I have an 887VAW. Only 1 interface of the fastethernet ports was connected. Up till now I just need the 1 VLAN (VLAN10), so it was configured as an access port. However needs change.
So I configured fastethernet0 with
interface FastEthernet0
switchport access vlan 10
switchport trunk native vlan 10
switchport trunk allowed vlan 1,2,101,1002-1005
no ip address
All good so far... But when I added
interface FastEthernet0
switchport mode trunk
All traffic stopped... Weird I thought, but OK, maybe it has an issue with switching from access to trunk even though VLAN10 is the access plan AND the native when trunked.. so I found a spare port on the switch. Plugged it into FastEthernet1 and added
interface FastEthernet1
switchport trunk allowed vlan 1,2,66,1002-1005
no ip address
VLAN66 is the new VLAN I want to use. All good so far again... Add
interface FastEthernet1
switchport mode trunk
And bang... Loss of contact on VLAN10 again...
Any ideas? Why the heck does the router stop responding to VLAN10 (Configured as)
interface Vlan10
ip address 192.168.254.128 255.255.255.0
ip flow ingress
ip nat inside
ip inspect CBAC in
no ip virtual-reassembly in
ip route-cache policy
ip tcp adjust-mss 1452
when one of the ports is changed to a trunk instead of access?