Cannot ping from Swith to Router but i can other way another

[flashGC88]

Hello Everyone,

I'm having a problem while configuring the router and switch and i don't know what the problem is. What i want to do it that i want to ping from the switch(Multi Layer switch) to the router but it doesn't work although i can do it other way around, can some please help me how i can fix this problem? thank you very much

[paul driver]

Hello

I suggest use either the router or the switch to perform your inter-vlan routing- At present it looks  like you have both perfroming the same function


Using the router to do this:

Router

Remove:

no ip default-gateway 172.18.1.1 <------------- this is pointing to itself and not required

no ip route 172.18.0.0 255.255.0.0 172.16.0.0.0 <--------------------- not sure what this is doing

But you will need a default route pointing your WAN or external network

somehting like:
ip route 0.0.0.0 0.0.0.0 x.x.x.x ( external next hop)


Switch
no interface Vlan2
no interface Vlan3
no interface Vlan4
no interface Vlan8
no ip route 172.16.0.0 255.255.0.0 172.18.0.0
no ip routing

and lastly the interface connecting to the router should be assigned as a trunk port

res
Paul

[flashGC88]

Hello,

Thank you Paul your answer, i'm going to try it out. I'm doing all this configurition in Cisco Packet Tracer as a self study and just experimenting if it works.