Problem migrating vlans from 3Com Baseline to Cisco C3750X
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Hi.
I'm migrating a 3Com Baseline router for a new Cisco C3750X, everything works but I have problem with 1 Vlan.
In 3Com I have this configuration, an Ubitiqui Wifi with two Vlan (one for Lan (Vlan 3) and one for Guest (Vlan 99) in 3Com port 38
In 3Com port 20 I connect to Pfsense Firewall and Captive portal service to provide Wifi to the guest (Vlan 99)
This is 3com Configuration:
*#
interface GigabitEthernet1/0/38
port link-type trunk
undo port trunk permit vlan 1
port trunk permit vlan 3 99
port trunk pvid vlan 3
stp edged-port enable
interface GigabitEthernet1/0/20
port link-type trunk
undo port trunk permit vlan 1
port trunk permit vlan 99
stp edged-port enable
#*
I try to replicate the same in a Cisco C3750X but I'm unable to make it works.
This is how I have configured the ports:
*interface GigabitEthernet2/0/38
switchport access vlan 3
switchport trunk allowed vlan 99
switchport trunk encapsulation dot1q
switchport mode trunk
interface GigabitEthernet2/0/20
switchport trunk allowed vlan 99
switchport trunk encapsulation dot1q
switchport mode trunk*
Could someone help me with this configuration ?
Thanks a lot.
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Problem solve.
In Cisco Switch you cannot add an Access port to a Trunk port, instead you need to create a native Vlan and add the Vlan to the Trunk configuration.
This is the correct way:
interface GigabitEthernet2/0/38
switchport trunk allowed vlan 3,99
switchport trunk encapsulation dot1q
switchport trunk native vlan 3
switchport mode trunk
endRegards
