Re: Router on a stick question

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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>
>
> --
> Marc Abel
> CCIE #35470
> (Routing and Switching)

Blogs and organic groups at http://www.ccie.net
Received on Fri Mar 15 2013 - 14:36:38 ART