Segunda prueba de compatibilidad
spanning-tree entre switches Huawei y Cisco
Fecha: 8 de noviembre del 2022
Escenario
Se realiza la segunda de las pruebas de compatibilidad STP entre dos switches, un Huawei 5720 y dos Catalyst 2960,
esta vez armamos el famoso “triangulito” que se enseña en CCNA para ver la interacción con más de un switch
en la topología spanning-tree.
1.- Verificación inicial:
1.1.- En el switch Huawei:
[HUAWEI]disp stp vlan 1
-------[VLAN 1 Global Info][Mode
VBST]-------
Bridge ID :32768.3ce8-247d-1410
Bridge Diameter :7
Config Times :Hello 2s MaxAge 20s FwDly 15s
Active Times :Hello 2s MaxAge 20s FwDly 15s
Root ID / RPC :32768.005f-86a7-2a00 / 4 (el switch Cisco2960-1)
RootPortId :128.4093
(GigabitEthernet0/0/1)
Root Type :Normal
BPDU-Protection :Disabled
STP Converge Mode :Normal
Time since last TC :0 days 0h:1m:55s
Number of TC :56
----[Port4093(GigabitEthernet0/0/1)][FORWARDING]----
Port
Role :Root Port
Port
Priority :128
Port Cost(Dot1D) :Config=Auto / Active=4 (a un salto de 4 (un segmento de 1Gbps) hasta el root Cisco2960-1)
Desg. Bridge/Port
:32768.005f-86a7-2a00 / 128.1
Port
Edged :Config=Default /
Active=Disabled
Point-to-point :Config=Auto / Active=True
Transit
Limit :6 packets/hello
Protection Type :None
Port STP
Mode :VBST
BPDU
Encapsulation :Config=VBST / Active=VBST
BPDU
Sent :0
TCN: 0, Config: 0, RST: 0
BPDU
Received :0
TCN: 0, Config: 0, RST: 0
----[Port4092(GigabitEthernet0/0/2)][DISCARDING]----
Port
Role :Alternate
Port
Port
Priority :128
Port
Cost(Dot1D) :Config=Auto / Active=4
Desg.
Bridge/Port :32768.005f-86a7-c080 /
128.1
Port
Edged :Config=Default /
Active=Disabled
Point-to-point :Config=Auto / Active=True
Transit
Limit :6 packets/hello
Protection Type :None
Port STP
Mode :VBST
BPDU
Encapsulation :Config=VBST / Active=VBST
BPDU
Sent :0
TCN: 0, Config: 0, RST: 0
BPDU
Received :0
TCN: 0, Config: 0, RST: 0
[HUAWEI]
[HUAWEI]disp
stp vlan 2
-------[VLAN 2 Global Info][Mode VBST]-------
Bridge ID :32768.3ce8-247d-1410
Bridge Diameter :7
Config Times :Hello 2s MaxAge 20s FwDly 15s
Active Times :Hello 2s MaxAge 20s FwDly 15s
Root ID / RPC :32768.005f-86a7-2a00 / 4 (a un salto de 4 (un segmento de 1Gbps) hasta el root Cisco2960-1)
RootPortId :128.4093 (GigabitEthernet0/0/1)
Root Type :Normal
BPDU-Protection
:Disabled
STP Converge Mode :Normal
Time since last TC :0 days 0h:1m:55s
Number of TC :42
----[Port4093(GigabitEthernet0/0/1)][FORWARDING]----
Port
Role :Root Port
Port
Priority :128
Port
Cost(Dot1D) :Config=Auto / Active=4
Desg.
Bridge/Port :32768.005f-86a7-2a00 /
128.1
Port
Edged :Config=Default /
Active=Disabled
Point-to-point :Config=Auto / Active=True
Transit
Limit :6 packets/hello
Protection Type :None
Port STP
Mode :VBST
BPDU
Encapsulation :Config=VBST / Active=VBST
BPDU
Sent :0
TCN: 0, Config: 0, RST: 0
BPDU
Received :0
TCN: 0, Config: 0, RST: 0
----[Port4092(GigabitEthernet0/0/2)][DISCARDING]----
Port
Role :Alternate Port
Port
Priority :128
Port
Cost(Dot1D) :Config=Auto / Active=4
Desg.
Bridge/Port :32768.005f-86a7-c080 /
128.1
Port
Edged :Config=Default /
Active=Disabled
Point-to-point :Config=Auto / Active=True
Transit
Limit :6 packets/hello
Protection Type :None
Port STP
Mode :VBST
BPDU
Encapsulation :Config=VBST / Active=VBST
BPDU
Sent :0
TCN: 0, Config: 0, RST: 0
BPDU
Received :0
TCN: 0, Config: 0, RST: 0
[HUAWEI]
[HUAWEI]disp
stp brief
VLAN-ID
Port
Role STP State Protection
1 GigabitEthernet0/0/1 ROOT
FORWARDING NONE
1 GigabitEthernet0/0/2 ALTE DISCARDING NONE
2 GigabitEthernet0/0/1 ROOT
FORWARDING NONE
2 GigabitEthernet0/0/2 ALTE DISCARDING NONE
[HUAWEI]
1.2.- En el switch Cisco2960-1:
Cisco2960-1#sh spanning-tree
VLAN0001
Spanning
tree enabled protocol rstp
Root
ID Priority 32769
Address 005f.86a7.2a00
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 005f.86a7.2a00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Gi1/0/1 Desg FWD 4 128.1 P2p
Gi1/0/2 Desg FWD 4 128.2 P2p Peer(STP)
VLAN0002
Spanning tree enabled protocol rstp
Root
ID Priority 32770
Address 005f.86a7.2a00
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge
ID Priority 32770
(priority 32768 sys-id-ext 2)
Address 005f.86a7.2a00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Gi1/0/1 Desg FWD 4 128.1 P2p
Gi1/0/2 Desg FWD 4 128.2 P2p Peer(STP)
Cisco2960-1#
1.3.- En el switch Cisco2960-2:
Cisco2960-2#sh spanning-tree
VLAN0001
Spanning tree enabled protocol ieee
Root
ID Priority 4097
Address 3ce8.247d.1410
Cost 4 (a un salto de 4 (un segmento de 1Gbps) hasta el root Cisco2960-1)
Port 1
(GigabitEthernet1/0/1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge
ID Priority 32769
(priority 32768 sys-id-ext 1)
Address 005f.86a7.c080
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Gi1/0/1 Desg FWD 4 128.1 P2p
Gi1/0/2 Root FWD 4 128.2 P2p
VLAN0002
Spanning tree enabled protocol ieee
Root
ID Priority 32770
Address 005f.86a7.2a00 (el switch Cisco2960-1)
Cost 4 (a un salto de 4 (un segmento de 1Gbps) hasta el root Cisco2960-1)
Port 2
(GigabitEthernet1/0/2)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge
ID Priority 32770
(priority 32768 sys-id-ext 2)
Address 005f.86a7.c080
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
Gi1/0/1 Desg FWD 4 128.1 P2p
Gi1/0/2 Root FWD 4 128.2 P2p
Cisco2960-2#
2.- Se cae el link entre Huawei y Cisco2960-1 (root STP):
2.1.- Se simula el corte de vínculo:
Cisco2960-1(config)#int gi1/0/1
Cisco2960-1(config-if)#shut (se simula el corte de vínculo)
Cisco2960-1(config-if)#
2.2.- Logs en switch
Cisco2960-2:
Cisco2960-2#
Nov 7 21:11:05.747: STP: VLAN0001 Topology
Change rcvd on Gi1/0/1
Nov 7 21:11:05.747: STP: VLAN0001 sent Topology
Change Notice on Gi1/0/2
Nov 7 21:11:06.869: STP: VLAN0002 Topology
Change rcvd on Gi1/0/1
Nov 7 21:11:06.869: STP: VLAN0002 sent Topology
Change Notice on Gi1/0/2
Cisco2960-2#
2.3.- Logs en switch
Huawei:
Nov
7 2022 21:11:04
HUAWEI %%01IFPDT/4/IF_STATE(l)[0]:Interface GigabitEthernet0/0/1 has turned
into DOWN state.
2.4.- Verificación
spanning-tree en switch Huawei:
[HUAWEI]disp
stp brief
VLAN-ID
Port
Role STP State Protection
1 GigabitEthernet0/0/2 ROOT
FORWARDING NONE
2 GigabitEthernet0/0/2 ROOT
FORWARDING NONE
[HUAWEI]
[HUAWEI]disp
stp vlan 1
-------[VLAN 1 Global Info][Mode VBST]-------
Bridge ID :32768.3ce8-247d-1410
Bridge Diameter :7
Config Times :Hello 2s MaxAge 20s FwDly 15s
Active Times :Hello 2s MaxAge 20s FwDly 15s
Root ID / RPC :32768.005f-86a7-2a00 / 8 (a dos saltos de 4 (segmentos de 1Gbps) hasta el root)
RootPortId :128.4092 (GigabitEthernet0/0/2)
Root Type :Normal
BPDU-Protection
:Disabled
STP Converge Mode :Normal
Time since last TC :0 days 0h:0m:24s
Number of TC :53
----[Port4093(GigabitEthernet0/0/1)][DOWN]----
Port
Role :Disabled Port
Port
Priority :128
Port
Cost(Dot1D) :Config=Auto / Active=65535
Desg.
Bridge/Port :32768.3ce8-247d-1410 / 128.4093
Port
Edged :Config=Default /
Active=Disabled
Point-to-point :Config=Auto / Active=False
Transit
Limit :6 packets/hello
Protection Type :None
Port STP
Mode :VBST
BPDU
Encapsulation :Config=VBST / Active=VBST
BPDU
Sent :0
TCN: 0, Config: 0, RST: 0
BPDU
Received :0
TCN: 0, Config: 0, RST: 0
----[Port4092(GigabitEthernet0/0/2)][FORWARDING]----
Port
Role :Root Port
Port
Priority :128
Port
Cost(Dot1D) :Config=Auto / Active=4
Desg.
Bridge/Port :32768.005f-86a7-c080 /
128.1
Port
Edged :Config=Default /
Active=Disabled
Point-to-point :Config=Auto / Active=True
Transit
Limit :6 packets/hello
Protection
Type :None
Port STP
Mode :VBST
BPDU
Encapsulation :Config=VBST / Active=VBST
BPDU
Sent :0
TCN: 0, Config: 0, RST: 0
BPDU
Received :0
TCN: 0, Config: 0, RST: 0
[HUAWEI]
[HUAWEI]disp
stp vlan 2
-------[VLAN 2 Global Info][Mode VBST]-------
Bridge ID :32768.3ce8-247d-1410
Bridge Diameter :7
Config Times :Hello 2s MaxAge 20s FwDly 15s
Active Times :Hello 2s MaxAge 20s FwDly 15s
Root ID / RPC :32768.005f-86a7-2a00 / 8 (a dos saltos de 4 (segmentos de 1Gbps) hasta el root)
RootPortId :128.4092 (GigabitEthernet0/0/2)
Root Type :Normal
BPDU-Protection
:Disabled
STP Converge Mode :Normal
Time since last TC :0 days 0h:5m:22s
Number of TC :48
----[Port4093(GigabitEthernet0/0/1)][DOWN]----
Port
Role :Disabled Port
Port
Priority :128
Port
Cost(Dot1D) :Config=4 / Active=4
Desg.
Bridge/Port :32768.3ce8-247d-1410 /
128.4093
Port
Edged :Config=Default /
Active=Disabled
Point-to-point :Config=Auto / Active=False
Transit
Limit :6 packets/hello
Protection Type :None
Port STP
Mode :VBST
BPDU
Encapsulation :Config=VBST / Active=VBST
BPDU
Sent :0
TCN: 0, Config: 0, RST: 0
BPDU
Received :0
TCN: 0, Config: 0, RST: 0
----[Port4092(GigabitEthernet0/0/2)][FORWARDING]----
Port
Role :Root Port
Port
Priority :128
Port
Cost(Dot1D) :Config=Auto / Active=4
Desg.
Bridge/Port :32768.005f-86a7-c080 /
128.1
Port
Edged :Config=Default /
Active=Disabled
Point-to-point :Config=Auto / Active=True
Transit
Limit :6 packets/hello
Protection Type :None
Port STP
Mode :VBST
BPDU
Encapsulation :Config=VBST / Active=VBST
BPDU
Sent :0
TCN: 0, Config: 0, RST: 0
BPDU
Received :0
TCN: 0, Config: 0, RST: 0
[HUAWEI]
3.- Se reestablece
vínculo:
3.1.- Se levanta el enlcace en el switch Cisco2960-1:
Cisco2960-1(config)#int gi1/0/1
Cisco2960-1(config-if)#no shut
Cisco2960-1(config-if)#
3.2.- Verificación en el switch Huawei:
Nov
7 2022 21:15:33
HUAWEI %%01IFPDT/4/IF_STATE(l)[13]:Interface GigabitEthernet0/0/2 has turned
into UP state.
[HUAWEI]disp
stp vlan 1
-------[VLAN 1 Global Info][Mode VBST]-------
Bridge ID :32768.3ce8-247d-1410
Bridge Diameter :7
Config Times :Hello 2s MaxAge 20s FwDly 15s
Active Times :Hello 2s MaxAge 20s FwDly 15s
Root ID / RPC :32768.005f-86a7-2a00 / 4
RootPortId :128.4093 (GigabitEthernet0/0/1)
Root Type :Normal
BPDU-Protection :Disabled
STP Converge Mode :Normal
Time since last TC :0 days 0h:18m:19s
Number of TC :65
----[Port4093(GigabitEthernet0/0/1)][FORWARDING]----
Port
Role :Root Port
Port
Priority :128
Port
Cost(Dot1D) :Config=Auto / Active=4
Desg.
Bridge/Port :32768.005f-86a7-2a00 / 128.1
Port
Edged :Config=Default /
Active=Disabled
Point-to-point :Config=Auto / Active=True
Transit
Limit :6 packets/hello
Protection Type :None
Port STP
Mode :VBST
BPDU
Encapsulation :Config=VBST / Active=VBST
BPDU
Sent :0
TCN: 0, Config: 0, RST: 0
BPDU
Received :0
TCN: 0, Config: 0, RST: 0
----[Port4092(GigabitEthernet0/0/2)][DISCARDING]----
Port
Role :Alternate Port
Port
Priority :128
Port Cost(Dot1D) :Config=Auto / Active=4
Desg.
Bridge/Port :32768.005f-86a7-c080 /
128.1
Port
Edged :Config=Default /
Active=Disabled
Point-to-point :Config=Auto / Active=True
Transit
Limit :6 packets/hello
Protection Type :None
Port STP
Mode :VBST
BPDU
Encapsulation :Config=VBST / Active=VBST
BPDU
Sent :0
TCN: 0, Config: 0, RST: 0
BPDU
Received :0
TCN: 0, Confi : 0, RST: 0
[HUAWEI]disp
stp vlan 2
-------[VLAN 2 Global Info][Mode VBST]-------
Bridge ID :32768.3ce8-247d-1410
Bridge Diameter :7
Config Times :Hello 2s MaxAge 20s FwDly 15s
Active Times :Hello 2s MaxAge 20s FwDly 15s
Root ID / RPC :32768.005f-86a7-2a00 / 4
RootPortId :128.4093 (GigabitEthernet0/0/1)
Root Type :Normal
BPDU-Protection :Disabled
STP Converge Mode :Normal
Time since last TC :0 days 0h:18m:33s
Number of TC :59
----[Port4093(GigabitEthernet0/0/1)][FORWARDING]----
Port
Role :Root Port
Port
Priority :128
Port
Cost(Dot1D) :Config=4 / Active=4
Desg.
Bridge/Port :32768.005f-86a7-2a00 /
128.1
Port
Edged :Config=Default /
Active=Disabled
Point-to-point :Config=Auto / Active=True
Transit
Limit :6 packets/hello
Protection Type :None
Port STP
Mode :VBST
BPDU
Encapsulation :Config=VBST / Active=VBST
BPDU
Sent :0
TCN: 0, Config: 0, RST: 0
BPDU
Received :0
TCN: 0, Config: 0, RST: 0
----[Port4092(GigabitEthernet0/0/2)][DISCARDING]----
Port
Role :Alternate Port
Port
Priority :128
Port
Cost(Dot1D) :Config=Auto / Active=4
Desg.
Bridge/Port :32768.005f-86a7-c080 / 128.1
Port
Edged :Config=Default /
Active=Disabled
Point-to-point :Config=Auto / Active=True
Transit
Limit :6 packets/hello
Protection Type :None
Port STP
Mode :VBST
BPDU
Encapsulation :Config=VBST / Active=VBST
BPDU
Sent :0
TCN: 0, Config: 0, RST: 0
BPDU
Received :0
TCN: 0, Config: 0, RST: 0
[HUAWEI]
4.- Resumen: el comportamiento es el esperado a este tipo de topología, podemos decir que pueden
convivir PVSTP+ con VBST mucho mas fácil que si se debiera implementar MST en ambos equipos.
(2022) I was in Chinatown
Rosario, Argentina