08-01-2024 06:09 AM
Hello, we've got two switches in this scenario SW4500 & SW3172. SW4500 has trunk port Te2/1/18 that's connected to SW3172 on Eth1/52/1. The VLAn in question is VLAN 604. The trunk port on SW4500 has the following config:
description SW3172
switchport trunk allowed vlan 8,56,60,64,152,200,600-605,995
switchport mode trunk
switchport nonegotiate
auto qos trust
spanning-tree cost 5000
service-policy input AutoQos-4.0-Input-Policy
service-policy output AutoQos-4.0-Output-Policy
The other side of the trunk on SW3172 is the following:
description sw4500
switchport mode trunk
spanning-tree cost 5000
speed 10000
no shutdown
The switch SW4500, does show VLAN 604 from a 'sh vlan brief.'
The switch SW3172, does NOT show the VLAN.
From my understanding, since VTP is enabled, shouldn't VLAn 604 be appearing on SW3172?
Solved! Go to Solution.
08-01-2024 08:26 AM
Hello @Mogwai ,
is that device a Nexus switch from interface naming it looks like Eth1/52/1 ?
no VTP support on nexus
You need to create manually the VLAN on it
Nexus# show vtp ?
^
% Invalid parameter detected at '^' marker.
Nexus#
Hope to help
Giuseppe
08-01-2024 06:43 AM
share for both SW
show vlan brief
show interface trunk
show interface switchport
show vtp
08-01-2024 06:52 AM
08-01-2024 07:09 AM - edited 08-01-2024 07:13 AM
add in SW3172 vlan 604
by command
vlan 604
MHM
08-01-2024 07:25 AM
I can do that, but shouldn't VTP have propagated the VLAN over the trunk?
08-01-2024 07:29 AM
Show vtp status <<- not show vtp interface
Share this please
Thanks
MHM
08-01-2024 08:26 AM
Hello @Mogwai ,
is that device a Nexus switch from interface naming it looks like Eth1/52/1 ?
no VTP support on nexus
You need to create manually the VLAN on it
Nexus# show vtp ?
^
% Invalid parameter detected at '^' marker.
Nexus#
Hope to help
Giuseppe
08-01-2024 10:12 AM
Thanks I didn't realize that the Nexus switches don't support VTP.
08-01-2024 10:17 AM
But you share in text
Show vtp interface which show vtp enable in ports in sw3xxx?
Can you share show vtp status for this SW
MHM
08-01-2024 10:40 AM - edited 08-01-2024 12:32 PM
please check below
MHM
08-01-2024 12:18 PM
Hello @Mogwai ,
ok modern Nexus switches can support VTP but by default VTP is disabled and you need see @MHM Cisco World's later post.
feature vtp
to enable it and related commands
I have tested the show command in a production Nexus 9000 but I cannot activate the vtp feature on it so I got the error message.
Hope to help
Giuseppe
08-01-2024 12:32 PM
@Mogwai @Giuseppe Larosa
to be clear I found the issue here
NSK support VTP but
VTP worked only in transparent mode in the Cisco Nexus 9000 Series devices, allowing you to extend a VTP domain across the device.
that Why VLAN not push from VTP server to NSK and it need to manually add.
Thanks
MHM
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