Posts Tagged “eth1”

Earlier I was setting up a PXE boot server that was connected to two networks and wanted to hand out DHCP addresses only on the second interface which in this case was eth1. The primary interface on the server is eth0 however that Ethernet port is attached to a switch that already has a DHCP server connected to it so I needed to make sure that the DHCP server only replies to requests on eth1. Use the dhcpd.conf configuration option below to specify the Ethernet interface that dhcpd will listen for and reply to DHCP and/or BOOTP requests.

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Recently I was assisting a company set up a new network. This particular company had multiple drops connected to different routers and each server had at least two Network Interface Cards(NICs). The servers were CentOS version 5.2 and seemed to be having trouble routing out one network or the other depending on how the default route was set. I have set this up multiple times in the past and never had an issue though it has been a couple years since I configured this successfully. A colleague at the company I was working with found an article which you can read by clicking here. The article describes how to create more complex routing scenarios that create default routes per network interface (in this case eth0 and eth1) to fire off when the server reboots. The article was not the easiest to find in the manner we were looking for it so i wanted to provide a more convenient means to locate this article.

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