Aliasing different IP blocks to same NIC

From: Lane Vance (lane_at_abetterway.net)
Date: 08/28/03 

Date: 28 Aug 2003 12:42:11 -0700

Hello all,

I have two different blocks of IPs that have different gateways and
netmasks and want to alias them all to one NIC. I run RH 8.0 with the
following in /etc/sysconfig/network-scripts:

ifcfg-eth0:
DEVICE=eth0
BOOTPROTO=static
BROADCAST=64.71.173.255
IPADDR=64.71.173.98
NETMASK=255.255.255.0
NETWORK=64.71.173.0
ONBOOT=yes

ifcfg-eth0-range1:
DEVICE=eth0
BOOTPROTO=static
BROADCAST=64.71.173.255
GATEWAY=64.71.173.1
NETMASK=255.255.255.0
NETWORK=64.71.173.0
IPADDR_START=64.71.173.112
IPADDR_END=64.71.173.114
CLONENUM_START=0
ONBOOT=yes

ifcfg-eth0-range2:
DEVICE=eth0
BOOTPROTO=static
BROADCAST=64.71.153.175
GATEWAY=64.71.153.169
NETMASK=255.255.255.248
NETWORK=64.71.153.168
IPADDR_START=64.71.153.170
IPADDR_END=64.171.153.174
CLONENUM_START=3
ONBOOT=yes

Everything in ifcfg-eth0 and ifcfg-eth0-range1 comes up and works
fine. However, ifcfg-eth0-range2 does not come up. When I restart
networking all looks good:

# service network restart
Shutting down interface eth0: [ OK ]
Shutting down loopback interface: [ OK ]
Setting network parameters: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: [ OK ]
Bringing up interface eth0-range1: [ OK ]
Bringing up interface eth0-range2: [ OK ]

but an ifconfig shows the range2 never came up:

# ifconfig
eth0 Link encap:Ethernet HWaddr 00:10:DC:9D:B1:5E
          inet addr:64.71.173.98 Bcast:64.71.173.255
Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:169702616 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1812188 errors:0 dropped:0 overruns:4 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:209475325 (199.7 Mb) TX bytes:1468565801 (1400.5
Mb)
          Interrupt:11 Base address:0x7000

eth0:0 Link encap:Ethernet HWaddr 00:10:DC:9D:B1:5E
          inet addr:64.71.173.112 Bcast:64.71.173.255
Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          Interrupt:11 Base address:0x7000

eth0:1 Link encap:Ethernet HWaddr 00:10:DC:9D:B1:5E
          inet addr:64.71.173.113 Bcast:64.71.173.255
Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          Interrupt:11 Base address:0x7000

eth0:2 Link encap:Ethernet HWaddr 00:10:DC:9D:B1:5E
          inet addr:64.71.173.114 Bcast:64.71.173.255
Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          Interrupt:11 Base address:0x7000

lo Link encap:Local Loopback
          inet addr:127.0.0.1 Mask:255.0.0.0
          UP LOOPBACK RUNNING MTU:16436 Metric:1
          RX packets:89351 errors:0 dropped:0 overruns:0 frame:0
          TX packets:89351 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:117677790 (112.2 Mb) TX bytes:117677790 (112.2 Mb)

Any help anyone can offer will be greatly appreciated.

TIA,
Lane

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