basic multicast routing

[netadminfhvi]

Hello all,

I have a very basic multicast environment for IP TV, but I cannot manage to make it work.

In order to test the source, I did put a windows host running VLC directly connected to the source and opened the network stream udp://@239.101.10.65. It works perfectly and I can see the TV channel.

Now I need the flows to be routed on a L3 switch to vlan 87, where the IP TV are located.

As my setup is really simple (only one router), I used PIM dense mode.

ip multicast-routing

interface TenGigabitEthernet1/0/40
 no switchport
 ip address 10.1.182.10 255.255.255.248
 ip pim dense-mode

interface Vlan87
 description IPTV
 ip address 10.208.87.1 255.255.255.0
 ip pim dense-mode

However, the host is not getting the flow.

sh ip mroute 239.101.10.65
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, E - Extranet,
       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,
       G - Received BGP C-Mroute, g - Sent BGP C-Mroute,
       N - Received BGP Shared-Tree Prune, n - BGP C-Mroute suppressed,
       Q - Received BGP S-A Route, q - Sent BGP S-A Route,
       V - RD & Vector, v - Vector, p - PIM Joins on route,
       x - VxLAN group, c - PFP-SA cache created entry
Outgoing interface flags: H - Hardware switched, A - Assert winner, p - PIM Join
 Timers: Uptime/Expires
 Interface state: Interface, Next-Hop or VCD, State/Mode

(*, 239.101.10.65), 00:00:19/00:02:40, RP 0.0.0.0, flags: DC
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list:
    TenGigabitEthernet1/0/40, Forward/Dense, 00:00:19/stopped
    Vlan87, Forward/Dense, 00:00:19/stopped

I'm surprized to see Te1/0/40 as outgoing interface instead of incoming interface.

Not sure what is missing here.

Thanks for your help!

Jeremie

[balaji.bandi]

Suggest using "ip pim sparse-dense-mode" rather dense mode.

Do you have any interface that belongs to vlan 87 ?  is the vlan 87up ?

https://www.cisco.com/c/en/us/support/docs/ip/ip-multicast/9356-48.html

[netadminfhvi]

Hello,

yes the catalyst 9500 has an SVI in vlan 87, and the receiver is in this VLAN as well.

IP connecitvity between them is OK in this VLAN (I actualy reach the host remotly)

[balaji.bandi]

Thank you for the information, You only see the information when you try to get video access.

Try from Player to get the video playing? and see the output, as noted, the default TTL is 1, so if the Source is Far you need to increase the TTL to get the video played.

[Harold Ritter]

Hi Jeremie,

What is the TTL value on packets coming from the multicast source?

Regards,

[paul driver]

Hello
It sounds like the version of VLC you may be using, A certain version defaults with a ttl of 1 even if you manually set it higher.