[NTLUG:Discuss] can't ping to 2 NIC box

[m m]

>From: Kyle_Davenport at compusa.com
>Reply-To: discuss at ntlug.org
>To: discuss at ntlug.org
>Subject: Re: [NTLUG:Discuss] can't ping to 2 NIC box
>Date: Mon, 21 Aug 2000 11:05:23 -0500
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>You have to get ping between SA and SB working before worrying about ipfw 
>and
>ipmasq.
>To bypass your routing table (if that is misconfigured) use "ping -r ".
>I just set this up, for a working example:
>netstat -r -n           #on my firewall box, behind another firewall.
>Kernel IP routing table
>Destination     Gateway         Genmask         Flags   MSS Window  irtt 
>Iface
>192.168.1.1     0.0.0.0         255.255.255.255 UH        0 0          0 
>eth1
>172.16.69.245   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 
>eth1
>172.16.64.0     0.0.0.0         255.255.192.0   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         172.16.66.2     0.0.0.0         UG        0 0          0 
>eth0
>
>Can you ping the local interfaces, eth0 & eth1, also?
>
>

Yes, I can ping local interfaces.
Actually, both boxes have two ips, one is public (64.100.100.x), another one 
is private (192.168.100.x).
don't have anyproblem to ping with puvlic ips.
the problem is just can't ping each other with private ips.

adsl-network switch
      |    |    |---SC eth0:   64.100...
      |    |           eth0:1  192.168.100.1
      |    |--------SB eth0:   64.100...
      |                eth0:1  192.168.100.2
      |
     eth0: 64.100...
      SA
     eth1: 192.168.100.3
      |
      |-------------SD eth0: 192.168.100.4


SB,SC,SD have gateway set to 192.168.100.3 (SA)

SC,SB can ping each other

SC, SB can ping to SA with ip 64.100...
SA can ping to SB, SC with ip 64.100...

SC, SB can not ping to SA with ip 192.168.100...
(when ping, just Hang on there)
SA can not ping to SB, SC with ip 64.100...
(when ping, error msg: destination Host Unreachable)

SD can not ping to SA with ip 192.168.100...
(when ping, SD [window 95 box] error msg: ??? timed out)
SA can not ping to SD, SC with ip 192.160...
(when ping, error msg: destination Host Unreachable)

This is my layout, and problems. thank you.

jc
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>"m m" <llliiilll at hotmail.com> on 08/20/2000 04:31:56 AM
>
>Please respond to discuss at ntlug.org
>
>To:   discuss at ntlug.org
>cc:    (bcc: Kyle Davenport/Is/Corporate/CompUSA)
>Subject:  Re: [NTLUG:Discuss] can't ping to 2 NIC box
>
>
>
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> >From: MadHat <madhat at unspecific.com>
> >Reply-To: discuss at ntlug.org
> >To: discuss at ntlug.org
> >Subject: Re: [NTLUG:Discuss] can't ping to 2 NIC box
> >Date: Sat, 19 Aug 2000 21:19:40 -0500
> >
> >m m wrote:
> > >
> > > >From: MadHat <madhat at unspecific.com>
> > >
> > > >m m wrote:
> > > > >
> > > > > Hi all:
> > > > > I have a linux box (say, SA) with 2 NICs, use RH 6.2 os.
> > > > > etho w/ public IP (64.100.100.100) connect to the network switch.
> > > > > eth1 w/ non-routeable IP (192.168.0.1) connect to ahother pc (say,
> >SB)
> > > >w/ IP
> > > > > (192.168.0.2).
> > > > > I have is it physical connected, problems are:
> > > > > ping from SA to SB, the error message is: destination Host
> >Unreachable
> > > > > ping from SB to SA, it hang on there.
> > > > >
> > > > > /etc/hosts on SA has all the hosts information.
> > > > >
> > > > > any suggestions?
> > > >
>
>(snip)
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