Hello.

I have a bridge named "br0" on 2 Intel Pro network cards with interfaces eth0 and eth1.

and I constantly getting one of link down for some seconds with following errors:


kernel: e100: eth1: e100_watchdog: link up, 100Mbps, full-duplex
kernel: br0: port 2(eth1) entering learning state
kernel: br0: topology change detected, propagating
kernel: br0: port 2(eth1) entering forwarding state
kernel: e100: eth1: e100_watchdog: link down
kernel: br0: port 2(eth1) entering disabled state
kernel: e100: eth1: e100_watchdog: link up, 100Mbps, full-duplex
kernel: br0: port 2(eth1) entering learning state
kernel: e100: eth1: e100_watchdog: link down
kernel: br0: port 2(eth1) entering disabled state
kernel: e100: eth1: e100_watchdog: link up, 100Mbps, full-duplex


What does this mean ? Why the link goes down ?

Please help. Thanks in advance!

According to the link in my signature for Fedora & Red Hat device driver and kernel bugs, certain kernels from Red Hat in combination with the eepro driver might have a problem.

So...

What kernel are you using? uname -a

What Intel driver is installed? lsmod

What IRQ's is the system using? cat /proc/interrupts

What does this say? lspci --vv

Are you trying to team those NIC's?

If so, did you download the driver from Teaming package from Intel.com?

Hello! Thank you for reply! Here is my results:

kerlnel: 2.6.9-1.667

#lsmod
......................skipped
e100 39364 0
mii 4673 1 e100
..........................skipped

#cat /proc/interrupts
CPU0
0: 123047946 XT-PIC timer
2: 0 XT-PIC cascade
5: 5454880 XT-PIC eth1
6: 1008262 XT-PIC eth2
8: 1 XT-PIC rtc
9: 7601121 XT-PIC acpi, sym53c8xx, uhci_hcd, eth0
12: 0 XT-PIC uhci_hcd
NMI: 0
ERR: 0

#lspci -vv
.........................skipped

01:0b.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 04)
Subsystem: Intel Corp. EtherExpress PRO/100+
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 64 (2000ns min, 14000ns max), Cache Line Size 08
Interrupt: pin A routed to IRQ 9
Region 0: Memory at f7000000 (32-bit, prefetchable) [size=4K]
Region 1: I/O ports at d000 [size=32]
Region 2: Memory at f3000000 (32-bit, non-prefetchable) [size=1M]
Capabilities: [dc] Power Management version 1
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

01:0c.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 02)
Subsystem: Intel Corp. EtherExpress PRO/100B (TX)
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 64 (2000ns min, 14000ns max)
Interrupt: pin A routed to IRQ 5
Region 0: Memory at f6000000 (32-bit, prefetchable) [size=4K]
Region 1: I/O ports at b800 [size=32]
Region 2: Memory at f2800000 (32-bit, non-prefetchable) [size=1M]


What do you mean by "team those NIC's"?

I tried to change the driver from e100 to eepro100
but this didn't help.

And only one card has such problems - eth1 , eth0 working fine.
This happenned after upgrading linux from RH9 to FC3.
There wasn't any problems with those NIC's on old system....

What can you suggest ? I don't know what to do...