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D0zer
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Joined: 28 Jul 2013
Posts: 46
Location: South Africa
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 Posted: Fri Jan 16, 2015 11:40 am Post subject: Network Adapters swap around after a reboot. |
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Hi All
I am having a networking issue after a reboot on a Gentoo box. The machine has 3 NIC, but only 2 are currently used.
| Code: | eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet x.x.x.x netmask 255.255.255.248 broadcast x.x.x.x
inet6 fe80::21b:21ff:fe14:b346 prefixlen 64 scopeid 0x20<link>
ether 00:1b:21:14:b3:46 txqueuelen 1000 (Ethernet)
RX packets 10640035 bytes 10237088942 (9.5 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 9030419 bytes 1814659462 (1.6 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.15.254 netmask 255.255.255.0 broadcast 192.168.15.255
inet6 fe80::92e2:baff:fe1a:d60 prefixlen 64 scopeid 0x20<link>
ether 90:e2:ba:1a:0d:60 txqueuelen 1000 (Ethernet)
RX packets 9522791 bytes 1761964059 (1.6 GiB)
RX errors 8 dropped 18 overruns 0 frame 4
TX packets 13206014 bytes 18539798930 (17.2 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
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After a reboot, the network adapters change around. To resolve I unplug the LAN and WAN Cables from the Gentoo box. Start a ping to the router and plug the wan cable back in and swap ports till I get a reply and then do the same with the LAN part of the network.
There are 3 files under /etc/udev/rules.d
70-my-persistent-net.rules
70-persistent-cd.rules
70-persistent-net.rules
Thanks in Advance.
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szczerb
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Joined: 24 Feb 2007
Posts: 1709
Location: Poland => Lodz
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| Posted: Fri Jan 16, 2015 11:45 am Post subject: |
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| What's in '70-my-persistent-net.rules' and '70-persistent-net.rules'? Why do you have two? |
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charles17
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Joined: 02 Mar 2008
Posts: 3664
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| Posted: Fri Jan 16, 2015 12:04 pm Post subject: Re: Network Adapters swap around after a reboot. |
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| D0zer wrote: | | After a reboot, the network adapters change around. To resolve I unplug the LAN and WAN Cables from the Gentoo box. Start a ping to the router and plug the wan cable back in and swap ports till I get a reply and then do the same with the LAN part of the network. |
Migrating from netifrc to using dhcpcd ans your network manager should help avoiding such problems, see https://wiki.gentoo.org/wiki/Network_management_using_DHCPCD.
| D0zer wrote: | There are 3 files under /etc/udev/rules.d
70-my-persistent-net.rules
70-persistent-cd.rules
70-persistent-net.rules
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Could you check your output of dmesg? | Quote: | $ dmesg | grep 'network interface'
(you should get something like:)
[ 8.132263] systemd-udevd[268]: renamed network interface wlan0 to wlp8s0
[ 8.160220] systemd-udevd[264]: renamed network interface eth0 to enp2s14 |
Also, how do the network adapters show in lspci -k? |
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D0zer
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Joined: 28 Jul 2013
Posts: 46
Location: South Africa
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| Posted: Fri Jan 16, 2015 1:15 pm Post subject: |
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szczerb - | Quote: | | What's in '70-my-persistent-net.rules' and '70-persistent-net.rules'? Why do you have two? |
I don't know where there is 2 files there
"70-my-persistent-net.rules"
| Code: | # PCI device 0x8086:0x107c (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="90:e2:ba:1a:0d:60", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x8086:0x1503 (e1000e)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="38:60:77:7c:76:03", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
# PCI device 0x8086:0x107c (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:1b:21:14:b3:46", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2" |
"70-persistent-net.rules"
| Code: | # PCI device 0x8086:0x107c (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="90:e2:ba:1a:0d:60", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x8086:0x1503 (e1000e)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="38:60:77:7c:76:03", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
# PCI device 0x8086:0x107c (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:1b:21:14:b3:46", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2"
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They look identical to me.
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D0zer
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Joined: 28 Jul 2013
Posts: 46
Location: South Africa
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| Posted: Fri Jan 16, 2015 1:21 pm Post subject: |
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charles17 - | Code: | | dmesg | grep 'network interface' |
didn't produce and output.
| Quote: | | Also, how do the network adapters show in lspci -k? |
| Code: | 02:01.0 Ethernet controller: Intel Corporation 82541PI Gigabit Ethernet Controller (rev 05)
Subsystem: Intel Corporation PRO/1000 GT Desktop Adapter
Kernel driver in use: e1000
Kernel modules: e1000
02:02.0 Ethernet controller: Intel Corporation 82541PI Gigabit Ethernet Controller (rev 05)
Subsystem: Intel Corporation PRO/1000 GT Desktop Adapter
Kernel driver in use: e1000
Kernel modules: e1000
00:19.0 Ethernet controller: Intel Corporation 82579V Gigabit Network Connection (rev 05)
Subsystem: Intel Corporation Device 201c
Kernel driver in use: e1000e
Kernel modules: e1000e |
2 of the NICS are PCIE cards and the one is the onboard.
I don't think udev has been updated to the latest version yet.
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charles17
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Joined: 02 Mar 2008
Posts: 3664
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| Posted: Fri Jan 16, 2015 1:32 pm Post subject: |
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| D0zer wrote: | | Code: | 02:01.0 Ethernet controller: Intel Corporation 82541PI Gigabit Ethernet Controller (rev 05)
Subsystem: Intel Corporation PRO/1000 GT Desktop Adapter
Kernel driver in use: e1000
Kernel modules: e1000
02:02.0 Ethernet controller: Intel Corporation 82541PI Gigabit Ethernet Controller (rev 05)
Subsystem: Intel Corporation PRO/1000 GT Desktop Adapter
Kernel driver in use: e1000
Kernel modules: e1000
00:19.0 Ethernet controller: Intel Corporation 82579V Gigabit Network Connection (rev 05)
Subsystem: Intel Corporation Device 201c
Kernel driver in use: e1000e
Kernel modules: e1000e |
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What about | Quote: | | # dmesg | '02:01.0\|02:02.0\|00:19.0' |
Last edited by charles17 on Fri Jan 16, 2015 3:22 pm; edited 1 time in total |
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digifuzzy
Tux's lil' helper
Joined: 31 Oct 2014
Posts: 80
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| Posted: Fri Jan 16, 2015 2:54 pm Post subject: |
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I've run into something similar with motherboard LAN and add-in cards.
If you don't use the lan on the MB (I'm assuming this | Quote: | | 00:19.0 Ethernet controller: Intel Corporation 82579V Gigabit Network Connection (rev 05) |
is built into the MB)
- disable it in BIOS. |
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digifuzzy
Tux's lil' helper
Joined: 31 Oct 2014
Posts: 80
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| Posted: Fri Jan 16, 2015 2:59 pm Post subject: |
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| Quote: |
"70-my-persistent-net.rules"
| Code: | # PCI device 0x8086:0x107c (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="90:e2:ba:1a:0d:60", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x8086:0x1503 (e1000e)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="38:60:77:7c:76:03", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
# PCI device 0x8086:0x107c (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:1b:21:14:b3:46", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2" |
"70-persistent-net.rules"
| Code: | # PCI device 0x8086:0x107c (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="90:e2:ba:1a:0d:60", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x8086:0x1503 (e1000e)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="38:60:77:7c:76:03", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
# PCI device 0x8086:0x107c (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:1b:21:14:b3:46", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2"
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This seems messy.
You have references to device 0x107c four times in two files with two different MAC addresses.
Clean up time? I would double check these MAC values. |
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D0zer
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Joined: 28 Jul 2013
Posts: 46
Location: South Africa
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| Posted: Tue Jan 27, 2015 1:49 pm Post subject: |
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Thanks for help so far charles17 and digifuzzy
charles17
| Code: | | # dmesg | '02:01.0\|02:02.0\|00:19.0' |
Does not produce an output.
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D0zer
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Joined: 28 Jul 2013
Posts: 46
Location: South Africa
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| Posted: Tue Jan 27, 2015 2:00 pm Post subject: |
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digifuzzy
I will go through both files and clean them up. I think the hardrive has been swapped into a different box previsouly which could be part of the mess.
I was thinking of teaming the 2 add-in Nics for the LAN, and use the Onboard NIC for the WAN. When I look at the network stats on the switch, on the port the gentoo box is connected to it shows :
| Code: |
Transmitted Pause Frames : 48655
Received Pause Frames : 824
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Would teaming the 2 nics on the Lan side improve Network performance ?
Thanks again.
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digifuzzy
Tux's lil' helper
Joined: 31 Oct 2014
Posts: 80
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| Posted: Tue Jan 27, 2015 2:13 pm Post subject: |
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| D0zer wrote: | digifuzzy
Would teaming the 2 nics on the Lan side improve Network performance ?
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YMMV. But it could be messy in the routing if you're not careful.
I use shorewall (iptables front end/firewall) to help with managing that kind of stuff. |
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D0zer
n00b
Joined: 28 Jul 2013
Posts: 46
Location: South Africa
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| Posted: Fri Feb 06, 2015 9:20 am Post subject: (Solved) |
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I decided to remove one of the PCI Network cards that was not being used.
I deleted the net.eth2 from /etc/init.d/
I used ifconfig to get the MAC addresses of the 2 NICs that are being used. I checked in /etc/udev/rules.d/70-my-persistent-net.rules, I commented out eth2 which was a mac address no longer being used.
After a couple of reboots the system was stable and I did not have to change network cables between the router and LAN around.
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