网络不正常，一会好一会断的，不是arp问题

Question

我有监控，用来监控服务器情况，最近两天有台机老是断掉。开始以为是snmp服务有问题，今天发现原来网络有问题，经常断掉，又自动好起来。

　　日志如下：
Apr 10 10:08:54 SN226 last message repeated 11 times
Apr 10 10:09:03 SN226 kernel: bnx2: peth1 NIC Copper Link is Down
Apr 10 10:09:03 SN226 kernel: xenbr1: port 2(peth1) entering disabled state
Apr 10 10:09:26 SN226 kernel: bnx2: peth1 NIC Copper Link is Up, 100 Mbps full duplex, receive & transmit flow control ON

dmesg如下：
xenbr1: port 2(peth1) entering learning state
xenbr1: topology change detected, propagating
xenbr1: port 2(peth1) entering forwarding state
bnx2: peth1 NIC Copper Link is Down
xenbr1: port 2(peth1) entering disabled state
bnx2: peth1 NIC Copper Link is Up, 100 Mbps full duplex, receive & transmit flow control ON

请各位高手帮忙分析一下，是不是硬件有问题？

Answer 1

这不来了吗，，呵

Answer 2

这个版人气好差劲，经常都没人来。