W98 can ping Linux; Linux can't ping W98??

W98 can ping Linux; Linux can't ping W98??

Post by Mark Larime » Thu, 06 May 1999 04:00:00



Okay... the Win98 machine can ping the Linux box, telnet to it, ftp to it.
But the Linux box can't ping the Win98 machine!?

Win98: 192.168.1.1
Linux (RedHat 6): 192.168.1.2


eth0      Link encap:Ethernet  HWaddr 00:40:33:D9:AB:21
          inet addr:192.168.1.2  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:633 errors:0 dropped:0 overruns:0 frame:0
          TX packets:526 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          Interrupt:5 Base address:0x300

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:232 errors:0 dropped:0 overruns:0 frame:0
          TX packets:232 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0

When the Linux box tries to ping the W98 machine, both "Act" lights on the
two NICs blink...but it still gets 100% packet loss.

Any ideas?

Any help would be huge.
Thanks...
--mark

--
**********************************************************
*** FantasyBowl.com              Play Fantasy Football ***
*** http://fantasybowl.com        1999 Grand Opening!  ***
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W98 can ping Linux; Linux can't ping W98??

Post by Curt » Thu, 06 May 1999 04:00:00


Can you post the result of netstat -nr ?  Do you have a route to the local
net?

Also I noticed the MTU on your loopback address is 3924.  This usually is
3584.
I don't know that this would cause any problem though.


> Okay... the Win98 machine can ping the Linux box, telnet to it, ftp to it.
> But the Linux box can't ping the Win98 machine!?

> Win98: 192.168.1.1
> Linux (RedHat 6): 192.168.1.2


> eth0      Link encap:Ethernet  HWaddr 00:40:33:D9:AB:21
>           inet addr:192.168.1.2  Bcast:192.168.1.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:633 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:526 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:100
>           Interrupt:5 Base address:0x300

> 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:232 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:232 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0

> When the Linux box tries to ping the W98 machine, both "Act" lights on the
> two NICs blink...but it still gets 100% packet loss.

> Any ideas?

> Any help would be huge.
> Thanks...
> --mark

> --
> **********************************************************
> *** FantasyBowl.com              Play Fantasy Football ***
> *** http://fantasybowl.com        1999 Grand Opening!  ***
> ***                                                    ***
> *** Mark D. Larimer                                    ***

> **********************************************************


 
 
 

W98 can ping Linux; Linux can't ping W98??

Post by Mark Larime » Thu, 06 May 1999 04:00:00


Sure...here you go.


Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt
Iface
192.168.1.2     0.0.0.0         255.255.255.255 UH        0 0       0 eth0
192.168.1.0     0.0.0.0         255.255.255.0   U         0 0       0 eth0
127.0.0.0       0.0.0.0         255.0.0.0       U         0 0       0 lo
0.0.0.0         192.168.1.1     0.0.0.0         UG        0 0       0 eth0

Let me know if you see anything fishy in here. Thanks...
--mark


> Can you post the result of netstat -nr ?  Do you have a route to the local
> net?

> Also I noticed the MTU on your loopback address is 3924.  This usually is
> 3584.
> I don't know that this would cause any problem though.

**********************************************************
*** FantasyBowl.com              Play Fantasy Football ***
*** http://fantasybowl.com        1999 Grand Opening!  ***
***                                                    ***
*** Mark D. Larimer                                    ***

**********************************************************
 
 
 

W98 can ping Linux; Linux can't ping W98??

Post by Curt » Fri, 07 May 1999 04:00:00


Well you don't really need a host route UH.  A route to the 192.168.1.0 net
should be sufficient (unless you have aliased interfaces).

Now it seems odd that the MSS in 0.    I would expect it to be 1500 for eth0
and 3584 for lo.


> Sure...here you go.


> Kernel IP routing table
> Destination     Gateway         Genmask         Flags   MSS Window  irtt
> Iface
> 192.168.1.2     0.0.0.0         255.255.255.255 UH        0 0       0 eth0
> 192.168.1.0     0.0.0.0         255.255.255.0   U         0 0       0 eth0
> 127.0.0.0       0.0.0.0         255.0.0.0       U         0 0       0 lo
> 0.0.0.0         192.168.1.1     0.0.0.0         UG        0 0       0 eth0

> Let me know if you see anything fishy in here. Thanks...
> --mark


> > Can you post the result of netstat -nr ?  Do you have a route to the
local
> > net?

> > Also I noticed the MTU on your loopback address is 3924.  This usually
is
> > 3584.
> > I don't know that this would cause any problem though.

> **********************************************************
> *** FantasyBowl.com              Play Fantasy Football ***
> *** http://fantasybowl.com        1999 Grand Opening!  ***
> ***                                                    ***
> *** Mark D. Larimer                                    ***

> **********************************************************