ifconfig eth1 show only "UP RUNNING NOARP"
 

Friends

I am trying to debug an issue in one of our Dell 1850 server running Redhat Linux AS4

The issue is the eth1 interface is not coming on to the network and system is not responding to any arp request or not doing any broadcast.

The ifoconfig shows the following

# ifconfig eth1
eth1 Link encap:Ethernet HWaddr 00:14:22:24:43:5C
inet addr:192.168.47.2 Mask:255.255.255.0
UP RUNNING NOARP MTU:1500 Metric:1
RX packets:28060 errors:0 dropped:0 overruns:0 frame:0
TX packets:426 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:2757303 (2.6 Mb) TX bytes:39966 (39.0 Kb)
Base address:0xdcc0 Memory:fe3e0000-fe400000

as you can see there is no "BROADCAST" "MULTICAST" and ARP in not on.

I have verified the configaration, routing table and logs all looks good

what could be the issue is this a NIC hardware issue? and how can we force "BROADCAST" "MULTICAST" and ARP on this interface.

Any help is greatly apprciated

Thanks in advance.
Shyam

I just reviewed the ifconfig man page and noticed that there are mechanisms for disabling each of arp, broadcast, and multicast. You might try playing around manually with ifconfig. If you can manually get these back then you'll know it has to be a configuration issue rather than hardware.