leblanc
asked on
multicast
I have 4 devices that send video across my network. and it seems that I have a broadcast storm across all of my VLANs. I have enabled igmp snooping and ip pim dense-mode command. But it does not seem to work. I am not a multicast guy. But any inputs will be greatly appreciated.
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ASKER
The devices that generate video work but it flooded the network and made the network inoperable.
Once again...
Do you have multiple networks or VLANs?
How is the video stream transmitted? (broadcast or multicast)?
What manufacture/model of network equipment is involved?
Do you have multiple networks or VLANs?
How is the video stream transmitted? (broadcast or multicast)?
What manufacture/model of network equipment is involved?
ASKER
Multiple VLANs... vlan 200 is for the video device (blackbox media centro ip mtx). Video is transmitted through multicast.
Once again...
What manufacture/model of network equipment is involved?
What manufacture/model of network equipment is involved?
Sorry... Routers and switches. Manufacture and model please.
ASKER
2960S for the access switches and 3750 series for the core.
Now we're getting somewhere. :-)
Please post the configs of the switches.
I think this may be a spanning-tree issue since what you're describing sounds like a typical broadcast storm.
Please post the configs of the switches.
I think this may be a spanning-tree issue since what you're describing sounds like a typical broadcast storm.
ASKER
Let me ask you this. When I introduce a device that sends out video to a multicast IP address, do I have to configure my switches with multicast routing or any other multicast features?
Only if the sending device and receiving device are on different networks (VLANs).
Switches are layer 2 devices. Routers are layer 3 devices.
Multicast group address is L3 address. So you can understand that a switch in between will need L3 to L2 translation. Hence you need 'something' in switches to configure for multicast.
You already did 'igmp snooping' for that. It's the L2 multicast group mapping to host/port mac mapping service.
But looks like igmp snooping is not working properly (due to misconfig somewhere upstream). Hence you will need to paste configuration for all of your routers and switches.
Best,
Multicast group address is L3 address. So you can understand that a switch in between will need L3 to L2 translation. Hence you need 'something' in switches to configure for multicast.
You already did 'igmp snooping' for that. It's the L2 multicast group mapping to host/port mac mapping service.
But looks like igmp snooping is not working properly (due to misconfig somewhere upstream). Hence you will need to paste configuration for all of your routers and switches.
Best,
ASKER
My client would like to try ip pim sparse-mode. But when she tried to configure the RP, the 6509 does not take the command ip pim rp-address. Any idea?
There is not a lot of multicast config currently on the switch. But from the high level, my client has:
ip routing-multicast
on vlan 200:
ip pim sparse-mode
ip pim rp-address 20.20.20.1 (DID NOT WORK!!!!)
on vlan 10:
ip pim sparse-mode
There is not a lot of multicast config currently on the switch. But from the high level, my client has:
ip routing-multicast
on vlan 200:
ip pim sparse-mode
ip pim rp-address 20.20.20.1 (DID NOT WORK!!!!)
on vlan 10:
ip pim sparse-mode
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This thread won't go anywhere I feel unless you present the complete picture. Bits and pieces of info whatever you are pasting will not help your cause.Yep.
ASKER
Sure, I will get the "big picture" in order. To answer to your questions, spanning tree is running and it is working without any problem. She has the problem when the blackbox is introduced to the network.
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How is the video stream transmitted? (broadcast or multicast)?
What manufacture/model of network equipment is involved?