[CentOS] OT: systemd Poll

[Alice Wonder]

On 04/11/2017 05:30 AM, Jonathan Billings wrote:
> On Tue, Apr 11, 2017 at 08:09:01AM -0400, Pete Orrall wrote:
>>> And *why* random NIC names? Quick, you've got servers from 5
>>> manufacturers, of different ages... what's the NIC going to be called? Do
>>> names like enp5s0 offer any convenience to *anyone* not a hardware
>>> engineer?
>>
>> As someone else had stated, it's not related to SystemD but
>> Fedora/RHEL has changed the way they handle some things.  NICs, for
>> instance, are no longer named after the device number (eth0, eth1,
>> eth2, etc.) but after the *driver* name.  Yes, it's a change but it
>> also makes sense.  IIRC this is how FreeBSD handles NIC names.
>
> It's true that FreeBSD names their network interfaces after the driver.
>
> But the consistent device naming in Linux comes from slot index
> numbers, physical location and even the MAC (if so configured), and
> not what driver it uses.
>
> https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Networking_Guide/ch-Consistent_Network_Device_Naming.html#sec-Naming_Schemes_Hierarchy
>

Okay that makes sense.

eno1: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
         ether 0c:c4:7a:c8:a5:4c  txqueuelen 1000  (Ethernet)
eno2: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
         ether 0c:c4:7a:c8:a5:4d  txqueuelen 1000  (Ethernet)

Those two are my onboard nic, Intel - Scheme 1

enp10s0f0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
         ether 00:1b:21:94:72:37  txqueuelen 1000  (Ethernet)
enp10s0f1: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
         ether 00:1b:21:94:72:36  txqueuelen 1000  (Ethernet)
enp9s0f0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
         ether 00:1b:21:94:72:35  txqueuelen 1000  (Ethernet)
enp9s0f1: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500

Those four are on a PCI-E card, Intel - Scheme 3

05:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network 
Connection (rev 03)
06:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network 
Connection (rev 03)
09:00.0 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet 
Controller (Copper) (rev 06)
09:00.1 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet 
Controller (Copper) (rev 06)
0a:00.0 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet 
Controller (Copper) (rev 06)
0a:00.1 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet 
Controller (Copper) (rev 06)

Anyway thanks for that link.