L2 tunnel in tunnel

Physical connection:
R1(fa0/0)---(1)SW1(23,24)---(23,24)SW2(21,22)---(21,22)SW3(23,24)---(23,24)SW4(4)---(fa0/1)R4

The goal is for R1 and R4 to be able to ping each other by 14.0.0.x and
41.0.0.x.
The following configuration does not work. Can some one explain why?

Thanks,
Jack
------------------------------------
R1:
interface FastEthernet0/0
  no ip address
  speed 100
  full-duplex
!
interface FastEthernet0/0.14
  encapsulation dot1Q 14
  ip address 14.0.0.1 255.255.255.0
!
interface FastEthernet0/0.41
  encapsulation dot1Q 41
  ip address 41.0.0.1 255.255.255.0

R4:
interface FastEthernet0/1
  no ip address
  speed 100
  full-duplex
!
interface FastEthernet0/1.14
  encapsulation dot1Q 14
  ip address 14.0.0.4 255.255.255.0
!
interface FastEthernet0/1.41
  encapsulation dot1Q 41
  ip address 41.0.0.4 255.255.255.0

SW1:
interface Port-channel4
  switchport trunk encapsulation dot1q
  switchport mode trunk
!
interface FastEthernet0/1
  switchport access vlan 140
  switchport mode dot1q-tunnel
  l2protocol-tunnel cdp
  l2protocol-tunnel lldp
  l2protocol-tunnel stp
  l2protocol-tunnel vtp
  no cdp enable
!
interface FastEthernet0/23
  switchport trunk encapsulation dot1q
  switchport mode trunk
  channel-group 4 mode desirable
!
interface FastEthernet0/24
  switchport trunk encapsulation dot1q
  switchport mode trunk
  channel-group 4 mode desirable

SW2:
interface Port-channel3
  switchport trunk encapsulation dot1q
  switchport mode trunk
!
interface FastEthernet0/21
  switchport trunk encapsulation dot1q
  switchport mode trunk
  channel-group 3 mode desirable
!
interface FastEthernet0/22
  switchport trunk encapsulation dot1q
  switchport mode trunk
  channel-group 3 mode desirable
!
interface FastEthernet0/23
  switchport access vlan 100
  switchport mode dot1q-tunnel
  l2protocol-tunnel cdp
  l2protocol-tunnel lldp
  l2protocol-tunnel stp
  l2protocol-tunnel vtp
  l2protocol-tunnel point-to-point pagp
  no cdp enable
  no cdp tlv server-location
  no cdp tlv app
!
interface FastEthernet0/24
  switchport access vlan 200
  switchport mode dot1q-tunnel
  l2protocol-tunnel cdp
  l2protocol-tunnel lldp
  l2protocol-tunnel stp
  l2protocol-tunnel vtp
  l2protocol-tunnel point-to-point pagp
  no cdp enable
  no cdp tlv server-location
  no cdp tlv app

SW3:
interface Port-channel2
  switchport trunk encapsulation dot1q
  switchport mode trunk
!
interface FastEthernet0/21
  switchport trunk encapsulation dot1q
  switchport mode trunk
  channel-group 2 mode desirable
!
interface FastEthernet0/22
  switchport trunk encapsulation dot1q
  switchport mode trunk
  channel-group 2 mode desirable
!
interface FastEthernet0/23
  switchport access vlan 100
  switchport mode dot1q-tunnel
  l2protocol-tunnel cdp
  l2protocol-tunnel lldp
  l2protocol-tunnel stp
  l2protocol-tunnel vtp
  l2protocol-tunnel point-to-point pagp
  no cdp enable
  no cdp tlv server-location
  no cdp tlv app
!
interface FastEthernet0/24
  switchport access vlan 200
  switchport mode dot1q-tunnel
  shutdown
  l2protocol-tunnel cdp
  l2protocol-tunnel lldp
  l2protocol-tunnel stp
  l2protocol-tunnel vtp
  l2protocol-tunnel point-to-point pagp
  no cdp enable
  no cdp tlv server-location
  no cdp tlv app

SW4:
interface Port-channel1
  switchport trunk encapsulation dot1q
  switchport mode trunk
!
interface FastEthernet0/4
  switchport access vlan 140
  switchport mode dot1q-tunnel
  l2protocol-tunnel cdp
  l2protocol-tunnel lldp
  l2protocol-tunnel stp
  l2protocol-tunnel vtp
  no cdp enable
!
interface FastEthernet0/23
  switchport trunk encapsulation dot1q
  switchport mode trunk
  channel-group 1 mode desirable
!
interface FastEthernet0/24
  switchport trunk encapsulation dot1q
  switchport mode trunk
  channel-group 1 mode desirable
!

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Received on Thu Jun 16 2011 - 12:34:06 ART