[CentOS] Simple routing question
James B. Byrne
byrnejb at harte-lyne.ca
Thu Sep 6 20:54:08 UTC 2012
Well, I seem to be getting somewhere, although where exactly is open
to question.
I did this. I put the virtual interface address 192.168.0.1 back onto
eth1 of the gateway host and restarted the network services. The
ifcfg file looked like this:
BOOTPROTO=none
BROADCAST=192.168.255.255
DEVICE=eth1:192
IPADDR=192.168.0.1
IPV6INIT=no
MTU=""
NAME="LAN - Non-routable"
NETMASK=255.255.0.0
NETWORK=192.168.0.0
ONBOOT=yes
ONPARENT=yes
After the restart ip addr showed this:
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
state UP qlen 1000
link/ether 00:25:90:60:11:8d brd ff:ff:ff:ff:ff:ff
inet aaa.bbb.ccc.1/24 brd aaa.bbb.ccc.255 scope global eth1
inet 192.168.0.1/24 brd 192.168.255.255 scope global eth1:192
inet6 fe80::225:90ff:fe60:118d/64 scope link
valid_lft forever preferred_lft forever
Note the cidr suffix on 192.168.0.1 = 24
That is not what I expected. Restarting with the same config did not
change the initially observed outcome.
SO, I edited ifcfg-eth1:192 and added exactly one line:
PREFIX="16"
and restarted the network. ip addr now shows this:
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
state UP qlen 1000
link/ether 00:25:90:60:11:8d brd ff:ff:ff:ff:ff:ff
inet aaa.bbb.ccc.1/24 brd aaa.bbb.ccc.255 scope global eth1
inet 192.168.0.1/16 brd 192.168.255.255 scope global eth1:192
inet6 fe80::225:90ff:fe60:118d/64 scope link
valid_lft forever preferred_lft forever
Note that the cidr suffix is now 16.
Now, when I try and ping an address on the 192.168 netblock from host
C I see this:
# ping 192.168.209.43
PING 192.168.209.43 (192.168.209.43) 56(84) bytes of data.
>From 216.185.71.1: icmp_seq=2 Redirect Host(New nexthop: 192.168.209.43)
>From 216.185.71.1: icmp_seq=3 Redirect Host(New nexthop: 192.168.209.43)
>From 216.185.71.1: icmp_seq=4 Redirect Host(New nexthop: 192.168.209.43)
>From 216.185.71.1: icmp_seq=5 Redirect Host(New nexthop: 192.168.209.43)
>From 216.185.71.1: icmp_seq=6 Redirect Host(New nexthop: 192.168.209.43)
My question now is how do I get to 192.168.209.43?
--
*** E-Mail is NOT a SECURE channel ***
James B. Byrne mailto:ByrneJB at Harte-Lyne.ca
Harte & Lyne Limited http://www.harte-lyne.ca
9 Brockley Drive vox: +1 905 561 1241
Hamilton, Ontario fax: +1 905 561 0757
Canada L8E 3C3
More information about the CentOS
mailing list