[CentOS] need help on second Ethernet port (eth1) point to point connect

gnulinux gnulinux at comcast.net
Wed Aug 29 14:09:25 UTC 2007


mcclnx mcc wrote:
> I have two DELL servers with two Ethernet ports in it.
>  Bith servers have CENTOS 4.5 installed.  First
> Ethernet port connect to public Ethernet line and work
> correctly.  Second Ethernet port I connect
> point-to-point as private Ethernet (cable direct
> connect without router or switch).  Private Ethernet
> use IP asddress 1.1.1.1 and 1.1.1.2.
>
> I check "ifconfig -a" and both eth0 and eth1 are up
> and active.  when I tried to ping another server use
> second port (private) and no response.  Does anything
> I configure wrong?
>
> Thanks.
>
> ========   info   ===  
>
>  %ifconfig -a
> eth0      Link encap:Ethernet  HWaddr
> 00:08:74:EA:54:64  
>           inet addr:172.29.86.15  Bcast:172.29.85.255 
> Mask:255.255.255.0
>           inet6 addr: fe80::208:74ff:feea:5464/64
> Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500 
> Metric:1
>           RX packets:471 errors:0 dropped:0 overruns:0
> frame:0
>           TX packets:91 errors:0 dropped:0 overruns:0
> carrier:0
>           collisions:0 txqueuelen:0 
>           RX bytes:65669 (64.1 KiB)  TX bytes:11847
> (11.5 KiB)
>
> eth1      Link encap:Ethernet  HWaddr
> 00:0E:2E:C8:B9:80  
>           inet addr:1.1.1.1  Bcast:1.1.1.255 
> Mask:255.255.255.0
>           UP BROADCAST MULTICAST  MTU:1500  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:1000 
>           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
>           Interrupt:18 Base address:0x4c00 
>
> %ping 1.1.1.2
> PING 1.1.1.2 (1.1.1.2) 56(84) bytes of data.
> >From 1.1.1.1 icmp_seq=1 Destination Host Unreachable
> >From 1.1.1.1 icmp_seq=2 Destination Host Unreachable
> >From 1.1.1.1 icmp_seq=3 Destination Host Unreachable
>
> --- 1.1.1.2 ping statistics ---
> 4 packets transmitted, 0 received, +3 errors, 100%
> packet loss, time 3015ms
> , pipe 3
>
>
> %telnet 1.1.1.2
> Trying 1.1.1.2...
> telnet: connect to address 1.1.1.2: No route to host
>   
Try a private network IP 192.168.xxx.xxx? Right ether cable, straight?



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