every switch is the root in vlan 1
mahirali
✭✭
Hello Everybody,
I am doing the switching lab and I am surprised to see that every bridge is saying the it is the root bridge for vlan 1.
I have 4X3550 switches. I am attaching the commands output for each switch so that you guys can help me troubleshoot the issue. (This post is going to be long [:)])
The command "switchport trunk allowed vlan remove 50" has no effect on the switch4 according to LAB 1.5.
==============================
SWITCH1
==============================
SW1#show interface trunk
Port Mode Encapsulation Status Native vlan
Fa0/13 on 802.1q trunking 666
Fa0/16 on 802.1q trunking 666
Fa0/19 on 802.1q trunking 666
Port Vlans allowed on trunk
Fa0/13 1-4094
Fa0/16 1-4094
Fa0/19 1-4094
Port Vlans allowed and active in management domain
Fa0/13 1,10,20,30,40,50,60
Fa0/16 1,10,20,30,40,50,60
Fa0/19 1,10,20,30,40,50,60
Port Vlans in spanning tree forwarding state and not pruned
Fa0/13 1,10,20,30,40,50,60
Fa0/16 1,10,20,30,40,50,60
Fa0/19 1,10,20,30,40,50,60
SW1#sh vlan br
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/3, Fa0/6, Fa0/9, Fa0/10
Fa0/11, Fa0/12, Fa0/14, Fa0/15
Fa0/17, Fa0/18, Fa0/20, Fa0/21
Fa0/22, Fa0/23, Fa0/24, Fa0/25
Fa0/26, Fa0/27, Fa0/28, Fa0/29
Fa0/30, Fa0/31, Fa0/32, Fa0/33
Fa0/34, Fa0/35, Fa0/36, Fa0/37
Fa0/38, Fa0/39, Fa0/40, Fa0/41
Fa0/42, Fa0/43, Fa0/44, Fa0/45
Fa0/46, Fa0/47, Fa0/48, Gi0/1
Gi0/2
10 SALES active Fa0/1, Fa0/8
20 ACCOUNTING active Fa0/4, Fa0/5
30 MANAGEMENT active
40 CUSTOMER_SERVICE active
50 WAREHOUSE active
60 GUEST_ACCESS active Fa0/2, Fa0/7
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
SW1#
SW1#sh span
SW1#show spa
SW1#show spanning-tree
VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 32769
Address 0009.e8f4.3980
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32769 (priority 32768 sys-id-ext 1)
Address 0009.e8f4.3980
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/13 Desg FWD 19 128.13 P2p
Fa0/16 Desg FWD 19 128.16 P2p
Fa0/19 Desg FWD 19 128.19 P2p
VLAN0010
Spanning tree enabled protocol ieee
Root ID Priority 32778
Address 0009.e8f4.3980
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32778 (priority 32768 sys-id-ext 10)
Address 0009.e8f4.3980
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/1 Desg FWD 19 128.1 P2p
Fa0/13 Desg FWD 19 128.13 P2p
Fa0/16 Desg FWD 19 128.16 P2p
Fa0/19 Desg FWD 19 128.19 P2p
VLAN0020
Spanning tree enabled protocol ieee
Root ID Priority 32788
Address 0009.e8f4.3980
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32788 (priority 32768 sys-id-ext 20)
Address 0009.e8f4.3980
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/5 Desg FWD 19 128.5 P2p
Fa0/13 Desg FWD 19 128.13 P2p
Fa0/16 Desg FWD 19 128.16 P2p
Fa0/19 Desg FWD 19 128.19 P2p
VLAN0030
Spanning tree enabled protocol ieee
Root ID Priority 32798
Address 0009.e8f4.3980
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32798 (priority 32768 sys-id-ext 30)
Address 0009.e8f4.3980
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/13 Desg FWD 19 128.13 P2p
Fa0/16 Desg FWD 19 128.16 P2p
Fa0/19 Desg FWD 19 128.19 P2p
VLAN0040
Spanning tree enabled protocol ieee
Root ID Priority 32808
Address 0009.e8f4.3980
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32808 (priority 32768 sys-id-ext 40)
Address 0009.e8f4.3980
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/13 Desg FWD 19 128.13 P2p
Fa0/16 Desg FWD 19 128.16 P2p
Fa0/19 Desg FWD 19 128.19 P2p
VLAN0050
Spanning tree enabled protocol ieee
Root ID Priority 32818
Address 0009.e8f4.3980
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32818 (priority 32768 sys-id-ext 50)
Address 0009.e8f4.3980
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/13 Desg FWD 19 128.13 P2p
Fa0/16 Desg FWD 19 128.16 P2p
Fa0/19 Desg FWD 19 128.19 P2p
VLAN0060
Spanning tree enabled protocol ieee
Root ID Priority 32828
Address 0009.e8f4.3980
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32828 (priority 32768 sys-id-ext 60)
Address 0009.e8f4.3980
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/13 Desg FWD 19 128.13 P2p
Fa0/16 Desg FWD 19 128.16 P2p
Fa0/19 Desg FWD 19 128.19 P2p
==============================
SWITCH2
==============================
SW2#show interface trunk
Port Mode Encapsulation Status Native vlan
Fa0/13 on 802.1q trunking 666
Fa0/17 on 802.1q trunking 666
Fa0/21 on 802.1q trunking 666
Port Vlans allowed on trunk
Fa0/13 1-4094
Fa0/17 1-4094
Fa0/21 1-4094
Port Vlans allowed and active in management domain
Fa0/13 1,10,20,30,40,50,60
Fa0/17 1,10,20,30,40,50,60
Fa0/21 1,10,20,30,40,50,60
Port Vlans in spanning tree forwarding state and not pruned
Fa0/13 1,10,20,30,40,50,60
Fa0/17 1
Fa0/21 1,10,20,30,40,50,60
SW2#show vlan brief
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/4, Fa0/6, Fa0/7, Fa0/10
Fa0/11, Fa0/12, Fa0/14, Fa0/15
Fa0/16, Fa0/18, Fa0/19, Fa0/20
Fa0/22, Fa0/23, Fa0/24, Fa0/25
Fa0/26, Fa0/27, Fa0/28, Fa0/29
Fa0/30, Fa0/31, Fa0/32, Fa0/33
Fa0/34, Fa0/35, Fa0/36, Fa0/37
Fa0/38, Fa0/39, Fa0/40, Fa0/41
Fa0/42, Fa0/43, Fa0/44, Fa0/45
Fa0/46, Fa0/47, Fa0/48, Gi0/1
Gi0/2
10 SALES active
20 ACCOUNTING active Fa0/2
30 MANAGEMENT active Fa0/5, Fa0/8, Fa0/9
40 CUSTOMER_SERVICE active Fa0/1, Fa0/3
50 WAREHOUSE active
60 GUEST_ACCESS active
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
SW2#show span
SW2#show spanning-tree
VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 32769
Address 000a.4144.3c80
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32769 (priority 32768 sys-id-ext 1)
Address 000a.4144.3c80
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/13 Desg FWD 19 128.13 P2p
Fa0/17 Desg FWD 19 128.17 P2p
Fa0/21 Desg FWD 19 128.21 P2p
VLAN0010
Spanning tree enabled protocol ieee
Root ID Priority 32778
Address 0009.e8f4.3980
Cost 19
Port 13 (FastEthernet0/13)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32778 (priority 32768 sys-id-ext 10)
Address 000a.4144.3c80
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/13 Root FWD 19 128.13 P2p
Fa0/17 Altn BLK 19 128.17 P2p
Fa0/21 Desg FWD 19 128.21 P2p
VLAN0020
Spanning tree enabled protocol ieee
Root ID Priority 32788
Address 0009.e8f4.3980
Cost 19
Port 13 (FastEthernet0/13)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32788 (priority 32768 sys-id-ext 20)
Address 000a.4144.3c80
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/2 Desg FWD 19 128.2 P2p
Fa0/13 Root FWD 19 128.13 P2p
Fa0/17 Altn BLK 19 128.17 P2p
Fa0/21 Desg FWD 19 128.21 P2p
VLAN0030
Spanning tree enabled protocol ieee
Root ID Priority 32798
Address 0009.e8f4.3980
Cost 19
Port 13 (FastEthernet0/13)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32798 (priority 32768 sys-id-ext 30)
Address 000a.4144.3c80
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/13 Root FWD 19 128.13 P2p
Fa0/17 Altn BLK 19 128.17 P2p
Fa0/21 Desg FWD 19 128.21 P2p
VLAN0040
Spanning tree enabled protocol ieee
Root ID Priority 32808
Address 0009.e8f4.3980
Cost 19
Port 13 (FastEthernet0/13)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32808 (priority 32768 sys-id-ext 40)
Address 000a.4144.3c80
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/13 Root FWD 19 128.13 P2p
Fa0/17 Altn BLK 19 128.17 P2p
Fa0/21 Desg FWD 19 128.21 P2p
VLAN0050
Spanning tree enabled protocol ieee
Root ID Priority 32818
Address 0009.e8f4.3980
Cost 19
Port 13 (FastEthernet0/13)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32818 (priority 32768 sys-id-ext 50)
Address 000a.4144.3c80
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/13 Root FWD 19 128.13 P2p
Fa0/17 Altn BLK 19 128.17 P2p
Fa0/21 Desg FWD 19 128.21 P2p
VLAN0060
Spanning tree enabled protocol ieee
Root ID Priority 32828
Address 0009.e8f4.3980
Cost 19
Port 13 (FastEthernet0/13)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32828 (priority 32768 sys-id-ext 60)
Address 000a.4144.3c80
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/13 Root FWD 19 128.13 P2p
Fa0/17 Altn BLK 19 128.17 P2p
Fa0/21 Desg FWD 19 128.21 P2p
SWITCH3
==============================
==============================
SWITCH4
==============================
SW4#show vlan brief
Comments
I'll have a stab at this -
Do:
show interfaces fa0/13 switchport
show interfaces fa0/16 switchport
show interfaces fa0/19 switchport
Paste output :-)
On Wed, Sep 8, 2010 at 8:36 PM, mahirali <[email protected]> wrote:
SW1#sh int f0/13 switchport
Name: Fa0/13
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 666 (Inactive)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none
SW1#
SW1#sh int f0/16 switchport
Name: Fa0/16
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 666 (Inactive)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none
SW1#
SW1#sh int f0/19 switchport
Name: Fa0/19
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 666 (Inactive)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none
They should all agree on who
is the root bridge for all VLANs. Post the show run output from the four of
them.
Brian McGahan, CCIE #8593 (R&S/SP/Security)
[email protected]
Internetwork Expert, Inc.
http://www.INE.com
Toll Free: 877-224-8987 x 705
Outside US: 775-826-4344 x 705
Online Community: http://www.IEOC.com
CCIE Blog: http://blog.INE.com
From: [email protected]
[mailto:[email protected]] On Behalf Of mahirali
Sent: Wednesday, September 08, 2010 12:37 PM
To: Brian McGahan
Subject: [ccnp] every switch is the root in vlan 1
Hello Everybody,
I am doing the switching lab and I am surprised to see that every bridge is
saying the it is the root bridge for vlan 1.
I have 4X3550 switches. I am attaching the commands output for each switch
)
so that you guys can help me troubleshoot the issue. (This post is going to be
long
The command "switchport trunk allowed vlan remove 50" has no
effect on the switch4 according to LAB 1.5.
==============================
SWITCH1
==============================
SW1#show interface trunk
Port Mode
Encapsulation Status Native vlan
Fa0/13 on
802.1q trunking 666
Fa0/16 on
802.1q trunking 666
Fa0/19 on
802.1q trunking 666
Port Vlans allowed on trunk
Fa0/13 1-4094
Fa0/16 1-4094
Fa0/19 1-4094
Port Vlans allowed and active in management
domain
Fa0/13 1,10,20,30,40,50,60
Fa0/16 1,10,20,30,40,50,60
Fa0/19 1,10,20,30,40,50,60
Port Vlans in spanning tree forwarding state and
not pruned
Fa0/13 1,10,20,30,40,50,60
Fa0/16 1,10,20,30,40,50,60
Fa0/19 1,10,20,30,40,50,60
------------------------------------
!
interface FastEthernet0/13
switchport trunk encapsulation dot1q
switchport trunk native vlan 666
switchport mode trunk
!
interface FastEthernet0/16
switchport trunk encapsulation dot1q
switchport trunk native vlan 666
switchport mode trunk
!
interface FastEthernet0/19
switchport trunk encapsulation dot1q
switchport trunk native vlan 666
switchport mode trunk
!
----------------------------------------
SW1#sh vlan br
VLAN Name
Status Ports
---- -------------------------------- ---------
-------------------------------
1 default
active Fa0/3, Fa0/6,
Fa0/9, Fa0/10
Fa0/11, Fa0/12, Fa0/14, Fa0/15
Fa0/17, Fa0/18, Fa0/20, Fa0/21
Fa0/22, Fa0/23, Fa0/24, Fa0/25
Fa0/26, Fa0/27, Fa0/28, Fa0/29
Fa0/30, Fa0/31, Fa0/32, Fa0/33
Fa0/34, Fa0/35, Fa0/36, Fa0/37
Fa0/38, Fa0/39, Fa0/40, Fa0/41
Fa0/42, Fa0/43, Fa0/44, Fa0/45
Fa0/46, Fa0/47, Fa0/48, Gi0/1
Gi0/2
10 SALES
active Fa0/1, Fa0/8
20 ACCOUNTING
active Fa0/4, Fa0/5
30 MANAGEMENT
active
40 CUSTOMER_SERVICE
active
50 WAREHOUSE
active
60 GUEST_ACCESS
active Fa0/2, Fa0/7
1002 fddi-default
act/unsup
1003 token-ring-default
act/unsup
1004 fddinet-default
act/unsup
1005 trnet-default
act/unsup
SW1#
SW1#sh span
SW1#show spa
SW1#show spanning-tree
VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 32769
Address
0009.e8f4.3980
This bridge is the root
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32769 (priority
32768 sys-id-ext 1)
Address
0009.e8f4.3980
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/13 Desg FWD 19
128.13 P2p
Fa0/16 Desg FWD 19
128.16 P2p
Fa0/19 Desg FWD 19
128.19 P2p
VLAN0010
Spanning tree enabled protocol ieee
Root ID Priority 32778
Address
0009.e8f4.3980
This bridge is the root
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32778 (priority
32768 sys-id-ext 10)
Address
0009.e8f4.3980
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/1 Desg FWD 19
128.1 P2p
Fa0/13 Desg FWD 19
128.13 P2p
Fa0/16 Desg FWD 19
128.16 P2p
Fa0/19 Desg FWD 19
128.19 P2p
VLAN0020
Spanning tree enabled protocol ieee
Root ID Priority 32788
Address
0009.e8f4.3980
This bridge is the root
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32788 (priority
32768 sys-id-ext 20)
Address
0009.e8f4.3980
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/5 Desg FWD 19
128.5 P2p
Fa0/13 Desg FWD 19
128.13 P2p
Fa0/16 Desg FWD 19
128.16 P2p
Fa0/19 Desg FWD 19
128.19 P2p
VLAN0030
Spanning tree enabled protocol ieee
Root ID Priority 32798
Address
0009.e8f4.3980
This bridge is the root
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32798 (priority
32768 sys-id-ext 30)
Address
0009.e8f4.3980
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr
Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/13 Desg FWD 19
128.13 P2p
Fa0/16 Desg FWD 19
128.16 P2p
Fa0/19 Desg FWD 19
128.19 P2p
VLAN0040
Spanning tree enabled protocol ieee
Root ID Priority 32808
Address
0009.e8f4.3980
This bridge is the root
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32808 (priority
32768 sys-id-ext 40)
Address
0009.e8f4.3980
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/13 Desg FWD 19
128.13 P2p
Fa0/16 Desg FWD 19
128.16 P2p
Fa0/19 Desg FWD 19
128.19 P2p
VLAN0050
Spanning tree enabled protocol ieee
Root ID Priority 32818
Address
0009.e8f4.3980
This bridge is the root
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32818 (priority
32768 sys-id-ext 50)
Address
0009.e8f4.3980
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/13 Desg FWD 19
128.13 P2p
Fa0/16 Desg FWD 19
128.16 P2p
Fa0/19 Desg FWD 19
128.19 P2p
VLAN0060
Spanning tree enabled protocol ieee
Root ID Priority 32828
Address
0009.e8f4.3980
This bridge is the root
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32828 (priority
32768 sys-id-ext 60)
Address
0009.e8f4.3980
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/13 Desg FWD 19
128.13 P2p
Fa0/16 Desg FWD 19
128.16 P2p
Fa0/19 Desg FWD 19
128.19 P2p
==============================
SWITCH2
==============================
SW2#show interface trunk
Port Mode
Encapsulation Status Native vlan
Fa0/13 on
802.1q trunking 666
Fa0/17 on
802.1q trunking 666
Fa0/21 on
802.1q trunking 666
Port Vlans allowed on trunk
Fa0/13 1-4094
Fa0/17 1-4094
Fa0/21 1-4094
Port Vlans allowed and active in management
domain
Fa0/13 1,10,20,30,40,50,60
Fa0/17 1,10,20,30,40,50,60
Fa0/21 1,10,20,30,40,50,60
Port Vlans in spanning tree forwarding state and
not pruned
Fa0/13 1,10,20,30,40,50,60
Fa0/17 1
Fa0/21 1,10,20,30,40,50,60
--------------------------------------------
!
interface FastEthernet0/13
switchport trunk encapsulation dot1q
switchport trunk native vlan 666
switchport mode trunk
!
interface FastEthernet0/17
switchport trunk encapsulation dot1q
switchport trunk native vlan 666
switchport mode trunk
!
interface FastEthernet0/21
switchport trunk encapsulation dot1q
switchport trunk native vlan 666
switchport mode trunk
!
-------------------------------------------
SW2#show vlan brief
VLAN Name
Status Ports
---- -------------------------------- ---------
-------------------------------
1 default
active Fa0/4, Fa0/6,
Fa0/7, Fa0/10
Fa0/11, Fa0/12, Fa0/14, Fa0/15
Fa0/16, Fa0/18, Fa0/19, Fa0/20
Fa0/22, Fa0/23, Fa0/24, Fa0/25
Fa0/26, Fa0/27, Fa0/28, Fa0/29
Fa0/30, Fa0/31, Fa0/32, Fa0/33
Fa0/34, Fa0/35, Fa0/36, Fa0/37
Fa0/38, Fa0/39, Fa0/40, Fa0/41
Fa0/42, Fa0/43, Fa0/44, Fa0/45
Fa0/46, Fa0/47, Fa0/48, Gi0/1
Gi0/2
10 SALES
active
20 ACCOUNTING
active Fa0/2
30 MANAGEMENT
active Fa0/5, Fa0/8, Fa0/9
40 CUSTOMER_SERVICE
active Fa0/1, Fa0/3
50 WAREHOUSE
active
60 GUEST_ACCESS
active
1002 fddi-default
act/unsup
1003 token-ring-default
act/unsup
1004 fddinet-default
act/unsup
1005 trnet-default
act/unsup
SW2#show span
SW2#show spanning-tree
VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 32769
Address
000a.4144.3c80
This bridge is the root
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32769 (priority
32768 sys-id-ext 1)
Address
000a.4144.3c80
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/13 Desg FWD 19
128.13 P2p
Fa0/17 Desg FWD 19
128.17 P2p
Fa0/21 Desg FWD 19
128.21 P2p
VLAN0010
Spanning tree enabled protocol ieee
Root ID Priority 32778
Address
0009.e8f4.3980
Cost
19
Port
13 (FastEthernet0/13)
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32778 (priority
32768 sys-id-ext 10)
Address
000a.4144.3c80
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/13 Root FWD 19
128.13 P2p
Fa0/17 Altn BLK 19
128.17 P2p
Fa0/21 Desg FWD 19
128.21 P2p
VLAN0020
Spanning tree enabled protocol ieee
Root ID Priority 32788
Address
0009.e8f4.3980
Cost
19
Port
13 (FastEthernet0/13)
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32788 (priority
32768 sys-id-ext 20)
Address
000a.4144.3c80
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/2 Desg FWD 19
128.2 P2p
Fa0/13 Root FWD 19
128.13 P2p
Fa0/17 Altn BLK 19
128.17 P2p
Fa0/21 Desg FWD 19
128.21 P2p
VLAN0030
Spanning tree enabled protocol ieee
Root ID Priority 32798
Address
0009.e8f4.3980
Cost
19
Port
13 (FastEthernet0/13)
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32798 (priority
32768 sys-id-ext 30)
Address
000a.4144.3c80
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/13 Root FWD 19
128.13 P2p
Fa0/17 Altn BLK 19
128.17 P2p
Fa0/21 Desg FWD 19
128.21 P2p
VLAN0040
Spanning tree enabled protocol ieee
Root ID Priority 32808
Address
0009.e8f4.3980
Cost
19
Port
13 (FastEthernet0/13)
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32808 (priority
32768 sys-id-ext 40)
Address
000a.4144.3c80
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/13 Root FWD 19
128.13 P2p
Fa0/17 Altn BLK 19
128.17 P2p
Fa0/21 Desg FWD 19
128.21 P2p
VLAN0050
Spanning tree enabled protocol ieee
Root ID Priority 32818
Address 0009.e8f4.3980
Cost
19
Port
13 (FastEthernet0/13)
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32818 (priority
32768 sys-id-ext 50)
Address 000a.4144.3c80
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/13 Root FWD 19
128.13 P2p
Fa0/17 Altn BLK 19
128.17 P2p
Fa0/21 Desg FWD 19
128.21 P2p
VLAN0060
Spanning tree enabled protocol ieee
Root ID Priority 32828
Address
0009.e8f4.3980
Cost
19
Port
13 (FastEthernet0/13)
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32828 (priority
32768 sys-id-ext 60)
Address 000a.4144.3c80
Hello Time 2 sec
Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/13 Root FWD 19
128.13 P2p
Fa0/17 Altn BLK 19
128.17 P2p
Fa0/21 Desg FWD 19
128.21 P2p
==============================
SWITCH3
==============================
SW3#show interface trunk
Port Mode
Encapsulation Status
Native vlan
Fa0/13 on
802.1q trunking
666
Fa0/17 on
802.1q trunking
666
Fa0/20 on
802.1q trunking
666
Port Vlans allowed on trunk
Fa0/13 1-4094
Fa0/17 1-4094
Fa0/20 1-4094
Port Vlans allowed and active in
management domain
Fa0/13 1,10,20,30,40,50,60
Fa0/17 1,10,20,30,40,50,60
Fa0/20 1,10,20,30,40,50,60
Port Vlans in spanning tree
forwarding state and not pruned
Fa0/13 1,10,20,30,40,50,60
Fa0/17 1,10,20,30,40,50,60
Fa0/20 1,10,20,30,40,50,60
-----------------------------------
!
interface FastEthernet0/13
switchport trunk encapsulation dot1q
switchport trunk native vlan 666
switchport mode trunk
!
interface FastEthernet0/17
switchport trunk encapsulation dot1q
switchport trunk native vlan 666
switchport mode trunk
!
interface FastEthernet0/20
switchport trunk encapsulation dot1q
switchport trunk native vlan 666
switchport mode trunk
!
-----------------------------------
SW3#show vlan brief
VLAN Name
Status Ports
---- -------------------------------- ---------
-------------------------------
1 default
active
Fa0/1, Fa0/5, Fa0/6, Fa0/7
Fa0/8, Fa0/12, Fa0/14, Fa0/15
Fa0/16, Fa0/18, Fa0/19, Fa0/21
Fa0/22, Fa0/23, Fa0/24, Fa0/25
Fa0/26, Fa0/27, Fa0/28, Fa0/29
Fa0/30, Fa0/31, Fa0/32, Fa0/33
Fa0/34, Fa0/35, Fa0/36, Fa0/37
Fa0/38, Fa0/39, Fa0/40, Fa0/41
Fa0/42, Fa0/43, Fa0/44, Fa0/45
Fa0/46, Fa0/47, Fa0/48, Gi0/1
Gi0/2
10 SALES
active
Fa0/2, Fa0/3
20 ACCOUNTING
active
30 MANAGEMENT
active
40 CUSTOMER_SERVICE
active
50 WAREHOUSE
active Fa0/4,
Fa0/9
60 GUEST_ACCESS
active Fa0/10, Fa0/11
1002 fddi-default
act/unsup
1003 token-ring-default
act/unsup
1004 fddinet-default
act/unsup
1005 trnet-default
act/unsup
SW3#
SW3#
SW3#show span
SW3#show spanning-tree
VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 32769
Address
0009.e8fa.0d80
This bridge
is the root
Hello Time
2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32769
(priority 32768 sys-id-ext 1)
Address
0009.e8fa.0d80
Hello Time
2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time
300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/13 Desg
FWD 19 128.13 P2p
Fa0/17 Desg
FWD 19 128.17 P2p
Fa0/20 Desg
FWD 19 128.20 P2p
VLAN0010
Spanning tree enabled protocol ieee
Root ID Priority 32778
Address
0009.e8f4.3980
Cost
19
Port
13 (FastEthernet0/13)
Hello Time
2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32778
(priority 32768 sys-id-ext 10)
Address
0009.e8fa.0d80
Hello Time
2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time
300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/3 Desg
FWD 19 128.3 P2p
Fa0/13 Root
FWD 19 128.13 P2p
Fa0/17 Desg
FWD 19 128.17 P2p
Fa0/20 Desg
FWD 19 128.20 P2p
VLAN0020
Spanning tree enabled protocol ieee
Root ID Priority 32788
Address
0009.e8f4.3980
Cost
19
Port
13 (FastEthernet0/13)
Hello Time
2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32788
(priority 32768 sys-id-ext 20)
Address
0009.e8fa.0d80
Hello Time
2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time
300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/13 Root
FWD 19 128.13 P2p
Fa0/17 Desg
FWD 19 128.17 P2p
Fa0/20 Desg
FWD 19 128.20 P2p
VLAN0030
Spanning tree enabled protocol ieee
Root ID Priority 32798
Address
0009.e8f4.3980
Cost
19
Port
13 (FastEthernet0/13)
Hello Time
2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32798
(priority 32768 sys-id-ext 30)
Address
0009.e8fa.0d80
Hello Time
2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time
300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/13 Root
FWD 19 128.13 P2p
Fa0/17 Desg
FWD 19 128.17 P2p
Fa0/20 Desg
FWD 19 128.20 P2p
VLAN0040
Spanning tree enabled protocol ieee
Root ID Priority 32808
Address
0009.e8f4.3980
Cost
19
Port
13 (FastEthernet0/13)
Hello Time
2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32808
(priority 32768 sys-id-ext 40)
Address
0009.e8fa.0d80
Hello Time
2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time
300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/13 Root
FWD 19 128.13 P2p
Fa0/17 Desg
FWD 19 128.17 P2p
Fa0/20 Desg
FWD 19 128.20 P2p
VLAN0050
Spanning tree enabled protocol ieee
Root ID Priority 32818
Address
0009.e8f4.3980
Cost
19
Port
13 (FastEthernet0/13)
Hello Time
2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32818
(priority 32768 sys-id-ext 50)
Address
0009.e8fa.0d80
Hello Time
2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time
300 sec
Interface Role Sts Cost
Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Fa0/13 Root
FWD 19 128.13 P2p
Fa0/17 Desg
FWD 19 128.17 P2p
Fa0/20 Desg
FWD 19 128.20 P2p
VLAN0060
Spanning tree enabled protocol ieee
Root ID Priority 32828
<p class=MsoNorm
=======================
SWITCH 1
=======================
SW1#sh run
Building configuration...
Current configuration : 4284 bytes
!
! Last configuration change at 14:53:03 UTC Wed Sep 8 2010
! NVRAM config last updated at 14:53:03 UTC Wed Sep 8 2010
!
version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname SW1
!
!
!
!
no aaa new-model
authentication mac-move permit
ip subnet-zero
!
!
!
!
!
spanning-tree mode pvst
spanning-tree etherchannel guard misconfig
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
!
!
!
!
!
interface FastEthernet0/1
switchport access vlan 10
switchport mode access
!
interface FastEthernet0/2
switchport access vlan 60
switchport mode access
!
interface FastEthernet0/3
switchport mode dynamic desirable
!
interface FastEthernet0/4
switchport access vlan 20
switchport mode access
!
interface FastEthernet0/5
switchport access vlan 20
switchport mode access
!
interface FastEthernet0/6
switchport mode dynamic desirable
!
interface FastEthernet0/7
switchport access vlan 60
switchport mode access
!
interface FastEthernet0/8
switchport access vlan 10
switchport mode access
!
interface FastEthernet0/9
switchport mode dynamic desirable
!
interface FastEthernet0/10
switchport mode dynamic desirable
!
interface FastEthernet0/11
switchport mode dynamic desirable
!
interface FastEthernet0/12
switchport mode dynamic desirable
!
interface FastEthernet0/13
switchport trunk encapsulation dot1q
switchport trunk native vlan 666
switchport mode trunk
!
interface FastEthernet0/14
switchport mode dynamic desirable
shutdown
!
interface FastEthernet0/15
switchport mode dynamic desirable
shutdown
!
interface FastEthernet0/16
switchport trunk encapsulation dot1q
switchport trunk native vlan 666
switchport mode trunk
!
interface FastEthernet0/17
switchport mode dynamic desirable
shutdown
!
interface FastEthernet0/18
switchport mode dynamic desirable
shutdown
!
interface FastEthernet0/19
switchport trunk encapsulation dot1q
switchport trunk native vlan 666
switchport mode trunk
!
interface FastEthernet0/20
switchport mode dynamic desirable
shutdown
!
interface FastEthernet0/21
switchport mode dynamic desirable
shutdown
!
interface FastEthernet0/22
switchport mode dynamic desirable
!
interface FastEthernet0/23
switchport mode dynamic desirable
!
interface FastEthernet0/24
switchport mode dynamic desirable
!
interface FastEthernet0/25
switchport mode dynamic desirable
!
interface FastEthernet0/26
switchport mode dynamic desirable
!
interface FastEthernet0/27
switchport mode dynamic desirable
!
interface FastEthernet0/28
switchport mode dynamic desirable
!
interface FastEthernet0/29
switchport mode dynamic desirable
!
interface FastEthernet0/30
switchport mode dynamic desirable
!
interface FastEthernet0/31
switchport mode dynamic desirable
!
interface FastEthernet0/32
switchport mode dynamic desirable
!
interface FastEthernet0/33
switchport mode dynamic desirable
!
interface FastEthernet0/34
switchport mode dynamic desirable
!
interface FastEthernet0/35
switchport mode dynamic desirable
!
interface FastEthernet0/36
switchport mode dynamic desirable
!
interface FastEthernet0/37
switchport mode dynamic desirable
!
interface FastEthernet0/38
switchport mode dynamic desirable
!
interface FastEthernet0/39
switchport mode dynamic desirable
!
interface FastEthernet0/40
switchport mode dynamic desirable
!
interface FastEthernet0/41
switchport mode dynamic desirable
!
interface FastEthernet0/42
switchport mode dynamic desirable
!
interface FastEthernet0/43
switchport mode dynamic desirable
!
interface FastEthernet0/44
switchport mode dynamic desirable
!
interface FastEthernet0/45
switchport mode dynamic desirable
!
interface FastEthernet0/46
switchport mode dynamic desirable
!
interface FastEthernet0/47
switchport mode dynamic desirable
!
interface FastEthernet0/48
switchport mode dynamic desirable
!
interface GigabitEthernet0/1
switchport mode dynamic desirable
!
interface GigabitEthernet0/2
switchport mode dynamic desirable
!
interface Vlan1
no ip address
shutdown
!
ip classless
ip http server
ip http secure-server
!
!
ip sla enable reaction-alerts
!
control-plane
!
!
line con 0
exec-timeout 0 0
logging synchronous
line vty 0 4
login
line vty 5 15
login
!
end
SWITCH 2
=======================
SWITCH 3
=======================
SWITCH 4
=======================
Fa0/13 1,10,20,30,40,50,60
Fa0/16 1,10,20,30,40,50,60
Fa0/19 1,10,20,30,40,50,60
--
Garry L. Baker
"There is no 'patch' for stupidity." - www.sqlsecurity.com
I am running through the CCNP Switch chapters too, but my VLAN 1 shows my root is SW2 (just happens to be the lowest MAC address). I didn't do anything fancy, just following the book...bug with the IOS? Did you check to see if there were any problems with that particular release?
Jalon
I am using c3550-ipservicesk9-mz.122-52.SE.bin this is the IOS I am using.
Jeez, can we stop quoting the rediculously-long posts? [:P]
That problem makes no sense at all, unless they didn't have connectivity with eachother. How are you connected to these switches? Via console cables? Are the links between these switches up and up? You can pass traffic between them?
Just restart my switches and everything comes back to normal, must be an IOS bug.
Thanks for commenting