02-19-2010 01:44 PM - edited 03-06-2019 09:48 AM
Just began configuring a WS-CBS3130G-S today and have run into a problem with my port channels- can't get the interface to go into trunk mode.
Has anyone seen this before?
(config)#int po 20
(config-if)#switchport
Command rejected: Not a convertible port.
Any help/advice would be greatly appreciated!
Solved! Go to Solution.
02-19-2010 02:46 PM
No. You need to make it a switch port before you can make it a trunk.
config t
int portchannel 1
switchport.
No switchport means that the port is a layer 3 routed port. Trunking will not work on routed port. Also make sure that all ports that are part of the channel also make them a switch port as i describe above.
02-19-2010 02:14 PM
Hi carl,
What do you see if you do a ? after switchport
Reza
02-19-2010 02:19 PM
(config-if)#switchport ?
access Set access mode characteristics of the interface
autostate Include or exclude this port from vlan link up calculation
backup Set backup for the interface
block Disable forwarding of unknown uni/multi cast addresses
host Set port host
mode Set trunking mode of the interface
nonegotiate Device will not engage in negotiation protocol on this interface
priority Set appliance 802.1p priority
protected Configure an interface to be a protected port
trunk Set trunking characteristics of the interface
voice Voice appliance attributes
02-19-2010 02:30 PM
Try this:
Management-Switch(config-if)#switchport mode access
or
Management-Switch(config-if)#switchport mode trunk
and see what happens
Reza
02-19-2010 02:33 PM
#conf t
Enter configuration commands, one per line. End with CNTL/Z.
(config)#int PO 20
(config-if)#switchport mode trunk
Command rejected: Po20 not a switching port.
(config-if)#switchport mode access
Command rejected: Po20 not a switching port.
config-if)#
02-19-2010 02:41 PM
Do you have IP address configured on the portchannel?
can you post the config?
Reza
02-19-2010 02:44 PM
interface Port-channel20
no switchport
no ip address
no ip route-cache
I need an IP address assigned to trunk?
02-19-2010 02:46 PM
No. You need to make it a switch port before you can make it a trunk.
config t
int portchannel 1
switchport.
No switchport means that the port is a layer 3 routed port. Trunking will not work on routed port. Also make sure that all ports that are part of the channel also make them a switch port as i describe above.
02-19-2010 02:50 PM
Won't let me..
(config)#int port-channel 20
(config-if)#switchport
Command rejected: Not a convertible port.
02-19-2010 02:58 PM
If you aready have a port that's part of the channel, make them switchport also.
show etherchannel summary - this should list ports under the channel.
Also if you cannot convert the portchannel to switchport, remove it and recreate and make sure before doing that convert all memebers to layer2 by issuing the switchport command under the interface.
02-19-2010 02:53 PM
Can you also post the config of the physical interface you
added to this portchannel if any?
BTW, you don't need to have IP I was just asking to make sure you do not have any and I just remember that 3100 switch are layer-2 only
02-19-2010 03:26 PM
So, got it working - thanks for the tips guys.
Here's what I did (guess I started the config in the wrong order):
02-19-2010 03:28 PM
hello
yes , i believe that this switch is has the switchport command as a default.
Check out this
also check the IOS version
hope this alleviate the problem.
02-19-2010 03:31 PM
Oh,
nice you got it done. perfect
Congratulations.
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