11-28-2018 11:23 AM - edited 03-08-2019 04:42 PM
I have a 3650 switch that I am trying to uplink to a 3850.
The link comes up, but not all of my VLANs are communicating properly.
Below are the interface configs for the two switches, and further below is the output on the 3650 when the uplink is plugged in.
Only interfaces vlan1 and vlan7 come up, but 200 is my main config vlan.
Any thoughts on what is misconfigured?
ws-3850-x
interface TenGigabitEthernet1/0/7 description IDF1 switchport trunk allowed vlan 1,7,20,31,80,102,107,200 switchport mode trunk auto qos trust dscp spanning-tree guard root service-policy input AutoQos-4.0-Trust-Dscp-Input-Policy service-policy output AutoQos-4.0-Output-Policy !
ws-3650-24td
interface TenGigabitEthernet1/1/3 description UPLINK PORT switchport trunk allowed vlan 1,7,20,31,80,102,107,200 switchport mode trunk !
interface Vlan200
description Corp Vlan
ip address 172.16.15.237 255.255.240.0
!
Output from 3650
*Nov 28 19:01:57.481: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/3 *Nov 28 19:02:01.818: %LINK-3-UPDOWN: Interface TenGigabitEthernet1/1/3, changed state to up *Nov 28 19:02:03.818: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/1/3, changed state to up *Nov 28 19:02:34.815: %LINK-3-UPDOWN: Interface Vlan1, changed state to up *Nov 28 19:02:34.816: %LINK-3-UPDOWN: Interface Vlan7, changed state to up *Nov 28 19:02:35.815: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to up *Nov 28 19:02:35.815: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan7, changed state to up
I also connected a laptop to one of the access ports which should land on VLAN 200, and it cannot communicate with the rest of the devices on that VLAN
interface GigabitEthernet1/0/4 description ACCESS PORT switchport trunk native vlan 200 switchport trunk allowed vlan 7,200 switchport mode trunk spanning-tree portfast spanning-tree bpduguard enable !
Solved! Go to Solution.
11-29-2018 07:02 AM
Hello
On the both switches:
vlan 200
exit
On each switch interconnect:
Switchport trunk native vlan 200
Access port
ddefault interface x/x
switchport mode access
switchport access vlan 200
switchport voice vlan 7
11-28-2018 11:42 AM
Hello,
what is the purpose of the interface below ? It is not an access port, and if it is supposed to be a trunk, it won't work either because you have set the native VLAN to 200 (in order for that to work, the native VLAN on ALL trunks needs to be set to 200).
interface GigabitEthernet1/0/4
description ACCESS PORT
switchport trunk native vlan 200
switchport trunk allowed vlan 7,200
switchport mode trunk
spanning-tree portfast
spanning-tree bpduguard enable
An access port typically looks like this:
interface GigabitEthernet1/0/4
description ACCESS PORT
switchport mode access vlan 200
spanning-tree portfast
11-28-2018 11:43 AM - edited 11-28-2018 11:48 AM
That interface needs to be untagged for VLAN200 for corporate and tagged for VLAN7 for voice
But just as important is the VLAN200 interface with IP 172.16.15.237 is not reachable from the rest of the network. Which leads me to suspect an issue with the uplink config.
11-28-2018 11:50 AM
Hello,
what is the output of 'show vlan' on both switches ?