I am new in VLANs , im currently trying to complete this topology however i can see the following errors on all the three switches: EX:
%CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on FastEthernet0/2 (1), with S3 FastEthernet0/2 (99).
%CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on FastEthernet0/1 (1), with S2 FastEthernet0/1 (99).
The used configuration is : S2:
int fa0/1
switchport mode trunk
switchport trunk native vlan 99
int range fa0/1-5
switchport mode access
switchport access vlan 99
no shutdown
exit
int range fa0/6-10
switchport mode access
switchport access vlan 30
no shutdown
exit
int range fa0/11-17
switchport mode access
switchport access vlan 10
no shutdown
exit
int range fa0/18-24
switchport mode access
switchport access vlan 20
no shutdown
exit
S1:
int range fa0/1-2
switchport mode trunk
switchport trunk native vlan 99
S3:
int fa0/2
switchport mode trunk
switchport trunk native vlan 99
int range fa0/1-5
switchport mode access
switchport access vlan 99
no shutdown
exit
int range fa0/6-10
switchport mode access
switchport access vlan 30
no shutdown
exit
int range fa0/11-17
switchport mode access
switchport access vlan 10
no shutdown
exit
int range fa0/18-24
switchport mode access
switchport access vlan 20
no shutdown
exit
the vlans created on all switches are:
vlan 99
name management
vlan 30
name Guest(Default)
vlan 10
name Faculty/Staff
vlan 20
name Students
can any one help me to know what the possible mistake may be?
show cdp neighbor
command.