Im trying to setup VTP trunking on s cisco 2960 which has 24 fastethernet ports and 2 gig ports. If i set one of the fastethernet ports to trunk mode it works fine but not on the gig ports.
Could it be something to do with STP?
Any ideas!?
Here is the run conf
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname Switch
!
boot-start-marker
boot-end-marker
!
enable password 7 xxxxx
!
username superuser privilege 15 password 7 xxxxx
no aaa new-model
system mtu routing 1500
ip subnet-zero
!
!
!
!
!
!
!
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
!
!
interface FastEthernet0/1
switchport access vlan 200
switchport voice vlan 101
spanning-tree portfast
!
interface FastEthernet0/2
!
interface FastEthernet0/3
!
interface FastEthernet0/4
!
interface FastEthernet0/5
!
interface FastEthernet0/6
!
interface FastEthernet0/7
!
interface FastEthernet0/8
!
interface FastEthernet0/9
!
interface FastEthernet0/10
!
interface FastEthernet0/11
!
interface FastEthernet0/12
!
interface FastEthernet0/13
!
interface FastEthernet0/14
!
interface FastEthernet0/15
!
interface FastEthernet0/16
!
interface FastEthernet0/17
!
interface FastEthernet0/18
!
interface FastEthernet0/19
!
interface FastEthernet0/20
!
interface FastEthernet0/21
!
interface FastEthernet0/22
!
interface FastEthernet0/23
!
interface FastEthernet0/24
description THIS WORKS FINE
switchport mode dynamic desirable
!
interface GigabitEthernet0/1
description THIS DOES NOT WORK
logging event trunk-status
switchport mode dynamic desirable
!
interface GigabitEthernet0/2
description Trunk Link o MLS1
switchport mode dynamic desirable
!
interface Vlan1
ip address 10.5.1.3 255.255.0.0
no ip route-cache
!
ip http server
snmp-server user public public v1
snmp-server user public public v2c
snmp-server community public RO
snmp-server user public public v1
snmp-server user public public v2c
!
control-plane
!
!
line con 0
line vty 0 4
login local
line vty 5 15
login
!
ntp server 10.1.254.3
end
Start Free Trial