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Nexus 3172T spanning-tree question

katerina.dardoufa
Level 4
Level 4

‎11-14-2017 05:11 AM - edited ‎03-08-2019 12:44 PM

Hi all,

 

we have a pair of Nexus 3172T forming a vPC. These are connected to our core switches (6509) via trunks, that for the time being allow only one vlan (137).

The 6509 are the root bridges for all vlans, including x, but when I run "show spanning-tree vlan 137" on the 3172T, they say that they are root bridge.

 

Config from 6509

spanning-tree vlan 137 priority 8192

 

Config on 3272T

I explicitly configured the priority for all vlans on the nexus to be 32768, but it does not show up on the running config.

Show spanning-tree vlan 137 states:

VLAN0137
  Spanning tree enabled protocol rstp
  Root ID    Priority    32905
             Address     0023.04ee.be0f
             This bridge is the root
             Hello Time  2  sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32905  (priority 32768 sys-id-ext 137)
             Address     0023.04ee.be0f
             Hello Time  2  sec  Max Age 20 sec  Forward Delay 15 sec

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Po1              Root FWD 250       128.4096 (vPC peer-link) Network P2p
Po10             Desg FWD 200       128.4105 (vPC) P2p
Po20             Desg FWD 200       128.4115 (vPC) P2p

 

 

Is this correct? Shouldn't the 6509 show up as root on the Nexus 3K?

 

Thank you in advance,

Katerina

Labels:
0 Helpful
5 Replies 5

Austin Sabio
Level 4
Level 4

‎11-14-2017 09:13 AM

Please post on 6500

 

6500# show interface trunk 
6500# show spanning-tree vlan 137
6500# show spanning-tree interface x detail (to N3K)

also, can you share your topology like how VPC is formed? specifically, 

N3K# show vpc
N3K# show vpc consistency-parameters interface port-channel 1
N3K# show vpc consistency-parameters interface port-channel 10
N3K# show vpc consistency-parameters interface port-channel 20

And more spanning tree info from N3K

N3K# show spanning-tree vlan 137
N3K# show spanning-tree internal event-history tree 137 brief
N3K# show spanning-tree internal info tree 137 interface port-channel 1
N3K# show spanning-tree internal info tree 137 interface port-channel 10
N3K# show spanning-tree internal info tree 137 interface port-channel 20

-Austin 

0 Helpful

katerina.dardoufa
Level 4
Level 4
In response to Austin Sabio

‎11-16-2017 12:09 AM

Attached you will find the topology.

 

Regarding the bellow commands:

6500# show interface trunk 
6500# show spanning-tree vlan 137
6500# show spanning-tree interface x detail (to N3K) 

Po10 & Po20 as well as their physical interfaces do not include vlan 137.

 

sh spanning-tree int Po10 detail
 Port 1667 (Port-channel10) of VLAN0001 is designated forwarding
   Port path cost 3, Port priority 128, Port Identifier 128.1667.
   Designated root has priority 8193, address 10bd.18e5.be40
   Designated bridge has priority 8193, address 10bd.18e5.be40
   Designated port id is 128.1667, 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
   Root guard is enabled on the port
   BPDU: sent 110, received 0
sh spanning-tree int gi3/27 detail
 Port 1667 (Port-channel10) of VLAN0001 is designated forwarding
   Port path cost 3, Port priority 128, Port Identifier 128.1667.
   Designated root has priority 8193, address 10bd.18e5.be40
   Designated bridge has priority 8193, address 10bd.18e5.be40
   Designated port id is 128.1667, 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
   Root guard is enabled on the port
   BPDU: sent 114, received 0                           
sh spanning-tree int gi3/28 detail
 Port 1667 (Port-channel10) of VLAN0001 is designated forwarding
   Port path cost 3, Port priority 128, Port Identifier 128.1667.
   Designated root has priority 8193, address 10bd.18e5.be40
   Designated bridge has priority 8193, address 10bd.18e5.be40
   Designated port id is 128.1667, 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
   Root guard is enabled on the port
   BPDU: sent 120, received 0

 

On the Nexus side:

 

sh vpc
Legend:
                (*) - local vPC is down, forwarding via vPC peer-link

vPC domain id                     : 15  
Peer status                       : peer adjacency formed ok      
vPC keep-alive status             : peer is alive                 
Configuration consistency status  : success
Per-vlan consistency status       : success                       
Type-2 consistency status         : success
vPC role                          : primary                       
Number of vPCs configured         : 2   
Peer Gateway                      : Disabled
Dual-active excluded VLANs        : -
Graceful Consistency Check        : Enabled
Auto-recovery status              : Enabled, timer is off.(timeout = 240s)
Delay-restore status              : Timer is off.(timeout = 30s)
Delay-restore SVI status          : Timer is off.(timeout = 10s)

vPC Peer-link status
---------------------------------------------------------------------
id   Port   Status Active vlans    
--   ----   ------ --------------------------------------------------
1    Po1    up     1,137,146-149,400-402                                  

vPC status
----------------------------------------------------------------------
id   Port   Status Consistency Reason                     Active vlans
--   ----   ------ ----------- ------                     ------------
10   Po10   up     success     success                    137             
                                                                          
20   Po20   up     success     success                    137             
                                                                          
sh vpc consistency-parameters interface po1
Note: **** Global type-1 parameters will be displayed for peer-link *****
    Legend:
        Type 1 : vPC will be suspended in case of mismatch

Name                        Type  Local Value            Peer Value             
-------------               ----  ---------------------- -----------------------
Vlan to Vn-segment Map      1     No Relevant Maps       No Relevant Maps      
STP Mode                    1     Rapid-PVST             Rapid-PVST            
STP Disabled                1     None                   None                  
STP MST Region Name         1     ""                     ""                    
STP MST Region Revision     1     0                      0                     
STP MST Region Instance to  1                                                  
 VLAN Mapping                                                                  
STP Loopguard               1     Disabled               Disabled              
STP Bridge Assurance        1     Enabled                Enabled               
STP Port Type, Edge         1     Edge, Enabled, Enabled Edge, Enabled, Enabled
BPDUFilter, Edge BPDUGuard                                                     
STP MST Simulate PVST       1     Enabled                Enabled               
Nve Admin State, Src Admin  1     None                   None                  
 State, Secondary IP, Host                                                     
 Reach Mode                                                                    
Nve Vni Configuration       1     None                   None                  
VTP domain                  2     MK-Oracle              MK-Oracle             
VTP version                 2     1                      1                     
VTP mode                    2     Transparent            Transparent           
VTP password                2                                                  
VTP pruning status          2     Disabled               Disabled              
Allowed VLANs               -     1,137,146-149,400-402  1,137,146-149,400-402
Local suspended VLANs       -     -                      -                     

 

sh vpc consistency-parameters interface po10

    Legend:
        Type 1 : vPC will be suspended in case of mismatch

Name                        Type  Local Value            Peer Value             
-------------               ----  ---------------------- -----------------------
STP Port Type               1     Default                Default               
STP Port Guard              1     Default                Default               
STP MST Simulate PVST       1     Default                Default               
lag-id                      1     [(2000,                [(2000,               
                                  0-23-4-ee-be-f, 800a,  0-23-4-ee-be-f, 800a,
                                  0, 0), (8000,          0, 0), (8000,         
                                  10-bd-18-e5-be-40, a,  10-bd-18-e5-be-40, a,
                                  0, 0)]                 0, 0)]                
mode                        1     active                 active                
delayed-lacp                1     disabled               disabled              
Speed                       1     1000 Mb/s              1000 Mb/s             
Duplex                      1     full                   full                  
Port Mode                   1     trunk                  trunk                 
Native Vlan                 1     1                      1                     
MTU                         1     1500                   1500                  
Dot1q Tunnel                1     no                     no                    
Switchport Isolated         1     0                      0                     
vPC card type               1     N3K                    N3K                   
Allowed VLANs               -     137                    137                   
Local suspended VLANs       -     -                      -          

           
 sh vpc consistency-parameters interface po20

    Legend:
        Type 1 : vPC will be suspended in case of mismatch

Name                        Type  Local Value            Peer Value             
-------------               ----  ---------------------- -----------------------
STP Port Type               1     Default                Default               
STP Port Guard              1     Default                Default               
STP MST Simulate PVST       1     Default                Default               
lag-id                      1     [(2000,                [(2000,               
                                  0-23-4-ee-be-f, 8014,  0-23-4-ee-be-f, 8014,
                                  0, 0), (8000,          0, 0), (8000,         
                                  10-bd-18-e5-a9-80, 14, 10-bd-18-e5-a9-80, 14,
                                   0, 0)]                 0, 0)]               
mode                        1     active                 active                
delayed-lacp                1     disabled               disabled              
Speed                       1     1000 Mb/s              1000 Mb/s             
Duplex                      1     full                   full                  
Port Mode                   1     trunk                  trunk                 
Native Vlan                 1     1                      1                     
MTU                         1     1500                   1500                  
Dot1q Tunnel                1     no                     no                    
Switchport Isolated         1     0                      0                     
vPC card type               1     N3K                    N3K                   
Allowed VLANs               -     137                    137                   
Local suspended VLANs       -     -                      -       

 

sh spanning-tree vlan 137
VLAN0137
  Spanning tree enabled protocol rstp
  Root ID    Priority    32905
             Address     0023.04ee.be0f
             This bridge is the root
             Hello Time  2  sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    32905  (priority 32768 sys-id-ext 137)
             Address     0023.04ee.be0f
             Hello Time  2  sec  Max Age 20 sec  Forward Delay 15 sec

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Po1              Desg FWD 250       128.4096 (vPC peer-link) Network P2p
Po10             Desg FWD 200       128.4105 (vPC) P2p
Po20             Desg FWD 200       128.4115 (vPC) P2p
Eth1/1           Desg FWD 20000     128.1    Edge P2p

sh spanning-tree internal event-history tree 137 brief
2017:11:13 13h:47m:04s:353209us T_EV_UP          VLAN0137 [0000.0000.0000.0000 C 0 A  0 R none P none]
2017:11:13 13h:47m:05s:246460us T_UT_SBPDU       VLAN0137 [8089.0023.04ee.be0f C 0 A  0 R none P Po1]
2017:11:13 14h:00m:44s:758342us T_EV_DOWN        VLAN0137 [8089.0023.04ee.be0f C 0 A  0 R none P none]
2017:11:13 14h:00m:52s:752971us T_EV_UP          VLAN0137 [0000.0000.0000.0000 C 0 A  0 R none P none]
2017:11:13 14h:01m:22s:548678us T_EV_M_FLUSH_L   VLAN0137 [8089.0023.04ee.be0f C 0 A  0 R none P none]
2017:11:13 14h:04m:51s:303021us T_EV_M_FLUSH_L   VLAN0137 [8089.0023.04ee.be0f C 0 A  0 R none P none]
2017:11:13 14h:05m:23s:471289us T_EV_DOWN        VLAN0137 [8089.0023.04ee.be0f C 0 A  0 R none P none]
2017:11:13 14h:05m:23s:564555us T_EV_UP          VLAN0137 [0000.0000.0000.0000 C 0 A  0 R none P none]
2017:11:13 14h:16m:56s:049018us T_EV_M_FLUSH_L   VLAN0137 [8089.0023.04ee.be0f C 0 A  0 R none P none]
2017:11:13 14h:32m:04s:549508us T_EV_M_FLUSH_L   VLAN0137 [8089.0023.04ee.be0f C 0 A  0 R none P none]
2017:11:13 14h:34m:09s:549302us T_EV_M_FLUSH_L   VLAN0137 [8089.0023.04ee.be0f C 0 A  0 R none P none]

sh spanning-tree internal info tree 137 interface po 1
------- STP Port Info (vdc 1, tree 137, port Po1) ---------
dot1d info: port_num=4096, ifi=0x16000000 (port-channel1)
ISSU FALSE non-disr, prop 0, ag 0, flush 0 peer_not_disputed_count 0
stp                    0x118e206c
if_index               0x16000000
namestring             port-channel1
port_mac_addr          a023.9f70.3cd8
bandwidth              0x4c4b400
vlan                   1
native_vlan            1
duplex                 STP_PORT_DUPLEX_FULL
vlan_mode              STP_VLAN_MODE_TRUNK
lc_number              0
is_portchannel         1
proposed               0
agree                  0
new_info               0
tx_count               0
message_age            0
mdelay_active          1
dispute                0
dispute count          0
mdelay_while           0.000000
peer                   STP_PEER_RSTP
tc_needed              0
flush_needed           1
tc_acknowledge         0
self_looped            0
path_cost_explicit     0
hwstate                FWD
state                  FWD
role                   Desg
hold_timer             0x118fd654
fd_while               0x118e429c
rr_while               0x118e2834
rcvd_info_while        0x1192d1dc
tc_while               never
loopback_timer         0x118fd61c
loopback_bpdu          0
rb_while               0
cq_node_count          0
designated_root        8089.0023.04ee.be0f
designated_cost        0
designated_bridge      0000.a023.9f70.3cfc
designated_port        36864
port_id                36864
design_times           
   {msg_age 0 max_age 0 fwd_delay 0 hello_time 0 remaining_hops 0
priority               128
path_cost              250
ba_timer               00:01:23
portfast               4
bpduguard              0
bpdufilter             0
portguard              0
linktype               3
lc-issu type           default
oper_portfast          0
oper_networkport       1
oper_p2p               1
oper_bpdufilter        0
oper_bpduguard         0
oper_loopguard         0
int_bpdufilter         0
inhibit_loopguard      0
port_idle              0
inconsistency          0x0
ha_force_create        0
ha_sync                0
ha_sync_pss            0
state_change_pending   0
MCS Flags            0x120
MCT ID                 1
stats                  
fwd_transition_count   1       bpdus_in      309     bpdus_out    309   
config_bpdu_in         0       rstp_bpdu_in  309     tcn_bpdu_in  0     
config_bpdu_out        0       rstp_bpdu_out 309     tcn_bpdu_out 0     
bpdufilter_drop_in     0     
bpduguard_drop_in      0     
err_dropped_in         0     
sw_flood_in            0     
vft                    0x102ae4c0
un                     0x1192ae5c

------- Port HA info ---------------
hwstate=forwarding(4) state=forwarding(4) Role=designated(3)
Inconsistencies=0
oper_portfast  =FALSE oper_p2p       =TRUE
oper_loopguard =FALSE oper_bpdufilter=FALSE
oper_bpduguard =FALSE oper_networkport=TRUE
Designated_port:36864 Designated_cost:0
DesignatedBridge:0:0000.0000.0000 DesignatedRoot=0:0000.0000.0000
Peer Info=0x2

sh spanning-tree internal info tree 137 interface po 10
------- STP Port Info (vdc 1, tree 137, port Po10) ---------
dot1d info: port_num=4105, ifi=0x16000009 (port-channel10)
ISSU FALSE non-disr, prop 0, ag 0, flush 0 peer_not_disputed_count 0
stp                    0x118e206c
if_index               0x16000009
namestring             port-channel10
port_mac_addr          a023.9f70.3ce8
bandwidth              0x5f5e100
vlan                   1
native_vlan            1
duplex                 STP_PORT_DUPLEX_FULL
vlan_mode              STP_VLAN_MODE_TRUNK
lc_number              0
is_portchannel         1
proposed               0
agree                  0
new_info               0
tx_count               1
message_age            0
mdelay_active          1
dispute                0
dispute count          0
mdelay_while           0.000000
peer                   STP_PEER_RSTP
tc_needed              0
flush_needed           1
tc_acknowledge         0
self_looped            0
path_cost_explicit     0
hwstate                FWD
state                  FWD
role                   Desg
hold_timer             0x118e25cc
fd_while               0x118e55f4
rr_while               0x118e562c
rcvd_info_while        0x118e1dc4
tc_while               never
loopback_timer         0x118e2594
loopback_bpdu          0
rb_while               0
cq_node_count          0
designated_root        8089.0023.04ee.be0f
designated_cost        0
designated_bridge      8089.a023.9f70.3cfc
designated_port        36873
port_id                36873
design_times           
   {msg_age 0 max_age 0 fwd_delay 0 hello_time 0 remaining_hops 0
priority               128
path_cost              200
ba_timer               never
portfast               0
bpduguard              0
bpdufilter             0
portguard              0
linktype               3
lc-issu type           default
oper_portfast          0
oper_networkport       0
oper_p2p               1
oper_bpdufilter        0
oper_bpduguard         0
oper_loopguard         0
int_bpdufilter         0
inhibit_loopguard      0
port_idle              0
inconsistency          0x0
ha_force_create        0
ha_sync                0
ha_sync_pss            0
state_change_pending   0
MCS Flags            0x0
MCEC ID                10
stats                  
fwd_transition_count   0       bpdus_in      0       bpdus_out    287   
config_bpdu_in         0       rstp_bpdu_in  0       tcn_bpdu_in  0     
config_bpdu_out        0       rstp_bpdu_out 287     tcn_bpdu_out 0     
bpdufilter_drop_in     0     
bpduguard_drop_in      0     
err_dropped_in         0     
sw_flood_in            0     
vft                    0x102ae4c0
un                     0x118e1c0c

------- Port HA info ---------------
hwstate=forwarding(4) state=forwarding(4) Role=designated(3)
Inconsistencies=0
oper_portfast  =FALSE oper_p2p       =TRUE
oper_loopguard =FALSE oper_bpdufilter=FALSE
oper_bpduguard =FALSE oper_networkport=FALSE
Designated_port:36873 Designated_cost:0
DesignatedBridge:0:0000.0000.0000 DesignatedRoot=0:0000.0000.0000
Peer Info=0x2

sh spanning-tree internal info tree 137 interface po 20
------- STP Port Info (vdc 1, tree 137, port Po20) ---------
dot1d info: port_num=4115, ifi=0x16000013 (port-channel20)
ISSU FALSE non-disr, prop 0, ag 0, flush 0 peer_not_disputed_count 0
stp                    0x118e206c
if_index               0x16000013
namestring             port-channel20
port_mac_addr          a023.9f70.3cec
bandwidth              0x5f5e100
vlan                   1
native_vlan            1
duplex                 STP_PORT_DUPLEX_FULL
vlan_mode              STP_VLAN_MODE_TRUNK
lc_number              0
is_portchannel         1
proposed               0
agree                  0
new_info               0
tx_count               0
message_age            0
mdelay_active          1
dispute                0
dispute count          0
mdelay_while           0.000000
peer                   STP_PEER_RSTP
tc_needed              0
flush_needed           1
tc_acknowledge         0
self_looped            0
path_cost_explicit     0
hwstate                FWD
state                  FWD
role                   Desg
hold_timer             0x118fd6f4
fd_while               0x1192bca4
rr_while               0x1192bcdc
rcvd_info_while        0x118e3634
tc_while               never
loopback_timer         0x1192bd14
loopback_bpdu          0
rb_while               0
cq_node_count          0
designated_root        8089.0023.04ee.be0f
designated_cost        0
designated_bridge      8089.a023.9f70.3cfc
designated_port        36883
port_id                36883
design_times           
   {msg_age 0 max_age 0 fwd_delay 0 hello_time 0 remaining_hops 0
priority               128
path_cost              200
ba_timer               never
portfast               0
bpduguard              0
bpdufilter             0
portguard              0
linktype               3
lc-issu type           default
oper_portfast          0
oper_networkport       0
oper_p2p               1
oper_bpdufilter        0
oper_bpduguard         0
oper_loopguard         0
int_bpdufilter         0
inhibit_loopguard      0
port_idle              0
inconsistency          0x0
ha_force_create        0
ha_sync                0
ha_sync_pss            0
state_change_pending   0
MCS Flags            0x0
MCEC ID                20
stats                  
fwd_transition_count   0       bpdus_in      0       bpdus_out    296   
config_bpdu_in         0       rstp_bpdu_in  0       tcn_bpdu_in  0     
config_bpdu_out        0       rstp_bpdu_out 296     tcn_bpdu_out 0     
bpdufilter_drop_in     0     
bpduguard_drop_in      0     
err_dropped_in         0     
sw_flood_in            0     
vft                    0x102ae4c0
un                     0x1192bc84

------- Port HA info ---------------
hwstate=forwarding(4) state=forwarding(4) Role=designated(3)
Inconsistencies=0
oper_portfast  =FALSE oper_p2p       =TRUE
oper_loopguard =FALSE oper_bpdufilter=FALSE
oper_bpduguard =FALSE oper_networkport=FALSE
Designated_port:36883 Designated_cost:0
DesignatedBridge:0:0000.0000.0000 DesignatedRoot=0:0000.0000.0000
Peer Info=0x2

 

 

This setup is not working! The mac-address of a server on the nexus assigned to vlan 137 does not show up on the 6509.

 

I will also include part of the configuration:

6509

interface Port-channel10
 description ** LINK TO N3K **
 switchport
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 137
 no ip address
 spanning-tree guard root


interface GigabitEthernet3/27
 description ** MK-N3K-1 1/53/1 **
 switchport
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 137
 no ip address
 udld port
 spanning-tree guard root
 channel-group 10 mode active

interface GigabitEthernet3/28
 description ** MK-N3K-2 1/53/1 **
 switchport
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 137
 no ip address
 udld port
 spanning-tree guard root
 channel-group 10 mode active

 

Nexus 1:

vpc domain 15
  peer-switch
  role priority 1
  system-priority 8192
  peer-keepalive destination 1.1.1.2 source 1.1.1.1 vrf Keepalive
  auto-recovery
  ip arp synchronize

 

interface port-channel1
  description *** VPC PEER LINK ***
  switchport mode trunk
  spanning-tree port type network
  speed 40000
  vpc peer-link

interface port-channel2
  description *** VPC PEER KEEPALIVE ***
  no switchport
  speed 10000
  no negotiate auto
  vrf member Keepalive
  ip address 1.1.1.1/30

interface port-channel10
  description *** LINK TO 6509-A1***
  switchport mode trunk
  switchport trunk allowed vlan 137
  speed 1000
  vpc 10

interface port-channel20
  description *** LINK TO 6509-C1***
  switchport mode trunk
  switchport trunk allowed vlan 137
  speed 1000
  vpc 20

 

interface Ethernet1/53/1
  description *** LINK TO 6509-A1 ***
  switchport mode trunk
  switchport trunk allowed vlan 137
  spanning-tree guard loop
  speed 1000
  channel-group 10 mode active
  no shutdown

interface Ethernet1/54/1
  description *** LINK TO 6509-C1 ***
  switchport mode trunk
  switchport trunk allowed vlan 137
  spanning-tree guard loop
  speed 1000
  channel-group 20 mode active
  no shutdown

 

Nexus-2:

vpc domain 15
  peer-switch
  role priority 2
  system-priority 8192
  peer-keepalive destination 1.1.1.1 source 1.1.1.2 vrf Keepalive
  auto-recovery
  ip arp synchronize


interface port-channel1
  description *** VPC PEER LINK ***
  switchport mode trunk
  spanning-tree port type network
  speed 40000
  vpc peer-link

interface port-channel2
  description *** VPC PEER KEEPALIVE ***
  no switchport
  speed 10000
  no negotiate auto
  vrf member Keepalive
  ip address 1.1.1.2/30

interface port-channel10
  switchport mode trunk
  switchport trunk allowed vlan 137
  speed 1000
  vpc 10

interface port-channel20
  switchport mode trunk
  switchport trunk allowed vlan 137
  speed 1000
  vpc 20

interface Ethernet1/53/1
  switchport mode trunk
  switchport trunk allowed vlan 137
  spanning-tree guard loop
  speed 1000
  channel-group 10 mode active
  no shutdown

 

interface Ethernet1/54/1
  switchport mode trunk
  switchport trunk allowed vlan 137
  spanning-tree guard loop
  speed 1000
  channel-group 20 mode active
  no shutdown

 

 

Please advise...

 

Thank you in advance,

Katerina

 

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0 Helpful

katerina.dardoufa
Level 4
Level 4
In response to katerina.dardoufa

‎11-16-2017 05:52 AM

Problem solved!!!!

Wrong configuration on the port-channels on the 6509 side.

 

Thank you for your time!

 

 

0 Helpful

Austin Sabio
Level 4
Level 4
In response to katerina.dardoufa

‎11-17-2017 06:12 AM

Excellent. If interested, see below pdf for spanning tree design guidelines and VPC. 

https://www.cisco.com/c/dam/en/us/products/collateral/switches/nexus-7000-series-switches/C07-572834-00_STDG_NX-OS_vPC_DG.pdf

 

0 Helpful

paul driver
VIP
VIP

‎11-14-2017 12:08 PM

Hello

Its interesting to see that 3272T has a root port even when it stated it the root?

Is vlan 137 being allowed over the vPC ( dont forget you allow the vlan on the virtual interface NOT the physical interfaces of a Port-channel)


res
Paul

 

 

 


Please rate and mark as an accepted solution if you have found any of the information provided useful.
This then could assist others on these forums to find a valuable answer and broadens the community’s global network.

Kind Regards
Paul
0 Helpful
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