Having problem with Router-on-a-Stick and the Native VLAN

From: Daniel (daniellai2008@gmail.com)
Date: Tue Jul 29 2008 - 17:28:29 ART


Dear list,
i am a beginner on the CCIE track, and just started the labbing, pls help.

i am having problems doing IEWB Vol.1 Ver.4.1 under the topic
Router-on-a-Stick and the Native VLAN on Page 15
i did all the commands on the Routers and the Switches, and i have checked and
it matches the Answers provided by the work book on P.15,
below is what i encounter.

A. R1 can ping R6's Fa0/0.16 (IP Address: 16.0.0.6 on VLan 16 side) and R6's
Fa0/0.26 (IP Address: 26.0.0.6 on VLan 26 side),
but i can't ping R2 (IP Address : 26.0.0.2 on VLan 26) From R1

B. I can not ping R6 Fa0/0.26 (IP Address :26.0.0.6 on VLan 26 side ) From
R2, so i guess there must be something wrong
on this side from R2 to R6, but i just can't think out what was the problem
there.

C. of course, R6 cant ping R2

below is all my "Show Run" , can any one point out where i did wrong ?
Thanks alot for your help !!

R1_Router#sh run int e0/0
!
interface Ethernet0/0
 ip address 16.0.0.1 255.0.0.0
 half-duplex
end

R1_Router#sh run | include ip route
ip route 26.0.0.0 255.0.0.0 16.0.0.6

--------------------------------------
R2_Router#sh run int e0/0
!
interface Ethernet0/0
 ip address 26.0.0.2 255.0.0.0
 half-duplex
end

R2_Router#sh run | include ip route
ip route 16.0.0.0 255.0.0.0 26.0.0.6

---------------------------------------
R6_Router#sh run int f0/0
Building configuration...

Current configuration : 73 bytes
!
interface FastEthernet0/0
 no ip address
 duplex auto
 speed auto
end

R6_Router#sh run int f0/0.16
!
interface FastEthernet0/0.16
 encapsulation dot1Q 16 native
 ip address 16.0.0.6 255.0.0.0
 no snmp trap link-status
end

R6_Router#sh run int f0/0.26
!
interface FastEthernet0/0.26
 encapsulation dot1Q 26
 ip address 26.0.0.6 255.0.0.0
 no snmp trap link-status
end

------------------------------------------

SW1_Switch#sh run int f0/1
!
interface FastEthernet0/1
 switchport access vlan 16
 switchport mode dynamic desirable
end

SW1_Switch#sh run int f0/13
!
interface FastEthernet0/13
 switchport trunk encapsulation dot1q
 switchport mode trunk
end

SW1_Switch#sh vlan brief

VLAN Name Status Ports
---- -------------------------------- ---------
-------------------------------
1 default active Fa0/2, Fa0/3, Fa0/4, Fa0/5
                                                Fa0/6, Fa0/7, Fa0/8, Fa0/9
                                                Fa0/10, Fa0/11, Fa0/12,
Fa0/14
                                                Fa0/15, Fa0/16, Fa0/17,
Fa0/18
                                                Fa0/19, Fa0/20, Fa0/21,
Fa0/22
                                                Fa0/23, Fa0/24, Gi0/1, Gi0/2
16 VLAN0016 active Fa0/1
26 VLAN0026 active
1002 fddi-default act/unsup

SW1_Switch#sh int trunk

Port Mode Encapsulation Status Native vlan
Fa0/13 on 802.1q trunking 1

Port Vlans allowed on trunk
Fa0/13 1-4094

Port Vlans allowed and active in management domain
Fa0/13 1,16,26

Port Vlans in spanning tree forwarding state and not pruned

-----------------------------------------------------------------------------
--------------------

SW2_Switch#sh run int f0/2
!
interface FastEthernet0/2
 switchport access vlan 26
 switchport mode dynamic desirable
end

Fa0/13 1,16,26
SW2_Switch#

SW2_Switch#sh run int f0/6
!
interface FastEthernet0/6
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 16
 switchport mode trunk
end

SW2_Switch#sh run int f0/13
!
interface FastEthernet0/13
 switchport trunk encapsulation dot1q
 switchport mode trunk
end

S2_Switch#sh int trunk

Port Mode Encapsulation Status Native vlan
Fa0/6 on 802.1q trunking 16
Fa0/13 on 802.1q trunking 1

Port Vlans allowed on trunk
Fa0/6 1-4094
Fa0/13 1-4094

Port Vlans allowed and active in management domain
Fa0/6 1,16,26
Fa0/13 1,16,26

Port Vlans in spanning tree forwarding state and not pruned
Fa0/6 1,16,26
Fa0/13 1,16,26
R13_Switch#

R13_Switch#sh vlan br

VLAN Name Status Ports
---- -------------------------------- ---------
-------------------------------
1 default active Fa0/1, Fa0/3, Fa0/4, Fa0/5
                                                Fa0/7, Fa0/8, Fa0/9, Fa0/10
                                                Fa0/11, Fa0/12, Fa0/14,
Fa0/15
                                                Fa0/16, Fa0/17, Fa0/18,
Fa0/19
                                                Fa0/20, Fa0/21, Fa0/22,
Fa0/23
                                                Fa0/24, Gi0/1, Gi0/2
16 VLAN0016 active
26 VLAN0026 active Fa0/2
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
R13_Switch#

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