Spanning-Tree Issue on Traffic Network Ring 6 IE-4000

[JTS-Wireless]

I have created a post a over a week ago having issues seeing access points from the main switches on a traffic network ring. That issue has been fixed, seeing that it was a a routing issue, but now, a spanning-tree issue has cropped up instead. Currently, the state of the interfaces need to be forwarding, but generally, at least 1 port on each site is being blocked, and though some sites get all the ports the access points connecting to are all in the forwarding state, this changes every few hours at each site.

The network is on Spanning-tree mode rapid pvst.

I have added the network topology as well as the the port configurations, spanning-tree configuration and output for the show spanning-tree command for the management VLAN.

My main issue as stated previously is that I need the ports to all be forwarding, but these ports are all trunk ports.

Node A# show spanning-tree vlan 5

VLAN0005

Spanning tree enabled protocol rstp

Root ID Priority 8197

Address 3473.2d3d.6180

Cost 3

Port 96 (Port-channel5)

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 8197 (priority 8192 sys-id-ext 5)

Address 3473.2d3d.6200

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type

------------------- ---- --- --------- -------- --------------------------------

Gi1/1 Desg FWD 4 128.1 P2p

Gi1/2 Desg BLK 19 128.2 P2p Dispute

Gi1/3 Desg FWD 19 128.3 P2p

Gi1/4 Desg FWD 4 128.4 P2p

Po1 Desg FWD 3 128.64 P2p

Po5 Root FWD 3 128.96 P2p

Node A Port Configurations

spanning-tree mode rapid-pvst

spanning-tree extend system-id

spanning-tree vlan 1-4093 priority 8192

!

interface Port-channel1

switchport trunk native vlan 1110

switchport mode trunk

!

interface Port-channel5

switchport trunk native vlan 1120

switchport mode trunk

!

interface GigabitEthernet1/1

description AP 1

switchport mode trunk

!

interface GigabitEthernet1/2

description AP 2

switchport mode trunk

!

interface GigabitEthernet1/3

description AP 3

switchport mode trunk

!

interface GigabitEthernet1/4

description AP 4

switchport mode trunk

!

interface GigabitEthernet1/5

switchport trunk native vlan 1110

switchport mode trunk

channel-group 1 mode active

!

interface GigabitEthernet1/6

switchport trunk native vlan 1120

switchport mode trunk

channel-group 5 mode active

!

interface GigabitEthernet1/7

switchport trunk native vlan 1110

switchport mode trunk

channel-group 1 mode active

!

interface GigabitEthernet1/8

switchport trunk native vlan 1120

switchport mode trunk

channel-group 5 mode active

!

interface GigabitEthernet1/9

description UPLINk2AP

switchport mode trunk

!

interface GigabitEthernet1/10

description UPLINk2AP

port-type eni

switchport mode trunk

!

interface GigabitEthernet1/11

description UPlink2LAN

port-type eni

switchport mode trunk

!

interface GigabitEthernet1/12

description T-ShootPort

port-type eni

switchport access vlan 5

switchport mode access

!

interface Vlan1

no ip address

shutdown

!

interface Vlan5

description MGMT

ip address x.x.x.x 255.255.255.0 

Node B# show spanning-tree vlan 5

VLAN0005

Spanning tree enabled protocol rstp

Root ID Priority 8197

Address 3473.2d3d.6180

Cost 7

Port 64 (Port-channel1)

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 8197 (priority 8192 sys-id-ext 5)

Address 806a.0003.5300

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type

------------------- ---- --- --------- -------- --------------------------------

Gi1/13 Desg FWD 4 128.13 P2p

Gi1/14 Desg FWD 4 128.14 P2p

Po1 Root FWD 3 128.64 P2p

Po2 Altn BLK 3 128.72 P2p

Node B Port Configurations

spanning-tree mode rapid-pvst

spanning-tree extend system-id

spanning-tree vlan 1-4093 priority 8192

!

interface Port-channel1

description PTP_OSPF_Link_Node A

switchport trunk native vlan 1110

switchport mode trunk

!

interface Port-channel2

description PTP_OSPF_Link_Node E

switchport trunk native vlan 1150

switchport mode trunk

!

interface GigabitEthernet1/1

description UNUSED

shutdown

!

interface GigabitEthernet1/2

description UNUSED

shutdown

!

interface GigabitEthernet1/3

description UNUSED

shutdown

!

interface GigabitEthernet1/4

description UNUSED

shutdown

!

interface GigabitEthernet1/5

switchport trunk native vlan 1110

switchport mode trunk

channel-group 1 mode active

!

interface GigabitEthernet1/6

switchport trunk native vlan 1150

switchport mode trunk

channel-group 2 mode active

!

interface GigabitEthernet1/7

switchport trunk native vlan 1110

switchport mode trunk

channel-group 1 mode active

!

interface GigabitEthernet1/8

switchport trunk native vlan 1150

switchport mode trunk

channel-group 2 mode active

!

interface GigabitEthernet1/9

description PTP_OSPF_Link_Midway_Pump_Station

no switchport

ip address x.x.x.x  255.255.255.248 

!

interface GigabitEthernet1/10

description Firewall

no switchport

x.x.x.x 255.255.255.0 

!

interface GigabitEthernet1/11

description UPlink2LAN

switchport mode trunk

!

interface GigabitEthernet1/12

description Uplink to Traffic Server

port-type eni

switchport access vlan 7

switchport mode access

!

interface GigabitEthernet1/13

description AP 1

switchport mode trunk

!

interface GigabitEthernet1/14

description AP 2

switchport mode trunk

!

interface GigabitEthernet1/15

!

interface GigabitEthernet1/16

description T-ShootPort

port-type uni

switchport access vlan 5

switchport mode access

!

interface GigabitEthernet1/17

!

interface GigabitEthernet1/18

!

interface GigabitEthernet1/19

!

interface GigabitEthernet1/20

!

interface Vlan1

no ip address

shutdown

!

interface Vlan5

--More--

description MGMT

ip address x.x.x.x 255.255.255.0 

!

Node C#show spanning-tree vlan 5

VLAN0005

Spanning tree enabled protocol rstp

Root ID Priority 8197

Address 3473.2d3d.6180

This bridge is the root

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 8197 (priority 8192 sys-id-ext 5)

Address 3473.2d3d.6180

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type

------------------- ---- --- --------- -------- --------------------------------

Gi1/1 Desg BLK 4 128.1 P2p Dispute

Gi1/2 Desg FWD 4 128.2 P2p

Gi1/3 Desg FWD 4 128.3 P2p

Gi1/4 Desg FWD 19 128.4 P2p

Po4 Desg FWD 3 128.88 P2p

Po5 Desg FWD 3 128.96 P2p

Node C Port Configurations

spanning-tree mode rapid-pvst

spanning-tree extend system-id

spanning-tree vlan 1-4093 priority 8192

!

interface Port-channel4

switchport trunk native vlan 1130

switchport mode trunk

!

interface Port-channel5

switchport trunk native vlan 1120

switchport mode trunk

!

interface GigabitEthernet1/1

description AP 1

switchport mode trunk

!

interface GigabitEthernet1/2

description AP 2

switchport mode trunk

!

interface GigabitEthernet1/3

description AP 3

switchport mode trunk

!

interface GigabitEthernet1/4

description AP 4

switchport mode trunk

!

interface GigabitEthernet1/5

switchport trunk native vlan 1120

switchport mode trunk

channel-group 5 mode active

!

interface GigabitEthernet1/6

switchport trunk native vlan 1130

switchport mode trunk

channel-group 4 mode active

!

interface GigabitEthernet1/7

switchport trunk native vlan 1120

switchport mode trunk

channel-group 5 mode active

!

interface GigabitEthernet1/8

switchport trunk native vlan 1130

switchport mode trunk

channel-group 4 mode active

!

interface GigabitEthernet1/9

description UPLINk2AP

switchport mode trunk

!

interface GigabitEthernet1/10

description UPLINk2AP

switchport mode trunk

!

interface GigabitEthernet1/11

description UPlink2LAN

switchport mode trunk

!

interface GigabitEthernet1/12

description T-ShootPort

port-type eni

switchport access vlan 5

switchport mode access

!

interface Vlan1

no ip address

shutdown

!

interface Vlan5

description MGMT

ip address x.x.x.x 255.255.255.0 

!

Node D# show spanning-tree vlan 5

VLAN0005

Spanning tree enabled protocol rstp

Root ID Priority 8197

Address 3473.2d3d.6180

Cost 3

Port 80 (Port-channel3)

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32773 (priority 32768 sys-id-ext 5)

Address 3473.2d74.f600

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type

------------------- ---- --- --------- -------- --------------------------------

Gi1/1 Desg BLK 4 128.1 P2p Dispute

Gi1/2 Desg FWD 19 128.2 P2p

Po3 Root FWD 3 128.80 P2p

Po4 Desg FWD 3 128.88 P2p

Node D Port Configurations

spanning-tree mode rapid-pvst

spanning-tree extend system-id

spanning-tree vlan 1-4093 priority 8192

!

interface Port-channel3

switchport trunk native vlan 1130

switchport mode trunk

!

interface Port-channel4

switchport trunk native vlan 1140

switchport mode trunk

!

interface GigabitEthernet1/1

description AP 1

switchport mode trunk

!

interface GigabitEthernet1/2

description AP 2

switchport mode trunk

!

interface GigabitEthernet1/3

description AP 3

shutdown

!

interface GigabitEthernet1/4

description AP 4

shutdown

!

interface GigabitEthernet1/5

switchport trunk native vlan 1130

switchport mode trunk

channel-group 3 mode active

!

interface GigabitEthernet1/6

switchport trunk native vlan 1140

switchport m

Mode trunk

channel-group 4 mode active

!

interface GigabitEthernet1/7

switchport trunk native vlan 1130

switchport mode trunk

channel-group 3 mode active

!

interface GigabitEthernet1/8

switchport trunk native vlan 1140

switchport mode trunk

channel-group 4 mode active

!

interface GigabitEthernet1/9

description UPLINk2AP

switchport mode trunk

!

interface GigabitEthernet1/10

description UPLINk2AP

port-type uni

switchport mode trunk

!

interface GigabitEthernet1/11

description UPlink2LAN

switchport mode trunk

!

interface GigabitEthernet1/12

description T-ShootPort

port-type uni

switchport access vlan 5

switchport mode access

!

interface Vlan1

no ip address

shutdown

!

interface Vlan5

description MGMT

ip address x.x.x.x 255.255.255.0 

!

Node E#show spanning-tree vlan 5

VLAN0005

Spanning tree enabled protocol rstp

Root ID Priority 8197

Address 3473.2d3d.6180

Cost 6

Port 80 (Port-channel3)

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 8197 (priority 8192 sys-id-ext 5)

Address 4c5d.3cb6.2a00

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type

------------------- ---- --- --------- -------- --------------------------------

Gi1/1 Desg FWD 4 128.1 P2p

Gi1/2 Desg BLK 4 128.2 P2p Dispute

Gi1/3 Desg FWD 19 128.3 P2p

Gi1/4 Desg FWD 4 128.4 P2p

Po2 Desg FWD 3 128.72 P2p

Po3 Root FWD 3 128.80 P2p

Node E Port Configurations

spanning-tree mode rapid-pvst

spanning-tree extend system-id

spanning-tree vlan 1-4093 priority 8192

!

interface Port-channel2

description PTP_OSPF_Link_Node B

switchport trunk native vlan 1150

switchport mode trunk

!

interface Port-channel3

switchport trunk native vlan 1140

switchport mode trunk

!

interface GigabitEthernet1/1

description AP 1

switchport mode trunk

!

interface GigabitEthernet1/2

description AP 2

switchport mode trunk

!

interface GigabitEthernet1/3

description AP 3

switchport mode trunk

!

interface GigabitEthernet1/4

description AP 4

switchport mode trunk

!

interface GigabitEthernet1/5

switchport trunk native vlan 1150

switchport mode trunk

channel-group 2 mode active

!

interface GigabitEthernet1/6

switchport trunk native vlan 1140

switchport mode trunk

channel-group 3 mode active

!

interface GigabitEthernet1/7

switchport trunk native vlan 1150

switchport mode trunk

channel-group 2 mode active

!

interface GigabitEthernet1/8

switchport trunk native vlan 1140

switchport mode trunk

channel-group 3 mode active

!

interface GigabitEthernet1/9

description UPLINk2AP

switchport mode trunk

!

interface GigabitEthernet1/10

description UPLINk2AP

port-type uni

switchport mode trunk

!

interface GigabitEthernet1/11

description UPlink2LAN

port-type uni

switchport mode trunk

!

interface GigabitEthernet1/12

description T-ShootPort

port-type uni

switchport access vlan 5

switchport mode access

!

interface Vlan1

no ip address

shutdown

!

interface Vlan5

description MGMT

ip address x.x.x.x 255.255.255.0 

!

[MHM Cisco World]

All port FWD that impossible for your design, 
ONE trunk must be BLK to broke the L2 LOOP
but 
since you run Rapid-PVST then you can do Spanning tree load balance when the VLANX in trunk Z is FWD but VLANY is BLK.
this need to make two switch as Spanning tree Root, one root for each VLAN.

[Jitendra Kumar]

Please check below document..

https://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/10556-16.html