problems with mac address

[Carme Torca]

Hi,

I have two systems up, but when I ask for lans
# iconfig -a, the interfaces doesn't have HWaddrs

# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:00:00:00:00:00
inet addr:192.168.54.17 Bcast:192.168.54.63 Mask:255.255.255.192
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:313925862 errors:0 dropped:0 overruns:0 frame:0
TX packets:120375756 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:2837492947 (2706.0 Mb) TX bytes:176688718 (168.5 Mb)
Interrupt:11 Memory:f7ef0000-f7f00000

How could I resolv it?? Maybe some drivers??
Could I put one HWaddr online??

Thanks!,
Carmen.

[Celso Medina Kern]

Carme,

As you see that there is traffic in and out, it seems that your interface is working, right?

If so, it should be a simple display problem, maybe because your are not using the exact driver for your network adapter. You can discover this interface hw address by looking at `arp -a` output from another host after pinging this interface.

To see the exact driver, you need to list the network interface model here and look at manufacturer website for proper driver.

Celso

[Carme Torca]

Hi,

I have prove arp -a but it shows me 00:00:00:00:00:00.
Any idea??

[root@]# arp -a
? (192.168.54.17) at 00:00:00:00:00:00 [ether] on eth0
? (192.168.54.1) at 01:50:5A:A8:36:01 [ether] on eth0
? (172.30.18.1) at 00:10:DB:28:B7:DB [ether] on eth1

Thanks!

[Francesco Sarno]

Hi Carme,
if you can, try to stop the network service ('service network stop'), remove the module of net card (see 'lsmod' and then 'rmmod name_of_module' and restart the network service '(service netowork start) and see 'ifconfig -a'.

Bye, Francesco.

[Steven E. Protter]

If the mac address won't display but the card works, use the card until it dies. It more than likely will die because something is wrong.

If its under warranty, run diags and see if the manufacturer will replace it.

This is a hardware issue and i doubt drivers are going to help at all.

SEP

[Celso Medina Kern · Accepted solution]

So you have a real problem, a MAC should never be all 0´s.

I´ve seens newer network cards/drivers that have the capability of setting mac via software, what sometimes is very bad because of duplications.

The next step is to check the correct driver for your card. Please specify your hardware in details so that it is feasible for me to discover what is the driver for your card. If you have redhat.

C

[Suresh Pai]

A couple of questions:
1. does this setup still work? Can you still connect to (say using telnet/..) this machine from other machines on the network? What does arp -a on those other machines say about this box (esp for 192.168.54.17)
I suspect that this is not possible, and all network connections are happening via the other interface.

2. It is possible to change the MAC address for certain hardware, using the ifconfig command. You can find the details here:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=650847
Could someone have run this command at a time later than boot time?

[Sยภเl Kย๓คг]

Which is these machine.Can you tell me since do have this problem .Is the problem starts just now only.This seems to be the problem with the card.The card is going to fail shortly.Get it replaced
regards
SK

[Sunil Kumar C Aladhi_1]

Try "dmesg | grep eth0"

-Sunil

[Carme Torca]

Hi,

This server its an HP Proliant DL380.
Doing an lsmod, I have:

# lsmod
Module Size Used by
autofs 13796 0 (autoclean) (unused)
bcm5700 97604 2
usb-ohci 21248 0 (unused)
usbcore 65696 1 [usb-ohci]
ext3 64624 5
jbd 40992 5 [ext3]
cciss 17488 6
sd_mod 11584 0 (unused)
scsi_mod 95664 1 [sd_mod]

In the dmesg I have:

Linux version 2.4.7-10 (bhcompile@stripples.devel.redhat.com) (gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-98)) #1 Thu Sep 6 17:27:27 EDT 2001
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009f400 (usable)
BIOS-e820: 000000000009f400 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000005fffa000 (usable)
BIOS-e820: 000000005fffa000 - 0000000060000000 (ACPI data)
BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
BIOS-e820: 00000000fee00000 - 00000000fee10000 (reserved)
BIOS-e820: 00000000ffc00000 - 0000000100000000 (reserved)
Scanning bios EBDA for MXT signature
639MB HIGHMEM available.
On node 0 totalpages: 393210
zone(0): 4096 pages.
zone(1): 225280 pages.
zone(2): 163834 pages.
Kernel command line: ro root=/dev/cciss/c0d0p5
Initializing CPU#0
Detected 2788.105 MHz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 5557.45 BogoMIPS
Memory: 1541784k/1572840k available (1269k kernel code, 28620k reserved, 90k data, 220k init, 655336k highmem)
Dentry-cache hash table entries: 262144 (order: 9, 2097152 bytes)
Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes)
Mount-cache hash table entries: 32768 (order: 6, 262144 bytes)
Buffer-cache hash table entries: 131072 (order: 7, 524288 bytes)
Page-cache hash table entries: 524288 (order: 10, 4194304 bytes)
CPU: Before vendor init, caps: bfebfbff 00000000 00000000, vendor = 0
CPU: L1 I cache: 12K, L1 D cache: 8K
CPU: L2 cache: 512K
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: After vendor init, caps: bfebfbff 00000000 00000000 00000000
CPU: After generic, caps: bfebfbff 00000000 00000000 00000000
CPU: Common caps: bfebfbff 00000000 00000000 00000000
CPU: Intel(R) Xeon(TM) CPU 2.80GHz stepping 07
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
mtrr: v1.40 (20010327) Richard Gooch (rgooch@atnf.csiro.au)
mtrr: detected mtrr type: Intel
PCI: PCI BIOS revision 2.10 entry at 0xf0094, last bus=9
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: Discovered peer bus 01
PCI: Discovered peer bus 02
PCI: Discovered peer bus 06
PCI: Device 00:00 not found by BIOS
PCI: Device 00:01 not found by BIOS
PCI: Device 00:02 not found by BIOS
PCI: Device 00:78 not found by BIOS
PCI: Device 00:7b not found by BIOS
PCI: Device 00:80 not found by BIOS
PCI: Device 00:82 not found by BIOS
PCI: Device 00:88 not found by BIOS
PCI: Device 00:8a not found by BIOS
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
apm: BIOS not found.
mxt_scan_bios: enter
Starting kswapd v1.8
allocated 64 pages and 64 bhs reserved for the highmem bounces
VFS: Diskquotas version dquot_6.5.0 initialized
pty: 2048 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with MANY_PORTS MULTIPORT SHARE_IRQ SERIAL_PCI ISAPNP enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
Real Time Clock Driver v1.10d
block: queued sectors max/low 1022272kB/891200kB, 3008 slots per queue
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz PCI bus speed for PIO modes; override with idebus=xx
ServerWorks CSB5: IDE controller on PCI bus 00 dev 79
ServerWorks CSB5: chipset revision 147
ServerWorks CSB5: not 100% native mode: will probe irqs later
ServerWorks CSB5: simplex device: DMA disabled
ide0: ServerWorks CSB5 Bus-Master DMA disabled (BIOS)
ServerWorks CSB5: simplex device: DMA disabled
ide1: ServerWorks CSB5 Bus-Master DMA disabled (BIOS)
hda: CD-224E, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide-floppy driver 0.97
Floppy drive(s): fd0 is 1.44M
FDC 0 is a National Semiconductor PC87306
ide-floppy driver 0.97
md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 16384 buckets, 128Kbytes
TCP: Hash tables configured (established 524288 bind 65536)
Linux IP multicast router 0.06 plus PIM-SM
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
RAMDISK: Compressed image found at block 0
Freeing initrd memory: 397k freed
VFS: Mounted root (ext2 filesystem).
SCSI subsystem driver Revision: 1.00
Compaq CISS Driver (v 2.4.6)
cciss: Device 0xb178 has been found at bus 1 dev 3 func 0
blocks= 71122560 block_size= 512
heads= 255, sectors= 32, cylinders= 8716

Partition check:
cciss/c0d0: p1 p2 p3 p4 < p5 p6 p7 >
Journalled Block Device driver loaded
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
Freeing unused kernel memory: 220k freed
Adding Swap: 2044056k swap-space (priority -1)
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
usb-ohci.c: USB OHCI at membase 0xf8958000, IRQ 7
usb-ohci.c: usb-00:0f.2, ServerWorks OSB4/CSB5 OHCI USB Controller
usb.c: new USB bus registered, assigned bus number 1
hub.c: USB hub found
hub.c: 4 ports detected
usb-ohci.c: v5.2:USB OHCI Host Controller Driver
EXT3 FS 2.4-0.9.8, 25 Aug 2001 on cciss0(104,5), internal journal
kjournald starting. Commit interval 5 seconds
EXT3 FS 2.4-0.9.8, 25 Aug 2001 on cciss0(104,2), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting. Commit interval 5 seconds
EXT3 FS 2.4-0.9.8, 25 Aug 2001 on cciss0(104,1), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting. Commit interval 5 seconds
EXT3 FS 2.4-0.9.8, 25 Aug 2001 on cciss0(104,7), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting. Commit interval 5 seconds
EXT3 FS 2.4-0.9.8, 25 Aug 2001 on cciss0(104,3), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
Broadcom Gigabit Ethernet Driver bcm5700 with Broadcom NIC Extension (NICE) ver. 6.0.2d (02/14/03)
eth0: HP NC7781 Gigabit Server Adapter found at mem f7ef0000, IRQ 11, node addr 000000000000
eth0: Broadcom BCM5703 Integrated Copper transceiver found
eth0: Scatter-gather ON, 64-bit DMA ON, Tx Checksum ON, Rx Checksum ON
eth1: HP NC7781 Gigabit Server Adapter found at mem f7ee0000, IRQ 15, node addr 000000000000
eth1: Broadcom BCM5703 Integrated Copper transceiver found
eth1: Scatter-gather ON, 64-bit DMA ON, Tx Checksum ON, Rx Checksum ON
bcm5700: eth0 NIC Link is UP, 100 Mbps full duplex
bcm5700: eth1 NIC Link is UP, 100 Mbps full duplex
bcm5700: eth0 NIC Link is Down
bcm5700: eth0 NIC Link is Up, 100 Mbps full duplex
hda: bad special flag: 0x03
#

Yes, the server it's working now, and I can connect it with one ssh.

If I have to stop the service network and remove the module of net card... what instruccions do I have to do??

Thanks!!!
Carmen.