DescriptionApple clients do not see the network drives or printers via Bonjour.
ScopeKB ARTICLE TYPE: Troubleshooting
RELATED PRODUCTS: MC 3100, AP 208s, Apple Machine
RELATED SOFTWARE VERSIONS: Firmware: 3.4.2-135,
KEYWORDS: bonjour,multicast,apple devices,iphone,ipad,udp
SolutionApple
clients use Bonjour protocol to discover the network drives. Bonjour is
also known as zero-configuration networking and it enables automatic
discovery of (Bonjour enabled) computers, devices, and services on IP
networks. It is used to automatically discover each other without the
need to enter IP addresses or configure DNS servers. It uses following
protocols for various services:Service Protocol Port
iChat TCP 5297
iChat TCP/UDP 5298
mDNSResponder (Multicast) UDP 5353
STEPS TAKEN FOR TROUBLESHOOTING:
STEP 1: Turned on Multicast in the ESS profile.
GUI : “Configuration” > “ESS” > “Allow Multicast Flag” > On
CLI : meru# configure terminal
meru(config)#essid <essid_name>
meru(config-essid)# multicast-enable
STEP 2 : Added these three ports in the upstream and downstream list.
GUI : “Configuration” > “System Settings” > “UDP Broadcast Up” > “Add” > Add all the port Number
“Configuration” > “System Settings” > “UDP Broadcast Down” > “Add” > Add all the port Number
CLI : meru# configure terminal
meru(config)#ip udp-broadcast upstream 5297
meru(config)#ip udp-broadcast downstream 5297
meru(config)#ip udp-broadcast upstream 5298
meru(config)#ip udp-broadcast downstream 5298
meru(config)#ip udp-broadcast upstream 5353
meru(config)#ip udp-broadcast downstream 5353
RESOLUTION : Apple machines were able to communicate with the resources after these changes in the configuration.
ROOT CAUSE : The ports used for this are not open by default.
Well Known TCP/UDP Ports used by Apple http://support.apple.com/kb/TS1629
