[clue] networking Q?

Charles Burton charles.d.burton at gmail.com
Tue Jul 5 13:33:25 MDT 2016


Did you make sure the HWADDR is the same?  You can just comment that out
too if you're using a single adapter.

On Tue, Jul 5, 2016 at 1:25 PM, Mike Bean <beandaemon at gmail.com> wrote:

>
> OK, I'm running low on my bag of tricks,  as is my custom when I get
> desperate, I consult the council!
>
> I have a series of seven DL380's using 10GB 2 port NICs which are HP 560
> SFP adapters.  Using the same configuration on each host, I've been able to
> get network on six of them, using CentOS 6.7; config files follow
>
> As near as I can tell, the only difference between the one without
> network, and the 6 that do, is the six that do have two of the 10GB nics,
> and the one without, has one.  (2 ports to each NIC)
>
> Ethtool shows no link, ip link show, shows BROADCAST, MULTICAST, UP,
>  state unknown.
>
> (scratches head)   If I'm missing something, I sure don't know what it
> is.  Got my networking guy to show me a copy of the switch port config,
> it's identical for all ports.  My onsite guy assures me it's plugged in and
> they've got link light on the cable.
>
> If I'm missing something, it sure isn't jumping out at me.  So all advice
> is appreciated.
> Is there a way to tell definitively which ethernet I need configure?  In
> case maybe it's not eth0?   Unlikely - since the other six came up fine
> when I configured eth0, but I'm running low on ideas.
>
> Mike B
>
> (etc/hosts)
> 127.0.0.1   localhost localhost.localdomain localhost4
> localhost4.localdomain4
> ::1         localhost localhost.localdomain localhost6
> localhost6.localdomain6
> 127.0.1.1 (HOSTNAME)
>
> (/etc/resolv.conf)
> search DOMAIN1 DOMAIN2 nameserver DNS1 nameserver DNS2
>
> (/etc/sysconfig/network)
> NETWORKING=yes
> GATEWAY= (GATEWAY)
> HOSTNAME= (HOSTNAME)
> IPV6FORWARDING=yes
> IPV6_AUTOCONF=no
> IPV6_AUTOTUNNEL=no
> IPV6_DEFAULTDEV=eth0
> NETWORKING_IPV6=yes
>
> (/etc/sysconfig/network-scripts/ifcfg-eth0)
>
> DEVICE=eth0 HWADDR= (SOMEADDR) TYPE=Ethernet UUID= (SOMEUUID) ONBOOT=yes
> NM_CONTROLLED=yes BOOTPROTO=static GATEWAY= (GATEWAY) IPADDR=(IPADDR)
> NETMASK=255.255.255.0 DNS1= (DNS1) DNS2=(DNS2) DOMAIN=(DOMAIN) PEERDNS=no
> USERCTL=no
>
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