Cyclades AlterPath OnBoard, Administrator'S Manual

Page: 383 / 460

Appendix A: Advanced Device Configuration 347
Understanding Address Configuration for Connected Devices
As shown in the example output from the
ifconfig
command on the
OnBoard in the following figure, both private subnet names are assigned as
aliases to the
priv0
interface, and the OnBoard-side IP addresses and subnet
masks from Figure A-7 are assigned to the each alias.:
Figure A-8:
ifconfig
Output With
priv0
Aliases for Two Private
Subnets
The configuration of the devices shown in Figure A-6 is described in the
following bulleted list:
• “sp1” is on private subnet “sub1,” so it needs an IP address in the range
192.168.1—192.168.1.255: 192.168.1.2.
• “sp2” is also on private subnet “sub1,” so its IP address in the same range:
192.168.1.3.
• “sp3” is on private subnet “sub2.” It has previously been assigned the IP
address 192.168.4.21, which cannot be changed.
• “sp4” is also on private subnet “sub2.” It has previously been assigned IP
address 192.168.4.22 and its address cannot be changed either.
The following figure shows the values specified on the Web Manager
Config
→
Devices: Add new devices dialog to specify the private subnet,
and the device IP for “sp1,”, “sp2,” “sp3,” and “sp4.”
priv0:sub1 Link encap:Ethernet HWaddr 00:60:2E:BB:AA:AA
inet addr:192.168.1.1 Bcast:192.168.0.255
Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Base address:0xe000
priv0:sub2 Link encap:Ethernet HWaddr 00:60:2E:BB:AA:AA
inet addr:192.168.4.1 Bcast:172.10.0.255
Mask:255.255.252.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Base address:0xe000