Re: Router on a stick question

That seems like an artifact of running IOU. I noticed in your first show
int trunk that it showed there were no vlans it was forwarding for on the
trunks even though they were allowed. That is why I was asking about
spanning-tree, I think this is just likely a software glitch for you.

On Fri, Mar 15, 2013 at 4:36 PM, Maneesh Chawla <coolmaneesh_at_gmail.com>wrote:

> Strange thing happened.
>
> I had below on sw1 :
>
> Rack1SW1#show interfa trunk
>
> Port Mode Encapsulation Status Native vlan
> Et2/0 desirable n-802.1q trunking 1
> Et2/1 desirable n-802.1q trunking 1
> Et2/2 desirable n-802.1q trunking 1
> Et3/0 desirable n-802.1q trunking 1
>
> <snipped from show run>
>
> !
> interface Ethernet2/0
> duplex auto
> !
> interface Ethernet2/1
> duplex auto
> !
> interface Ethernet2/2
> duplex auto
> !
>
>
>
> Now, made the below change and everything worked.
>
> Enter configuration commands, one per line. End with CNTL/Z.
> Rack1SW1(config)#interface range e2/0-2
> Rack1SW1(config-if-range)#switchport trunk encap dot1
> Rack1SW1(config-if-range)#switchport mode trunk
> Rack1SW1(config-if-range)#
>
>
>
> Can someone help me understand this ?
>
> Thanks
> Maneesh
>
> On Fri, Mar 15, 2013 at 2:24 PM, marc abel <marcabel_at_gmail.com> wrote:
>
>> Does VLAN 67 exist on Sw2?
>>
>> Please also provide show int trunk from SW2, as well as a show span vlan
>> 67 on Sw1/
>>
>>
>>
>> On Fri, Mar 15, 2013 at 3:58 PM, Kapil Atrish <kapilatrish_at_hotmail.com>wrote:
>>
>>> Can you add int vlan 67 on Switch 2 as well and see which side is
>>> pingable
>>> from there? Perhaps, create the following int on SW2 and try to ping
>>> Router
>>> and SW1 both to get an idea which side is failing. SW2:
>>> interface Vlan67
>>> ip address 155.15.67.10 255.255.255.0
>>> Thanks,Kapil Also, > Date: Fri, 15 Mar 2013 10:54:32 -0700
>>> > Subject: Re: Router on a stick question
>>> > From: coolmaneesh_at_gmail.com
>>> > To: jb.poplawski_at_gmail.com
>>> > CC: ccielab_at_groupstudy.com
>>> >
>>> > Auto-negotiated
>>> >
>>> > Rack1SW1#show interface trunk
>>> >
>>> > Port Mode Encapsulation Status Native
>>> vlan
>>> > Et2/0 desirable n-802.1q trunking 1
>>> > Et2/1 desirable n-802.1q trunking 1
>>> > Et2/2 desirable n-802.1q trunking 1
>>> > Et3/0 desirable n-802.1q trunking 1
>>> > Et3/1 desirable n-802.1q trunking 1
>>> > Et3/2 desirable n-802.1q trunking 1
>>> > Et4/0 desirable n-isl trunking 1
>>> > Et4/1 desirable n-isl trunking 1
>>> > Et4/2 desirable n-isl trunking 1
>>> >
>>> > Port Vlans allowed on trunk
>>> > Et2/0 1-4094
>>> > Et2/1 1-4094
>>> > Et2/2 1-4094
>>> > Et3/0 1-4094
>>> > Et3/1 1-4094
>>> > Et3/2 1-4094
>>> > Et4/0 1-4094
>>> > Et4/1 1-4094
>>> > Et4/2 1-4094
>>> >
>>> > Port Vlans allowed and active in management domain
>>> > Et2/0 1,67,79,100
>>> > Et2/1 1,67,79,100
>>> > Et2/2 1,67,79,100
>>> > Et3/0 1,67,79,100
>>> > Et3/1 1,67,79,100
>>> > Et3/2 1,67,79,100
>>> > Et4/0 1,67,79,100
>>> > Et4/1 1,67,79,100
>>> > Et4/2 1,67,79,100
>>> >
>>> > Port Vlans in spanning tree forwarding state and not
>>> pruned
>>> > Et2/0 1,67,79,100
>>> > Et2/1 none
>>> > Et2/2 none
>>> > Et3/0 none
>>> > Et3/1 none
>>> > Et3/2 none
>>> > Et4/0 1,67,79,100
>>> > Et4/1 1,67,79,100
>>> > Et4/2 1,67,79,100
>>> >
>>> >
>>> > On Fri, Mar 15, 2013 at 10:51 AM, JB Poplawski
>>> <jb.poplawski_at_gmail.com>wrote:
>>> >
>>> > > Interface up on the switch? Is Switch A supposed to trunk
>>> somewhere, I
>>> > > don't see it.
>>> > >
>>> > >
>>> > > On Fri, Mar 15, 2013 at 12:46 PM, Maneesh Chawla
>>> <coolmaneesh_at_gmail.com>wrote:
>>> > >
>>> > >> Topo
>>> > >> -------
>>> > >>
>>> > >> .7 .6
>>> > >> SW1------------------------------R6
>>> > >>
>>> > >> (155.15.67.0/24 vlan 67)
>>> > >>
>>> > >>
>>> > >> Physical topo
>>> > >> --------------------
>>> > >>
>>> > >>
>>> > >>
>>>
>>> SW1-(e2/0-2)-------------------(e2/0-2)-SW2-(e1/2)-------------------(e0/0)-R
>>> 6
>>> > >>
>>> > >>
>>> > >> I have attached below the configs. The example is taken from INE
>>> videos
>>> > >> module 1 lesson 1.
>>> > >>
>>> > >> not able to ping from R6 to SW1.
>>> > >> Not sure what am I missing here. Can the gurus help out ?
>>> > >>
>>> > >> Attached the configs.
>>> > >> R6
>>> > >> -------
>>> > >>
>>> > >> Rack1R6#show run
>>> > >> Building configuration...
>>> > >>
>>> > >> Current configuration : 1414 bytes
>>> > >> !
>>> > >> ! Last configuration change at 18:19:48 CET Fri Mar 15 2013
>>> > >> !
>>> > >> version 12.4
>>> > >> service timestamps debug datetime msec
>>> > >> service timestamps log datetime msec
>>> > >> no service password-encryption
>>> > >> !
>>> > >> hostname Rack1R6
>>> > >> !
>>> > >> boot-start-marker
>>> > >> boot-end-marker
>>> > >> !
>>> > >> !
>>> > >> no aaa new-model
>>> > >> clock timezone CET 1
>>> > >> mmi polling-interval 60
>>> > >> no mmi auto-configure
>>> > >> no mmi pvc
>>> > >> mmi snmp-timeout 180
>>> > >> ip source-route
>>> > >> ip auth-proxy max-login-attempts 5
>>> > >> ip admission max-login-attempts 5
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> ip cef
>>> > >> no ip domain lookup
>>> > >> no ipv6 traffic interface-statistics
>>> > >> no ipv6 cef
>>> > >> !
>>> > >> multilink bundle-name authenticated
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> redundancy
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> interface Ethernet0/0
>>> > >> no ip address
>>> > >> !
>>> > >> interface Ethernet0/0.67
>>> > >> encapsulation dot1Q 67
>>> > >> ip address 155.15.67.6 255.255.255.0
>>> > >> !
>>> > >> interface Ethernet0/1
>>> > >> no ip address
>>> > >> !
>>> > >> interface Ethernet0/2
>>> > >> no ip address
>>> > >> !
>>> > >> interface Ethernet0/3
>>> > >> no ip address
>>> > >> !
>>> > >> interface Serial1/0
>>> > >> no ip address
>>> > >> serial restart-delay 0
>>> > >> !
>>> > >> interface Serial1/1
>>> > >> no ip address
>>> > >> serial restart-delay 0
>>> > >> !
>>> > >> interface Serial1/2
>>> > >> no ip address
>>> > >> serial restart-delay 0
>>> > >> !
>>> > >> interface Serial1/3
>>> > >> no ip address
>>> > >> serial restart-delay 0
>>> > >> !
>>> > >> ip forward-protocol nd
>>> > >> !
>>> > >> !
>>> > >> no ip http server
>>> > >> no ip http secure-server
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> control-plane
>>> > >> !
>>> > >> !
>>> > >> line con 0
>>> > >> exec-timeout 0 0
>>> > >> privilege level 15
>>> > >> logging synchronous
>>> > >> line aux 0
>>> > >> exec-timeout 0 0
>>> > >> privilege level 15
>>> > >> line vty 0 4
>>> > >> login
>>> > >> transport input all
>>> > >> !
>>> > >> exception data-corruption buffer truncate
>>> > >> end
>>> > >>
>>> > >>
>>> > >>
>>> > >>
>>> > >> sw1
>>> > >> -------
>>> > >>
>>> > >>
>>> > >> Rack1SW1#show run
>>> > >> Building configuration...
>>> > >>
>>> > >> Current configuration : 1597 bytes
>>> > >> !
>>> > >> ! Last configuration change at 18:10:16 CET Fri Mar 15 2013
>>> > >> !
>>> > >> version 15.0
>>> > >> service timestamps debug datetime msec
>>> > >> service timestamps log datetime msec
>>> > >> no service password-encryption
>>> > >> !
>>> > >> hostname Rack1SW1
>>> > >> !
>>> > >> boot-start-marker
>>> > >> boot-end-marker
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> no aaa new-model
>>> > >> clock timezone CET 1
>>> > >> !
>>> > >> ip cef
>>> > >> no ip domain-lookup
>>> > >> !
>>> > >> no ipv6 cef
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> spanning-tree mode pvst
>>> > >> spanning-tree extend system-id
>>> > >> !
>>> > >> vlan internal allocation policy ascending
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> interface Ethernet0/0
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet0/1
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet0/2
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet0/3
>>> > >> no switchport
>>> > >> ip address 155.15.37.7 255.255.255.0
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet1/0
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet1/1
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet1/2
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet1/3
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet2/0
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet2/1
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet2/2
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet2/3
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet3/0
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet3/1
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet3/2
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet3/3
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet4/0
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet4/1
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet4/2
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet4/3
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Vlan1
>>> > >> no ip address
>>> > >> shutdown
>>> > >> !
>>> > >> interface Vlan67
>>> > >> ip address 155.15.67.7 255.255.255.0
>>> > >> !
>>> > >> interface Vlan79
>>> > >> ip address 155.15.79.7 255.255.255.0
>>> > >> !
>>> > >> !
>>> > >> ip forward-protocol nd
>>> > >> no ip http server
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> control-plane
>>> > >> !
>>> > >> !
>>> > >> line con 0
>>> > >> exec-timeout 0 0
>>> > >> privilege level 15
>>> > >> logging synchronous
>>> > >> line aux 0
>>> > >> line vty 0 4
>>> > >> login
>>> > >> transport input all
>>> > >> !
>>> > >> end
>>> > >>
>>> > >>
>>> > >>
>>> > >> sw2
>>> > >> -------
>>> > >>
>>> > >> Rack1SW2#show run
>>> > >> Building configuration...
>>> > >>
>>> > >> Current configuration : 1674 bytes
>>> > >> !
>>> > >> ! Last configuration change at 17:35:16 CET Fri Mar 15 2013
>>> > >> !
>>> > >> version 15.0
>>> > >> service timestamps debug datetime msec
>>> > >> service timestamps log datetime msec
>>> > >> no service password-encryption
>>> > >> !
>>> > >> hostname Rack1SW2
>>> > >> !
>>> > >> boot-start-marker
>>> > >> boot-end-marker
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> no aaa new-model
>>> > >> clock timezone CET 1
>>> > >> !
>>> > >> ip cef
>>> > >> no ip domain-lookup
>>> > >> !
>>> > >> no ipv6 cef
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> spanning-tree mode pvst
>>> > >> spanning-tree extend system-id
>>> > >> !
>>> > >> vlan internal allocation policy ascending
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> interface Ethernet0/0
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet0/1
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet0/2
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet0/3
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet1/0
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet1/1
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet1/2
>>> > >> switchport trunk encapsulation dot1q
>>> > >> switchport mode trunk
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet1/3
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet2/0
>>> > >> switchport trunk encapsulation dot1q
>>> > >> switchport mode trunk
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet2/1
>>> > >> switchport trunk encapsulation dot1q
>>> > >> switchport mode trunk
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet2/2
>>> > >> switchport trunk encapsulation dot1q
>>> > >> switchport mode trunk
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet2/3
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet3/0
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet3/1
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet3/2
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet3/3
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet4/0
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet4/1
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet4/2
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Ethernet4/3
>>> > >> duplex auto
>>> > >> !
>>> > >> interface Vlan1
>>> > >> no ip address
>>> > >> shutdown
>>> > >> !
>>> > >> !
>>> > >> ip forward-protocol nd
>>> > >> no ip http server
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> !
>>> > >> control-plane
>>> > >> !
>>> > >> !
>>> > >> line con 0
>>> > >> exec-timeout 0 0
>>> > >> privilege level 15
>>> > >> logging synchronous
>>> > >> line aux 0
>>> > >> line vty 0 4
>>> > >> login
>>> > >> transport input all
>>> > >> !
>>> > >> end
>>> > >>
>>> > >>
>>> > >> Blogs and organic groups at http://www.ccie.net
>>> > >>
>>> > >>
>>> _______________________________________________________________________
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>>> Blogs and organic groups at http://www.ccie.net
>>>
>>> _______________________________________________________________________
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>>>
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>>>
>>>
>>
>>
>> --
>> Marc Abel
>> CCIE #35470
>> (Routing and Switching)
>>
>
>

-- 
Marc Abel
CCIE #35470
(Routing and Switching)
Blogs and organic groups at http://www.ccie.net