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ethernet link issue:
hi,
i am unable to get ethernet port on linux up, even though it is connected to a switch and the switch side link says its UP.
the speed and duplex settings on linux seem to be incorrect, even though i tried to manually set it using:
ethtool -s eth2 speed 100 duplex full
The speed and duplex show as invalid in ethtool eth2 output.
How can i fix this?
root@localhost:/sys/class/net> ethtool eth2
Settings for eth2:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 100baseT/Full
Advertised auto-negotiation: Yes
Speed: Unknown! (65535)
Duplex: Unknown! (255)
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: g
Wake-on: g
Link detected: no
dmesg |grep eth2
eth2: Broadcom NetXtreme II BCM5709 1000Base-T (C0) PCI Express found at mem b4000000, IRQ 35, node addr 00:10:18:64:e6:70
ADDRCONF(NETDEV_UP): eth2: link is not ready
bnx2: eth2 NIC Copper Link is Up, 100 Mbps full duplex
ADDRCONF(NETDEV_CHANGE): eth2: link becomes ready
eth2: no IPv6 routers present
bnx2: eth2 NIC Copper Link is Down
bnx2: eth2 NIC Copper Link is Up, 100 Mbps full duplex
bnx2: eth2 NIC Copper Link is Down
bnx2: eth2 NIC Copper Link is Up, 100 Mbps full duplex
bnx2: eth2 NIC Copper Link is Down
bnx2: eth2 NIC Copper Link is Up, 100 Mbps full duplex
bnx2: eth2 NIC Copper Link is Down
Switch the linux box is connected to:
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vdi-s1#sh int f0/18
FastEthernet0/18 is up, line protocol is up (connected)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 100BaseTX
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Hi,
Maybe it is the switch port that is giving bad information to the eth2 link?
Try disabling autoneg?
Code:
ethtool -s eth2 autoneg off
And then like you did earlier:
Code:
ethtool -s eth2 speed 100 duplex full
** edit:Ah you just edited your post with more information.
As I see you eth2 has no link detected are u sure you are trying the correct eth card?
Show us:
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root@localhost:/sys/class/net> ifconfig
eth0 Link encap:Ethernet HWaddr C4:7D:4F:7C:A6:FE
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:56911 errors:0 dropped:0 overruns:0 frame:0
TX packets:170629 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:3774025 (3.5 MiB) TX bytes:18017846 (17.1 MiB)
eth2 Link encap:Ethernet HWaddr 00:10:18:64:E6:70
inet addr:172.20.231.187 Bcast:172.20.231.255 Mask:255.255.255.128
inet6 addr: fe80::210:18ff:fe64:e670/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:492 (492.0 b)
Interrupt:35 Memory:b4000000-b4012800
