# Ethtool command not working **URL:** \ **Category:** UNIX for Beginners Q & A\ **Created:** [November 21, 2019, 11:56am UTC](https://community.unix.com/t/ethtool-command-not-working/376740 "2019-11-21T11:56:22Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![sravani25](https://community.unix.com/letter_avatar/sravani25/32/5_5575768a8748004e209b776fc1b2916d.png) [@sravani25](https://community.unix.com/u/sravani25)\ **Post date:** [November 21, 2019, 11:56am UTC](https://community.unix.com/t/ethtool-command-not-working/376740/1 "2019-11-21T11:56:22Z")
Hi All, I am trying to find my NIC card speed in centos 5. But i am unable to get the info using ethtool command. ```nohighlight # ethtool eth0 Settings for eth0: Link detected: yes ``` and even tried to look for the file `# cd /sys/class/net/eth0/speed` files which is also not available. Is there any other command/file where we can get the NIC card speed ?. Can someone please help on this issue. ---
**Author:** ![Neo](https://community.unix.com/user_avatar/community.unix.com/neo/32/22838_2.png) [@Neo](https://community.unix.com/u/Neo)\ **Post date:** [November 21, 2019, 12:11pm UTC](https://community.unix.com/t/ethtool-command-not-working/376740/2 "2019-11-21T12:11:03Z")
Please post the output of `ifconfig -a` . Thanks. For example, on my server I had to take the exact entry identified in ifconfig to get this: ```nohighlight ubuntu:/tmp# ethtool enp1s0 Settings for enp1s0: Supported ports: [TP MII] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Supported FEC modes: Not reported Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertised pause frame use: Symmetric Receive-only Advertised auto-negotiation: Yes Advertised FEC modes: Not reported Link partner advertised link modes: 1000baseT/Full Link partner advertised pause frame use: No Link partner advertised auto-negotiation: Yes Link partner advertised FEC modes: Not reported Speed: 1000Mb/s Duplex: Full Port: MII PHYAD: 0 Transceiver: internal Auto-negotiation: on Supports Wake-on: pumbg Wake-on: d Current message level: 0x00000033 (51) drv probe ifdown ifup Link detected: yes ``` So, please post the output of `ifconfig -a` first. ---
**Author:** ![sravani25](https://community.unix.com/letter_avatar/sravani25/32/5_5575768a8748004e209b776fc1b2916d.png) [@sravani25](https://community.unix.com/u/sravani25)\ **Post date:** [November 21, 2019, 12:16pm UTC](https://community.unix.com/t/ethtool-command-not-working/376740/3 "2019-11-21T12:16:26Z")
Hi Neo, ethtool is not giving full ouput as i expected in centos5. i already checked ifconfig ouput. Below is the ifconfig -a output on my server. ```nohighlight # ifconfig -a eth0 Link encap:Ethernet HWaddr 0A:5E:09:6D:62:86 inet addr:172.31.3.187 Bcast:172.31.15.255 Mask:255.255.240.0 inet6 addr: fe80::85e:9ff:fe6d:6286/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:9001 Metric:1 RX packets:1908 errors:0 dropped:0 overruns:0 frame:0 TX packets:1549 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:145879 (142.4 KiB) TX bytes:165241 (161.3 KiB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) ``` ---
**Author:** ![Neo](https://community.unix.com/user_avatar/community.unix.com/neo/32/22838_2.png) [@Neo](https://community.unix.com/u/Neo)\ **Post date:** [November 21, 2019, 12:23pm UTC](https://community.unix.com/t/ethtool-command-not-working/376740/4 "2019-11-21T12:23:05Z")
Thanks and I see you are running as root, so that should not be an issue. Let me think about this (bedtime) and if another person does not come up with a better idea, I'll post back. ---
**Author:** ![Peasant](https://community.unix.com/user_avatar/community.unix.com/peasant/32/2251_2.png) [@Peasant](https://community.unix.com/u/Peasant)\ **Post date:** [November 21, 2019, 12:31pm UTC](https://community.unix.com/t/ethtool-command-not-working/376740/5 "2019-11-21T12:31:22Z")
Is this virtual machine and if yes on what platform ? If not, what driver is running for that card, which kind of card is it. Do you have access to `lspci` command from pciutils ? Hope that helps Regards Peasant. ---
**Author:** ![sravani25](https://community.unix.com/letter_avatar/sravani25/32/5_5575768a8748004e209b776fc1b2916d.png) [@sravani25](https://community.unix.com/u/sravani25)\ **Post date:** [November 21, 2019, 12:37pm UTC](https://community.unix.com/t/ethtool-command-not-working/376740/6 "2019-11-21T12:37:48Z")
Hi, I am running my centos 5 in AWS. ```nohighlight # ethtool -i eth0 driver: netfront version: firmware-version: bus-info: vif-0 ``` ---
**Author:** ![Neo](https://community.unix.com/user_avatar/community.unix.com/neo/32/22838_2.png) [@Neo](https://community.unix.com/u/Neo)\ **Post date:** [November 21, 2019, 12:44pm UTC](https://community.unix.com/t/ethtool-command-not-working/376740/7 "2019-11-21T12:44:02Z")
LOL... Why would you expect to be able to read detailed hardware information for an AWS server configuration when you are but a slice of a virtualization? ---
**Author:** ![sravani25](https://community.unix.com/letter_avatar/sravani25/32/5_5575768a8748004e209b776fc1b2916d.png) [@sravani25](https://community.unix.com/u/sravani25)\ **Post date:** [November 21, 2019, 1:18pm UTC](https://community.unix.com/t/ethtool-command-not-working/376740/8 "2019-11-21T13:18:59Z")
Is it hard to find the NIC card speed info as well on aws ec2 instance ?. ---
**Author:** ![Neo](https://community.unix.com/user_avatar/community.unix.com/neo/32/22838_2.png) [@Neo](https://community.unix.com/u/Neo)\ **Post date:** [November 21, 2019, 9:22pm UTC](https://community.unix.com/t/ethtool-command-not-working/376740/9 "2019-11-21T21:22:17Z")
> [@sravani25](#): > > Is it hard to find the NIC card speed info as well on aws ec2 instance ?. You can contact Amazon for that information. You should also realize that a customer who pays for a slice of time on a server generally with not have any rights to the details of the underlying hardware. If you want rights to look into hardware, you should move off virtualized services and get a dedicated server. As I asked earlier, and I do expect an answer to this question: Why would you expect to be able to read detailed hardware information for an AWS server configuration when you are but a slice of a virtualization?