vlan and different MAC's

[wmiuser at m-net.arbornet.org]

Hello List,




I am running FreeBSD-5.4 on my r51,
While partially following (no ciso here),

http://www.expresshosting.net/howto/VLAN-802.1q-Tagging-in...

I sucessfully created vlan-devices and thought it to be a good idea,
to give each of them a different MAC-address.


now maybe that's wrong?=20


1) Is the parent interface' (em0) MAC-address required?

2) If I assign different macs, then multicast should be fine, as
   it operates inside the vlan's?

3) what devices are needed to simulate vlans/multicast/ospf/bgp
   between 3 stations? While playing around, I found 802.1q Frames
   running (*), but I am not sure If they are correctly working?
   On the other side sits a linux box

4) why cdp tells about the vlan's to the world. shouldn't it simply
   shutup :-) and detect/ask for cisco devices? A friend spoke
   of it as a newsticker.

5) can someone give me an example of using ping -I ?
   I get: "invalid multicast Interface ..."

6) why is multicast in mrouted(5) setup via tunnels?

7) would I need pmtu to get things working?=20

8) another question: why the hell would a printer send me icmp_redirects?


9) if two hosts belong to the same vlan, I should
   get a ping established between them,  right?



*)  =20
03:24:14.785816 192.168.3.1 > 224.0.0.4: igmp dvmrp Probe [tos 0xc0]  [ttl =
1]
03:24:14.785856 802.1Q vlan#105 P0 192.168.10.1 > 224.0.0.4: igmp dvmrp Pro=
be [tos 0xc0]  [ttl 1]
03:24:14.785890 802.1Q vlan#106 P0 192.168.20.1 > 224.0.0.4: igmp dvmrp Pro=
be [tos 0xc0]  [ttl 1]
03:24:14.785916 192.168.30.74 > 224.0.0.4: igmp dvmrp Probe [tos 0xc0]  [tt=
l 1]
03:24:14.785946 802.1Q vlan#108 P0 192.168.40.3 > 224.0.0.4: igmp dvmrp Pro=
be [tos 0xc0]  [ttl 1]

only probes are sent out, but I expected to see 224.0.0.4 > 192.168.10.1 ...


thanx for your time and
best regards,

wmiuser/u at netbeisser.de


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