Infrastructure Software

Hi.
The situation did not clear for me.
The blade has 2 network cards. Blade is connected to a SAN with storage system. . LUN on the storage system is built. On LUN hosting OS.

When I install Oracle Linux 5.8 , I configured and activated one interface et0 with static IP.
Configuration is performed using systems-tsonfig-Network.
Everything seems to work well.
Recently OS in /var/log/messages has formed a number of reports and warnings regarding the restructuring of network interfaces.
Was launched dnsmask.
Sep 7 16:16:52 ******** dnsmasq[2503]: started, version 2.45 cachesize 150

Read information from /etc/resolv.conf .
Next, the system reported that the link is not ready for eth1:using MSIX.
The system then lifted eth1 interface, as reported in the log.
Sep 7 16:16:53 ****** kernel: bnx2 0000:10:00.1: eth1: NIC SerDes Link is Up, 1000 Mbps full duplex, receive & transmit flow control ON

After that, was launched NetworkManager. NetworkManager tried to run all known network interfaces (eth0, eth1, usb0) twice in a row.
The second time, it translates each subsequent interface from one state to another. Then deactivate them (reason 2)

after all this is the OS Registering new address record for ***.***.***.*** on eth0, but in the log with Periodicity of 4 minutes were recorded the following messages:

Sep 7 16:30:35 ****** dhclient: DHCPREQUEST on usb0 to 169.254.95.118 port 67 (xid=0x1006a443)
Sep 7 16:30:35 ****** dhclient: DHCPACK from 169.254.95.118 (xid=0x1006a443)

Then I stopped the usb0 interface command: ifconfig usb0 down success
When you try to stop et1 interface rises again

Sep 11 08:29:31 ****** kernel: bnx2 0000:10:00.1: eth1: NIC SerDes Link is Down
Sep 11 08:29:31 ****** kernel: bnx2 0000:10:00.1: eth1: NIC SerDes Link is Up, 1000 Mbps full duplex, receive & transmit flow control ON
Sep 11 08:29:32****** avahi-daemon[4546]: New relevant interface eth1.IPv6 for mDNS.
Sep 11 08:29:32 ****** avahi-daemon[4546]: Joining mDNS multicast group on interface eth1.IPv6 with address fe80::5ef3:fcff:fe96:6cae.
Sep 11 08:29:32 ****** avahi-daemon[4546]: Registering new address record for fe80::5ef3:fcff:fe96:6cae on eth1.

In this case, NetworkManager rewrite /etc/resolv.conf the following content:
# Generated by NetworkManager
# No nameservers found; try putting DNS servers into your
# ifcfg files in /etc/sysconfig/network-scripts like so:
#
# DNS1=xxx.xxx.xxx.xxx
# DNS2=xxx.xxx.xxx.xxx
# DOMAIN=lab.foo.com bar.foo.com

Although I make to the file information on DNS servers.

Now ifconfig issues that I have 3 interfaces:

eth0 Link encap:Ethernet HWaddr 5C:F3:FC:96:6C:AC
inet addr:**.***.**.** Bcast:10.130.35.255 Mask:255.255.255.0
inet6 addr: fe80::5ef3:fcff:fe96:6cac/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:18761290 errors:0 dropped:0 overruns:0 frame:0
TX packets:14428785 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2491926632 (2.3 GiB) TX bytes:12944829478 (12.0 GiB)
Interrupt:30 Memory:fa000000-fa012800

eth1 Link encap:Ethernet HWaddr 5C:F3:FC:96:6C:AE
inet6 addr: fe80::5ef3:fcff:fe96:6cae/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:15008 errors:0 dropped:0 overruns:0 frame:0
TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1011908 (988.1 KiB) TX bytes:3572 (3.4 KiB)
Interrupt:37 Memory:92000000-92012800

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:7956773 errors:0 dropped:0 overruns:0 frame:0
TX packets:7956773 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1642338782 (1.5 GiB) TX bytes:1642338782 (1.5 GiB)

Dear forum members tell me:
1. Why is it so strange to the system behaves?
2. why this behavior NetworkManager?
3. How to stop the network interface eth1?
4. How to set up binding?


Thanks in advance for your answers