vlans / CentOS 4.5 / Dell 6248 switch

[arjen <arjen-mlist@xxxxxxx>]

Hi,

I am trying to configure vlans on my CentOS 4.5 box. I am able to create 
a vlan on eth1

eth1 is up but no IP address
eth1.2 is a vlan interface with address 10.0.0.78 that has set a route 
for 10.0.0.72/255.255.255.248 (shows up in the routing table)
no iptables or other packet filtering mechanism for the moment
interface connected to a Dell PowerConnect 6248 to a port that is in a 
configured VLAN on the switch consisting of four switchports. Two hosts 
are connected to the same VLAN on the switch, having IP addresses 
10.0.0.77 and 10.0.0.76.

If I destroy the vlan on the Linux box and set 10.0.0.78 directly on the 
NIC I can reach both 10.0.0.77 and 10.0.0.76. If i try to route through 
the vlan as described above I cannot. Tcpdump while pinging shows arp 
requests on the vlan interface. The eth1 nic is a Broadcom Corporation 
NetXtreme II BCM5708. Kernel is 2.6.9-55.ELsmp from RedHat rebuilt by 
CentOS.

Can anybody provide me with a hint?

Thanks,
Arjen Van Drie.


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