vlan - pls help

ann kok annkok2001 at yahoo.com
Tue Jun 14 16:45:48 GMT 2005

Hi all

Thank you for your help and info
the url is useful and same as what I did

Any help is much appreciated:

I used the tcpdump in the freebsd box
the freebox is receiving the linux box

but why they can't ping each other!

in freebsd box. ping
PING ( 56 data bytes
ping: sendto: Host is down
ping: sendto: Host is down

but itself is fine 
PING ( 56 data bytes
64 bytes from icmp_seq=0 ttl=64
time=0.019 ms

For the mac address of all vlans, it should be same as
the parant interface. 
but I am new for it. Sorry


tcpdump -ei em1
tcpdump: WARNING: em1: no IPv4 address assigned
tcpdump: listening on em1
12:36:51.586368 0:3:47:c1:96:ca Broadcast arp 60: arp
who-has tell
12:36:52.586217 0:3:47:c1:96:ca Broadcast arp 60: arp
who-has tell
12:36:53.586346 0:3:47:c1:96:ca Broadcast arp 60: arp
who-has tell
12:36:54.585972 0:3:47:c1:96:ca Broadcast arp 60: arp
who-has tell

Thank you

--- Wolfgang Lausenbart <wmiuser at m-net.arbornet.org>

> Hi ann,
> as few/far as I know, you cannot ping from one vlan 
> to another. thats the clue. you have to free the
> ports
> on the switch to allow trunking.
> I used this
> howto, and could send vlan frames, but I am
> not sure if they are working. (no hardware yet)
> In the howto above a cisco device is configured.
> The em(4)driver is vlan capable, you should see
> something like VLAN_MTU
> next to UP,BROADCAST and so on. you should be
> capable to generate
> 8021.q Frames.
> btw. you used the same arp adresses. does this make
> sense?
> I asked that here: 
> good look 
> wmiuser/u at netbeisser.de
> --Nq2Wo0NMKNjxTN9z
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