Command Status
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05-19-2011 07:27 PM - edited 03-11-2019 01:35 PM
Hi,
Please confirm the following commands are using for which purpose?
interface FastEthernet0/4
description User Connection
switchport trunk encapsulation dot1q
switchport mode access
switchport voice vlan 102
no cdp enable
spanning-tree portfast
Is Switch Port configured as a Trunk Port or Access port and what V-LAN traffic being bypass via this port,
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NGFW Firewalls
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05-19-2011 07:29 PM
The last question was for the following commands. I used the wrong one commands:
interface FastEthernet0/5
description Uplink to WAN router
switchport access vlan 4
switchport trunk encapsulation dot1q
switchport mode access
switchport voice vlan 102
no cdp enable
spanning-tree portfast
Please confirm about the above commands and same question is applied in my previous post.
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05-19-2011 07:46 PM
This post should be on Lan switching. Im not quite sure, you can do a show interface trunk, if you see fastethernet listed, the port is functioning on trunk. Also, you can do a show vlan, and if the switchport is not assigned to vlan 4 as depicted, the port definetly is on trunk.
Mike.
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05-19-2011 08:50 PM
If the switch port is connected with router interface and the given commands are configured on switch port then is it possible that we could allow two V-LAN traffic through the router even you have tested that it's still in access mode.
I have fetch out this switch info from one of new customer and understanding why the given commands are using for which purpose as i also think that it should be working in a access mode until we configure switch port in trunk port.
Please confirm.
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05-19-2011 07:59 PM
Just tested, the port is in access.
Mike
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05-19-2011 08:51 PM
If the switch port is connected with router interface and the given commands are configured on switch port then is it possible that we could allow two V-LAN traffic through the router even you have tested that it's still in access mode.
I have fetch out this switch info from one of new customer and understanding why the given commands are using for which purpose as i also think that it should be working in a access mode until we configure switch port in trunk port.
Please confirm.
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07-30-2012 03:19 AM
Hi Bro
The configuration provided is done by someone who has no idea what they are doing. A trunk port would like like this, and like this only.
interface FastEthernet0/4
description Uplink Trunk Port
switchport trunk encapsulation dot1q
switchport mode trunk
switchport nonegotiate
spanning-tree portfast trunk
and a access port would look like this and like this only.
interface FastEthernet0/5
description User Connection (Voice / Data) --> Access Port
switchport access vlan 4
switchport mode access
switchport voice vlan 102
no cdp enable
spanning-tree portfastinterface FastEthernet0/6
description Uplink to WAN Router --> Access Port
switchport access vlan 4
switchport mode access
P/S: If you think this comment is helpful, please do rate them nicely :-)
Ramraj Sivagnanam Sivajanam
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07-30-2012 06:27 AM
Hi Ray,
This is not a valid trunk configuration. You cannot have trunk and access configured for the same interface.
Please do rate if the given information helps.
By
Karthik
