Re: Wi-Fi network can't see Bonjour services on wired network
Re: Wi-Fi network can't see Bonjour services on wired network
- Subject: Re: Wi-Fi network can't see Bonjour services on wired network
- From: Bob DeRosa <email@hidden>
- Date: Tue, 12 Nov 2013 19:31:23 -0500
- Acceptlanguage: en-US
- Thread-topic: Wi-Fi network can't see Bonjour services on wired network
Could the AP be filtering out the Bonjour traffic?
> On Nov 12, 2013, at 7:23 PM, "Robert Davis" <email@hidden> wrote:
>
> Gotcha, if you and the apple device are on the same network then you
> connectivity or forwarding should not be an issue. What type of AP do you
> have?
>
> -- RD
>
>
>
>
>
>> On 11/12/13, 6:21 PM, "Rick Mann" <email@hidden> wrote:
>>
>> As far as I can tell, I’m on the same network. All our devices (wired or
>> wireless) get 10.1.10.0/24 addresses.
>>
>> wifi:
>>
>> en0: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu
>> 1500
>> ether 14:10:9f:e5:04:8f
>> inet6 fe80::1610:9fff:fee5:48f%en0 prefixlen 64 scopeid 0x5
>> inet 10.1.10.203 netmask 0xffffff00 broadcast 10.1.10.255
>> nd6 options=1<PERFORMNUD>
>> media: autoselect
>> status: active
>>
>>
>> wired:
>>
>> en4: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>> options=10b<RXCSUM,TXCSUM,VLAN_HWTAGGING,AV>
>> ether a8:20:66:29:69:01
>> inet6 fe80::aa20:66ff:fe29:6901%en4 prefixlen 64 scopeid 0x4
>> inet 10.1.10.116 netmask 0xffffff00 broadcast 10.1.10.255
>> nd6 options=1<PERFORMNUD>
>> media: autoselect (1000baseT <full-duplex,flow-control>)
>> status: active
>>
>>
>>
>> I’m not familiar enough to know where L2/L3 occur. I don’t think there’s
>> any routing in our APs.
>>
>>> On Nov 12, 2013, at 16:13 , Robert Davis <email@hidden> wrote:
>>>
>>> from:
>>> http://www.cisco.com/image/gif/paws/113443/cuwn-apple-bonjour-dg-00.pdf
>>>
>>>
>>>
>>>
>>> The Bonjour protocol operates on service announcements and service
>>> queries which allow devices to ask and
>>> advertise specific applications, such as:
>>> ? Printing services
>>> ? File sharing services
>>> ? Remote desktop services
>>> ? iTunes file sharing
>>> ? iTunes Wireless iDevice Syncing (in Apple iOS v5.0+)
>>> AirPlay, which offers these streaming services:
>>> ? Music broadcasting in iOS v4.2+
>>> ? Video broadcasting in iOS v4.3+
>>> ? Full screen mirroring in iOS v5.0+ (iPad2, iPhone4S or later)
>>> ?
>>> Each query or advertisement is sent to the Bonjour multicast address
>>> for delivery to all clients on the subnet.
>>> Apples Bonjour protocol relies on Multicast DNS (mDNS) operating at
>>> UDP port 5353 and sends to these
>>> reserved group addresses:
>>> ? IPv4 Group Address - 224.0.0.251
>>> ? IPv6 Group Address - FF02::FB
>>> The addresses used by the Bonjour protocol are link-local multicast
>>> addresses and thus are only forwarded on
>>> the local L2 domain. Routers cannot use multicast routing to redirect
>>> the traffic because the time to live (TTL)
>>> is set to one, and link-local multicast is meant to stay local by
>>> design.
>>>
>>>
>>> Also, Apple likes to use multicast DNS or mDNS with bonjour. A lot of
>>> vendors are having to “fix” this issue to allow enterprise deployments
>>> to use apple. You would figure with as many large schools and hospitals
>>> using apple they would digress from their link-local design.
>>>
>>> Make sure you are on the same network with your apple device (should be
>>> in same subnet) and it should work. Either that or implement PIM or a
>>> bonjour gateway device.
>>>
>>>
>>> -- RD
>>>
>>>
>>>
>>>
>>>> On 11/12/13, 6:08 PM, "Robert Davis" <email@hidden> wrote:
>>>>
>>>> Also, Bonjour is not bcast, it is multicast by nature. Multicast will
>>>> work fine on a local segment, but will not cross layer 3 boundaries
>>>> (routers/firewalls/l3 switch ports). PIM sparse-dense or PIM sparse
>>>> mode
>>>> will help forward multicast traffic between segments.
>>>>
>>>> Keep in mind, MCast is not BCast. Two different animals.
>>>>
>>>> -- RD
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>> On 11/12/13, 6:03 PM, "Bob DeRosa" <email@hidden> wrote:
>>>>>
>>>>> It could be doing DHCP relay without passing the bonjour traffic? Can
>>>>> you sniff the traffic?
>>>>>
>>>>>> On Nov 12, 2013, at 6:48 PM, "Rick Mann" <email@hidden>
>>>>>> wrote:
>>>>>>> On Nov 12, 2013, at 15:40 , Bob DeRosa <email@hidden> wrote:
>>>>>>> Your AP may not be passing the broadcasts through. You may need
>>>>>>> something like this.
>>>>>>>
>>>>>>> http://www.aerohive.com/solutions/technology-behind-solution/bonjour-
>>>>>>> gat
>>>>>>> eway
>>>>>> Wouldn¹t that affect DHCP (if it were not passing broadcasts)?
>>>>>> --
>>>>>> Rick
>>>>>
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>>>>
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>>
>> --
>> Rick
>
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