Multicast

[Bbould1234]

Hi,

Im wanting to configure multicast routing for CCTV cameras.

I have a cisco 9300, Layer 2 switches, CCTV Cameras and Edge recorders.

CCTV is on vlan 128

Switch Management and Recorder is on vlan 101.

I have IGMP Snooping enables on all layer 2 switches.

How do I proceed to configure multicast from CCTV cameras to Edge recorder through the cisco 9300.

Thanks.

[Georg Pauwen]

Hello,

post the running configuration of the 9300 with what you have so far, or follow the guide linked below...

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9300/software/release/16-6/configuration_guide/ip_mcast_rtng/b_166_ip_mcast_rtng_9300_cg/configuring_basic_ip___multicast_routing.html

[Bbould1234]

Thankyou for your input.

I haven't made much configuration changes in regards to Multicast, except that I have enabled IP multicast routing.

I have some additional information on the network, I need VLAN's 128-136 all pointing to the edge recorder. 

Am I right in saying that I need to use: sparse-dense-mode and create groups to point towards the edge recorder.

I have very basic knowledge of implementing multicasting.

[Georg Pauwen]

Hello,

you are on the right track. If everything is connected to the same switch, all you need is to globally enable 'ip multicast-routing' and then enable 'ip pim sparse-dense-mode' on all participating interfaces.

[Bbould1234]

We have a 9300 situated at the top of our network design, We have 10G fibre optics between the 9300 and a 24 port switch. This is our main access layer switch, we have multiple 24 connected to this via ethernet ports running CCTV.

Do i need to enter the command ip-sparse-dense-mode on the router? only options I have are:

IP PIM Sparse or IP PIM SSM.

Thanks

[Georg Pauwen]

Hello,

the 9300 is used as the router ? It might be better if you draw out your topology (post a schematic drawing showing all devices, how they are connected, and where the multicast source and receivers are located). If sparse mode is all that is supported, multicast traffic is not flooded, but you need to configure an RP (Rendez-Vous Point).

[Bbould1234]

Yes the 9300 is used as a router. I used the no switchport command on interface, and am able to use the the IP PIM sparse-dense-mode command but this has caused all interface VLAN's to shutdown.

TenGigabitEthernet1/1/1
no switchport
no ip address
ip pim sparse-dense-mode

I will draw up a quick schematic now.

Thanks

[balaji.bandi]

You need to enable PIM on layer3 interface like example VLAN

interface VlanX
 ip pim sparse-dense-mode

Follow some guide lines

https://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/68131-cat-multicast-prob.html

still having issue post complete show run output (also let us know what IOS XE version running on Cat 9300)

[Bbould1234]

I have simplified the network but its possibly twice as big. Each location has the same hardware just different VLANS.

VLAN 121-123 has 20 + CCTV on each device which need to point the recorder (VLAN 101) in Location A.