Questions about 'ip link set DEV_NAME name DEV_NEWNAME'

Questions about 'ip link set DEV_NAME name DEV_NEWNAME'

[申晓欢]

I'm using command 'ip link set ge0/0 name ge5/1' to rename interface name
from ge0/0 to ge5/0. when command complete, command 'ifconfig' and 'cat
/proc/net/dev ' both can output information of ge5/0,however command 'ls
/sys/class/net/' output "ls: /sys/class/net/ge5/0: No such file or
directory".
     There is no udev in my device, until to now command 'ip link' is the
only way to change interface name. 
     Anyone know solution to my problem, please give me some advice, thanks!

Re: Questions about 'ip link set DEV_NAME name DEV_NEWNAME'

[Stephen Hemminger]

On Mon, 15 Jun 2015 21:25:30 +0800
申晓欢 <sxhlinux@163.com> wrote:

> I'm using command 'ip link set ge0/0 name ge5/1' to rename interface name
> from ge0/0 to ge5/0. when command complete, command 'ifconfig' and 'cat
> /proc/net/dev ' both can output information of ge5/0,however command 'ls
> /sys/class/net/' output "ls: /sys/class/net/ge5/0: No such file or
> directory".
>      There is no udev in my device, until to now command 'ip link' is the
> only way to change interface name. 
>      Anyone know solution to my problem, please give me some advice, thanks!
> 
> 
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Slashes are not allowed in network names on Linux because slash is
used as a file separator in sysfs. In normal Linux any attempt to
create or rename an interface to something with slash in it is rejected
with "Invalid argument"

I suspect you are using some vendor modified kernel (Juniper or Cisco?) which
allows slash in filenames because how else would you get ge0/0.
If so, contact them it is there problem.