RE: Can't ping myself.

[Rai Ou]

Title: メッセージ

Thanks my friends, I got a lot of suggestions.   At the first, let me say why I am doing this stupid (maybe?) thing that pinging my Linux box itself. I am using it as my getway to internet, and running it as the Firewall and the Webserver too. And,  I have only 1 dynamic ip so I am running iptables at this box too for share the internet to the interal machines (Windows, Unix, and Linx ......). So, as you see I have 2 Lan cards.   But, as I said before, because it can not pint itself, I found I am in troubles with this problems : 1. The Samba server can not be run well. 2. The Tomcat Server can not be stop (it will be pendding when stop). 3. Some network applications I wrote can not be run well.   Now, as Mr.Edward Dekkers's suggestion, I stoped the iptables service: ----------------------------- service iptables stop ----------------------------- and then I found it  CAN ping itself now and my 3 problems are FIXED !   I am happy for know the reson but I still want to cry bsz. I have to down my iptables firewall now and I can't use the ip-masqurade and can't share the internet to the other machines ......   Any other good idea ?   Thanks alot!   Lei   -----Original Message----- From: manjunath [mailto:[EMAIL PROTECTED]] Sent: Friday, February 07, 2003 10:44 PM To: [EMAIL PROTECTED] Subject: Re: Can't ping myself.   :) Yes you are right.. it is not that high even if you are on a local network..   ----- Original Message ----- From: Burke, Thomas G. To: '[EMAIL PROTECTED]' Sent: Friday, February 07, 2003 7:03 PM Subject: RE: Can't ping myself. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 18000 collisions is high if there's only one or two machines on the internal net, but if you have more than that, & they're all active, then it is not all that many...  I find it hard to believe that a bad card would only manifest itself as collisions... - -----Original Message----- From: manjunath [mailto:[EMAIL PROTECTED]] Sent: Friday, February 07, 2003 5:33 AM To: [EMAIL PROTECTED] Subject: Re: Can't ping myself. As you see , 192.168.0.1  Card has lot of collisions on its interface .. What i suggest is, takeout this card, switch on the box.  Kudzu will ask you to remove it, hence remove the card. Power off, and insert the card again, and  configure the card once again. If the problem continues, you got to replace this card..   BTB when you are pinging is it saying  " Destination host unreachable " bla bla ,,       Thanx 'n Regards   Manjunth Hegde - ----- Original Message ----- From: Rai Ou To: '[EMAIL PROTECTED]' Sent: Friday, February 07, 2003 3:21 PM Subject: RE: Can't ping myself. The output is :   eth0      Link encap:Ethernet  HWaddr 00:90:CC:08:3F:9E           inet addr:219.105.101.197  Bcast:255.255.255.255 Mask:255.255.255.0           UP BROADCAST NOTRAILERS RUNNING  MTU:1500  Metric:1           RX packets:1304172 errors:0 dropped:0 overruns:0 frame:0           TX packets:536135 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 txqueuelen:100           Interrupt:5 Base address:0xe400   eth1      Link encap:Ethernet  HWaddr 00:90:CC:41:59:13           inet addr:192.168.0.1  Bcast:192.168.0.255 Mask:255.255.255.0           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1           RX packets:356003 errors:0 dropped:0 overruns:0 frame:0           TX packets:479576 errors:0 dropped:0 overruns:0 carrier:0           collisions:18801 txqueuelen:100           Interrupt:10 Base address:0x1000   lo        Link encap:Local Loopback           inet addr:127.0.0.1  Mask:255.0.0.0           UP LOOPBACK RUNNING  MTU:16436  Metric:1           RX packets:55221 errors:0 dropped:0 overruns:0 frame:0           TX packets:55221 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 txqueuelen:0 Lei   - -----Original Message----- From: manjunath [mailto:[EMAIL PROTECTED]] Sent: Friday, February 07, 2003 3:22 PM To: [EMAIL PROTECTED] Subject: Re: Can't ping myself. What is the output of /sbin/ifconfig   .. Check whether eth0 is up/down .. Manjunth Hegde - ----- Original Message ----- From: Rai Ou To: '[EMAIL PROTECTED]' Sent: Friday, February 07, 2003 11:31 AM Subject: Can't ping myself. My Linux box can't get ping response when pinging itself like below: ping localhost ping 127.0.0.1 ping xxx.xxx.xxx.xxx (it is the Global ip get from my cable modem) I post my /etc/hosts file here: - -------------------------------- 127.0.0.1       localhost.localdomain   localhost - -------------------------------- and the /etc/sysconfig/network file is here: - -------------------------------- NETWORKING=yes HOSTNAME="localhost.localdomain" - -------------------------------- Waiting the suggestions. Lei