Thread: [network] Cross connectivity problem?

i have 2 ubuntu servers, have connected them each other 2 identical d-link gigabit network adapters , cross cable, back-up tasks , such.

used work, , stopped working. busy never got around fix till now.

here more info:

1. ifconfig on both servers:

root@aylar:/# ifconfig eth2
eth2 link encap:ethernet hwaddr 5c:d9:98:45:81:63
inet addr:192.168.202.1 bcast:192.168.202.255 mask:255.255.255.0

root@snoop:~# ifconfig eth2
eth2 link encap:ethernet hwaddr 5c:d9:98:45:81:64
inet addr:192.168.202.2 bcast:192.168.202.255 mask:255.255.255.0

netdiscover -i eth2 -f

netdiscover shows:

from snoop:

ip @ mac address count len mac vendor
----------------------------------------------------------------
192.168.202.1 5c:d9:98:45:81:63 01 060 unknown vendor

netdiscover ruunning on aylar, shows nothing

netdiscover -i eth2 -r 192.168.202.0/24 ==> nada!
netdiscover -i eth2 -f ==> nada!


1 please point me right direction around this? problem possibly be?

well, seems snoop can see aylar, partly working. can snoop ping aylar?

when running aylar?

code:

arp -a

does lshw show same driver in use on both ends?

code:

sudo lshw -c network

do have ethtool installed? if so, check see duplex mode, link type, link status, etc.

code:

sudo ethtool eth0

last, have ufw installed , configured? if so, see messages in kernel log (/var/log/kernel.log) related dropping packets?

there rules show block packets?
sudo ufw status

luck

Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Networking & Wireless [ubuntu] [network] Cross connectivity problem?

Ubuntu