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....
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
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