Heeeeeeelp with Routing Issue

Deron Meranda deron.meranda at gmail.com
Tue Jan 25 15:12:35 UTC 2005


On Tue, 25 Jan 2005 13:35:01 +0100, Roger Grosswiler <roger at gwch.net> wrote:
> Deron Meranda schrieb:
> >    ip neigh list
> > 
> on 10.0.0.1 i see:
> 
> [root at 10.0.0.1 root]# ip neigh list
> 10.0.0.2 dev eth0 lladdr 00:04:5a:65:f8:b7 nud delay
> 
> on 10.0.0.2 i see:
> 
> 192.168.0.1 dev eth1 lladdr 00:05:5d:dc:44:00 nud stale
> 10.0.0.1 dev eth0 lladdr 00:08:c7:4c:3b:c6 nud delay
> 192.168.2.100 dev eth2 lladdr 00:04:5a:88:32:14 nud reachable

Okay, so both machines appear to be able to see packets
from the other, because they both have each other listed
in their ARP tables.  (Assuming that the ehternet address
of your 10.0.0.1 box really is 00:08:c7:4c:3b:c6).

So at this point it doesn't look like a physical problem,
but instead an IP configuration.

But you still can't ping in either direction?
  10.0.0.1>  ping 10.0.0.2
or
  10.0.0.2>  ping 10.0.0.1


Are you sure you don't have any firewall installed on either
box?  Is 10.0.0.1 an old linux distro?  If so check to see if
ifchains is installed rather than iptables.  (Can you tell
what kernel version at least?  cat /proc/version).


> whatever delay in my subnet 10/8 means..can anybody help me??

10/8 is shorthand for 10.0.0.0/8 which itself is shorthand for
10.0.0.0 with netmask 255.0.0.0.   This notation is called
CIDR (Classless Internet Domain Routing), and is easier
to deal with than the old dotted-notation for netmasks.
Google on CIDR.

-- 
Deron Meranda




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