From: Joseph Saad (joseph.samir.saad@gmail.com)
Date: Fri Aug 15 2008 - 11:27:34 ART
So, what is your question?
On Fri, Aug 15, 2008 at 12:19 AM, Peter Stephan <pgstephan@gmail.com> wrote:
> Hello guys,
>
> Know most of you had heard about this scenario. But I was actually
> labbing-it up to see it after I heard about it.
>
> Topolgy:
> SW1 ===== SW2 (vlan41)
> vlan41 ||
> ||
> SW3
>
> SW1 is VTP server, SW3 is VTP client, and SW2 is VTP transparent.
> vlan 41 exists in SW1 and SW2 but not on SW3. So it got prunned from SW1's
> trunk as no join message was sent from SW3 for vlan 41
>
> Now the problem that I can see it pruned on the trunk from sw1 to sw2, but
> still I'm able to ping from SW1 to SW2!
> spanning-tree is active on this vlan...
>
>
> Here you go:
>
> SW1:
> Port Mode Encapsulation Status Native vlan
> Fa0/14 on 802.1q trunking 1
>
> Port Vlans allowed on trunk
> Fa0/14 1-4094
>
> Port Vlans allowed and active in management domain
> Fa0/14 1,3,7,9,13,26,41,43,62
>
> Port Vlans in spanning tree forwarding state and not pruned
> Fa0/14 1,3,9,26,43
>
> SW2
> Port Mode Encapsulation Status Native vlan
> Fa0/14 on 802.1q trunking 1
>
> Port Vlans allowed on trunk
> Fa0/14 1-4094
>
> Port Vlans allowed and active in management domain
> Fa0/14 1,13,26,41,62
>
> Port Vlans in spanning tree forwarding state and not pruned
> Fa0/14 1,13,26,41,62
>
> And when I take it off from the trunk:
> SW1(config-if)#do pi 164.29.47.4
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 164.29.47.4, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
> SW1(config-if)#int fa0/14
> SW1(config-if)#swi tru allo v rem 41
> SW1(config-if)#
> 01:27:25: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan41, changed
> state to down
> SW1(config-if)#do pi 164.29.47.4
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 164.29.47.4, timeout is 2 seconds:
> ....
> Success rate is 0 percent (0/4)
> SW1(config-if)#
>
>
>
> Thx,
> Peter.
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
Blogs and organic groups at http://www.ccie.net
This archive was generated by hypermail 2.1.4 : Mon Sep 01 2008 - 08:15:30 ART