Hello !
I'm new on this forum and a beginner in networking so sorry if I do something wrong !
I have this topology but I don't know why my switch 1 (the layer 2 on the center) keep this orange lights. Moreover, the computers in the same VLAN can't ping themselves through the layer 2 SWITCHs but trafic is going through layer 3 switch (For example, PC 1 CAN ping PC4 But the trafic doesn't go between the Layer 2). If i break the link between the switch layer 2 (on the center) and the multilayer switch, THEN trafic can go from PC 1 to PC4 normally.
I have one more question :
Do I have to create all the VLAN on ALL the switch or for example, VLAN 5 is useless on the right switch ?
I post you here behind all the commands I entered on the switch. Don't worry, my computers have a correct ip fitting with their VLAN.
Thank you very much for helping me !
Switch L3 :
enable
conf t
hostname Switch-Gauche
no ip domain-lookup
ip routing
int fastEthernet 0/4
no switchport
ip address 192.168.1.2 255.255.252.0
vlan 10
vlan 20
vlan 30
vlan 5
int vlan 10
ip address 172.16.0.10 255.255.248.0
int vlan 20
ip address 172.16.8.10 255.255.252.0
int vlan 30
ip address 172.16.12.10 255.255.254.0
int vlan 5
ip address 172.16.14.10 255.255.255.240
int range fastEthernet 0/1-3
switchport trunk encapsulation dot1q
switchport mode trunk
Switch LEFT
enable
conf t
hostname Switch-GG
logging synchronous
no ip domain-lookup
int range fastEthernet 0/6-22, GigabitEthernet 0/1-2
shutdown
vlan 10
vlan 20
vlan 30
vlan 5
int range FastEthernet 0/1-3
switchport mode access
switchport access vlan 5
int range fastEthernet 0/4-5
switchport mode trunk
Switch MID
enable
conf t
hostname Switch-GM
logging synchronous
no ip domain-lookup
int range fastEthernet 0/6-22, GigabitEthernet 0/1-2
shutdown
vlan 10
vlan 20
vlan 30
vlan 5
int FastEthernet 0/1
switchport mode access
switchport access vlan 10
int FastEthernet 0/2
switchport mode access
switchport access vlan 20
int range fastEthernet 0/3-5
switchport mode trunk
Switch RIGHT
enable
conf t
hostname Switch-GD
logging synchronous
no ip domain-lookup
int range fastEthernet 0/6-22, GigabitEthernet 0/1-2
shutdown
vlan 10
vlan 20
vlan 30
vlan 5
int FastEthernet 0/1
switchport mode access
switchport access vlan 10
int FastEthernet 0/2
switchport mode access
switchport access vlan 30
int FastEthernet 0/3
switchport mode access
switchport access vlan 20
int range fastEthernet 0/4-5
switchport mode trunk