzzled with a little question here which says to configure a
| > > sparse-mode on a frame-relay without using the RP on any of the
| > routers..
| > > I,
| > > so, used the rp-discover and rp-announce commands, but then the
| > multicast
| > > groups wont form. The mroute database shows empty.. Any examples of
| > this..
| > >
| > > //G
| > >
| > > _______________________________________________________________________
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| >
| > _______________________________________________________________________
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