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Activity Forums Apple OS X cant see other macs on network – shared not appearing :(

  • cant see other macs on network – shared not appearing :(

    Posted by Elin Grome on May 20, 2011 at 10:26 am

    Hi all,

    I have 2 macs in my office – both connected to a wifi router – sharing is on in both and usually no problem copying files between the two…

    however for the last couple of weeks they cant see each other – nothing appears in ‘shared’ on the left panel of a finder window and i cant connect directly using the ip anddres (afp://192. etc etc)

    can anyone help? never happened before and all sharing settings are set to ‘on’

    It’s all the those pesky details :p

    Elin Grome replied 14 years, 11 months ago 3 Members · 7 Replies
  • 7 Replies
  • Steve Modica

    May 20, 2011 at 12:07 pm

    You should download the bonjour browser and run it. It will show what’s out there broadcasting that it can share. You should see all your macs. If they are not in the same broadcast domain, you won’t see them.
    Steve

    Steve Modica
    CTO, Small Tree Communications

  • Elin Grome

    May 20, 2011 at 2:29 pm

    Hi Steve,

    Thanks for the tip – from Bonjour Browser it seems that we arent on the same broadcast domain – tho’ im not exactly sure what means :s

    I can see my own mac, network printers etc but not my other mac – same goes for other mac – sees everything but me 🙁

    do u have any idea how i remedy this? In the past it all just seemed to happen automatically…

    thanks in advance,

    Elin

    It’s all the those pesky details :p

  • Steve Modica

    May 20, 2011 at 7:35 pm

    First thing would be to try and ping them. (Look at their ip addresses in the pref panel and open a terminal to type “ping “. If that doesn’t work, then bonjour clearly won’t. If it does work, then it may be that sharing is disabled or that the preferences on the finder has sharing off. to ping, you have to broadcast the arp request. So if you can ping, broadcast works.

    Steve

    Steve Modica
    CTO, Small Tree Communications

  • Chris Gordon

    May 21, 2011 at 12:14 pm

    Can you open Terminal and provide the output from “/sbin/ifconfig -a” from both machines. I’m guessing these machines have somehow ended up on different IP subnets. Are they both talking over Wiifi or is one wired and one wireless?

  • Elin Grome

    May 22, 2011 at 4:56 pm

    Hi Chris,

    heres from machine 1

    lo0: flags=8049 mtu 16384
    inet6 ::1 prefixlen 128
    inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
    inet 127.0.0.1 netmask 0xff000000
    inet6 fdf7:9c25:eacc:dd7b:cabc:c8ff:fe99:1182 prefixlen 128
    gif0: flags=8010 mtu 1280
    stf0: flags=0<> mtu 1280
    en0: flags=8863 mtu 1500
    ether c8:bc:c8:99:11:82
    media: autoselect
    status: inactive
    fw0: flags=8863 mtu 4078
    lladdr dc:2b:61:ff:fe:cd:15:c0
    media: autoselect
    status: inactive
    en1: flags=8863 mtu 1500
    ether c8:bc:c8:c1:72:49
    inet6 fe80::cabc:c8ff:fec1:7249%en1 prefixlen 64 scopeid 0x6
    inet 192.168.1.129 netmask 0xffffff00 broadcast 192.168.1.255
    media: autoselect
    status: active
    utun0: flags=8051 mtu 1500
    inet6 fe80::cabc:c8ff:fe99:1182%utun0 prefixlen 64 scopeid 0x7
    inet6 fd00:6587:52d7:c6:cabc:c8ff:fe99:1182 prefixlen 64

    and heres no.2:

    Jesss-iMac:~ Jess$ /sbin/ifconfig -a
    lo0: flags=8049 mtu 16384
    inet6 ::1 prefixlen 128
    inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
    inet 127.0.0.1 netmask 0xff000000
    gif0: flags=8010 mtu 1280
    stf0: flags=0<> mtu 1280
    en0: flags=8863 mtu 1500
    ether d4:9a:20:d0:45:09
    media: autoselect
    status: inactive
    fw0: flags=8863 mtu 4078
    lladdr 04:1e:64:ff:fe:fb:1b:bc
    media: autoselect
    status: inactive
    en1: flags=8863 mtu 1500
    ether 04:1e:64:f0:0c:77
    inet6 fe80::61e:64ff:fef0:c77%en1 prefixlen 64 scopeid 0x6
    inet 192.168.1.131 netmask 0xffffff00 broadcast 192.168.1.255
    media: autoselect
    status: active
    Jesss-iMac:~ Jess$

    have i just opened myself up to some huge security breach? :s

    It’s all the those pesky details :p

  • Chris Gordon

    May 24, 2011 at 1:07 am

    Nothing looked immediately amiss there. I was thinking that they may have IP addresses on different subnets or just have wrong netmasks.

    So let’s try these steps:
    – Reboot each machine (I hate this as it’s sort of a cop out solution since you don’t necessarily find the exact cause, but sometimes the quick fix. You may have already tried this)
    – Reboot the router (which make/model is it anywa
    – As suggested earlier, can each machine ping the other. You can do this from Terminal or from the Network Utility (In/Applications/Utilities).
    – Have you verified that file sharing is indeed turned on/enabled on both machines?

    And, no, you haven’t breached your security by posting that. We just know that you’re using the 192.168.1.0/24 network — along with the vast majority of the world.

  • Elin Grome

    May 30, 2011 at 2:17 pm

    Hi Chris,

    sincere thanks for your time and help – ive learnt something along the way…

    but now I feel truly stoopid; My partner and i realised we hadnt restarted our router for at least a fortnight, so we tried that, and yes, now everything works perfectly ;s

    Yours, sheepishly,

    ELin

    It’s all the those pesky details :p

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