Linux-4.查看网卡信息,状态

Linux-4.查看网卡信息

1.查看有几张网卡，也能看出网卡控制器的制造商信息
lspci | grep -i -E --color 'network|ethernet'

【实例】
root@demohost:~# lspci |grep -i eth
02:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5716 Gigabit Ethernet (rev 20)
02:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM5716 Gigabit Ethernet (rev 20)
04:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet (rev 20)
04:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet (rev 20)
2张网卡

root@Yuanji-Debian-171:~# lspci |grep -i eth
02:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5716 Gigabit Ethernet (rev 20)
02:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM5716 Gigabit Ethernet (rev 20)
1张网卡

2.可以使用lshw，
（系统没有自带，需要安装Debian：apt-get install lshw。 Centos： yum install lshw）
lshw -class network

【实例】
root@Yuanji-Debian-171:~# lshw -class network
*-network:0
description: Ethernet interface
product: NetXtreme II BCM5716 Gigabit Ethernet
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:02:00.0
logical name: eth0
version: 20
serial: 78:2b:cb:58:74:5f
size: 1GB/s
capacity: 1GB/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi msix pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=bnx2 driverversion=2.0.2 duplex=full firmware=5.2.3 NCSI 2.0.11 ip=192.168.4.171 latency=0 link=yes multicast=yes port=twisted pair speed=1GB/s
resources: irq:16 memory:da000000-dbffffff
*-network:1 DISABLED
description: Ethernet interface
product: NetXtreme II BCM5716 Gigabit Ethernet
vendor: Broadcom Corporation
physical id: 0.1
bus info: pci@0000:02:00.1
logical name: eth1
version: 20
serial: 78:2b:cb:58:74:60
capacity: 1GB/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi msix pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=bnx2 driverversion=2.0.2 duplex=half firmware=5.2.3 NCSI 2.0.11 latency=0 link=no multicast=yes port=twisted pair
resources: irq:17 memory:dc000000-ddffffff

root@demohost:~# lshw -class network
*-network:0
description: Ethernet interface
product: NetXtreme II BCM5709 Gigabit Ethernet
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:04:00.0
logical name: eth0
version: 20
serial: 00:10:18:b3:75:ec
size: 1GB/s
capacity: 1GB/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi msix pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=bnx2 driverversion=2.0.2 duplex=full firmware=5.2.3 ip=192.168.4.178 latency=0 link=yes multicast=yes port=twisted pair speed=1GB/s
resources: irq:16 memory:d6000000-d7ffffff
*-network:1 DISABLED
description: Ethernet interface
product: NetXtreme II BCM5709 Gigabit Ethernet
vendor: Broadcom Corporation
physical id: 0.1
bus info: pci@0000:04:00.1
logical name: eth1
version: 20
serial: 00:10:18:b3:75:ee
capacity: 1GB/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi msix pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=bnx2 driverversion=2.0.2 duplex=half firmware=5.2.3 latency=0 link=no multicast=yes port=twisted pair
resources: irq:17 memory:d8000000-d9ffffff
*-network:0 DISABLED
description: Ethernet interface
product: NetXtreme II BCM5716 Gigabit Ethernet
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:02:00.0
logical name: eth2
version: 20
serial: 78:2b:cb:58:76:7d
capacity: 1GB/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi msix pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=bnx2 driverversion=2.0.2 duplex=half firmware=5.2.3 NCSI 2.0.11 latency=0 link=no multicast=yes port=twisted pair
resources: irq:16 memory:da000000-dbffffff
*-network:1 DISABLED
description: Ethernet interface
product: NetXtreme II BCM5716 Gigabit Ethernet
vendor: Broadcom Corporation
physical id: 0.1
bus info: pci@0000:02:00.1
logical name: eth3
version: 20
serial: 78:2b:cb:58:76:7e
capacity: 1GB/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi msix pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=bnx2 driverversion=2.0.2 duplex=half firmware=5.2.3 NCSI 2.0.11 latency=0 link=no multicast=yes port=twisted pair
resources: irq:17 memory:dc000000-ddffffff

【个人常用】
-html output hardware tree as HTML
-xml output hardware tree as XML

lshw -html > /home/hwinfo.html
lshw -xml > /home/info.xml

【实例】

使用脚本，每天凌晨自动执行lshw -xml > /home/info+`date +%Y%m%d-%H%M%S`.xml
1>备份最原始的xml 作为资产管理

2>脚本对比当天和昨天的 XXX.xml
3>如果有不同，将信息传回到公司,资产日志更新

3.查看非常详细的信息
lspci -vvv # 3个小写的v
【实例】
root@Yuanji-Debian-171:~# lspci -vvv | grep -i -E '(net|eth)' -A 50
02:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5716 Gigabit Ethernet (rev 20)
Subsystem: Dell Device 02a3
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 16
Region 0: Memory at da000000 (64-bit, non-prefetchable) [size=32M]
Capabilities: [48] Power Management version 3
---下面内容忽略，内容太长
Kernel driver in use: bnx2 #驱动
--
02:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM5716 Gigabit Ethernet (rev 20)
Subsystem: Dell Device 02a3
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin B routed to IRQ 17
Region 0: Memory at dc000000 (64-bit, non-prefetchable) [size=32M]
Capabilities: [48] Power Management version 3
---下面内容忽略，内容太长
Kernel driver in use: bnx2 #驱动

4.查看网卡当前状态
mii-tool 【通常用于 机房上架后网卡连接的检查】 ，网线是否连接，以及当前传送速度（1000baseT-FD）
【实例】
root@demohost:~# mii-tool
eth0: negotiated 1000baseT-FD flow-control, link ok
SIOCGMIIPHY on 'eth1' failed: Resource temporarily unavailable
SIOCGMIIPHY on 'eth2' failed: Resource temporarily unavailable
SIOCGMIIPHY on 'eth3' failed: Resource temporarily unavailable

5.查看网卡驱动
ethtool

root@demohost:~# ethtool -i eth0
driver: bnx2
version: 2.0.2
firmware-version: 5.2.3
bus-info: 0000:04:00.0
root@demohost:~# ethtool -i eth2
driver: bnx2
version: 2.0.2
firmware-version: 5.2.3 NCSI 2.0.11
bus-info: 0000:02:00.0

6.从开机信息中查看网卡
# dmesg | grep -i eth
【实例】
root@demohost:/var/log# dmesg | grep -i --color eth
[ 1.162042] Broadcom NetXtreme II Gigabit Ethernet Driver bnx2 v2.0.2 (Aug 21, 2009)
[ 1.164195] eth0: Broadcom NetXtreme II BCM5709 1000Base-T (C0) PCI Express found at mem d6000000, IRQ 16, node addr 00:10:18:b3:75:ec
[ 1.166331] eth1: Broadcom NetXtreme II BCM5709 1000Base-T (C0) PCI Express found at mem d8000000, IRQ 17, node addr 00:10:18:b3:75:ee
[ 1.168236] eth2: Broadcom NetXtreme II BCM5716 1000Base-T (C0) PCI Express found at mem da000000, IRQ 16, node addr 78:2b:cb:58:76:7d
[ 1.170235] eth3: Broadcom NetXtreme II BCM5716 1000Base-T (C0) PCI Express found at mem dc000000, IRQ 17, node addr 78:2b:cb:58:76:7e
[ 12.021967] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PMI0._GHL] (Node ffff88023fc2bd40), AE_NOT_EXIST
[ 12.021981] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PMI0._PMC] (Node ffff88023fc2bcc0), AE_NOT_EXIST
[ 41.295829] bnx2: eth0: using MSIX
[ 41.296444] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 44.413942] bnx2: eth0 NIC Copper Link is Up, 1000 Mbps full duplex
[ 44.414627] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

===========================
mii-tool，ethtool 详细说明
以及/proc/net/dev
/proc/interrupts | grep ethX
虚拟网卡
网卡参数的修改
网卡流量的查看
会在后面后续文章说到

以上是个人点点总结和理解，水平不高，文笔水平很烂，请各位大大见谅。
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