Hi all,
I have a stack core switch dell N4032 and 4 HP 2530-48G-PoEP Switch where 2 are for data traffic and the other two are for VoIP. I also have 3 vlans configured (50, 70 and 250), if i connect the data switch number one y see this logs on the core:
<189> Jan 13 11:27:38 SWC-PATRICIOS-1 TRAPMGR[dot1s_task]: traputil.c(763) 2018754 %% Po2 is transitioned from the Forwarding state to the Blocking state in VLAN 250
<189> Jan 13 11:27:38 SWC-PATRICIOS-1 TRAPMGR[dot1s_task]: traputil.c(763) 2018753 %% Po2 is transitioned from the Learning state to the Forwarding state in VLAN 70
<189> Jan 13 11:27:38 SWC-PATRICIOS-1 TRAPMGR[dot1s_task]: traputil.c(763) 2018752 %% Po2 is transitioned from the Learning state to the Forwarding state in VLAN 50
<189> Jan 13 11:27:38 SWC-PATRICIOS-1 TRAPMGR[dot1s_task]: traputil.c(763) 2018751 %% Po2 is transitioned from the Forwarding state to the Blocking state in VLAN 70
<189> Jan 13 11:27:38 SWC-PATRICIOS-1 TRAPMGR[dot1s_task]: traputil.c(763) 2018750 %% Po2 is transitioned from the Forwarding state to the Blocking state in VLAN 50
<189> Jan 13 11:27:37 SWC-PATRICIOS-1 TRAPMGR[dot1s_task]: traputil.c(763) 2018749 %% Po2 is transitioned from the Learning state to the Forwarding state in VLAN 250
Here is the config on the dell core:
SWC-PATRICIOS#show running-config interface te1/0/1
channel-group 1 mode on
description "LAG SW1"
spanning-tree guard loop
SWC-PATRICIOS#show running-config interface te2/0/1
channel-group 1 mode on
description "LAG SW1"
spanning-tree guard loop
SWC-PATRICIOS#show running-config interface po1
description "Link to SWA-PATRICIOS-01"
spanning-tree guard loop
switchport mode general
switchport general allowed vlan add 2,50,70,250 tagged
SWC-PATRICIOS#show running-config interface po2
description "Link to SWA-PATRICIOS-02"
switchport mode general
switchport general allowed vlan add 2,50,70,250 tagged
I am observing that the root bridge is being SWA-PATRICIOS-01 (data switch 1) however the priority of STP is lower in the core dell.
Do you have any idea why this can happen?
PD: The LAG configuration on the Dell stack is static, while on aruba switches it is LACP, can this be related to the problem?
Regards!