ping is not working

[JunaidM]

Dears,

Can someone please help me with the problem below:

Physical Connectivity:
Cisco-RTR (eth0/1) SVI --->Trunk (eth0/0) L3-Switch (eth0/1) ---> (eth0) CiscoASA

Router:
interface Ethernet0/1.2
encapsulation dot1Q 2
ip address 192.168.1.2 255.255.255.0
end
!
interface Ethernet0/1
no ip address
end
-----
Switch:
interface Ethernet0/0
switchport trunk allowed vlan 2
switchport trunk encapsulation dot1q
switchport mode trunk
end
!
interface Ethernet0/1
switchport access vlan 2
switchport mode access
end
!
show vlan brief
VLAN     Name          Satus       Ports
2          VLAN0002     active      Et0/1
-----
CiscoASA
interface ethernet0
no shutdown
!
interface ethernet0.1
vlan 2
no shutdown
!
Context P1
allocate-interface ethernet0.2 IN_P1
!
changeto context P1
!
interface IN_P1
nameif inside
security-level 100
ip add 192.168.1.1 255.255.255.0

Router# ping 192.168.1.1
.....

I am sitting on Router trying to ping interface (IN_P1) it's not working. When am connecting direct cables I mean Cisco ASA with Router it works but having a Core L3 Switch in between is creating a problem even though nothing is misconfigured, am I missing something?

Appreciate your assistance.

[Flavio Miranda]

Hi @JunaidM 

 Switch usually does not required    "switchport trunk encapsulation dot1q"

 Could you remove it and test?

[MHM Cisco World · Accepted solution]

interface Ethernet0/0
switchport trunk allowed vlan 2
switchport trunk encapsulation dot1q
switchport mode trunk
end
!
interface Ethernet0/1

switchport trunk allowed vlan 2
switchport trunk encapsulation dot1q
switchport mode trunk

Friend since you use subinterface you need to make SW interface as trunk not as access

MHM

[JunaidM]

@MHM Cisco World thank you so much, I was struggling since last night, my mistake, is there any document from specifically for this I can read why it should be a trunk port?