From: Jonathan V Hays (jhays@jtan.com)
Date: Mon Nov 17 2003 - 17:58:39 GMT-3
Yes. If you look at the IOS 12.2 Command Reference for this command:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/
fiprmc_r/mult/1rfmult2.htm#1019713
Usage Guidelines
Use this command on Frame Relay, Switched Multimegabit Data Service
(SMDS), or ATM only, especially when these media do not have native
multicast available. Do not use this command on multicast-capable LANs
such as Ethernet or FDDI.
When this command is configured, each Protocol Independent Multicast
(PIM) join message is tracked in the outgoing interface list of a
multicast routing table entry. Therefore, only PIM WAN neighbors that
have joined for the group will get packets sent as data-link unicasts.
This command should only be used when the ip pim sparse-mode command is
configured on the interface. This command is not recommended for LANs
that have natural multicast capabilities.
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
>Behalf Of Nguyen Quang Trung
>Sent: Monday, November 17, 2003 3:26 PM
>To: Kelly, Russell G; kasturi cisco; edward@ceg.co.za; CCIE LAB Group
>Subject: Re: PIM Dense-mode over Frame Relay
>
>
>cisco recommends that PIM sparse mode must be used associate with nbma
>feature ???
>
>ntrung@
>
>----- Original Message -----
>From: "Kelly, Russell G" <Russell_Kelly@eu1.bp.com>
>To: "kasturi cisco" <kasturi_cisco@hotmail.com>; <edward@ceg.co.za>;
><ccielab@groupstudy.com>
>Sent: Monday, November 17, 2003 11:16 PM
>Subject: RE: PIM Dense-mode over Frame Relay
>
>
>> I agree, this is what is happening and configuring ip pim
>nbma-mode on
>> s0/0.2 should fix this. But let us know ;-)...
>>
>> -----Original Message-----
>> From: kasturi cisco [mailto:kasturi_cisco@hotmail.com]
>> Sent: 17 November 2003 15:57
>> To: edward@ceg.co.za; ccielab@groupstudy.com
>> Subject: Re: PIM Dense-mode over Frame Relay
>>
>>
>> Edward,
>>
>> I think what is happening is since R3 does not have a client
>it sends a
>> Prune towards R1 the hub. R1 sees a prune come up and it removes that
>> s0/0.2 interface from OIL. So even if R2 has a reciever it
>wont get the
>> traffic. When u remove the R3 map statement R3 is no longer
>there on the
>> FRelay network and its Prune wont affect R2.So R2 gets it.
>>
>> Try using "ip pim nbma" on the Hub interfaces of s0/0.1 and
>s0/0.2 and
>> see if it works. Beau Wiilaimson had very good explanation on this.
>>
>> HTH. Let us know what u find.
>>
>> Good Luck,
>> Kasturi.
>>
>> >From: "Edward Agostinho" >Reply-To: "Edward Agostinho" >To:
>>Subject:
>> PIM Dense-mode over Frame Relay >Date: Mon, 17 Nov 2003
>16:04:11 +0200 >
>> >Hi Group > >I am simulating a dense mode multicast
>environment with 4
>> routers where a >multicast source is sitting on a frame relay spoke
>> router (R4) which is >configured for point-to-point. The multicast
>> client is on a multipoint frame >relay spoke router (R2) as
>shown below.
>> > > >
>> >(MC)
>E(R2)--------FR----------(R1)-----------FR-----------(R4) (MS) > I
>>
>> >I > F/R > I > I > (R3) > >When I start multicasting, the multicast
>> client receives no multicasts until I >remove the frame
>relay map for R3
>> on R1. > >Why would that be? > >Here is the R1 router configs: > > >!
>> >hostname R1 >! >ip multicast-routing >! >! >interface Loopback0 > ip
>> address 192.168.210.1 255.255.255.0 >! >interface
>FastEthernet0/0 > ip
>> address 192.168.10.1 255.255.255.0 > ip pim dense-mode >! >interface
>> Serial0/0 > no ip address > encapsulation frame-relay > no
>frame-relay
>> inverse-arp >! >interface Serial0/0.1 point-to-point > ip address
>> 192.168.14.1 255.255.255.0 <---------- to R4 > ip pim dense-mode >
>> frame-relay interface-dlci 154 >! >interface Serial0/0.2
>multipoint > ip
>> address 192.168.123.1 255.255.255.0 > ip pim dense-mode > frame-relay
>> map ip 192.168.123.3 153 broadcast <------------ to R3 >
>frame-relay map
>> ip 192.168.123.2 152 broadcast <------------ to R2 >! > > >Thanks >
>> >Edward
>> >
>>
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