- Cisco Community
- Technology and Support
- Networking
- Switching
- I did some further
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Mute
- Printer Friendly Page
Per VLAN STP BPDU
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
07-20-2017 09:57 AM - edited 03-08-2019 11:24 AM
I'm having an issue with SPT after adding more VLANS. For now I'm trying to set it up so all of my VLANS just take the same route with the same root bridge. The issue I'm having seems like it has a simple solution that I'm just overlooking. Here's what I know for sure.
STP Port, Bridge, and Root settings are the exact same for all VLANS.
VLAN 1 Elects Root Bridge just fine-- all other VLANS just elect themselves as Root Bridge.
VLAN 1 Sends and Recieves BPDU's just fine. All other/new vlans just send BPDU's but don't receive.
ALL VLANS allowed on all Trunk ports with no pruning.
Switch is in rapid-pvst mode
Root bridge for: VLAN0001, VLAN0201, VLAN0210, VLAN0220, VLAN0230, VLAN02
VLAN0260, VLAN0285, VLAN0290, VLAN0299, VLAN0310, VLAN0330, VLAN0340
VLAN0360
Extended system ID is enabled
Portfast Default is disabled
PortFast BPDU Guard Default is enabled
Portfast BPDU Filter Default is disabled
Loopguard Default is disabled
EtherChannel misconfig guard is enabled
UplinkFast is disabled
Stack port is StackPort1
BackboneFast is disabled
Configured Pathcost method used is short
---------------------- -------- --------- -------- ---------- ----------
VLAN0001 0 0 0 28 28
VLAN0201 0 0 0 6 6
VLAN0210 0 0 0 6 6
VLAN0220 0 0 0 6 6
VLAN0230 0 0 0 7 7
VLAN0240 0 0 0 6 6
VLAN0260 0 0 0 6 6
VLAN0285 0 0 0 6 6
VLAN0290 0 0 0 6 6
VLAN0299 0 0 0 6 6
VLAN0310 0 0 0 6 6
VLAN0330 0 0 0 6 6
VLAN0340 0 0 0 6 6
VLAN0360 0 0 0 6 6
---------------------- -------- --------- -------- ---------- ----------
14 vlans 0 0 0 107 107
Spanning tree enabled protocol rstp
Root ID Priority 20481
Address 001e.7a7e.0200
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Address 001e.7a7e.0200
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 600 sec
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/1 Desg FWD 4 128.1 P2p Edge
Gi1/0/2 Desg FWD 4 128.2 P2p Edge
Fa1/0/17 Desg FWD 19 128.19 P2p Edge
Fa1/0/18 Desg FWD 19 128.20 P2p Edge
Gi1/0/3 Desg FWD 4 128.27 P2p
Gi1/0/4 Desg FWD 4 112.28 P2p
Fa1/0/29 Desg FWD 19 128.33 P2p Edge
Fa1/0/30 Desg FWD 19 128.34 P2p Edge
Fa1/0/31 Desg FWD 19 128.35 P2p Edge
Fa1/0/35 Desg FWD 19 128.39 P2p Edge
Fa1/0/36 Desg FWD 19 128.40 P2p Edge
Fa1/0/37 Desg FWD 19 128.41 P2p Edge
Fa1/0/38 Desg FWD 19 128.42 P2p Edge
Fa1/0/43 Desg FWD 19 128.47 P2p Edge
Fa1/0/44 Desg FWD 19 128.48 P2p Edge
Fa1/0/46 Desg FWD 19 128.50 P2p Edge
Gi2/0/1 Desg FWD 4 128.55 P2p Edge
Gi2/0/2 Desg FWD 4 128.56 P2p Edge
Fa2/0/1 Desg FWD 19 128.57 P2p Edge
Fa2/0/2 Desg FWD 19 128.58 P2p Edge
Fa2/0/3 Desg FWD 19 128.59 P2p Edge
Fa2/0/4 Desg FWD 19 128.60 P2p Edge
Fa2/0/5 Desg FWD 19 128.61 P2p Edge
Fa2/0/6 Desg FWD 19 128.62 P2p Edge
Fa2/0/7 Desg FWD 19 128.63 P2p Edge
Fa2/0/15 Desg FWD 19 128.71 P2p Edge
Fa2/0/16 Desg FWD 19 128.72 P2p Edge
Gi2/0/4 Desg FWD 4 112.82 P2p
Spanning tree enabled protocol rstp
Root ID Priority 20681
Address 001e.7a7e.0200
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Address 001e.7a7e.0200
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 600 sec
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/3 Desg FWD 4 128.27 P2p Peer(STP)
Gi1/0/4 Desg FWD 4 112.28 P2p
Fa1/0/43 Desg FWD 19 128.47 P2p Edge
Fa1/0/44 Desg FWD 19 128.48 P2p Edge
Fa1/0/46 Desg FWD 19 128.50 P2p Edge
Gi2/0/4 Desg FWD 4 112.82 P2p
Spanning tree enabled protocol rstp
Root ID Priority 20690
Address 001e.7a7e.0200
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Address 001e.7a7e.0200
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 600 sec
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/3 Desg FWD 4 128.27 P2p
Gi1/0/4 Desg FWD 4 112.28 P2p
Fa1/0/43 Desg FWD 19 128.47 P2p Edge
Fa1/0/44 Desg FWD 19 128.48 P2p Edge
Fa1/0/46 Desg FWD 19 128.50 P2p Edge
Gi2/0/4 Desg FWD 4 112.82 P2p
-----------------------------------------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------------------------------------
SW1
-----------------------------------------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------------------------------------
SW1#show spanning-tree summary
Root bridge for: VLAN0201, VLAN0210, VLAN0220, VLAN0230, VLAN0240, VLAN0260
VLAN0285, VLAN0290, VLAN0299, VLAN0310, VLAN0330, VLAN0340, VLAN0360
Extended system ID is enabled
Portfast Default is disabled
PortFast BPDU Guard Default is enabled
Portfast BPDU Filter Default is disabled
Loopguard Default is disabled
EtherChannel misconfig guard is enabled
UplinkFast is disabled
BackboneFast is disabled
Configured Pathcost method used is short
---------------------- -------- --------- -------- ---------- ----------
VLAN0001 1 0 0 7 8
VLAN0201 0 0 0 4 4
VLAN0210 0 0 0 4 4
VLAN0220 0 0 0 4 4
VLAN0230 0 0 0 8 8
VLAN0240 0 0 0 4 4
VLAN0260 0 0 0 4 4
VLAN0285 0 0 0 4 4
VLAN0290 0 0 0 4 4
VLAN0299 0 0 0 4 4
VLAN0310 0 0 0 4 4
VLAN0330 0 0 0 4 4
VLAN0340 0 0 0 4 4
VLAN0360 0 0 0 4 4
---------------------- -------- --------- -------- ---------- ----------
14 vlans 1 0 0 63 64
SW1#show spanning-tree
Spanning tree enabled protocol rstp
Root ID Priority 20481
Address 001e.7a7e.0200
Cost 4
Port 27 (GigabitEthernet1/0/3)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Address 001e.7ab0.8380
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
------------------- ---- --- --------- -------- --------------------------------
Fa1/0/1 Desg FWD 19 128.3 P2p Edge
Fa1/0/13 Desg FWD 19 128.15 P2p Edge
Fa1/0/18 Desg FWD 19 128.20 P2p Edge
Fa1/0/19 Desg FWD 19 128.21 P2p Edge
Fa1/0/20 Desg FWD 19 128.22 P2p Edge
Gi1/0/3 Root FWD 4 112.27 P2p
Gi1/0/4 Altn BLK 4 112.28 P2p
Fa1/0/46 Desg FWD 19 128.50 P2p Edge
Spanning tree enabled protocol rstp
Root ID Priority 28873
Address 001e.7ab0.8380
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Address 001e.7ab0.8380
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
------------------- ---- --- --------- -------- --------------------------------
Fa1/0/1 Desg FWD 19 128.3 P2p Edge
Gi1/0/3 Desg FWD 4 112.27 P2p
Gi1/0/4 Desg FWD 4 112.28 P2p
Fa1/0/46 Desg FWD 19 128.50 P2p Edge
Spanning tree enabled protocol rstp
Root ID Priority 28882
Address 001e.7ab0.8380
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Address 001e.7ab0.8380
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
------------------- ---- --- --------- -------- --------------------------------
Fa1/0/1 Desg FWD 19 128.3 P2p Edge
Gi1/0/3 Desg FWD 4 112.27 P2p
Gi1/0/4 Desg FWD 4 112.28 P2p
Fa1/0/46 Desg FWD 19 128.50 P2p Edge
Spanning tree enabled protocol rstp
Root ID Priority 28892
Address 001e.7ab0.8380
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Address 001e.7ab0.8380
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
------------------- ---- --- --------- -------- --------------------------------
Fa1/0/1 Desg FWD 19 128.3 P2p Edge
Gi1/0/3 Desg FWD 4 112.27 P2p
Gi1/0/4 Desg FWD 4 112.28 P2p
Fa1/0/46 Desg FWD 19 128.50 P2p Edge
LOGGING
Log Buffer (4096 bytes):
AA AA 03 00000C 010B SSTP
264487: *Mar 1 09:45:36.262: CFG P:0000 V:02 T:02 F:3C R:7154 001e.7ab0.8380 00000000
264488: *Mar 1 09:45:36.262: B:7154 001e.7ab0.8380 70.1C A:0000 M:1400 H:0200 F:0F00
264489: *Mar 1 09:45:36.262: T:0000 L:0002 D:0154
264490: *Mar 1 09:45:36.262: RSTP(340): sending BPDU out Fa1/0/46
264491: *Mar 1 09:45:36.262: STP SW: TX: 0100.0ccc.cccd<-001e.7ab0.83b2 type/len 0032
264492: *Mar 1 09:45:36.262: encap SNAP linktype sstp vlan 340 len 64 on v340 Fa1/0/46
264493: *Mar 1 09:45:36.262: AA AA 03 00000C 010B SSTP
264494: *Mar 1 09:45:36.262: CFG P:0000 V:02 T:02 F:3C R:7154 001e.7ab0.8380 00000000
264495: *Mar 1 09:45:36.262: B:7154 001e.7ab0.8380 80.32 A:0000 M:1400 H:0200 F:0F00
264496: *Mar 1 09:45:36.262: T:0000 L:0002 D:0154
264497: *Mar 1 09:45:36.262: RSTP(360): sending BPDU out Fa1/0/1
4 6001001E7A9B7480 7052 0200 1400 0200 0F00
264595: *Mar 1 09:45:38.628: RSTP(1): Gi1/0/4 repeated msg
264596: *Mar 1 09:45:38.628: RSTP(1): Gi1/0/4 rcvd info remaining 6
264597: *Mar 1 09:45:38.645: RSTP(1): sending BPDU out Fa1/0/1
264598: *Mar 1 09:45:38.645: STP SW: TX: sstp copy: 0100.0ccc.cccd<-001e.7ab0.8383 type/len
264599: *Mar 1 09:45:38.645: encap SNAP linktype sstp vlan 1 len 64 on v1 Fa1/0/1
264600: *Mar 1 09:45:38.645: AA AA 03 00000C 010B SSTP
A 03 00000C 010B SSTP
265023: *Mar 1 09:45:38.712: CFG P:0000 V:02 T:02 F:3C R:7154 001e.7ab0.8380 00000000
265024: *Mar 1 09:45:38.712: B:7154 001e.7ab0.8380 80.32 A:0000 M:1400 H:0200 F:0F00
265025: *Mar 1 09:45:38.712: T:0000 L:0002 D:0154
265026: *Mar 1 09:45:38.712: RSTP(360): sending BPDU out Fa1/0/1
265027: *Mar 1 09:45:38.712: STP SW: TX: 0100.0ccc.cccd<-001e.7ab0.8383 type/len 0032
265028: *Mar 1 09:45:38.712: encap SNAP linktype sstp vlan 360 len 64 on v360 Fa1/0/1
265029: *Mar 1 09:45:38.712: AA AA 03 00000C 010B SSTP
8.201: encap SNAP linktype sstp vlan 360 len 64 on v360 Gi1/0/3
269243: *Mar 1 09:45:58.201: AA AA 03 00000C 010B SSTP
269244: *Mar 1 09:45:58.201: CFG P:0000 V:02 T:02 F:3C R:7168 001e.7ab0.8380 00000000
269245: *Mar 1 09:45:58.201: B:7168 001e.7ab0.8380 70.1B A:0000 M:1400 H:0200 F:0F00
269246: *Mar 1 09:45:58.201: T:0000 L:0002 D:0168
269247: *Mar 1 09:45:58.201: RSTP(360): sending BPDU out Gi1/0/4
269248: *Mar 1 09:45:58.201: STP SW: TX: 0100.0ccc.cccd<-001e.7ab0.839c type/len 0032
269249: *Mar 1 09:45:58.201: encap SNAP linktype sstp vlan 360 len 64 on v360 Gi1/0/4
269250: *Mar 1 09:45:58.201: AA AA 03 00000C 010B SSTP
269251: *Mar 1 09:45:58.201: CFG P:0000 V:02 T:02 F:3C R:7168 001e.7ab0.8380 00000000
269252: *Mar 1 09:45:58.201: B:7168 001e.7ab0.8380 70.1C A:0000 M:1400 H:0200 F:0F00
269253: *Mar 1 09:45:58.201: T:0000 L:0002 D:0168
269254: *Mar 1 09:45:58.201: RSTP(360): sending BPDU out Fa1/0/46
269255: *Mar 1 09:45:58.201: STP SW: TX: 0100.0ccc.cccd<-001e.7ab0.83b2 type/len 0032
269256: *Mar 1 09:45:58.201: encap SNAP linktype sstp vlan 360 len 64 on v360 Fa1/0/46
269257: *Mar 1 09:45:58.201: AA AA 03 00000C 010B SSTP
269258: *Mar 1 09:45:58.201: CFG P:0000 V:02 T:02 F:3C R:7168 001e.7ab0.8380 00000000
269259: *Mar 1 09:45:58.201: B:7168 001e.7ab0.8380 80.32 A:0000 M:1400 H:0200 F:0F00
269260: *Mar 1 09:45:58.201: T:0000 L:0002 D:0168
269261: *Mar 1 09:45:58.562: STP SW: RX ISR: 0100.0ccc.cccd<-001e.7ab0.9d1c type/len 0032
269262: *Mar 1 09:45:58.562: encap SNAP linktype sstp vlan 1 len 64 on v1 Gi1/0/4
00000004
B:6001 001e.7a9b.7480 70.52 A:0200 M:1400 H:0200 F:0F00
02 F:3C R:7154 001e.7ab0.8380 00000000
270775: *Mar 1 09:46:04.485: B:7154 001e.7ab0.8380 70.1C A:0000 M:1400 H:0200 F:0F00
270776: *Mar 1 09:46:04.485: T:0000 L:0002 D:0154
270777: *Mar 1 09:46:04.485: RSTP(340): sending BPDU out Fa1/0/46
270778: *Mar 1 09:46:04.485: STP SW: TX: 0100.0ccc.cccd<-001e.7ab0.83b2 type/len 0032
270779: *Mar 1 09:46:04.485: encap SNAP linktype sstp vlan 340 len 64 on v340 Fa1/0/46
270780: *Mar 1 09:46:04.485: AA AA 03 00000C 0
- Labels:
-
LAN Switching
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
07-20-2017 10:37 AM
Hi
In order to select the root bridge a I recommend to use priorities,
Root Switch
spanning-tree vlan A,B,C,D,E... priority 4096 (the lowest value is 0)
Backup Root Switch
spanning-tree vlan A,B,C,D,E... priority 8192
* The lowest priority value will be selected as prefered, now each new VLAN must be added to the previous command lines.
It will resolve any problem with STP, also I recommend to use, spanning-tree guard root command line under the trunk interfaces facing to the access switches only (on the root and backup root switch)
Hope it is useful
:-)
>> Marcar como útil o contestado, si la respuesta resolvió la duda, esto ayuda a futuras consultas de otros miembros de la comunidad. <<
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
07-20-2017 11:48 AM
NB: You can target all your VLANs with a statement like:
spanning-tree vlan 1-1004 priority #
Also BTW, some devices offer a symbolic for setting priority, but as it sometimes varies between platforms, suggest you use a numeric.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
07-20-2017 07:50 PM
Thank you for the response. I've tried lowering the root cost for all of the vlans on the root bridge but it doesn't work. For VLAN1, the election process works fine. But for all of the other VLANS they just elect themselves-- even though the root priorities are all set the same for all VLANS including VLAN1.
I think this is more of an issue with the BPDU's. When I look at each the trunk ports for the VLAN they all show sending but not receiving BPDU's. All VLANS are allowed on all trunks and VTP propagates just fine.
I feel like I'm overlooking something.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
07-21-2017 05:37 AM
is the core switch the vtp server as well?
How many switches do you have, could you please provide the configs? also please include a show vtp status of each switch.
>> Marcar como útil o contestado, si la respuesta resolvió la duda, esto ayuda a futuras consultas de otros miembros de la comunidad. <<
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
07-21-2017 09:41 AM
----------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------
S-SW1#show vtp status
VTP Version capable : 1 to 3
VTP version running : 2
VTP Domain Name : CISCO
VTP Pruning Mode : Enabled
VTP Traps Generation : Disabled
Device ID : xxxx.xxxx.xxxx
Configuration last modified by S-SW1 at 3-1-93 20:28:33
Local updater ID is S-SW1 on interface Vl1 (lowest numbered VLAN interface found)
--------------
VTP Operating Mode : Server
Maximum VLANs supported locally : 1005
Number of existing VLANs : 19
Configuration Revision : 49
MD5 digest : 0x9A 0xF1 0xD3 0x7C 0xDF 0x67 0x98 0xC2
0x51 0xA5 0x17 0xA1 0xF4 0x4F 0xA6 0xEE
S-SW1#show run
Building configuration...
!
version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
service sequence-numbers
!
hostname S-SW1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
clock timezone UTC -6
clock summer-time UTC recurring
switch 1 provision ws-c3750-48p
switch 2 provision ws-c3750-48p
system mtu routing 1500
no ip domain-lookup
!
!
!
spanning-tree mode rapid-pvst
spanning-tree extend system-id
spanning-tree vlan 1,201,210,220,230,240,260,285,290,299,310,330 priority 4096
spanning-tree vlan 340,360,400 priority 4096
spanning-tree vlan 200,250,270 priority 24576
!
vlan internal allocation policy ascending
!
!
!interface FastEthernet1/0/1
spanning-tree portfast trunk
!
interface FastEthernet1/0/2
spanning-tree portfast trunk
!
interface FastEthernet1/0/3
spanning-tree portfast trunk
!
interface FastEthernet1/0/4
spanning-tree portfast trunk
!
interface FastEthernet1/0/5
spanning-tree portfast trunk
!
interface FastEthernet1/0/6
spanning-tree portfast trunk
!
interface FastEthernet1/0/7
spanning-tree portfast trunk
!
interface FastEthernet1/0/8
spanning-tree portfast trunk
!
interface FastEthernet1/0/9
spanning-tree portfast trunk
!
interface FastEthernet1/0/10
spanning-tree portfast trunk
!
interface FastEthernet1/0/11
spanning-tree portfast trunk
!
interface FastEthernet1/0/12
spanning-tree portfast trunk
!
interface FastEthernet1/0/13
spanning-tree portfast trunk
!
interface FastEthernet1/0/14
spanning-tree portfast trunk
!
interface FastEthernet1/0/15
spanning-tree portfast trunk
!
interface FastEthernet1/0/16
spanning-tree portfast trunk
!
interface FastEthernet1/0/17
spanning-tree portfast trunk
!
interface FastEthernet1/0/18
switchport voice vlan 230
spanning-tree portfast
!
interface FastEthernet1/0/19
spanning-tree portfast trunk
!
interface FastEthernet1/0/20
spanning-tree portfast trunk
!
interface FastEthernet1/0/21
spanning-tree portfast trunk
!
interface FastEthernet1/0/22
spanning-tree portfast trunk
!
interface FastEthernet1/0/23
spanning-tree portfast trunk
!
interface FastEthernet1/0/24
spanning-tree portfast trunk
!
interface FastEthernet1/0/25
spanning-tree portfast trunk
!
interface FastEthernet1/0/26
spanning-tree portfast trunk
!
interface FastEthernet1/0/27
spanning-tree portfast trunk
!
interface FastEthernet1/0/28
spanning-tree portfast trunk
!
interface FastEthernet1/0/29
spanning-tree portfast trunk
!
interface FastEthernet1/0/30
spanning-tree portfast trunk
!
interface FastEthernet1/0/31
spanning-tree portfast trunk
!
interface FastEthernet1/0/32
spanning-tree portfast trunk
!
interface FastEthernet1/0/33
spanning-tree portfast trunk
!
interface FastEthernet1/0/34
spanning-tree portfast trunk
!
interface FastEthernet1/0/35
spanning-tree portfast trunk
!
interface FastEthernet1/0/36
spanning-tree portfast trunk
!
interface FastEthernet1/0/37
spanning-tree portfast trunk
!
interface FastEthernet1/0/38
spanning-tree portfast trunk
!
interface FastEthernet1/0/39
spanning-tree portfast trunk
!
interface FastEthernet1/0/40
spanning-tree portfast trunk
!
interface FastEthernet1/0/41
spanning-tree portfast trunk
!
interface FastEthernet1/0/42
spanning-tree portfast trunk
!
interface FastEthernet1/0/43
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree portfast trunk
!
interface FastEthernet1/0/44
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree portfast trunk
!
interface FastEthernet1/0/45
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree portfast trunk
!
interface FastEthernet1/0/46
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree portfast trunk
!
interface FastEthernet1/0/47
spanning-tree portfast trunk
!
interface FastEthernet1/0/48
switchport access vlan 2
spanning-tree portfast trunk
!
interface GigabitEthernet1/0/1
spanning-tree portfast trunk
!
interface GigabitEthernet1/0/2
spanning-tree portfast trunk
!
interface GigabitEthernet1/0/3
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree vlan 1 cost 4
!
interface GigabitEthernet1/0/4
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree vlan 1,201,210,220,230,240,260,285,290,299,310 port-priority 112
spanning-tree vlan 330,340 port-priority 112
spanning-tree vlan 1 cost 4
!
interface FastEthernet2/0/1
spanning-tree portfast trunk
!
interface FastEthernet2/0/2
spanning-tree portfast trunk
!
interface FastEthernet2/0/3
spanning-tree portfast trunk
!
interface FastEthernet2/0/4
spanning-tree portfast trunk
!
interface FastEthernet2/0/5
spanning-tree portfast trunk
!
interface FastEthernet2/0/6
spanning-tree portfast trunk
!
interface FastEthernet2/0/7
spanning-tree portfast trunk
!
interface FastEthernet2/0/8
spanning-tree portfast trunk
!
interface FastEthernet2/0/9
spanning-tree portfast trunk
!
interface FastEthernet2/0/10
spanning-tree portfast trunk
!
interface FastEthernet2/0/11
spanning-tree portfast trunk
!
interface FastEthernet2/0/12
spanning-tree portfast trunk
!
interface FastEthernet2/0/13
spanning-tree portfast trunk
!
interface FastEthernet2/0/14
spanning-tree portfast trunk
!
interface FastEthernet2/0/15
spanning-tree portfast trunk
!
interface FastEthernet2/0/16
spanning-tree portfast trunk
!
interface FastEthernet2/0/17
spanning-tree portfast trunk
!
interface FastEthernet2/0/18
spanning-tree portfast trunk
!
interface FastEthernet2/0/19
spanning-tree portfast trunk
!
interface FastEthernet2/0/20
spanning-tree portfast trunk
!
interface FastEthernet2/0/21
spanning-tree portfast trunk
!
interface FastEthernet2/0/22
spanning-tree portfast trunk
!
interface FastEthernet2/0/23
spanning-tree portfast trunk
!
interface FastEthernet2/0/24
spanning-tree portfast trunk
!
interface FastEthernet2/0/25
spanning-tree portfast trunk
!
interface FastEthernet2/0/26
spanning-tree portfast trunk
!
interface FastEthernet2/0/27
spanning-tree portfast trunk
!
interface FastEthernet2/0/28
spanning-tree portfast trunk
!
interface FastEthernet2/0/29
spanning-tree portfast trunk
!
interface FastEthernet2/0/30
spanning-tree portfast trunk
!
interface FastEthernet2/0/31
spanning-tree portfast trunk
!
interface FastEthernet2/0/32
spanning-tree portfast trunk
!
interface FastEthernet2/0/33
spanning-tree portfast trunk
!
interface FastEthernet2/0/34
spanning-tree portfast trunk
!
interface FastEthernet2/0/35
spanning-tree portfast trunk
!
interface FastEthernet2/0/36
spanning-tree portfast trunk
!
interface FastEthernet2/0/37
spanning-tree portfast trunk
!
interface FastEthernet2/0/38
spanning-tree portfast trunk
!
interface FastEthernet2/0/39
spanning-tree portfast trunk
!
interface FastEthernet2/0/40
spanning-tree portfast trunk
!
interface FastEthernet2/0/41
spanning-tree portfast trunk
!
interface FastEthernet2/0/42
spanning-tree portfast trunk
!
interface FastEthernet2/0/43
spanning-tree portfast trunk
!
interface FastEthernet2/0/44
spanning-tree portfast trunk
!
interface FastEthernet2/0/45
spanning-tree portfast trunk
!
interface FastEthernet2/0/46
spanning-tree portfast trunk
!
interface FastEthernet2/0/47
spanning-tree portfast trunk
!
interface FastEthernet2/0/48
spanning-tree portfast trunk
!
interface GigabitEthernet2/0/1
spanning-tree portfast trunk
!
interface GigabitEthernet2/0/2
spanning-tree portfast trunk
spanning-tree vlan 1 cost 4
!
interface GigabitEthernet2/0/3
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface GigabitEthernet2/0/4
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree vlan 1,201,210,220,230,240,260,285,290,299,310 port-priority 112
spanning-tree vlan 330,340 port-priority 112
spanning-tree vlan 1 cost 4
!
interface Vlan1
no ip route-cache
no ip mroute-cache
!
interface Vlan210
no ip address
no ip route-cache
no ip mroute-cache
!
interface Vlan220
no ip address
no ip route-cache
no ip mroute-cache
!
interface Vlan230
no ip address
no ip route-cache
no ip mroute-cache
!
interface Vlan285
no ip address
no ip route-cache
no ip mroute-cache
!
interface Vlan290
no ip address
no ip route-cache
no ip mroute-cache
!
interface Vlan299
!
ip classless
ip http server
ip http authentication local
ip http secure-server
!
!
ntp clock-period 36031988
mac address-table aging-time 600
end
----------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------
VTP Version capable : 1 to 3
VTP version running : 2
VTP Domain Name : CISCO
VTP Pruning Mode : Enabled
VTP Traps Generation : Disabled
Device ID : xxxx.xxxx.xxxx
Configuration last modified by S-SW1 at 3-1-93 20:28:33
--------------
VTP Operating Mode : Client
Maximum VLANs supported locally : 1005
Number of existing VLANs : 19
Configuration Revision : 49
MD5 digest : 0x9A 0xF1 0xD3 0x7C 0xDF 0x67 0x98 0xC2
0x51 0xA5 0x17 0xA1 0xF4 0x4F 0xA6 0xEE
Building configuration...
!
version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
service sequence-numbers
!
hostname H-SW1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
clock timezone UTC -6
clock summer-time UTC recurring
switch 1 provision ws-c3750-48p
switch 2 provision ws-c3750-48p
system mtu routing 1500
no ip domain-lookup
!
!
!
!
errdisable recovery cause udld
errdisable recovery cause bpduguard
errdisable recovery cause security-violation
errdisable recovery cause channel-misconfig (STP)
errdisable recovery cause pagp-flap
errdisable recovery cause dtp-flap
errdisable recovery cause link-flap
errdisable recovery cause sfp-config-mismatch
errdisable recovery cause gbic-invalid
errdisable recovery cause l2ptguard
errdisable recovery cause psecure-violation
errdisable recovery cause port-mode-failure
errdisable recovery cause dhcp-rate-limit
errdisable recovery cause pppoe-ia-rate-limit
errdisable recovery cause mac-limit
errdisable recovery cause vmps
errdisable recovery cause storm-control
errdisable recovery cause inline-power
errdisable recovery cause arp-inspection
errdisable recovery cause loopback
errdisable recovery cause small-frame
errdisable recovery interval 30
!
spanning-tree mode rapid-pvst
spanning-tree extend system-id
spanning-tree vlan 1,201,210,220,230,240,260,285,290,299,310,330 priority 8192
spanning-tree vlan 340,360,400 priority 8192
!
vlan internal allocation policy ascending
!
!
interface FastEthernet1/0/1
spanning-tree portfast trunk
!
interface FastEthernet1/0/2
spanning-tree portfast trunk
!
interface FastEthernet1/0/3
spanning-tree portfast trunk
!
interface FastEthernet1/0/4
spanning-tree portfast trunk
!
interface FastEthernet1/0/5
spanning-tree portfast trunk
!
interface FastEthernet1/0/6
spanning-tree portfast trunk
!
interface FastEthernet1/0/7
spanning-tree portfast trunk
!
interface FastEthernet1/0/8
spanning-tree portfast trunk
!
interface FastEthernet1/0/9
spanning-tree portfast trunk
!
interface FastEthernet1/0/10
spanning-tree portfast trunk
!
interface FastEthernet1/0/11
spanning-tree portfast trunk
!
interface FastEthernet1/0/12
spanning-tree portfast trunk
!
interface FastEthernet1/0/13
spanning-tree portfast trunk
!
interface FastEthernet1/0/14
spanning-tree portfast trunk
!
interface FastEthernet1/0/15
spanning-tree portfast trunk
!
interface FastEthernet1/0/16
spanning-tree portfast trunk
!
interface FastEthernet1/0/17
spanning-tree portfast trunk
!
interface FastEthernet1/0/18
spanning-tree portfast trunk
!
interface FastEthernet1/0/19
spanning-tree portfast trunk
!
interface FastEthernet1/0/20
spanning-tree portfast trunk
!
interface FastEthernet1/0/21
spanning-tree portfast trunk
!
interface FastEthernet1/0/22
spanning-tree portfast trunk
!
interface FastEthernet1/0/23
spanning-tree portfast trunk
!
interface FastEthernet1/0/24
spanning-tree portfast trunk
!
interface FastEthernet1/0/25
spanning-tree portfast trunk
!
interface FastEthernet1/0/26
spanning-tree portfast trunk
!
interface FastEthernet1/0/27
spanning-tree portfast trunk
!
interface FastEthernet1/0/28
spanning-tree portfast trunk
!
interface FastEthernet1/0/29
spanning-tree portfast trunk
!
interface FastEthernet1/0/30
spanning-tree portfast trunk
!
interface FastEthernet1/0/31
spanning-tree portfast trunk
!
interface FastEthernet1/0/32
spanning-tree portfast trunk
!
interface FastEthernet1/0/33
spanning-tree portfast trunk
!
interface FastEthernet1/0/34
spanning-tree portfast trunk
!
interface FastEthernet1/0/35
spanning-tree portfast trunk
!
interface FastEthernet1/0/36
spanning-tree portfast trunk
!
interface FastEthernet1/0/37
spanning-tree portfast trunk
!
interface FastEthernet1/0/38
spanning-tree portfast trunk
!
interface FastEthernet1/0/39
spanning-tree portfast trunk
!
interface FastEthernet1/0/40
spanning-tree portfast trunk
!
interface FastEthernet1/0/41
!
interface FastEthernet1/0/42
spanning-tree portfast trunk
!
interface FastEthernet1/0/43
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree portfast trunk
!
interface FastEthernet1/0/44
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree portfast trunk
!
interface FastEthernet1/0/45
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree portfast trunk
!
interface FastEthernet1/0/46
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree portfast trunk
!
interface FastEthernet1/0/47
spanning-tree portfast trunk
!
interface FastEthernet1/0/48
switchport access vlan 3
switchport mode access
spanning-tree portfast trunk
!
interface GigabitEthernet1/0/1
spanning-tree portfast trunk
!
interface GigabitEthernet1/0/2
spanning-tree portfast trunk
!
interface GigabitEthernet1/0/3
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree vlan 1 cost 4
!
interface GigabitEthernet1/0/4
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree vlan 1,201,210,220,230,240,260,285,290,299,310 port-priority 112
spanning-tree vlan 330,340,360 port-priority 112
spanning-tree vlan 1 cost 4
!
interface FastEthernet2/0/1
spanning-tree portfast trunk
!
interface FastEthernet2/0/2
spanning-tree portfast trunk
!
interface FastEthernet2/0/3
spanning-tree portfast trunk
!
interface FastEthernet2/0/4
spanning-tree portfast trunk
!
interface FastEthernet2/0/5
spanning-tree portfast trunk
!
interface FastEthernet2/0/6
spanning-tree portfast trunk
!
interface FastEthernet2/0/7
spanning-tree portfast trunk
!
interface FastEthernet2/0/8
spanning-tree portfast trunk
!
interface FastEthernet2/0/9
spanning-tree portfast trunk
!
interface FastEthernet2/0/10
spanning-tree portfast trunk
!
interface FastEthernet2/0/11
spanning-tree portfast trunk
!
interface FastEthernet2/0/12
spanning-tree portfast trunk
!
interface FastEthernet2/0/13
spanning-tree portfast trunk
!
interface FastEthernet2/0/14
spanning-tree portfast trunk
!
interface FastEthernet2/0/15
spanning-tree portfast trunk
!
interface FastEthernet2/0/16
spanning-tree portfast trunk
!
interface FastEthernet2/0/17
spanning-tree portfast trunk
!
interface FastEthernet2/0/18
spanning-tree portfast trunk
!
interface FastEthernet2/0/19
spanning-tree portfast trunk
!
interface FastEthernet2/0/20
spanning-tree portfast trunk
!
interface FastEthernet2/0/21
spanning-tree portfast trunk
!
interface FastEthernet2/0/22
spanning-tree portfast trunk
!
interface FastEthernet2/0/23
spanning-tree portfast trunk
!
interface FastEthernet2/0/24
spanning-tree portfast trunk
!
interface FastEthernet2/0/25
spanning-tree portfast trunk
!
interface FastEthernet2/0/26
spanning-tree portfast trunk
!
interface FastEthernet2/0/27
spanning-tree portfast trunk
!
interface FastEthernet2/0/28
spanning-tree portfast trunk
!
interface FastEthernet2/0/29
spanning-tree portfast trunk
!
interface FastEthernet2/0/30
spanning-tree portfast trunk
!
interface FastEthernet2/0/31
spanning-tree portfast trunk
!
interface FastEthernet2/0/32
spanning-tree portfast trunk
!
interface FastEthernet2/0/33
spanning-tree portfast trunk
!
interface FastEthernet2/0/34
spanning-tree portfast trunk
!
interface FastEthernet2/0/35
spanning-tree portfast trunk
!
interface FastEthernet2/0/36
spanning-tree portfast trunk
!
interface FastEthernet2/0/37
spanning-tree portfast trunk
!
interface FastEthernet2/0/38
spanning-tree portfast trunk
!
interface FastEthernet2/0/39
spanning-tree portfast trunk
!
interface FastEthernet2/0/40
spanning-tree portfast trunk
!
interface FastEthernet2/0/41
spanning-tree portfast trunk
!
interface FastEthernet2/0/42
spanning-tree portfast trunk
!
interface FastEthernet2/0/43
spanning-tree portfast trunk
!
interface FastEthernet2/0/44
spanning-tree portfast trunk
!
interface FastEthernet2/0/45
spanning-tree portfast trunk
!
interface FastEthernet2/0/46
spanning-tree portfast trunk
!
interface FastEthernet2/0/47
spanning-tree portfast trunk
!
interface FastEthernet2/0/48
spanning-tree portfast trunk
!
interface GigabitEthernet2/0/1
spanning-tree portfast trunk
!
interface GigabitEthernet2/0/2
spanning-tree portfast trunk
!
interface GigabitEthernet2/0/3
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface GigabitEthernet2/0/4
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree vlan 1,201,210,220,230,240,260,285,290,299,310 port-priority 112
spanning-tree vlan 330,340,360 port-priority 112
spanning-tree vlan 1 cost 4
!
interface Vlan1
no ip route-cache
no ip mroute-cache
!
interface Vlan299
!
ip classless
ip http server
ip http authentication local
ip http secure-server
!
!
!
ntp clock-period 36029242
end
----------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------
SW1#show vtp status
VTP Version capable : 1 to 3
VTP version running : 2
VTP Domain Name : CISCO
VTP Pruning Mode : Enabled
VTP Traps Generation : Disabled
Device ID : xxxx.xxxx.xxxx
Configuration last modified by S-SW1 at 3-1-93 20:28:33
--------------
VTP Operating Mode : Client
Maximum VLANs supported locally : 1005
Number of existing VLANs : 19
Configuration Revision : 49
MD5 digest : 0x9A 0xF1 0xD3 0x7C 0xDF 0x67 0x98 0xC2
0x51 0xA5 0x17 0xA1 0xF4 0x4F 0xA6 0xEE
Building configuration...
!
version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
service sequence-numbers
!
hostname SW1
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
clock timezone UTC -6
clock summer-time UTC recurring
switch 1 provision ws-c3750-48p
system mtu routing 1500
no ip domain-lookup
!
!!
!
spanning-tree mode rapid-pvst
spanning-tree extend system-id
spanning-tree vlan 1,201,210,220,230,240,260,285,290,299,310,330 priority 12288
spanning-tree vlan 340,360,400 priority 12288
!
vlan internal allocation policy ascending
!
interface FastEthernet1/0/1
switchport access vlan 200
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree portfast trunk
!
interface FastEthernet1/0/2
spanning-tree portfast trunk
!
interface FastEthernet1/0/3
spanning-tree portfast trunk
!
interface FastEthernet1/0/4
spanning-tree portfast trunk
!
interface FastEthernet1/0/5
spanning-tree portfast trunk
!
interface FastEthernet1/0/6
spanning-tree portfast trunk
!
interface FastEthernet1/0/7
spanning-tree portfast trunk
!
interface FastEthernet1/0/8
spanning-tree portfast trunk
!
interface FastEthernet1/0/9
spanning-tree portfast trunk
!
interface FastEthernet1/0/10
spanning-tree portfast trunk
!
interface FastEthernet1/0/11
spanning-tree portfast trunk
!
interface FastEthernet1/0/12
spanning-tree portfast trunk
!
interface FastEthernet1/0/13
spanning-tree portfast trunk
!
interface FastEthernet1/0/14
spanning-tree portfast trunk
!
interface FastEthernet1/0/15
spanning-tree portfast trunk
!
interface FastEthernet1/0/16
spanning-tree portfast trunk
!
interface FastEthernet1/0/17
switchport access vlan 230
switchport trunk encapsulation dot1q
switchport voice vlan 230
spanning-tree portfast
!
interface FastEthernet1/0/18
switchport voice vlan 230
spanning-tree portfast
!
interface FastEthernet1/0/19
switchport voice vlan 230
spanning-tree portfast
!
interface FastEthernet1/0/20
switchport voice vlan 230
spanning-tree portfast
!
interface FastEthernet1/0/21
spanning-tree portfast trunk
!
interface FastEthernet1/0/22
spanning-tree portfast trunk
!
interface FastEthernet1/0/23
spanning-tree portfast trunk
!
interface FastEthernet1/0/24
spanning-tree portfast trunk
!
interface FastEthernet1/0/25
spanning-tree portfast trunk
!
interface FastEthernet1/0/26
spanning-tree portfast trunk
!
interface FastEthernet1/0/27
spanning-tree portfast trunk
!
interface FastEthernet1/0/28
spanning-tree portfast trunk
!
interface FastEthernet1/0/29
spanning-tree portfast trunk
!
interface FastEthernet1/0/30
spanning-tree portfast trunk
!
interface FastEthernet1/0/31
switchport voice vlan 230
spanning-tree portfast
!
interface FastEthernet1/0/32
spanning-tree portfast trunk
!
interface FastEthernet1/0/33
spanning-tree portfast trunk
!
interface FastEthernet1/0/34
spanning-tree portfast trunk
!
interface FastEthernet1/0/35
spanning-tree portfast trunk
!
interface FastEthernet1/0/36
spanning-tree portfast trunk
!
interface FastEthernet1/0/37
spanning-tree portfast trunk
!
interface FastEthernet1/0/38
spanning-tree portfast trunk
!
interface FastEthernet1/0/39
spanning-tree portfast trunk
!
interface FastEthernet1/0/40
spanning-tree portfast trunk
!
interface FastEthernet1/0/41
spanning-tree portfast trunk
!
interface FastEthernet1/0/42
spanning-tree portfast trunk
!
interface FastEthernet1/0/43
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree portfast trunk
!
interface FastEthernet1/0/44
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree portfast trunk
!
interface FastEthernet1/0/45
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree portfast trunk
!
interface FastEthernet1/0/46
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree portfast trunk
!
interface FastEthernet1/0/47
spanning-tree portfast trunk
!
interface FastEthernet1/0/48
spanning-tree portfast trunk
!
interface GigabitEthernet1/0/1
spanning-tree portfast trunk
spanning-tree vlan 1 port-priority 192
!
interface GigabitEthernet1/0/2
spanning-tree portfast trunk
!
interface GigabitEthernet1/0/3
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree vlan 1,201,210,220,230,240,260,285,290,299,310 port-priority 112
spanning-tree vlan 330,340,360 port-priority 112
spanning-tree vlan 1 cost 4
!
interface GigabitEthernet1/0/4
switchport trunk encapsulation dot1q
switchport mode trunk
spanning-tree vlan 1,201,210,220,230,240,260,285,290,299,310 port-priority 112
spanning-tree vlan 330,340,360 port-priority 112
spanning-tree vlan 1 cost 4
!
interface Vlan1
!
interface Vlan299
!
ip classless
ip http server
ip http authentication local
ip http secure-server
!
!
end
----------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
07-21-2017 07:37 PM
You are in a big trouble trouble there. Redundant topology and only VLAN1 has blocking port.
To begin with something remove portfast from all trunk ports that are not connected to end devices. Configurations are full of inconsistencies. If ports on topology are properly marked:
!S-SW1
interface FastEthernet1/0/3
no spanning-tree portfast trunk
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet1/0/4
no spanning-tree portfast trunk
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet2/0/4
no spanning-tree portfast trunk
switchport trunk encapsulation dot1q
switchport mode trunk
H-SW1
interface FastEthernet1/0/3
no spanning-tree portfast trunk
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet1/0/4
no spanning-tree portfast trunk
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet2/0/4
no spanning-tree portfast trunk
switchport trunk encapsulation dot1q
switchport mode trunk
SW1
interface FastEthernet1/0/3
no spanning-tree portfast trunk
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet1/0/4
no spanning-tree portfast trunk
switchport trunk encapsulation dot1q
switchport mode trunk
Can you paste result from
sh interface trunk
from all switches?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
07-21-2017 07:37 PM
Thank you for the response. I'm attaching the requested information. The trunk ports with fastport enabled are for Access Points with Multiple Vlans. The Bridge Trunk Ports are the gigabit ports I've indicated below.
Fa1/0/43 on 802.1q trunking 1 (AP)
Fa1/0/44 on 802.1q trunking 1 (AP)
Fa1/0/46 on 802.1q trunking 1 (AP)
Gi1/0/3 on 802.1q trunking 1 (Router)
Gi1/0/4 on 802.1q trunking 1 (Bridge)
Gi2/0/4 on 802.1q trunking 1 (Bridge)
Fa1/0/43 1-4094
Fa1/0/44 1-4094
Fa1/0/46 1-4094
Gi1/0/3 1-4094
Gi1/0/4 1-4094
Gi2/0/4 1-4094
Fa1/0/43 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Fa1/0/44 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Fa1/0/46 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Gi1/0/3 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Gi1/0/4 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Gi2/0/4 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Fa1/0/43 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Fa1/0/44 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Fa1/0/46 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Gi1/0/3 1,220,230,260,285,299
Gi1/0/4 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Gi2/0/4 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Fa1/0/43 on 802.1q trunking 1 (AP)
Fa1/0/44 on 802.1q trunking 1 (AP)
Fa1/0/46 on 802.1q trunking 1 (AP)
Gi1/0/3 on 802.1q trunking 1 (Router)
Gi1/0/4 on 802.1q trunking 1 (Bridge)
Gi2/0/4 on 802.1q trunking 1 (Bridge)
Fa1/0/43 1-4094
Fa1/0/44 1-4094
Fa1/0/46 1-4094
Gi1/0/3 1-4094
Gi1/0/4 1-4094
Gi2/0/4 1-4094
Fa1/0/43 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Fa1/0/44 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Fa1/0/46 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Gi1/0/3 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Gi1/0/4 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Gi2/0/4 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Fa1/0/43 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Fa1/0/44 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Fa1/0/46 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Gi1/0/3 1,220,285,330,340,360
Gi1/0/4 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Gi2/0/4 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
H-SW1#
Fa1/0/1 on 802.1q trunking 1 (Management Terminal)
Fa1/0/46 on 802.1q trunking 1 (AP)
Gi1/0/3 on 802.1q trunking 1 (Bridge)
Fa1/0/1 1-4094
Fa1/0/46 1-4094
Gi1/0/3 1-4094
Gi1/0/4 1-4094
Fa1/0/1 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Fa1/0/46 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Gi1/0/3 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Gi1/0/4 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Fa1/0/1 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Fa1/0/46 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Gi1/0/3 1,201,210,220,230,240,260,285,290,299,310,330,340,360,400
Gi1/0/4 201,210,220,230,240,260,285,290,299,310,330,340,360,400
SW1#
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
07-21-2017 10:40 PM
The only explanations that only VLAN1 is finding loop free topology that I can think of:
- BPDUs are filtered (not present in configurations)
- There are devices between switches that are configured only with VLAN1 (or filtering BPDUs)
Currently, according to output from STP and the fact that the same VLANs are allowed on trunks between switches and only VLAN1 has blocking port you have network loops in all VLANs except VLAN1. In that case you should at least shut down one interface to break loop and enable that port only when you are troubleshooting issue until issue is resolved. Or you can manually prune VLANs except VLAN1 on one interface (VLAN1 is blocking port on one of switches so there is no network loop there). One of ports Gi1/0/3 or Gi1/0/4 on SW1 looks like good candidate to be shutdown.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
07-22-2017 05:24 PM
Thanks for the response. I'm going to do that for now. I'm not sure if this would have anything to do with it, but the routers having 4 port gb switching modules installed which attached to the main network. They all find the correct root bridge, so I'm curious if there's a protocol misconfiguration on the switches. The switchports on the routers all show they're using ieee stp protocol while the switches show they're using rstp protocol. Should I just disable STP on the routers all together?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
07-23-2017 10:04 AM
I did some further troubleshooting.
I'm not receiving BPDU's for any VLANS other than 1.
I am receiving multicast packets without errors.
I changed the trunks to ISL encapsulation and STP works perfectly fine with bpdus being received but all my other access point trunks and router trunks are all still dot1q.
Below is some of the troubleshooting I did for dot1q trunks. For now, I'll just leave them as ISL trunks though I prefer dot1q.
SW1#show spanning-tree interface g1/0/4 detail
Port 28 (GigabitEthernet1/0/4) of VLAN0001 is alternate blocking
Port path cost 4, Port priority 112, Port Identifier 112.28.
Designated root has priority 4097, address 001e.7a7e.0200
Designated bridge has priority 8193, address 001e.7a9b.7480
Designated port id is 112.82, designated path cost 4
Timers: message age 16, forward delay 0, hold 0
Number of transitions to forwarding state: 6
Link type is point-to-point by default
BPDU: sent 131, received 1402
Port path cost 4, Port priority 112, Port Identifier 112.28.
Designated root has priority 32969, address 001e.7ab0.8380
Designated bridge has priority 32969, address 001e.7ab0.8380
Designated port id is 112.28, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
Link type is point-to-point by default
BPDU: sent 1481, received 0
SW1#show interface g1/0/4 counters
Gi1/0/4 13331767 5079 61695 66136
Gi1/0/4 35208651 5772 269852 93282
Gi1/0/4 13337536 5079 61720 66159
Gi1/0/4 35215909 5772 269924 93287
Gi1/0/4 0 0 0 0 0 0
Gi1/0/4 0 0 0 0 0 0
------------------TX STATS------------------
transmission rate/sec = 32
paks transmitted = 1234855
paks transmitted (opt) = 45
opt chunk alloc failures = 255892
max opt chunk allocated = 6
------------------RX STATS------------------
receive rate/sec = 1
paks received at stp isr = 76246
paks queued at stp isr = 76246
paks dropped at stp isr = 0
drop rate/sec = 0
paks dequeued at stp proc = 76246
paks waiting in queue = 0
queue depth = 5(max) 12288(total)
--------------PROCESSING STATS---------------
queue wait time (in ms) = 1(avg) 227(max)
processing time (in ms) = 0(avg) 9(max)
proc switch count = 100
add vlan ports = 26
time since last clearing = 38406 sec
Spanning Tree Bridge configuration
SW1#test spanning-tree get configuration mst
% Incomplete command.
<0-4094> MST instance id
no Spanning Tree Bridge config present for mst 1
SW1#test spanning-tree get configuration mst 0
no Spanning Tree Bridge config present for mst 0
S
SW1#test spanning-tree switch-count ?
<20-10000> STP pak switch count
default default STP pak switch count
SW1#
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
07-24-2017 07:48 AM
Just wanted to give an update. The issue actually was with the Ubiquiti wireless bridges we were using. They are supposed to be completely transparent but I guess that SSTP's were being dropped with the current firmware. They had a newer release candidate firmware that fixed it.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide
