[iproute2] display vlan configuration

3 messages, 2 authors, 2012-07-07 · open the first message on its own page

[iproute2] display vlan configuration

From: Fabien C. <hidden>
Date: 2012-07-05 23:06:30

Hello, 

it looks like there is no way to show the vlan configuration with iproute (nor with any other tool apparently). 

This can lead to trouble since : 
 # ip link add link eth0 name eth2.333 type vlan id 444

will create an interface that will show up like this with "ip link show" : 
 51: eth2.333@eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN

The only hint we have is the interface name, which may not be related to the vlan id we set earlier. 

Is there any way to get that information? 

Thanks, 
Fabien 

Re: [iproute2] display vlan configuration

From: John Fastabend <hidden>
Date: 2012-07-05 23:20:40

On 7/5/2012 4:06 PM, Fabien C. wrote:
Hello,

it looks like there is no way to show the vlan configuration with iproute (nor with any other tool apparently).

This can lead to trouble since :
  # ip link add link eth0 name eth2.333 type vlan id 444

will create an interface that will show up like this with "ip link show" :
  51: eth2.333@eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN

The only hint we have is the interface name, which may not be related to the vlan id we set earlier.
Here you need to show the details,

#ip -d link show dev eth2.333

 From my current setup,

# ip -d link show dev vlan0
33: vlan0@eth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
     link/ether 00:1b:21:55:23:59 brd ff:ff:ff:ff:ff:ff
     vlan id 101 <REORDER_HDR>

Re: [iproute2] display vlan configuration

From: Fabien C. <hidden>
Date: 2012-07-07 16:03:59

Le 06/07/2012 01:20, John Fastabend a écrit :
Here you need to show the details,
#ip -d link show dev eth2.333
Thanks for your answer! 

The man page doesn't document this option (-d), but "ip help" does, so I guess I didn't search enough. 

Fabien 
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