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Community Member

Multicast ip on WLCs

Hello Experts,

I have 2 wlcs in same Mobility doamin in same subnet.

1. Which ip i can use  as multicast?

2. Can i use same ip on both or it must be different ?

Thanks

3 ACCEPTED SOLUTIONS

Accepted Solutions
VIP Purple

Multicast ip on WLCs

Hi,

IT Tech wrote:

1. Which ip i can use  as multicast?

It is recommended that the address be on the private range (239.0.0.0-239.255.255.255, which does not include 239.0.0.x and 239.128.0.x.).

2. Can i use same ip on both or it must be different ?

No, When AP Multicast mode = Multicast, it is mandatory to use unique Multicast IP per WLC in the WLC Mobility cluster.

Guidelines for Using Multicast Mode:

When you use controllers that run version 4.1 or earlier, you can use the same multicast address on all the controllers. If you use controllers that run version 4.2 or later, the LWAPP multicast group configured on the controllers must be different for each controller used on the network.

Regards

Dont forget to rate helpful posts

VIP Purple

Multicast ip on WLCs

If you are configuring via cLI then you must enter the multicast IP, but via GUI you can change it.

Regards

Dont forget to rate helpful posts

VIP Purple

Multicast ip on WLCs

6 REPLIES
VIP Purple

Multicast ip on WLCs

Hi,

IT Tech wrote:

1. Which ip i can use  as multicast?

It is recommended that the address be on the private range (239.0.0.0-239.255.255.255, which does not include 239.0.0.x and 239.128.0.x.).

2. Can i use same ip on both or it must be different ?

No, When AP Multicast mode = Multicast, it is mandatory to use unique Multicast IP per WLC in the WLC Mobility cluster.

Guidelines for Using Multicast Mode:

When you use controllers that run version 4.1 or earlier, you can use the same multicast address on all the controllers. If you use controllers that run version 4.2 or later, the LWAPP multicast group configured on the controllers must be different for each controller used on the network.

Regards

Dont forget to rate helpful posts

Community Member

Multicast ip on WLCs

Thanks sandeep.

One more question:

How can I delete or unuse this multicast option because I dont want to use it.

VIP Purple

Multicast ip on WLCs

If you are configuring via cLI then you must enter the multicast IP, but via GUI you can change it.

Regards

Dont forget to rate helpful posts

Community Member

Multicast ip on WLCs

Now I got it.

Thanks

VIP Purple

Multicast ip on WLCs

Community Member

Re: Multicast ip on WLCs

Hi,

Regarding the ip add you can use for the multicast on the WLC:

Go to the

Controller tab under the General page and make sure AP Multicast Mode is configured to use

Multicast mode and that a valid group address is configured. The group address is an IPv4 multicast group and is recommended to be in the 239.x.x.x-239.255.255.255 range which is scoped for private multicast applications. Do not use the 224.x.x.x, 239.0.0.x or the 239.128.0.x address ranges for the multicast group address. Addresses in these ranges overlap with the link local MAC addresses and flood all switch ports, even with IGMP snooping enabled

The link for Multicast with the WLC:

http://www.cisco.com/c/en/us/support/docs/wireless-mobility/wireless-lan-wlan/81671-multicast-wlc-lap.html

Link for Bonjour with the Wireless LAN Controllers:

http://www.cisco.com/c/en/us/support/docs/wireless/aironet-1100-series-access-point/113443-cuwn-apple-bonjour-dg-00.html

Thanks and regards,

Manas Pratap Singh.

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