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Monday, May 14, 2012

ETH1 goes down when ETH0 is disabled or unplugged

Pretty new to linux and recently built a file server utilizing an old PC. I installed a new 1 GB NIC following the vendors instruction without issue and I am able to get an IP and ping the interface when ETH0 is also plugged in. But when I try to pull the cable for ETH0 (old onboard card) I lose ETH1 (new 1 GB card) as well. Any ideas to what is going on?



NIC hardware:

ETH1 00:0b.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet (rev 10)



ETH0 00:0d.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)





Here is the ifconfig.





eth0 Link encap:Ethernet HWaddr 00:50:2C:05:D1:6B

inet addr:192.168.1.201 Bcast:192.168.1.255 Mask:255.255.255.0

inet6 addr: fe80::250:2cff:fe05:d16b/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:340014174 errors:0 dropped:0 overruns:0 frame:0

TX packets:258254949 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:1652336234 (1575.7 Mb) TX bytes:707605757 (674.8 Mb)

Interrupt:18 Base address:0xd800



eth1 Link encap:Ethernet HWaddr 00:0A:CD:1C:19:32

inet addr:192.168.1.71 Bcast:192.168.1.255 Mask:255.255.255.0

inet6 addr: fe80::20a:cdff:fe1c:1932/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:5166 errors:0 dropped:0 overruns:0 frame:0

TX packets:160 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:403611 (394.1 Kb) TX bytes:8242 (8.0 Kb)

Interrupt:19 Base address:0x6000











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