Can't ping Switch from PC (using VLANS)

[Gugolsan]

Hello, I'm using Cisco Packet Tracer and trying to configure VLANs and routing between them. Here are two tables, which I have used for configuring:

Device

Interface

IP address

Subnet mask

Default gateway

R1	G0/1.1	192.168.1.1	255.255.255.0	-
	G0/1.10	192.168.10.1	255.255.255.0	-
	G0/1.20	192.168.20.1	255.255.255.0	-
	Lo0	209.165.200.225	255.255.255.224	-
S1	VLAN 1	192.168.1.11	255.255.255.0	192.168.1.1
S2	VLAN 1	192.168.1.12	255.255.255.0	192.168.1.1
PC-A	Fa0	192.168.10.3	255.255.255.0	192.168.10.1
PC-B	Fa0	192.168.20.3	255.255.255.0	192.168.20.1
PC-F	Fa0	192.168.20.2	255.255.255.0	192.168.20.1
PC-S	Fa0	192.168.10.2	255.255.255.0	192.168.10.1

 

Ports	Attachment	Net
S1 F0/1	802.1Q Trunk	N/A
S2 F0/1	802.1Q Trunk	N/A
S1 F0/5	802.1Q Trunk	N/A
S1 F0/2	VLAN 20 – Faculty	192.168.20.0/24
S2 F0/2	VLAN 10 – Students	192.168.10.0/24
S1 F0/6	VLAN 10 – Students	192.168.10.0/24
S2 F0/18	VLAN 20 – Faculty	192.168.20.0/24

My ,pkt file looks like:

I have connected and customized devices, customized VLANs and trunks on switches, customized routing between VLAN based on trunk. Then I have been pinging from PC-A to gateway VLAN 10 with address 192.168.10.0, from PC-A to PC-B, from PC-A to Lo0, from PC-F to PC-S and from PC-S to S2. Everything has been succeded except last: ping from PC-S to switch S2. Where can be the problem? Any ideas?

[MHM Cisco World · Accepted solution]

in SW1 and SW2 config trunk native VLAN to be VLAN 1 

[Gugolsan]

This is bad for safety, if I don't want to config like that?

[MHM Cisco World]

sorry I dont get what you mean ?

[Gugolsan]

I have done these commands for S1 cause I need actually native VLAN to be VLAN123:

S1(config)#int range fa0/1,fa0/5

S1(config-if-range)#switchport trunk native vlan 123

S1(config-if-range)#switchport trunk allowed vlan 1,10,20,123

The similar thing is needed for S2 too.

[MHM Cisco World]

it will not work, VLAN in router native is different than native vlan in SW. 
you must match it. 

[Gugolsan]

So what should I fix then? You said that trunk native VLAN for Switches should be VLAN1, I need VLAN123 for that thing. Should I change something in Router configuration?

[MHM Cisco World · Accepted solution]

if you want to use VLAN 123 as native VLAN then 
1-remove VLAN1 and assign IP you use before for VLAN1 for VLAN 123 in both SW1 & SW2
2- in router remove G0/1.1 and config new subinterface g0/1.123 as native, and use same IP

[Gugolsan]

Thank you so much, forgot about native...

[MHM Cisco World]

You are so so welcome