[c-nsp] Multicast Questions - New Setup

Sergio D. sdanelli at gmail.com
Thu Dec 7 17:30:15 EST 2006


Hey Paul,

Here is a good PDF on how to troubleshoot Multicast on Cisco and Juniper
boxes.

http://www.nanog.org/mtg-0302/ppt/caron.pdf


 The layer 2 stuff shouldn' be problem unless you have IGMP snooping turned
on, if not a multicast flow should go out every port.

http://www.cisco.com/warp/public/473/22.html



On 12/7/06, Paul Stewart <pstewart at nexicomgroup.net> wrote:
>
> Hi there...
>
> I've never setup multicast routing before so here goes..;)  This is for
> an Occum device that requires IGMP for it's T1 interfaces for
> clocking....
>
> Layout of devices:
>
> Cisco 6509 (MSFC2)
> Local Occum equipment on VLAN2 (192.168.0.10)
> |
> |
> VLAN104 Lan Extension (10.1.1.1)
> |
> |
> Cisco 6503E (MSFC2) - switching only
> |
> |
> Cisco 2950 Switch - switching only
> |
> |
> Cisco 7206VXR Interface (10.1.1.2)
> |
> |
> Remote Occum equipment (172.16.10.10)
>
>
> The remote equipment 172.16.10.10 needs to talk to local equipment
> 192.168.0.10
>
> The 6503E and 2950 "in the middle" are purely transporting the VLAN on
> layer2
>
> Here's what I have setup so far:
>
> Cisco 6509
>
> ip multicast-routing
>
> interface Vlan2
> description Occum Voice/Management
> ip address 192.168.0.10 255.255.255.128
> ip access-group 104 out
> ip pim dense-mode
>
> interface Vlan104
> description 100 Meg LAN
> ip address 10.1.1.1 255.255.255.248
> ip pim dense-mode
>
>
> Cisco 7206VXR
>
> ip multicast-routing
>
> interface GigabitEthernet0/1
> description 100 Meg
> ip address 10.1.1.2 255.255.255.248
> ip pim dense-mode
> duplex full
> speed 100
> media-type rj45
> no negotiation auto
> no clns route-cache
>
> interface GigabitEthernet0/3
> description Occum Voice/Management
> ip address 172.16.10.10 255.255.255.192
> ip access-group 104 out
> ip pim dense-mode
> duplex full
> speed 1000
> media-type rj45
> no negotiation auto
> no clns route-cache
>
>
>
> As I have said, I'm completely new to multicast/IGMP etc.... so any help
> would be appreciated... I've read some docs etc. but I'm sure something
> is missing in this equation....
>
> I've been reading about Multicast Extensions to OSPF and we use OSPF
> everywhere in our networks pretty much including this link.... would
> this solve my problem?
>
> Thanks, appreciate any responses ;)
>
> Paul
>
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-- 
Sergio Danellli
JNCIE #170


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