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mairul · 12-12-2003, 11:37 PM

I cannot ping to my debian PC ...can anyone tell me possible cause....

llamakc · 12-13-2003, 05:37 AM

One possible cause is you don't have the CAT5 plugged into the NIC. Another possible cause is the Debian box is turned off.

You have to give us more information. HOW are you pinging Debian-box? From another machine, right?

Get on the Debian-box and send us the output of

ifconfig

and

route

And we'll go from there.

mairul · 12-13-2003, 09:37 AM

my ifconfig output :

pc3:/# ifconfig
eth0 Link encap:Ethernet HWaddr 00:04:5A:43:68:03
inet addr:192.168.0.3 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:7 errors:0 dropped:0 overruns:0 frame:0
TX packets:23 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:2262 (2.2 KiB) TX bytes:3046 (2.9 KiB)
Interrupt:10 Base address:0xb000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:3924 Metric:1
RX packets:387 errors:0 dropped:0 overruns:0 frame:0
TX packets:387 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:25066 (24.4 KiB) TX bytes:25066 (24.4 KiB)

sl0 Link encap:Serial Line IP
inet addr:192.168.0.1 P-t-P:192.168.0.2 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:10
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

and "route" output

pc3:/# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.0.2 * 255.255.255.255 UH 1 0 0 sl0
localnet * 255.255.255.0 U 0 0 0 eth0
default pc3.dns3.com 0.0.0.0 UG 0 0 0 eth0
default * 0.0.0.0 U 1 0 0 sl0
pc3:/#

pls help....

llamakc · 12-13-2003, 09:44 AM

Where is your router? 192.168.0.1? You can do ifdown sl0 then edit /etc/network/interfaces and comment out all of the sl0 stanza if you don't want that up.

Are you on a LAN only? Do you have a router? Is it another Linux box? Here's my route output:

Code:

[ken:ken](09:42 AM)$ /sbin/route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.0.0     *               255.255.255.0   U     0      0        0 eth0
default         192.168.0.1     0.0.0.0         UG    0      0        0 eth0

mairul · 12-13-2003, 09:54 AM

I don't have any router...

I am on a LAN only which includes 3 pc connected to a 5 port hub

pc1 192.168.0.1 ( win98 )
pc2 192.168.0.2 ( redhat 7.2 )
pc3 192.168.0.3 ( debian )

I can ping to redhat but can't at debian...

do I need to do ifdown...

please tell me what is sl0 stanza....

llamakc · 12-13-2003, 08:16 PM

sl0 Link encap:Serial Line IP
inet addr:192.168.0.1 P-t-P:192.168.0.2 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:10
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

DavidPhillips · 12-14-2003, 01:21 AM

Why do you have the same ip as the win machine assigned to the serial link?
Can you ping 192.168.0.1 from redhat with win98 off?
What's connected where? is the serial link going to redhat?
Are all three on the eth0 LAN?

Looks like the routing is not exactly right.

ifdown sl0

Then test things again.

mairul · 12-14-2003, 12:07 PM

Anyway..thanks for the information....I just re-installed my redhat 9 and debian again at two PC..now I am able to telnet to redhat 9 and debian also...But the problem is I cannot ping between redhat 9 and debian...But with win98 they are working well.....

and this time my debian is giving me some correct information I think...

ifconfig command output is as follows :

debian:/# ifconfig
eth0 Link encap:Ethernet HWaddr 00:00:21:14:51:7B
inet addr:192.168.0.2 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1540 errors:0 dropped:0 overruns:0 frame:0
TX packets:1763 errors:0 dropped:0 overruns:0 carrier:0
collisions:146 txqueuelen:100
RX bytes:1762490 (1.6 MiB) TX bytes:117692 (114.9 KiB)
Interrupt:11 Base address:0xec00

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:3924 Metric:1
RX packets:534 errors:0 dropped:0 overruns:0 frame:0
TX packets:534 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:44924 (43.8 KiB) TX bytes:44924 (43.8 KiB)

sl0 Link encap:Serial Line IP
inet addr:192.168.0.2 P-t-P:192.168.0.3 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:10
RX bytes:0 (0.0 b) TX bytes:504 (504.0 b)

debian:/#

this time sl0 also automatically configured...I don't have any serial card..my question is sl0 automatically configured with debian.....cause I also install redhat 9 at the pc where debian was installed just before...but there is no sl0 information...cause there ifconfig command output is as follows..:

yes...

I got another problem .....I can telnet to debian...and get ifconfig command by using su passwd...

But I am unable at redhat 9...it says command not found...when I am logged on using telnet ...from my win98...but I am getting ifconfig command completely when I am working at redhat...

anyway..redhat 9 ifconfig shows only eth0 and l0 informatins..no sl0 information...

then why I am getting sl0 at debian...

another thing..when I am giving ifdown sl0 then it says...

ifdown:interface sl0 not configured.....

Please help me to communicate between my redhat and debian...