[Re: [Re: [nsp] 2950 & vlans]]

[Bruce Pinsky]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

joshua sahala wrote:

| replying to myself:
|
| joshua sahala <joshua.ej.smith at usa.net> wrote:
|
|
|>switch is a 2950 (12.1(13)EA1) - reagarding the server...it appears to
|>have a common mac (@#!^&*$%#@), i hadn't noticed that before you
|>mentioned it.  the switch sees that mac in vlan10 (inside vlan) - i am
|>looking through cisco.com to find out if it can handle a common mac.
|>i am also looking to see if i can get debian to use different mac
|>addresses on the interfaces (silly sun hardware) - i don't have any port
|>security enabled on the ports (it doesn't even appear to be available in
|>this version)
|
|
| from the switch i can ping both the inside and outside address, but
| the arp/mac entries both show up in vlan 10 (indide vlan)
|


IIRC, the 2950 supports only one instance of the MAC address across the
entire switch.  With Sun that can cause problems since they use the same
MAC across all interfaces unless you use an LAA.  Even on my SPARC with 3
physical interfaces, all have the same MAC.

Your in luck with Debian.  You can set your MAC address for the card using
ifconfig.  Here is an example:

eth2      Link encap:Ethernet  HWaddr 08:00:20:1A:D0:16
~          BROADCAST MULTICAST  MTU:1500  Metric:1
~          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
~          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
~          collisions:0 txqueuelen:100
~          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
~          Interrupt:55 Base address:0xd800

bep at son-of-spike% ifconfig eth2 hw ether 00:00:01:11:22:33

bep at son-of-spike% ifconfig eth2
eth2      Link encap:Ethernet  HWaddr 00:00:01:11:22:33
~          BROADCAST MULTICAST  MTU:1500  Metric:1
~          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
~          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
~          collisions:0 txqueuelen:100
~          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
~          Interrupt:55 Base address:0xd800

Try changing it to something else and see if your problem clears up.  Of
course, you will have to modify /etc/network/interfaces to have that
attribute so that it is retained across reboots.

- --
=========
bep

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.2 (MingW32)

iD8DBQE/19KNE1XcgMgrtyYRAiW2AJsGpb5JaGqPUG9TKGc0MJiMk4lJNACfY+F4
I4gqM34pihBOe5WpfO/G2pk=
=iX1w
-----END PGP SIGNATURE-----