I have a 1921, trying to setup port g0/1 as a trunk port to access our two vlans. Devices will have been tagged with clan id of 10. I assume that I am fundamentally missing something, because I can not set switchport mode trunk on g0/1.
Current configuration : 2785 bytes
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! Last configuration change at 01:57:02 UTC Thu Jan 28 2016
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version 15.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
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hostname c1921
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boot-start-marker
boot system flash:c1900-universalk9-mz.SPA.154-3.M4.bin
boot-end-marker
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no aaa new-model
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ip dhcp excluded-address 10.0.10.1
ip dhcp excluded-address 10.0.20.1
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ip dhcp pool LAN10
network 10.0.10.0 255.255.255.0
default-router 10.0.10.1
dns-server 8.8.8.8
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ip dhcp pool LAN20
network 10.0.20.0 255.255.255.0
default-router 10.0.20.1
dns-server 8.8.8.8
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ip domain name tlf.com
ip cef
no ipv6 cef
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multilink bundle-name authenticated
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cts logging verbose
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license udi pid CISCO1921/K9 sn FTX151200G2
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username jeffrey privilege 15 secret 5 $1$QaZy$DytGXhB7n8MplLSwxp8s70
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redundancy
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interface Embedded-Service-Engine0/0
no ip address
shutdown
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interface GigabitEthernet0/0
description WAN
ip address dhcp
ip nat outside
ip virtual-reassembly in
duplex auto
speed auto
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interface GigabitEthernet0/1
no ip address
ip nat inside
ip virtual-reassembly in
duplex auto
speed auto
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interface GigabitEthernet0/1/0
switchport access vlan 10
no ip address
spanning-tree portfast
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interface GigabitEthernet0/1/1
switchport access vlan 10
no ip address
spanning-tree portfast
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interface GigabitEthernet0/1/2
switchport access vlan 10
no ip address
spanning-tree portfast
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interface GigabitEthernet0/1/3
switchport access vlan 10
no ip address
spanning-tree portfast
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interface GigabitEthernet0/1/4
switchport access vlan 10
no ip address
spanning-tree portfast
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interface GigabitEthernet0/1/5
switchport access vlan 10
no ip address
spanning-tree portfast
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interface GigabitEthernet0/1/6
switchport access vlan 10
no ip address
spanning-tree portfast
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interface GigabitEthernet0/1/7
switchport access vlan 10
no ip address
spanning-tree portfast
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interface Vlan1
no ip address
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interface Vlan10
ip address 10.0.10.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
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interface Vlan20
ip address 10.0.20.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
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ip forward-protocol nd
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no ip http server
no ip http secure-server
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ip nat inside source list 10 interface GigabitEthernet0/0 overload
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access-list 10 permit 10.0.10.0 0.0.0.255
access-list 10 permit 10.0.20.0 0.0.0.255
access-list 10 permit 10.0.90.0 0.0.0.255
access-list 10 deny any
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control-plane
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line con 0
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line vty 0 4
login local
transport input telnet ssh
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scheduler allocate 20000 1000
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end
