17 Responses to “mac network info”

1. 1 dda   — Korea (South) (definitely maybe)
   Jun 27th, 2004 at 10:43 pm

   could you open in your Mac the Terminal app and run ifconfig -a and poste the results?

2. 2 shaky   — Hong Kong (definitely maybe)
   Jun 27th, 2004 at 10:54 pm

   Hmm,

   ipconfig -a
   usage: ipconfig
   where is one of waitall, getifaddr, ifcount, getoption, getpacket, set
   $ man ipconfig
   No manual entry for ipconfig

3. 3 Tom - Daai Tou Laam   — Hong Kong (definitely maybe)
   Jun 28th, 2004 at 8:49 am

   hee hee… ipconfig is the dos command.

   “ifconfig -a” is what you’re looking for.

   You might also try
   “netstat -rn” which should give you the routing table for the machine.

4. 4 dda   — Japan (definitely maybe)
   Jun 28th, 2004 at 1:23 pm

   right, ifconfig, typing too fast, thinking too little…

5. 5 ml   — Hong Kong (definitely maybe)
   Jun 28th, 2004 at 4:46 pm

   Is the MAC on the same subnet as the PC? Same Default Gateway etc?

6. 6 shaky   — Hong Kong (definitely maybe)
   Jun 28th, 2004 at 4:48 pm

   Er, how do I tell that?

7. 7 ml   — Hong Kong (definitely maybe)
   Jun 28th, 2004 at 5:45 pm

   The PC is 192.168.2.102 right?

   And above you wrote this:

   “my IP address is 192.168.100. Fine, ”

   So I’m not sure if you meant that the MAC’s IP is 192.168.2.100 or 192.168.100.something ???

8. 8 shaky   — Hong Kong (definitely maybe)
   Jun 28th, 2004 at 5:47 pm

   PC is 192.168.2.102, Mac is 192.168.2.100

9. 9 ml   — Hong Kong (definitely maybe)
   Jun 28th, 2004 at 5:53 pm

   Just wondering, are you manually setting all this info? It may possibly be better if the router (if it can) just act as a DHCP server?

10. 10 shaky   — Hong Kong (definitely maybe)
    Jun 28th, 2004 at 5:55 pm

    I’m not manually setting anything. I believe the router is acting as the DCHP server.

11. 11 ml   — Hong Kong (definitely maybe)
    Jun 28th, 2004 at 6:05 pm

    I’m not familiar with macs, but there should be a trace route kind of utility

    just type “tr” and see what options there are. It could be “traceroute” or “trcroute”

    once you locate it, see if you can trace a route to the PC.

12. 12 Tom - Daai Tou Laam   — Hong Kong (definitely maybe)
    Jun 29th, 2004 at 10:15 am

    It’ll be “traceroute”.

    And if you do “ifconfig -a” it will tell you the subnet.
    192.168.2.100 255.255.255.0 la dee da
    the 255.255.255.0 is the subnet mask. If it is 255.255.255.0 on one of the machines and 255.0.0.0 on the other, that probably is your source of problems.

    To spot the default gateway
    netstat -rn and look for default in the answer.

    We’ll get shaky up to snuff to do network programming in no time.

13. 13 shaky   — Hong Kong (definitely maybe)
    Jun 29th, 2004 at 12:05 pm

    mac ifconfig -a gives:

    lo0: flags=8049 mtu 16384
    inet6 ::1 prefixlen 128
    inet6 fe80::1 prefixlen 64 scopeid 0×1
    inet 127.0.0.1 netmask 0xff000000
    gif0: flags=8010 mtu 1280
    stf0: flags=0> mtu 1280
    en0: flags=8863 mtu 1500
    inet6 fe80::20d:93ff:fe2c:a794 prefixlen 64 scopeid 0×4
    inet 192.168.2.100 netmask 0xffffff00 broadcast 192.168.2.255
    ether 00:0d:93:2c:a7:94
    media: autoselect (100baseTX ) status: active
    supported media: none autoselect 10baseT/UTP 10baseT/UTP 10baseT/UTP 100baseTX 100baseTX 100baseTX 1000baseTX 1000baseTX 1000baseTX 1000baseTX
    fw0: flags=8822 mtu 4078
    lladdr 00:0d:93:ff:fe:2c:a7:94
    media: autoselect status: inactive
    supported media: autoselect

14. 14 shaky   — Hong Kong (definitely maybe)
    Jun 29th, 2004 at 12:06 pm

    netstat -rn gives:

    Internet:
    Destination Gateway Flags Refs Use Netif Expire
    default 192.168.2.1 UGSc 6 4 en0
    127 127.0.0.1 UCS 0 0 lo0
    127.0.0.1 127.0.0.1 UH 11 12904 lo0
    169.254 link#4 UCS 0 0 en0
    192.168.2 link#4 UCS 3 0 en0
    192.168.2.1 0:e:2e:9:b9:dc UHLW 6 6 en0 1142
    192.168.2.100 127.0.0.1 UHS 3 125 lo0
    192.168.2.102 0:e0:18:ec:38:aa UHLW 2 11 en0 1060
    192.168.2.255 ff:ff:ff:ff:ff:ff UHLWb 0 3 en0

15. 15 shaky   — Hong Kong (definitely maybe)
    Jun 29th, 2004 at 12:29 pm

    255.255.255.0 = 0xffffff00, so the PC and Mac have the same subnet mask.

16. 16 shaky   — Hong Kong (definitely maybe)
    Jun 29th, 2004 at 1:18 pm

    I switched on the firewall in XP so I could check the log. I see:

    2004-06-29 13:10:03 DROP UDP 192.168.2.100 192.168.2.102 138 138 217 - - - - - - -
    2004-06-29 13:10:03 DROP UDP 192.168.2.102 192.168.2.255 137 137 78 - - - - - - -
    2004-06-29 13:10:07 DROP UDP 192.168.2.100 192.168.2.102 138 138 217 - - - - - - -
    2004-06-29 13:10:07 DROP UDP 192.168.2.102 192.168.2.255 137 137 78 - - - - - - -
    2004-06-29 13:10:12 DROP UDP 192.168.2.100 192.168.2.102 138 138 217 - - - - - - -
    2004-06-29 13:10:12 DROP UDP 192.168.2.102 192.168.2.255 137 137 78 - - - - - - -
    2004-06-29 13:10:13 DROP UDP 192.168.2.102 192.168.2.255 137 137 78 - - - - - - -
    2004-06-29 13:10:16 DROP UDP 192.168.2.100 192.168.2.102 137 137 90 - - - - - - -
    2004-06-29 13:10:17 DROP UDP 192.168.2.100 192.168.2.102 137 137 90 - - - - - - -
    2004-06-29 13:10:17 DROP UDP 192.168.2.100 192.168.2.102 137 137 90 - - - - - - -

    So, dropped packets from 192.168.2.100 … i.e. the Mac.

17. 17 zerium   — United States (definitely maybe)
    May 18th, 2005 at 10:25 am

    I’m having the same problems you are having so i feel your pain… really really weird but it sucks bigtime because the mactop (laptop) i have I am supposed to use to test a site… ugh… it used to work fine!

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