LINUX查看网卡带宽（100M还是1000M）命令

上一篇 / 下一篇 2013-07-15 10:27:41 / 个人分类：LINUX

如何不被忽悠？linux/centos如何查看网卡是100M还是1000M？检查100兆还是千兆（1GBPS）带宽接入，请看下面命令51Testing软件测试网:ay(A.LO

[root@www.ctohome.com]# mii-tool -V
+PZZ Np0mii-tool.c 1.9 2000/04/28 00:56:08 (David Hinds)
)CP#g6Rq:B[,I4g0SIOCGMIIREG on eth0 failed: Input/output error51Testing软件测试网~fw!Ta.L
eth0: negotiated 100baseTx-FD, link ok51Testing软件测试网3H8Xp8Q"cs8}E

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h)}Z2V&}JB0[root@www.ctohome.com]#mii-tool -v
v4@x5Zijo0SIOCGMIIREG on eth0 failed: Input/output error
eth0: negotiated 100baseTx-FD, link ok
!e1dj1KO1{v*sX0 product info: vendor 00:aa:00, model 57 rev 0
7W'^+P*I3hU0 basic mode: autonegotiation enabled
%{7oEFSx7R0 basic status: autonegotiation complete, link ok
*|(PtFFhc!fR o(ZS0 capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
0E`:OWGC.Lq0 advertising: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control
;H B&D,s hS\ u(j@b0 link partner: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD

Y,rz~7\,P0
1x uCrT:`-T0[root@www.ctohome.com]#ethtool eth0
Settings for eth0:
        Supported ports: [ TP ]
&?b*\ ^Y9J0        Supported link modes:   10baseT/Half 10baseT/Full
4k*} x@K0                                100baseT/Half 100baseT/Full
                                1000baseT/Full
{5NzR#v4r~ x%@%u0        Supports auto-negotiation: Yes51Testing软件测试网gJU9W9V2k"p!B
        Advertised link modes: 10baseT/Half 10baseT/Full
u0I{Cp!q0                                100baseT/Half 100baseT/Full51Testing软件测试网Dx+zHy
                                1000baseT/Full
        Advertised auto-negotiation: Yes
pmOD9@v:h:Cb0D0        Speed: 100Mb/s
p r&C*et \ v y6V0        Duplex: Full
C[tk*jl0        Port: Twisted Pair51Testing软件测试网0\$C!jW2M
        PHYAD: 151Testing软件测试网~_/n9xE \
        Transceiver: internal51Testing软件测试网%eAM\E4W
        Auto-negotiation: on51Testing软件测试网$Z}k0R2p0U!i
        Supports Wake-on: pumbag
[*\fa~ Dt0        Wake-on: g
NOH-{i/X{i0        Current message level: 0x00000001 (1)
        Link detected: yes

q:r0aZ*T2dp z0要测试是否是1000M端口，最保险的说用wget测试一个对方的带宽足够大的下载地址：

jqrJc3r0wget http://cachefly.cachefly.net/100mb.test51Testing软件测试网!d6d$C3@$OX4l
--2011-03-14 22:19:12-- http://cachefly.cachefly.net/100mb.test
3vzqo2Y%H#b/X%[2H0Resolving cachefly.cachefly.net... 205.234.175.175
P&Cl+fHW6M U@0Connecting to cachefly.cachefly.net|205.234.175.175|:80... connected.
8Pz}]Y,Ge(nEX0HTTP request sent, awaiting response... 200 OK
Length: 104857600 (100M) [application/octet-stream]
2FeKT H x` W0Saving to: `100mb.test.2'
bPfaC)C0
100%[===================================================================================================================>] 104,857,600 39.1M/s in 2.6s 51Testing软件测试网ks6J1[3T@S

i9j.yLj/F$KRt.\r7A02011-03-14 22:19:14 (39.1 MB/s) - `100mb.test.2' saved [104857600/104857600]

0g!r\$A{+u ])J%q j{0如果下载速度能超过15MB/s，那么不是100M端口了，通常就是1000M端口
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如果是独立服务器，可以通过下面命令核查网卡端口：

51Testing软件测试网DA5`"F}
[root@www.ctohome.com ]#ethtool eth0
hQ"gFh+y!c5bLB`0Settings for eth0:
{p$]la|0        Supported ports: [ TP ]
y"^Yoi&a0        Supported link modes:   10baseT/Half 10baseT/Full
qjK#VH S:\ Xe0                                100baseT/Half 100baseT/Full
&YW?Xt}7m0                                1000baseT/Full
        Supports auto-negotiation: Yes
MwG5a'U0        Advertised link modes: 10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full51Testing软件测试网M2Fg&ESR8l
        Advertised auto-negotiation: Yes
.A(Ycnl)fhh0       Speed: 1000Mb/s
T QKDl4N&~3M(P\7B0        Duplex: Full
T] NFw'W!qe W0        Port: Twisted Pair
*\/u4T^5{8j"mAp;w8L0        PHYAD: 1
?YxFKbhD.`0        Transceiver: internal
B9Pn"Ei}v5d0        Auto-negotiation: on
{Y C0v!wd0        Supports Wake-on: pumbag51Testing软件测试网*]}%WF Y'tkS
        Wake-on: g
        Current message level: 0x00000001 (1)51Testing软件测试网%H,Z.VWH$^"j
        Link detected: yes51Testing软件测试网At(v$hE