I've got a 3640 router that's connected to a 3550 switch. The trunking is set up as dynamic desirable, and I need to change it to be a dot1q trunk. I'm having a little trouble getting that done. I tried doing a:
switchport trunk encapsulation dot1q switchport mode trunk
and the switch became unreachable. Do I need to add something like:
switchport trunk native vlan 77
?Parts of the config are included below...
Thanks!
router
------- interface FastEthernet0/0 no ip address no ip redirects no ip proxy-arp ip pim sparse-mode ip route-cache flow speed 100 full-duplex ! interface FastEthernet0/0.1 encapsulation dot1Q 1 native ip address 10.77.0.1 255.255.0.0 no snmp trap link-status no cdp enable ! interface FastEthernet0/0.77 encapsulation dot1Q 77 no snmp trap link-status no cdp enable xconnect 192.168.7.1 77 pw-class pw-dynamic
Switch
-------- interface FastEthernet0/48 switchport access vlan 77 switchport mode dynamic desirable speed 100 duplex full spanning-tree portfast ! interface Vlan77 ip address 10.77.0.10 255.255.0.0 ! ip default-gateway 10.77.0.1