4500X VSL issue

[umer zubairi]

Friends, I'm trying to configure VSS on a pair of 16 port 4500X.

However, whilst creating the VSL I'm getting below and Port-channel isn't coming up.

EC-5-CANNOT_BUNDLE2: Te1/1 is not compatible with Po5 and will be suspended (trunk mode of Te1/1 is dynamic, Po5 is trunk)

Please help!

[Deepak Kumar]

I agree with you. But I am looking your error:
trunk mode of Te1/2 is dynamic, Po39 is trunk

Regards,
Deepak Kumar

[umer zubairi]

Yes, that's for sure there's a config mismatch but don't know whether it's LACP negotiation problem or a normal trunking mismatch.

Tomorrow I'm going to test it again, I'll definitely keep you posted on updates.

Thanks so much for your valuable inputs!

Kind Regards, 

[Francesco Molino]

Ok, can you do it in other order:
- configure interfaces
- add interfaces into PO
- finalize configuration of PO.

[umer zubairi]

You mean at the end I add 'switch virtual link' command to the port-channel? 

[Francesco Molino]

Yeah I mean configure everything you did except the virtual link in PO.
When you have added interfaces into PO, then go back to PO and add switch virtual link

[Francesco Molino]

Did you tried that?

[umer zubairi]

Gonna try this first thing in the morning hope thing go well with the VSS creation.

Thanks again I'll keep you posted on updates.

[umer zubairi]

I didn't configured anything like this on my physical interfaces.

Actually, switch automatically added these lines when I applied VSL port-channel on these physical ports.

I tried a normal port-channel and found no issues as both the ports joined the channel group within seconds. But when I try making the VSL it always gives same warning and ports get suspended.

[Francesco Molino]

That's why I just want to be sure the config is correct. Can you paste the config on the interfaces as well and let us know.
Or share the config you have because on outputs it seems that interfaces and PO are not equally configured.

[Deepak Kumar]

Hi,

Please check some configuration:

1. Interface speed should be same in a bundle.

2. If there is any Encapsulation is already configured then remove the encapsulation or try with same on all port in a bundle. 

3. Any VLAN configuration on the Switch port etc.

I think the best way to resolve this issue, first set the default to this particular interface and configure again in the bundle. "Default interface Te1/1" command for the same. 

Regards,

Deepak Kumar

[umer zubairi]

Plz check my configs and show outputs as I've almost tried everything to get it up and running.

Kind Regards,

[Deepak Kumar]

Hi,
Your VLAN configuration is looking wrong on Port-Channel and Interfaces.
Please reset default to your Interface and change some setting on Port-Channel interface as
Access Mode VLAN and  Trunking Native Mode VLAN: 

---

Your current configuration as below

On Port-Channel 

Access Mode VLAN: 0 (Inactive)
Trunking Native Mode VLAN: 0 (Inactive)

and on both interfaces:

Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)

Capture Mode Disabled
Capture VLANs Allowed: ALL

Please match all settings and check again.

Regards,

Deepak Kumar

[umer zubairi]

How to configure them to be matched with each other I mean interfaces do not support all the commands.

Do you know the commands to be used here?

[paul driver]

Hello

Just like to add when creating a VSL PC, its best to let the PC get created automatically.

May I suggest try
 
1) delete any related Logical PC you wish to use as the vsl

2) default the physical interface of the PC and SHUT them down.

3) assign Just the port-channel group X ON mode to the physical interfaces ( PC wil get created)

4) apply virtual link number to pc and create VSL config
5) enable physical interfaces

default int ran x/x ,x
int ran x/x , x
shut
channel-group X mode on

int port-channel x
switchport
switch virtual-link x
no shut

switch virtual domain xx
switch x

int ran x/x , x
no shut

res
Paul

[umer zubairi]

Thanks Paul, I've almost tried everything.

Check below show outputs from port-channel and physical interfaces, especially the red highlighted part

Switch#sh int port-channel 39 switchport

Name: Po39

Switchport: Enabled

Administrative Mode: trunk

Operational Mode: down

Administrative Trunking Encapsulation: dot1q

Negotiation of Trunking: Off

Access Mode VLAN: 0 (Inactive)

Trunking Native Mode VLAN: 0 (Inactive)

Administrative Native VLAN tagging: enabled

Voice VLAN: none

Administrative private-vlan host-association: none

Administrative private-vlan mapping: none

Administrative private-vlan trunk native VLAN: none

Administrative private-vlan trunk Native VLAN tagging: enabled

Administrative private-vlan trunk encapsulation: dot1q

Administrative private-vlan trunk normal VLANs: none

Administrative private-vlan trunk associations: none

Administrative private-vlan trunk mappings: none

Operational private-vlan: none

Trunking VLANs Enabled: ALL

Pruning VLANs Enabled: 2-1001

Unknown unicast blocked: disabled

Unknown multicast blocked: disabled

Appliance trust: none

-------------------------------------------------------------

Switch#

Switch#

Switch#sh int te

Switch#sh int tenGigabitEthernet 1/1 sw

Name: Te1/1

Switchport: Enabled

Administrative Mode: trunk

Operational Mode: down (suspended member of bundle Po39)

Administrative Trunking Encapsulation: dot1q

Negotiation of Trunking: Off

Access Mode VLAN: 1 (default)

Trunking Native Mode VLAN: 1 (default)

Administrative Native VLAN tagging: enabled

Voice VLAN: none

Administrative private-vlan host-association: none

Administrative private-vlan mapping: none

Administrative private-vlan trunk native VLAN: none

Administrative private-vlan trunk Native VLAN tagging: enabled

Administrative private-vlan trunk encapsulation: dot1q

Administrative private-vlan trunk normal VLANs: none

Administrative private-vlan trunk associations: none

Administrative private-vlan trunk mappings: none

Operational private-vlan: none

Trunking VLANs Enabled: ALL

Pruning VLANs Enabled: 2-1001

Capture Mode Disabled

Capture VLANs Allowed: ALL

Unknown unicast blocked: disabled

Unknown multicast blocked: disabled

Appliance trust: none

Switch#

Switch#

Switch#sh int te

Switch#sh int tenGigabitEthernet 1/2 sw

Name: Te1/1

Switchport: Enabled

Administrative Mode: trunk

Operational Mode: down (suspended member of bundle Po39)

Administrative Trunking Encapsulation: dot1q

Negotiation of Trunking: Off

Access Mode VLAN: 1 (default)

Trunking Native Mode VLAN: 1 (default)

Administrative Native VLAN tagging: enabled

Voice VLAN: none

Administrative private-vlan host-association: none

Administrative private-vlan mapping: none

Administrative private-vlan trunk native VLAN: none

Administrative private-vlan trunk Native VLAN tagging: enabled

Administrative private-vlan trunk encapsulation: dot1q

Administrative private-vlan trunk normal VLANs: none

Administrative private-vlan trunk associations: none

Administrative private-vlan trunk mappings: none

Operational private-vlan: none

Trunking VLANs Enabled: ALL

Pruning VLANs Enabled: 2-1001

Capture Mode Disabled

Capture VLANs Allowed: ALL

Unknown unicast blocked: disabled

Unknown multicast blocked: disabled

Appliance trust: none