On 04/16/2013 01:37 PM, Jason T. Slack-Moehrle wrote: > Hi All, > > I have 2 NICS in this system. CentOS 6.4 > > eth0 is the virtual IP from PFSense mapping connected to the router, works > fine. > > eth1 is a second NIC that I have assigned a private IP to and connected it > to a switch on the private network. I have many other private devices, so I > know this setup works. > > When I connect the cable to the switch and bring up eth1 the system > basically stops taking requests. I can no longer SSH in, Websites stop > responding, etc. If I walk over to the server and take down eth1, > everything works fine. > > Here is eth0: > DEVICE=eth0 > HWADDR=00:1b:21:cd:80:bf > TYPE=Ethernet > UUID=68a95912-3915-4b1a-9080-eb2017330153 > ONBOOT=yes > NM_CONTROLLED=yes > BOOTPROTO=none > IPADDR=192.168.1.27 > NETMASK=255.255.255.0 > DNS2=8.8.4.4 > GATEWAY=192.168.1.1 > DNS1=8.8.8.8 > IPV6INIT=no > USERCTL=no > > Here is eth1: > DEVICE=eth1 > HWADDR=00:0a:cd:17:07:7e > TYPE=Ethernet > UUID=b3851363-ae9e-4066-8993-caed07b9945b > ONBOOT=no > NM_CONTROLLED=yes > BOOTPROTO=none > IPADDR=10.0.254.11 > NETMASK=255.255.255.0 > GATEWAY=10.0.254.1 > DNS1=8.8.8.8 > DNS2=8.8.4.4 > IPV6INIT=no > USERCTL=no > > I have never experienced this before.
Remove the GATEWAY line from eth1, unless you have another router (with its own access to the Internet) at 10.0.254.1. If eth0 points at your upstream, then this is unlikely.
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