Multicast Does not work between different VLANS - Page 2

runinorte · ‎11-14-2013

Hi,

I have problems with multicast. On the same VLAN i can see the SAP announcement in VLC and play, but on different VLAN i can see SAP but i cant play it. The play turn to pause and the video doesn´t appear.

I have 2 Cisco 6500 switch CORE with GLBP configured but not working. In the second switch i have all interfaces in shutdown. The first core switch have L3 routing enable.

The Global configurations:

ip multicast-routing.

I have the transmitter PC on vlan 51 i transmit to 230.0.0.50 group an im trying to recive on vlan 80. The vlans configurations are:

Vlan 51

ip address x.x.31.254 255.255.255.0

ip pim sparse-dense-mode

Vlan 80

ip address x.x.80.1 255.255.255.0

ip pim sparse-dense-mode

I have 2 Cisco 2960 (L2 only) for the access.

The principal commands outputs are:

CORE1#show ip mroute | inc 230.0.0.50

(*, 230.0.0.50), 01:50:50/00:02:21, RP 0.0.0.0, flags: DC

CORE1#

CORE 1

interface Vlan1

ip address x.x.1.1 255.255.0.0

ip access-group 101 out

no ip unreachables

ip pim sparse-dense-mode

mls rp ip

interface Vlan51

ip address x.x.31.254 255.255.255.0

ip access-group 151 out

ip helper-address x.x.x.x

no ip unreachables

ip pim sparse-dense-mode

mls rp ip

interface Vlan80

ip address x.x.80.1 255.255.255.0

ip access-group 150 out

no ip unreachables

ip pim sparse-dense-mode

glbp 80 ip x.x.80.254

glbp 80 timers 5 18

glbp 80 timers redirect 600 7200

glbp 80 priority 254

glbp 80 preempt delay minimum 60

glbp 80 authentication text glbpkey

glbp 80 forwarder preempt delay minimum 60

CORE2

interface Vlan1

ip address x.x.1.4 255.255.0.0

ip access-group 101 out

no ip unreachables

ip pim sparse-dense-mode

mls rp ip

interface Vlan51

ip address x.x.31.2 255.255.255.0

ip access-group 151 out

ip helper-address x.x.x.x

no ip unreachables

ip pim sparse-dense-mode

shutdown

mls rp ip

glbp 51 ip x.x.31.254

glbp 51 timers 5 18

glbp 51 timers redirect 600 7200

glbp 51 preempt delay minimum 60

glbp 51 authentication text glbpkey

glbp 51 forwarder preempt delay minimum 60

interface Vlan80

ip address x.x.80.2 255.255.255.0

ip access-group 150 out

no ip unreachables

ip pim sparse-dense-mode

shutdown

mls rp ip

glbp 80 ip x.x.80.254

glbp 80 timers 5 18

glbp 80 timers redirect 600 7200

glbp 80 preempt delay minimum 60

glbp 80 authentication text glbpkey

glbp 80 forwarder preempt delay minimum 60

end

Someone can help?

Thanks,

Alfredo

runinorte · ‎11-15-2013

Hi Jon, now i revert back to dense mode all interfaces.

This is the output for the show ip mroute associate with the multicast stream.

(*, 230.0.0.50), 00:16:21/00:02:43, RP 0.0.0.0, flags: DC

Incoming interface: Null, RPF nbr 0.0.0.0

Outgoing interface list:

Vlan80, Forward/Sparse, 00:16:21/00:02:43

Vlan254, Forward/Sparse-Dense, 00:16:21/00:00:00

I stop all the VLC receivers on vlan 80 an try to connect again but not work.

johnd2310 · ‎11-15-2013

Hi

What client are you using? Windows 7 or XP? Check for client firewall issues and client/server mtu issues. What is the output of the show ip mroute active command when the server is sending the stream? On the 2960 switches the client is connected to what is the ouput of the show ip igmp snoooping groups?

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runinorte · ‎11-15-2013

Hi johnd...

Im using VLC 1.1.2 (i can not update because i have a DVDT2 card to capture the digital terrestrial television and it only work in this version). I have all the firewalls down.

This is the output for the show ip igmp snooping groups on the 2960.

80 230.0.0.50 igmp v2 Gi1/0/21, Gi1/0/24

Port G1/0/21 is where the receiver is conected and the 24port is the trunk.

Jon, i revert and this is the output. I put the ip pim rp-address the same of the lookpback that i create previously.

(*, 230.0.0.50), 00:37:46/00:02:19, RP 192.168.230.230, flags: SJC

Incoming interface: Null, RPF nbr 0.0.0.0

Outgoing interface list:

Vlan80, Forward/Dense, 00:09:52/00:00:00

The strange thing is that I have more than 40 vlans and it only fail in some vlans like 80.

Jon Marshall · ‎11-15-2013

Okay, lets try and break this down logically.

1) pick a vlan where it does work and use vlan 80 for one that doesn't

2) describe exactly where the source of the stream and the client of the stream are for both scenarios. What i mean by this is which switch is the source/client connected to and how is this switch connected back to the core. So for both scenarios ie. one that works and vlan 80 we need the full path in terms of switches etc. between the source and client.

3) post the L3 SVI configs for source/client vlans from the core switches

Jon