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JayCanon's avatar
JayCanon
Aspirant
Oct 17, 2016
Solved

Netgear M4300 is not allowing AirPrint to work on a Copier that has been tested on a test network

We have tested the machine on a test network and it works perfectly so I know it is a setting on their network. I have looked around and i have read that it might be "IGMP Snooping" messing up. Any help on getting AirPrint going would be much appreciated.

10 Replies

  • LaurentMa's avatar
    LaurentMa
    NETGEAR Expert

    Hello JayCanon

     

    Welcome to the Community!

     

    The Bonjour protocol operates on service announcements and service queries which allow devices to ask and advertise specific applications, such as Printing services, with AirPlay (_ipp._tcp.local.).   Unfortunately, IGMP Snooping has very little effect when several VLANs.

     

    Can you let us know the working configuration of your previous test network? Did you have VLANs on the switch, and did you show Clients outside of the Copier VLAN? Or was it a flat network without any VLANs (with the Copier and the Clients all in same L2 broadcast domain, for instance untagged VLAN 1).

     

    In order to help you with your current network issue, we need the summary of your M4300 configuration, do we have VLANs? We will take it from there, based on where the Copier is; and where the Clients are.

     

    Some background with Airprint: with Bonjour, each query or advertisement is sent to the Bonjour multicast address for delivery to all clients on the subnet. Apple’s 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. As a matter of fact, Bonjour doesn't travel across VLANs without the specific help of a <<Bonjour Gateway>>.

     

    Regards,

  • LaurentMa's avatar
    LaurentMa
    NETGEAR Expert
    Hi JayCanon

    Well noted. There must be a configuration issue then for mDNS proper forwarding in that flat network.

    Since I don't want to use you as a troubleshooting platform, please allow us some time for testing.

    But maybe the Community will get back to you earlier. Can anybody share some experience with AirPrint?

    Regards
    • XavierLL's avatar
      XavierLL
      NETGEAR Employee Retired

      HI LaurentMa and JayCom,

       

      I see similar issues in some network deployments when IGMP or other multicasting protocols are enabled , Jaycom as you described that's a flat network I would recommend that you disable IGMP Snooping.

       

      Moreover would be great if you can check that you don't have any Multicast Storm control enabled or any other Multicast protocol like (PIM,MVR,..)

       

      Regards

       

      Xavier Lleixa

      NETGEAR CBU PLM

      • Retired_Member's avatar
        Retired_Member

        Hi All,

            what FW version are you testing? This is because IGMP snooping block the mDNS(bonjour) packets. and we've fixed this issue on 12.0.2.6 on M4300.

           please try the 12.0.2.6 which you can find on support.netgear.com.

        thanks,

        -Adam

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