Configure cisco 2950 interface?

Hi Experts,

I have a cisco 2950 24 ports, I'd like configure the interface fastEthernet 0/5 which allows only 2 VLANs can go thru, these vlan are 8 and 9.

The VLAN 8 is our voice vlan and vlan 9 is our office internet.


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conf t
int fa0/5
switchport access vlan 9
switchport voice vlan 8
interface FastEthernet0/1/5
 description -= ---------------------- =-  you can put anything
 switchport trunk allowed vlan 8,9,1002-1005
 switchport mode trunk

Something like this...

conf t
int fa0/5
switchport trunk encapsulation dot1q
switchport mode trunk
switchport allowed vlans 8, 9
switchport access vlan 9
switchport voice vlan 8
spanning-tree portfast
spanning-tree bpduguard enable
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SJCAAuthor Commented:
I got this when I was trying to do this:

switch(config-if)#switchport trunk allowed vlan 8,9
Command rejected: Bad VLAN allowed list.
VLANs 1,1002-1005 are required.

It seems that I have to include vlan 1, 1002-1005. Any ideas why it requires me to do add those extra vlans?

For 'Spanning-tree portfast', I thought we only need it when we are not on trunk mode?!
The 2900 series have a few different ways of doing things, some commands are different depending on model and firmware level.

Vlans 1002 - 1005 are used by the system.  Most switches just include them automatically, but the 2900's tend to be a bit different.

"Spanning-tree portfast" can be used in trunk mode if the attached device is not a switch, or other network device
SJCAAuthor Commented:
I have a NEC phone (VoIP phone), it has  2 ethernet ports (port A and B) on its back, I was told that the port A will go to  int 0/5 and port B will go to my PC.

Here is the map:
Cisco 2950 int 0/5 -->phone --> my PC.

Is this phone considered a switch too? and do I still need to set 'spanning-tree portfast' for the int 0/5?
No, a daisy chained phone+PC is considered an end-device, not a switch.

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