01-31-2006 12:30 AM - edited 03-03-2019 01:38 AM
Hi,
I've the config listed below and although when I check the port channel is showing up, the trunk is not.
The far end is showing the trunk as being active.
If anyone has any ideas why this is not working, please let me know,
thanks,
Mark
interface Port-channel1
no ip address
interface Port-channel1.224
description Call Manager Express VLAN
encapsulation dot1Q 224
ip address 10.14.182.70 255.255.255.192
no snmp trap link-status
interface Port-channel1.254
description Management_VLAN
encapsulation dot1Q 254
ip address 10.14.182.140 255.255.255.128
no snmp trap link-status
interface Port-channel1.666
description Native VLAN
encapsulation dot1Q 666 native
no snmp trap link-status
interface gigabitEthernet 0/0
speed 100
duplex full
channel-group 1
interface gigabitEthernet 0/1
speed 100
duplex full
channel-group 1
01-31-2006 12:51 AM
Hi Mark,
Can you update which switch you are using and if possible can you paste the output from "sh run"
Regards,
Ankur
01-31-2006 02:35 PM
Hi Ankur,
Sure thing - its a 3560, and I pasted on the following config on the switch:
interface Port-channel1
no switchport
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk native vlan 666
interface range fastethernet 0/23 24
speed 100
duplex full
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 1 mode on
Many thanks,
Mark
01-31-2006 05:17 PM
Hi Mark,
Within your Cat3560 switch configuration:
1) I would consider to add the "switchport trunk native vlan 666" command also under the "interface range fastethernet ..." heading,
2) I am bit confused why you have configured the port-channel interface as L3 ("no switchport"). As you are doing inter-vlan routing at the router I would believe that interface port-channel (Cat3560) should be set rather as L2 (switchport).
3) You may also consider to add "switchport nonegotiate" command under both int port-cahnnel and interface range headings to disable DTP frames as the router does not understand theese.
Best regards,
Antonin
01-31-2006 07:43 PM
Hi Antonin,
Thanks for the response.
1. Have done this
2. I think (as I recall) I had to do this to get it to accept the trunk commands.
3. Have done this too.
It hasn't made any differnence though. I pasted the updated switch config below:
!
interface Port-channel1
switchport trunk encapsulation dot1q
switchport trunk native vlan 666
switchport mode trunk
switchport nonegotiate
interface FastEthernet0/23
switchport trunk encapsulation dot1q
switchport trunk native vlan 666
switchport mode trunk
switchport nonegotiate
duplex full
speed 100
channel-group 1 mode on
!
interface FastEthernet0/24
switchport trunk encapsulation dot1q
switchport trunk native vlan 666
switchport mode trunk
switchport nonegotiate
duplex full
speed 100
channel-group 1 mode on
01-31-2006 11:03 PM
Hello,
AFAIK, you cannot mix FastEthernet and GigabitEthernet interfaces in a single channel. Can you try and establish the channel with FastEthernet or GigabitEthernet interfaces on BOTH sides ?
Regards,
GP
01-31-2006 11:56 PM
Hi GP,
It is using two FA on one end and two GE on the other. Possibly that's why its not working.
I've thrown in the towel now and am going to have a pair of routed links instead.
Many thanks for your help guys,
Mark
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