Le 24 juil. 2018 à 11:50, Dominik Holler <dholler@redhat.com> a écrit :

On Tue, 24 Jul 2018 11:04:58 +0200
Fabrice Bacchella <fabrice.bacchella@orange.fr> wrote:

To monitoring the network interfaces, I have a script that check if
ifAdminStatus and ifOperStatus values matches in snmp.

But with oVirt it fails on a server with 4 physical interfaces, but
only two connected, and return an error:

You want that eth0 and eth1 are UP, and eth2 and eth3 are DOWN?

Yes.

snmptable XXX IF-MIB::ifTable | less
SNMP table: IF-MIB::ifTable

ifIndex     ifDescr ifAdminStatus ifOperStatus
      1          lo            up           up
      2        eth0            up           up
      3        eth1            up           up
      4        eth2            up         down
      5        eth3            up         down
     24 ;vdsmdummy;          down         down
     25       vnet0            up           up

And indeed on the server:

ip link show eth2
4: eth2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state
DOWN mode DEFAULT group default qlen 1000 link/ether
40:a8:f0:30:81:1a brd ff:ff:ff:ff:ff:ff

looks like eth2 is DOWN, as expected.

It's in state DOWN, but marked UP anyway.

A really DOWN interface is shown as (on another server, not an ovirt host):

4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000

    link/ether a0:d3:c1:fa:8c:8a brd ff:ff:ff:ff:ff:ff