Hi

griffisg · ‎04-11-2016

We have several wireless medical monitors that we use on our network. The devices require multicast and broadcast to be enabled to communicate with the device control station as well as communicate with each other. We recently upgraded to the 8510 Wireless Controller. I have configured multicast and enabled global broadcasting. However, the devices are not communicating with each other. They are visible to control station. On my older WLC, I was able to verify wireless broadcast was enabled with the sho wireless multi command. That command is no longer valid on the 8510. Any assistance in verifying that wireless broadcasting in enabled would be appreciated.

Rasika Nayanajith · ‎04-11-2016

Hi

Enabling broadcast on your WLC will be significantly impacting your wireless performance. I would not do this in a large network (as this will allow all broadcast traffic come to controller will send to clients over the air, wasting valuable air time)

You can check it using below CLI command.

(WLC) >show network summary

RF-Network Name............................. BUN
DNS Server IP............................... 
Web Mode.................................... Disable
Secure Web Mode............................. Enable
Secure Web Mode Cipher-Option High.......... Disable
Secure Web Mode Cipher-Option SSLv2......... Disable
Secure Web Mode RC4 Cipher Preference....... Disable
Secure Web Mode SSL Protocol................ Disable
OCSP........................................ Disabled
OCSP responder URL.......................... 
Secure Shell (ssh).......................... Enable
Secure Shell (ssh) Cipher-Option High....... Disable
Telnet...................................... Disable
Ethernet Multicast Forwarding............... Enable
Ethernet Broadcast Forwarding............... Disable
IPv4 AP Multicast/Broadcast Mode............ Multicast Address : 239.10.0.200
IPv6 AP Multicast/Broadcast Mode............ Multicast Address : ::

HTH
Rasika

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griffisg · ‎04-12-2016

Looks like multicast and broadcast are enabled. Still no traffic from device to device or from the control station. Will keep searching...

Web Mode.................................... Disable
Secure Web Mode............................. Enable
Secure Web Mode Cipher-Option High.......... Disable
Secure Web Mode Cipher-Option SSLv2......... Disable
Secure Web Mode RC4 Cipher Preference....... Disable
Secure Web Mode SSL Protocol................ Disable
OCSP........................................ Disabled
OCSP responder URL..........................
Secure Shell (ssh).......................... Enable
Telnet...................................... Disable
Ethernet Multicast Forwarding............... Enable
Ethernet Broadcast Forwarding............... Enable
IPv4 AP Multicast/Broadcast Mode............ Multicast Address : 239.239.62.10
IPv6 AP Multicast/Broadcast Mode............ Multicast Address : ::
IGMP snooping............................... Enabled
IGMP timeout................................ 60 seconds
IGMP Query Interval......................... 20 seconds
MLD snooping................................ Disabled
MLD timeout................................. 60 seconds
MLD query interval.......................... 20 seconds

Multicast and Broadcast