Re: encapsulation failed? forus FALSE? sendself FALSE? Huh?

Agreed. The debug implies the correct VLAN is getting flagged. And, What I'm
having trouble understanding is why changing the cost of the interface
(forcing STP down the opposite path) would allow the encapsulation to
function.

Should I be looking for errdisable ports? I'm not seeing any.....

*Mar 1 03:53:21.660: IP: tableid=0, s=4.8.24.2 (local), d=4.8.24.24
(Vlan824), routed via FIB
*Mar 1 03:53:21.660: IP: s=4.8.24.2 (local), d=4.8.24.24 (Vlan824), len
100, sending
*Mar 1 03:53:21.660: IP: s=4.8.24.2 (local), d=4.8.24.24 (Vlan824), len
100, output feature, Check hwidb(63), rtype 1, forus FALSE, sendself FALSE,
mtu 0
*Mar 1 03:53:21.660: IP: s=4.8.24.2 (local), d=4.8.24.24 (Vlan824), len
100, encapsulation failed

-Hammer

On Wed, Jul 8, 2009 at 1:51 PM, Darby Weaver <ccie.weaver_at_gmail.com> wrote:

> If encapsulation is failing then ask yourself why it is not leaving (being
> encapsulated) the device correctly. Why is the packet not getting
> encapsulated in the correct vlan is a better way to put it.
>
>
>
>
>
>
> On Wed, Jul 8, 2009 at 2:31 PM, Hammer <bhmccie_at_gmail.com> wrote:
>
>> 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 <http://www.ipexpert.com/>
>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
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Blogs and organic groups at http://www.ccie.net
Received on Wed Jul 08 2009 - 14:02:28 ART