Sorry for the confusion Academy Lab 3 is IPExperts One Week Lab Experience -
Lab 3
This is what I'm seeing. I understand it's a L2 issue and I understand what
is occuring and why. But I can't figure out how to fix the issue w/o
breaking up my VLANs into multiple MST instances or what. I jacked up the
cost on the port channel to force the direct links to be used and I thought
I was good to go. However, the lab specifically calls for ONE instance of
spanning tree for all VLANs and I can't figure out how to force this to
work.
AcadLab3-Cat2(config-if)#
AcadLab3-Cat2(config-if)#do siib
Interface IP-Address OK? Method Status
Protocol
Vlan812 4.8.12.2 YES NVRAM up
up
Vlan824 4.8.24.2 YES NVRAM up
up
Vlan862 4.8.62.4 YES NVRAM up
up
Loopback0 12.12.12.12 YES NVRAM up
up
AcadLab3-Cat2(config-if)#
AcadLab3-Cat2(config-if)#do sho spanni
MST0
Spanning tree enabled protocol mstp
Root ID Priority 32768
Address 0011.9368.a0d0
Cost 200000
Port 25 (FastEthernet0/23)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32768 (priority 32768 sys-id-ext 0)
Address 001b.d4c8.3d00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/1 Desg FWD 200000 128.3 P2p
Fa0/6 Desg FWD 200000 128.8 P2p
Fa0/7 Desg FWD 200000 128.9 P2p
Fa0/9 Desg FWD 200000 128.11 P2p
Fa0/12 Desg FWD 2000000 128.14 Shr
Fa0/13 Desg FWD 2000000 128.15 Shr
Fa0/21 Altn BLK 200000 128.23 P2p
Fa0/22 Altn BLK 200000 128.24 P2p
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/23 Root FWD 200000 128.25 P2p
Fa0/24 Desg FWD 200000 128.26 P2p
Po23 Altn BLK 600000 128.232 P2p
AcadLab3-Cat2(config-if)#do sho int trunk
Port Mode Encapsulation Status Native vlan
Fa0/21 on 802.1q trunking 1
Fa0/22 on 802.1q trunking 1
Fa0/23 on 802.1q trunking 1
Po23 on 802.1q trunking 1
Port Vlans allowed on trunk
Fa0/21 1-4094
Fa0/22 1-4094
Fa0/23 1-4094
Po23 1-4094
Port Vlans allowed and active in management domain
Fa0/21
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,812,824,841,843,847,857,862,864,2829
Fa0/22
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,812,824,841,843,847,857,862,864,2829
Fa0/23
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,812,824,841,843,847,857,862,864,2829
Po23
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,812,824,841,843,847,857,862,864,2829
Port Vlans in spanning tree forwarding state and not pruned
Fa0/21 none
Fa0/22 none
Fa0/23
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,812,824,841,843,847,857,862,864,2829
Po23 none
AcadLab3-Cat2(config-if)#
##########################################################################################################
AcadLab3-Cat4(config)#do siib
Interface IP-Address OK? Method Status
Protocol
Vlan824 4.8.24.4 YES NVRAM up
up
Vlan834 4.8.34.4 YES NVRAM up
up
Vlan847 4.8.47.4 YES NVRAM up
up
Vlan864 4.8.64.4 YES NVRAM up
up
Loopback0 14.14.14.14 YES NVRAM up
up
AcadLab3-Cat4(config)#
AcadLab3-Cat4(config)#
AcadLab3-Cat4(config)#do sho spannin
MST0
Spanning tree enabled protocol mstp
Root ID Priority 32768
Address 0011.9368.a0d0
Cost 200000
Port 25 (FastEthernet0/23)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32768 (priority 32768 sys-id-ext 0)
Address 0019.2f02.ee80
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/6 Desg FWD 200000 128.8 P2p
Fa0/7 Desg FWD 200000 128.9 P2p
Fa0/8 Desg FWD 200000 128.10 P2p
Fa0/9 Desg FWD 200000 128.11 P2p
Fa0/21 Desg FWD 200000 128.23 P2p
Fa0/22 Desg FWD 200000 128.24 P2p
Fa0/23 Root FWD 200000 128.25 P2p
Fa0/24 Desg FWD 200000 128.26 P2p
Po14 Altn BLK 600000 128.160 P2p
AcadLab3-Cat4(config)#
AcadLab3-Cat4(config)#
AcadLab3-Cat4(config)#do sho int trunk
Port Mode Encapsulation Status Native vlan
Fa0/21 on 802.1q trunking 1
Fa0/22 on 802.1q trunking 1
Fa0/23 on 802.1q trunking 1
Po14 on 802.1q trunking 1
Port Vlans allowed on trunk
Fa0/21 1-2888,2890-4094
Fa0/22 1-2888,2890-4094
Fa0/23 1-2888,2890-4094
Po14 1-2888,2890-4094
Port Vlans allowed and active in management domain
Fa0/21
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,824,834,841,843,847,857,862,864,2829
Fa0/22
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,824,834,841,843,847,857,862,864,2829
Fa0/23
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,824,834,841,843,847,857,862,864,2829
Po14
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,824,834,841,843,847,857,862,864,2829
Port Vlans in spanning tree forwarding state and not pruned
Fa0/21
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,824,834,841,843,847,857,862,864,2829
Fa0/22
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,824,834,841,843,847,857,862,864,2829
Fa0/23
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,824,834,841,843,847,857,862,864,2829
Po14 none
AcadLab3-Cat4(config)#
#######################################################################################################
AcadLab3-Cat1(config)#
AcadLab3-Cat1(config)#
AcadLab3-Cat1(config)#do siib
Interface IP-Address OK? Method Status
Protocol
Vlan812 4.8.12.1 YES NVRAM up
up
Vlan813 4.8.13.1 YES NVRAM up
up
Vlan841 4.8.41.1 YES NVRAM up
up
Loopback0 11.11.11.11 YES NVRAM up
up
AcadLab3-Cat1(config)#
AcadLab3-Cat1(config)#
AcadLab3-Cat1(config)#do sho spannin
MST0
Spanning tree enabled protocol mstp
Root ID Priority 32768
Address 0011.9368.a0d0
Cost 200000
Port 21 (FastEthernet0/21)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32768 (priority 32768 sys-id-ext 0)
Address 0012.01b0.f100
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/1 Desg FWD 200000 128.1 P2p
Fa0/2 Desg FWD 200000 128.2 P2p
Fa0/4 Desg FWD 200000 128.4 P2p
Fa0/5 Desg FWD 200000 128.5 P2p
Fa0/11 Desg FWD 2000000 128.11 Shr
Fa0/21 Root FWD 200000 128.21 P2p
Fa0/22 Altn BLK 200000 128.22 P2p
Fa0/23 Desg FWD 200000 128.23 P2p
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/24 Desg FWD 200000 128.24 P2p
Po14 Desg FWD 600000 128.65 P2p
AcadLab3-Cat1(config)#
AcadLab3-Cat1(config)#
AcadLab3-Cat1(config)#
AcadLab3-Cat1(config)#do sho int tu
sho int tu
% Incomplete command.
AcadLab3-Cat1(config)#do sho int tru
Port Mode Encapsulation Status Native vlan
Fa0/21 on 802.1q trunking 1
Fa0/22 on 802.1q trunking 1
Fa0/23 on 802.1q trunking 1
Po14 on 802.1q trunking 1
Port Vlans allowed on trunk
Fa0/21 1-840,842-4094
Fa0/22 1-840,842-4094
Fa0/23 1-840,842-4094
Po14 1-840,842-4094
Port Vlans allowed and active in management domain
Fa0/21
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,812-813,843,847,857,862,864,2829
Fa0/22
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,812-813,843,847,857,862,864,2829
Fa0/23
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,812-813,843,847,857,862,864,2829
Po14
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,812-813,843,847,857,862,864,2829
Port Vlans in spanning tree forwarding state and not pruned
Fa0/21
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,812-813,843,847,857,862,864,2829
Fa0/22 none
Fa0/23
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,812-813,843,847,857,862,864,2829
Po14
1,7,40-41,50,60,70,80-81,86,90,100,110,120,200,300,812-813,843,847,857,862,864,2829
AcadLab3-Cat1(config)#
AcadLab3-Cat1(config)#
AcadLab3-Cat1(config)#
-Hammer
On Wed, Jul 8, 2009 at 1:09 PM, Hammer <bhmccie_at_gmail.com> wrote:
> Acadamy Lab 3. Good stuff.
>
> Give me a few minutes and I'll post relevant output.
>
> -Hammer
>
>
>
> On Wed, Jul 8, 2009 at 1:06 PM, Bryan Bartik <bbartik_at_ipexpert.com> wrote:
>
>> What lab is this? Spanning-tree topology shouldn't matter since only
>> redundant paths are blocked. If there was a misconfiguration with MST,
>> perhaps it could be an issue. Can you post relevant parts of the configs
>> (SVIs, trunk ports, MST config), "sho interface trunk".
>>
>>
>> On Wed, Jul 8, 2009 at 11:42 AM, Hammer <bhmccie_at_gmail.com> wrote:
>>
>>> I'm using a proctorlabs rack. S1 is a 3550. Everything is using SVIs.
>>>
>>> 3550 - 12.2.(44)
>>> and
>>> 3560s - 12.2.(25r)SEC
>>>
>>> The tasks of the lab require one instance of spanning tree (MST 0) so all
>>> my
>>> vlans are going from S2 to S1. If I tamper with the cost of the
>>> interface, I
>>> can bring up the S2 to S4 leg but I kill the S2 to S1 leg. So I can make
>>> it
>>> work but only by sacrificing another path.
>>>
>>> -Hammer
>>>
>>>
>>> On Wed, Jul 8, 2009 at 12:34 PM, Ryan West <rwest_at_zyedge.com> wrote:
>>>
>>> > Hi,
>>> >
>>> > Do you have a 3550 in the mix with a physical interface that has an IP
>>> > address assigned to it or is everything using SVIs? If that is the
>>> case,
>>> > just move the address to an SVI. Verify your VLAN allow list and check
>>> your
>>> > trunk links to make sure the VLAN you're trying to reach is showing up
>>> in
>>> > the list.
>>> >
>>> > The first issue that I mentioned is detailed in this post:
>>> >
>>> >
>>> >
>>> http://forum.internetworkexpert.com/ubbthreads.php/ubb/showflat/Number/14757/page/1#Post14757
>>> >
>>> > -ryan
>>> >
>>> > -----Original Message-----
>>> > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf
>>> Of
>>> > Hammer
>>> > Sent: Wednesday, July 08, 2009 1:15 PM
>>> > To: ccielab_at_groupstudy.com
>>> > Subject: encapsulation failed? forus FALSE? sendself FALSE? Huh?
>>> >
>>> > I am trying to bring up ip over a VLAN between two switches. It's a
>>> typical
>>> > vendor lab with 4 switches and way too many connections.
>>> >
>>> > 1X = 1 wire trunking all vlans
>>> > 2X = 2 wires trunking all vlans
>>> > EC = EtherChannel trunking all vlans
>>> >
>>> > S1---------1x-----------S2
>>> > | \ / |
>>> > | \ / |
>>> > | \ / |
>>> > | \ / |
>>> > 2x EC EC 2x
>>> > | \ / |
>>> > | \ / |
>>> > | \ / |
>>> > | \ / |
>>> > | \ / |
>>> > | X |
>>> > | / \ |
>>> > | / \ |
>>> > | / \ |
>>> > | / \ |
>>> > | / \ |
>>> > | / \ |
>>> > | / \ |
>>> > | / \ |
>>> > | / \ |
>>> > S3-------1X-----------S4
>>> >
>>> > So I need OSPF in this little party but IP first. I can ping east/west
>>> > (from
>>> > 1-2 and from 3-4) and I can ping north/south (from 1-3) but I cannot
>>> ping
>>> > from 2-4. The vlan they need is active. The vlan interface is up/up on
>>> each
>>> > of the switches. But I can't reach the other side of the VLAN. So first
>>> I
>>> > see that spanning tree is preferring my EC links. No problem. Jack up
>>> the
>>> > cost to oblivion and move on. Nope. Still no love. On a debug ip
>>> packet, I
>>> > come up with the below:
>>> >
>>> > BLAH BLAH BLAH, routed via FIB
>>> > BLAH BLAH BLAH sending
>>> > BLAH BLAH BLAH output feature, Check hwidb(63), rtype 1, forus FALSE,
>>> > sendself FALSE, mtu 0
>>> > BLAH BLAH BLAH encapsulation failed
>>> >
>>> > I only found two links on google and none for cco for the forus FALSE
>>> > sendself FALSE. Both links were questions with no answers. Has anyone
>>> seen
>>> > this before? Is this part of my encapsulation failure? Or am I barking
>>> up
>>> > the wrong tree? My logic was that if I was dealing with a spanning tree
>>> > issue the traffic would still exit the switch....
>>> >
>>> > Help?
>>> >
>>> >
>>> >
>>> > -Hammer
>>> >
>>> >
>>> > 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
>>>
>>> _______________________________________________________________________
>>> Subscription information may be found at:
>>> http://www.groupstudy.com/list/CCIELab.html
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>> --
>> Bryan Bartik
>> CCIE #23707 (R&S), CCNP
>> Sr. Support Engineer - IPexpert, Inc.
>> URL: http://www.IPexpert.com
Blogs and organic groups at http://www.ccie.net
Received on Wed Jul 08 2009 - 13:31:36 ART
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