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STP Path Cost Standards - HP 1810-8G vs HP 1920-24G

 
johndotcom
Occasional Contributor

STP Path Cost Standards - HP 1810-8G vs HP 1920-24G

I have a home network that uses the HP 1920-24G as the primary switch and an HP 1810-8G as downstream switches in media room. 

There are four Sonos compnents hardwired to the 1920 and one Sonos Connect that I generally attach to the switch where the 1810 is located.  The 1810 is replacing an unmanaged switch.

In order to install the Sonos Connect to the 1810, I have to enable STP.  The STP (RSTP) was enabled by default on the 1920.

My question is in regards to the Path Cost standards on the two switches.  The 1920 has a selection available for the Path Cost Standard and defaulted to using a "Legacy" standard (other choices are 802.1D-1998 and 802.1T) - I am only familar with the 1D and 1T(1W). 

The 1810 does not have a Path Cost Standard selection available, only a Protocol Version (1D or 1W).  Regardless of the Protocol Version selected, the switch uses the 1W(1T) cost standard, applying 20,000 to 1GB ports and 200K to 100Mb ports. 

Both switches are currently configured to RSTP, consistent with what I have read as best practice.

What is the best way to configure the two switches' Port Cost Standards to have a consistent STP?

2 REPLIES
johndotcom
Occasional Contributor

Re: STP Path Cost Standards - HP 1810-8G vs HP 1920-24G

Here's the current configuration on the switches:

1810-8G

Spanning Tree Bridge Configuration
Spanning Tree Enabled Protocol Version RSTP (802.1w) Max Age 20 Hello Time 2 Forward Delay 15 Bridge Priority 32768 BPDU Guard Disabled BPDU Filter Disabled
Spanning Tree Interface Status
Root Bridge Identifier 80:00:40:B9:3C:8F:92:9F Root Guarded Interfaces   TCN Guarded Interfaces   BPDU Flood Enabled Interfaces 1-8, TRK1-TRK4 BPDU Filtered Interfaces  
Spanning Tree Configuration
Interface Port Role Port Forwarding State Port Priority Port Path Cost Auto Edge 1 Root Forwarding 0x0080 20000 Enabled 2 Designated Forwarding 0x0080 200000 Enabled 3 Designated Forwarding 0x0080 20000 Enabled 4 Disabled Disabled 0x0080 0 Enabled 5 Designated Forwarding 0x0080 200000 Enabled 6 Disabled Disabled 0x0080 0 Enabled 7 Disabled Disabled 0x0080 0 Enabled 8 Disabled Disabled 0x0080 0 Enabled TRK1 Disabled Disabled 0x0040 0 Enabled TRK2 Disabled Disabled 0x0040 0 Enabled TRK3 Disabled Disabled 0x0040 0 Enabled TRK4 Disabled Disabled 0x0040 0 Enabled

 

1920-24G

===============================================
  ===============display stp===============
===============================================
-------[CIST Global Info][Mode RSTP]-------
CIST Bridge         :32768.40b9-3c8f-929f
Bridge Times        :Hello 2s MaxAge 20s FwDly 15s MaxHop 20
CIST Root/ERPC      :32768.40b9-3c8f-929f / 0
CIST RegRoot/IRPC   :32768.40b9-3c8f-929f / 0
CIST RootPortId     :0.0
BPDU-Protection     :disabled
Bridge Config-
Digest-Snooping     :disabled
TC or TCN received  :251
Time since last TC  :0 days 23h:19m:45s

----[Port29(Bridge-Aggregation1)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=14
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.29
 Port Edged          :Config=disabled / Active=disabled
 Point-to-point      :Config=auto / Active=true
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :false
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :205549
          TCN: 0, Config: 0, RST: 205549, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port1(GigabitEthernet1/0/1)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=20
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.1
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=true
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :true
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :544123
          TCN: 0, Config: 0, RST: 544123, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port2(GigabitEthernet1/0/2)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.2
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=true
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :true
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :427827
          TCN: 0, Config: 0, RST: 427827, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port3(GigabitEthernet1/0/3)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.3
 Port Edged          :Config=enabled / Active=disabled
 Point-to-point      :Config=auto / Active=true
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :true
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :121149
          TCN: 0, Config: 121140, RST: 9, MST: 0
 BPDU Received       :17
          TCN: 16, Config: 1, RST: 0, MST: 0

----[Port4(GigabitEthernet1/0/4)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.4
 Port Edged          :Config=enabled / Active=disabled
 Point-to-point      :Config=auto / Active=true
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :true
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :121151
          TCN: 0, Config: 121148, RST: 3, MST: 0
 BPDU Received       :38
          TCN: 37, Config: 1, RST: 0, MST: 0

----[Port5(GigabitEthernet1/0/5)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.5
 Port Edged          :Config=enabled / Active=disabled
 Point-to-point      :Config=auto / Active=true
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :true
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :121154
          TCN: 0, Config: 121151, RST: 3, MST: 0
 BPDU Received       :30
          TCN: 29, Config: 1, RST: 0, MST: 0

----[Port6(GigabitEthernet1/0/6)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.6
 Port Edged          :Config=enabled / Active=disabled
 Point-to-point      :Config=auto / Active=true
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :true
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :121152
          TCN: 0, Config: 121149, RST: 3, MST: 0
 BPDU Received       :27
          TCN: 26, Config: 1, RST: 0, MST: 0

----[Port7(GigabitEthernet1/0/7)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=20
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.7
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=true
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :true
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :125134
          TCN: 0, Config: 0, RST: 125134, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port8(GigabitEthernet1/0/8)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=20
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.8
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=true
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :true
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :205469
          TCN: 0, Config: 0, RST: 205469, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port9(GigabitEthernet1/0/9)][DOWN]----
 Port Protocol       :enabled
 Port Role           :CIST Disabled Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200000
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.9
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=false
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :0
          TCN: 0, Config: 0, RST: 0, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port10(GigabitEthernet1/0/10)][DOWN]----
 Port Protocol       :enabled
 Port Role           :CIST Disabled Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200000
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.10
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=false
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :0
          TCN: 0, Config: 0, RST: 0, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

johndotcom
Occasional Contributor

Re: STP Path Cost Standards - HP 1810-8G vs HP 1920-24G

1920 - continued

----[Port11(GigabitEthernet1/0/11)][DOWN]----
 Port Protocol       :enabled
 Port Role           :CIST Disabled Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200000
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.11
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=false
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :0
          TCN: 0, Config: 0, RST: 0, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port12(GigabitEthernet1/0/12)][DOWN]----
 Port Protocol       :enabled
 Port Role           :CIST Disabled Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200000
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.12
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=false
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :true
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :117208
          TCN: 0, Config: 0, RST: 117208, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port13(GigabitEthernet1/0/13)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.13
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=true
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :true
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :545528
          TCN: 0, Config: 0, RST: 545528, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port14(GigabitEthernet1/0/14)][DOWN]----
 Port Protocol       :enabled
 Port Role           :CIST Disabled Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200000
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.14
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=false
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :0
          TCN: 0, Config: 0, RST: 0, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port15(GigabitEthernet1/0/15)][DOWN]----
 Port Protocol       :enabled
 Port Role           :CIST Disabled Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200000
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.15
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=false
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :0
          TCN: 0, Config: 0, RST: 0, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port16(GigabitEthernet1/0/16)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=20
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.16
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=true
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :true
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :544128
          TCN: 0, Config: 0, RST: 544128, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port17(GigabitEthernet1/0/17)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=2000
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.17
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=false
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :true
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :124892
          TCN: 0, Config: 0, RST: 124892, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port18(GigabitEthernet1/0/18)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.18
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=true
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :true
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :545528
          TCN: 0, Config: 0, RST: 545528, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port19(GigabitEthernet1/0/19)][DOWN]----
 Port Protocol       :enabled
 Port Role           :CIST Disabled Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200000
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.19
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=false
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :0
          TCN: 0, Config: 0, RST: 0, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port20(GigabitEthernet1/0/20)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=20
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.20
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=true
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :true
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :545528
          TCN: 0, Config: 0, RST: 545528, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port21(GigabitEthernet1/0/21)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.21
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=true
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :true
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :282590
          TCN: 0, Config: 0, RST: 282590, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port22(GigabitEthernet1/0/22)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=20
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.22
 Port Edged          :Config=enabled / Active=disabled
 Point-to-point      :Config=auto / Active=true
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Rapid transition    :true
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :122327
          TCN: 0, Config: 39599, RST: 82728, MST: 0
 BPDU Received(Err)  :19(192)
          TCN: 5, Config: 4, RST: 10, MST: 0

----[Port23(GigabitEthernet1/0/23)][DOWN]----
 Port Protocol       :enabled
 Port Role           :CIST Disabled Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200000
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.23
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=false
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :0
          TCN: 0, Config: 0, RST: 0, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port24(GigabitEthernet1/0/24)][DOWN]----
 Port Protocol       :enabled
 Port Role           :CIST Disabled Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200000
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.24
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=false
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :0
          TCN: 0, Config: 0, RST: 0, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port25(GigabitEthernet1/0/25)][DOWN]----
 Port Protocol       :enabled
 Port Role           :CIST Disabled Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200000
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.25
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=false
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :0
          TCN: 0, Config: 0, RST: 0, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port26(GigabitEthernet1/0/26)][DOWN]----
 Port Protocol       :enabled
 Port Role           :CIST Disabled Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200000
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.26
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=false
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :0
          TCN: 0, Config: 0, RST: 0, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port27(GigabitEthernet1/0/27)][DOWN]----
 Port Protocol       :enabled
 Port Role           :CIST Disabled Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200000
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.27
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=false
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :0
          TCN: 0, Config: 0, RST: 0, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

----[Port28(GigabitEthernet1/0/28)][DOWN]----
 Port Protocol       :enabled
 Port Role           :CIST Disabled Port
 Port Priority       :128
 Port Cost(Legacy)   :Config=auto / Active=200000
 Desg. Bridge/Port   :32768.40b9-3c8f-929f / 128.28
 Port Edged          :Config=enabled / Active=enabled
 Point-to-point      :Config=auto / Active=false
 Transmit Limit      :10 packets/hello-time
 Protection Type     :None
 MST BPDU Format     :Config=auto / Active=legacy
 Port Config-
 Digest-Snooping     :disabled
 Num of Vlans Mapped :1
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s MsgAge 0s RemHop 20
 BPDU Sent           :0
          TCN: 0, Config: 0, RST: 0, MST: 0
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0
==================================================
  ===============display stp tc===============
==================================================
 -------------- STP slot 1 TC or TCN count -------------
 MSTID      Port                       Receive      Send
   0        Bridge-Aggregation1           0          152
   0        GigabitEthernet1/0/1          0          0
   0        GigabitEthernet1/0/2          0          0
   0        GigabitEthernet1/0/3          16         386
   0        GigabitEthernet1/0/4          37         388
   0        GigabitEthernet1/0/5          29         386
   0        GigabitEthernet1/0/6          26         386
   0        GigabitEthernet1/0/7          0          0
   0        GigabitEthernet1/0/8          0          0
   0        GigabitEthernet1/0/13         0          0
   0        GigabitEthernet1/0/16         0          0
   0        GigabitEthernet1/0/17         0          0
   0        GigabitEthernet1/0/18         0          0
   0        GigabitEthernet1/0/20         0          0
   0        GigabitEthernet1/0/21         0          0
   0        GigabitEthernet1/0/22         9          358
=======================================================