From: nhatphuc (nhatphuc@gmail.com)
Date: Wed Feb 28 2007 - 15:03:22 ART
f0/6 on SW2 connects to R6.
So the complete solution for this question would be added "switchport trunk
allowed vlan 6,26" to int f0/6 on SW2
Thanks DP.
Phuc
On 3/1/07, Derek P <rizacer@gmail.com> wrote:
>
> Something to remember if your trunking to a device that doesn't support
> VTP then you must use the "vlan allowed list" I think f0/6 on SW2 connects
> to R4? You could try adding the allowed list and see how that changes your
> pruned output of a "sh int trunk"
>
>
> DP
>
> On 2/28/07, nhatphuc <nhatphuc@gmail.com> wrote:
> >
> > Thanks DP for replying,
> >
> > In solution, the verification shows that the trunk to sw2 prune some
> > vlans.
> >
> > So the solution output wasn't taken from the real devices? Anyone from
> > InternetworkExpert can make this clear?
> >
> > Thanks
> >
> > On 2/28/07, Derek P <rizacer@gmail.com> wrote:
> > >
> > > Without having the lab in front of me.
> > >
> > > I do see f0/6 on SW2 is set for tunking and is requesting all VLAN's
> > this
> > > would cause your pruning to look as if its not working.
> > >
> > >
> > > DP
> > >
> > > On 2/27/07, nhatphuc <nhatphuc@gmail.com> wrote:
> > >
> > > > Hi Group,
> > > >
> > > > In Question 1.6, IEWBv4 Lab 2, I configure pruning on SW1, and vtp
> > > > pruning
> > > > is enabled on the other 3 switches. But when showing int trunk, the
> > > > trunk
> > > > link to switch 2 doesn't prune the nonexistence vlans. My config is
> > the
> > > > same
> > > > as solution.
> > > >
> > > > What could the problem be?
> > > > If I encounter the same issue in real lab, what should I do to fix
> > the
> > > > problem?
> > > >
> > > > Thanks
> > > >
> > > > This is my config:
> > > >
> > > > SW1#do sh int tru
> > > >
> > > > Port Mode Encapsulation Status Native vlan
> > > > Po1 on isl trunking 1
> > > > Po2 auto n-802.1q trunking 783
> > > > Po3 desirable n-isl trunking 1
> > > >
> > > > Port Vlans allowed on trunk
> > > > Po1 1-4094
> > > > Po2 1-4094
> > > > Po3 1-4094
> > > >
> > > > Port Vlans allowed and active in management domain
> > > > Po1 1,3,5-6,8,10,26,33,52,255,783
> > > > Po2 1,3,5-6,8,10,26,33,52,255,783
> > > > Po3 1,3,5-6,8,10,26,33,52,255,783
> > > >
> > > > Port Vlans in spanning tree forwarding state and not pruned
> > > > Po1 1,3,5-6,8,10,26,33,52,255,783
> > > > Po2 1,33,52,255,783
> > > > Po3 1,255
> > > >
> > > >
> > > > SW1#sh run
> > > > Building configuration...
> > > >
> > > > Current configuration : 2535 bytes
> > > > !
> > > > version 12.2
> > > > no service pad
> > > > service timestamps debug uptime
> > > > service timestamps log uptime
> > > > no service password-encryption
> > > > !
> > > > hostname SW1
> > > > !
> > > > enable password cisco
> > > > !
> > > > aaa new-model
> > > > aaa authentication login default none
> > > > !
> > > > aaa session-id common
> > > > ip subnet-zero
> > > > no ip domain-lookup
> > > > !
> > > > lacp system-priority 1
> > > > no file verify auto
> > > > spanning-tree mode pvst
> > > > spanning-tree extend system-id
> > > > !
> > > > vlan internal allocation policy ascending
> > > > !
> > > > !
> > > > interface Loopback0
> > > > ip address 150.1.7.7 255.255.255.0
> > > > !
> > > > interface Port-channel1
> > > > switchport trunk encapsulation isl
> > > > switchport mode trunk
> > > > !
> > > > interface Port-channel2
> > > > switchport trunk native vlan 783
> > > > !
> > > > interface Port-channel3
> > > > switchport mode dynamic desirable
> > > > !
> > > > interface FastEthernet0/1
> > > > no switchport
> > > > ip address 132.1.17.7 255.255.255.0
> > > > !
> > > > interface FastEthernet0/2
> > > > !
> > > > interface FastEthernet0/3
> > > > switchport access vlan 3
> > > > !
> > > > interface FastEthernet0/4
> > > > !
> > > > interface FastEthernet0/5
> > > > switchport access vlan 5
> > > > !
> > > > interface FastEthernet0/6
> > > > !
> > > > interface FastEthernet0/7
> > > > !
> > > > interface FastEthernet0/8
> > > > !
> > > > interface FastEthernet0/9
> > > > !
> > > > interface FastEthernet0/10
> > > > switchport access vlan 10
> > > > !
> > > > interface FastEthernet0/11
> > > > switchport access vlan 10
> > > > !
> > > > interface FastEthernet0/12
> > > > !
> > > > interface FastEthernet0/13
> > > > switchport trunk encapsulation isl
> > > > switchport mode trunk
> > > > channel-group 1 mode on
> > > > !
> > > > interface FastEthernet0/14
> > > > switchport trunk encapsulation isl
> > > > switchport mode trunk
> > > > channel-group 1 mode on
> > > > !
> > > > interface FastEthernet0/15
> > > > switchport trunk encapsulation isl
> > > > switchport mode trunk
> > > > channel-group 1 mode on
> > > > !
> > > > interface FastEthernet0/16
> > > > switchport trunk native vlan 783
> > > > channel-group 2 mode active
> > > > !
> > > > interface FastEthernet0/17
> > > > switchport trunk native vlan 783
> > > > channel-group 2 mode active
> > > > !
> > > > interface FastEthernet0/18
> > > > switchport trunk native vlan 783
> > > > channel-group 2 mode active
> > > > !
> > > > interface FastEthernet0/19
> > > > switchport mode dynamic desirable
> > > > channel-group 3 mode active
> > > > !
> > > > interface FastEthernet0/20
> > > > switchport mode dynamic desirable
> > > > channel-group 3 mode active
> > > > !
> > > > interface FastEthernet0/21
> > > > shutdown
> > > > !
> > > > interface FastEthernet0/22
> > > > !
> > > > interface FastEthernet0/23
> > > > !
> > > > interface FastEthernet0/24
> > > > !
> > > > interface GigabitEthernet0/1
> > > > !
> > > > interface GigabitEthernet0/2
> > > > !
> > > > interface Vlan1
> > > > no ip address
> > > > shutdown
> > > > !
> > > > interface Vlan783
> > > > ip address 204.12.1.7 255.255.255.0
> > > > !
> > > > ip classless
> > > > ip http server
> > > > ip http secure-server
> > > > !
> > > > !
> > > > radius-server source-ports 1645-1646
> > > > !
> > > > control-plane
> > > > !
> > > > !
> > > > line con 0
> > > > exec-timeout 0 0
> > > > privilege level 15
> > > > logging synchronous
> > > > line vty 0 4
> > > > password cisco
> > > > line vty 5 15
> > > > password cisco
> > > > !
> > > > end
> > > >
> > > >
> > > > SW2#do s run
> > > > Building configuration...
> > > >
> > > > Current configuration : 2109 bytes
> > > > !
> > > > version 12.2
> > > > no service pad
> > > > service timestamps debug uptime
> > > > service timestamps log uptime
> > > > no service password-encryption
> > > > !
> > > > hostname SW2
> > > > !
> > > > enable password cisco
> > > > !
> > > > no aaa new-model
> > > > ip subnet-zero
> > > > no ip domain-lookup
> > > > !
> > > > !
> > > > !
> > > > !
> > > > !
> > > > !
> > > > no file verify auto
> > > > spanning-tree mode pvst
> > > > spanning-tree extend system-id
> > > > !
> > > > vlan internal allocation policy ascending
> > > > !
> > > > !
> > > > interface Loopback0
> > > > ip address 150.1.8.8 255.255.255.0
> > > > !
> > > > interface Port-channel1
> > > > switchport trunk encapsulation isl
> > > > switchport mode trunk
> > > > !
> > > > interface FastEthernet0/1
> > > > !
> > > > interface FastEthernet0/2
> > > > switchport access vlan 26
> > > > !
> > > > interface FastEthernet0/3
> > > > !
> > > > interface FastEthernet0/4
> > > > !
> > > > interface FastEthernet0/5
> > > > !
> > > > interface FastEthernet0/6
> > > > switchport trunk encapsulation dot1q
> > > > switchport trunk native vlan 6
> > > > switchport mode trunk
> > > > switchport nonegotiate
> > > > !
> > > > interface FastEthernet0/7
> > > > !
> > > > interface FastEthernet0/8
> > > > switchport access vlan 52
> > > > !
> > > > interface FastEthernet0/9
> > > > !
> > > > interface FastEthernet0/10
> > > > !
> > > > interface FastEthernet0/11
> > > > !
> > > > interface FastEthernet0/12
> > > > !
> > > > interface FastEthernet0/13
> > > > switchport trunk encapsulation isl
> > > > switchport mode trunk
> > > > channel-group 1 mode on
> > > > !
> > > > interface FastEthernet0/14
> > > > switchport trunk encapsulation isl
> > > > switchport mode trunk
> > > > channel-group 1 mode on
> > > > !
> > > > interface FastEthernet0/15
> > > > switchport trunk encapsulation isl
> > > > switchport mode trunk
> > > > channel-group 1 mode on
> > > > !
> > > > interface FastEthernet0/16
> > > > shutdown
> > > > !
> > > > interface FastEthernet0/17
> > > > shutdown
> > > > !
> > > > interface FastEthernet0/18
> > > > shutdown
> > > > !
> > > > interface FastEthernet0/19
> > > > shutdown
> > > > !
> > > > interface FastEthernet0/20
> > > > shutdown
> > > > !
> > > > interface FastEthernet0/21
> > > > shutdown
> > > > !
> > > > interface FastEthernet0/22
> > > > !
> > > > interface FastEthernet0/23
> > > > !
> > > > interface FastEthernet0/24
> > > > !
> > > > interface GigabitEthernet0/1
> > > > !
> > > > interface GigabitEthernet0/2
> > > > !
> > > > interface Vlan1
> > > > no ip address
> > > > shutdown
> > > > !
> > > > interface Vlan8
> > > > ip address 132.1.8.8 255.255.255.0
> > > > !
> > > > interface Vlan783
> > > > ip address 204.12.1.8 255.255.255.0
> > > > !
> > > > ip classless
> > > > ip http server
> > > > ip http secure-server
> > > > !
> > > > control-plane
> > > > !
> > > > !
> > > > line con 0
> > > > exec-timeout 0 0
> > > > privilege level 15
> > > > logging synchronous
> > > > line vty 0 4
> > > > password cisco
> > > > login
> > > > line vty 5 15
> > > > password cisco
> > > > login
> > > > !
> > > > end
> > > >
> > > > SW2#sh int tru
> > > >
> > > > Port Mode Encapsulation Status Native vlan
> > > > Fa0/6 on 802.1q trunking 6
> > > > Po1 on isl trunking 1
> > > >
> > > > Port Vlans allowed on trunk
> > > > Fa0/6 1-4094
> > > > Po1 1-4094
> > > >
> > > > Port Vlans allowed and active in management domain
> > > > Fa0/6 1,3,5-6,8,10,26,33,52,255,783
> > > > Po1 1,3,5-6,8,10,26,33,52,255,783
> > > >
> > > > Port Vlans in spanning tree forwarding state and not pruned
> > > > Fa0/6 1,3,5-6,8,10,26,33,52,255,783
> > > > Po1 1,3,5,10,33,52,255,783
> > > >
> > > > SW2(config-if)#do sh vl
> > > >
> > > > VLAN Name Status Ports
> > > > ---- -------------------------------- ---------
> > > > -------------------------------
> > > > 1 default active Fa0/1, Fa0/3, Fa0/4,
> > > > Fa0/5
> > > > Fa0/7, Fa0/9,
> > Fa0/10,
> > > > Fa0/11
> > > > Fa0/12, Fa0/16,
> > Fa0/17,
> > > > Fa0/18
> > > > Fa0/19, Fa0/20,
> > Fa0/21,
> > > > Fa0/22
> > > > Fa0/23, Fa0/24,
> > Gi0/1,
> > > > Gi0/2
> > > > 3 VLAN0003 active
> > > > 5 VLAN0005 active
> > > > 6 VLAN0006 active
> > > > 8 VLAN0008 active
> > > > 10 VLAN0010 active
> > > > 26 VLAN0026 active Fa0/2
> > > > 33 VLAN0033 active
> > > > 52 VLAN0052 active Fa0/8
> > > > 255 VLAN0255 active
> > > > 783 VLAN0783 active
> > > > 1002 fddi-default act/unsup
> > > > 1003 token-ring-default act/unsup
> > > > 1004 fddinet-default act/unsup
> > > > 1005 trnet-default act/unsup
> > > >
> > > >
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