billn at billn
Mar 19, 2008, 1:40 PM
Post #3 of 3
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Re: do you know how to dump packet to see vlan info
[In reply to]
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You can use the 8021q module in linux, and the vlan tools to run an
interface as a dot1q trunk. I'm not sure off-hand about the other
distributions, but under Debian you just need the 'vlan' package.
modprobe 8021q
ifconfig eth1 up
vconfig add eth1 <vlan id>
ifconfig eth1.<vlan id> <ip address> netmask <netmask>
Configure your switch port to trunk mode, tag your vlans onto it, et
voila.
This will give you a presence in as many broadcast domains as you decide
to tag.
- billn
On Wed, 19 Mar 2008, Jon R. Kibler wrote:
> ann kok wrote:
>> Hi all
>>
>> I am using linux as router to connect to switch
>>
>> do you know how to dump packet to see vlan info?
>>
>> Thank you
>
> You won't see vlan info unless you are on a trunking port.
>
> Jon Kibler
>
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