Thoughts and suggestions to this issue.
We just deployed some meraki's into our environment as depicted in the following topology that attached.
configs on the Core: the same config is on g1/4/5 and g1/0/52
interface GigabitEthernet2/4/5
description UPLINK>IPORPIDF150-SW30_G0/24
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,11,46,56,58,75,77,81,99,171,210,235,332
udld port aggressive
switchport mode trunk
spanning-tree link-type point-to-point
Once we connected the UPLINK from g1/0/52 on the 3750 to the Merakis port 24 we started receiveing the following errors.
%PM-SW1_SP-4-ERR_DISABLE: udld error detected on Gi2/4/5, putting Gi2/4/5 in err-disable state
%UDLD-SW1_SP-4-UDLD_PORT_DISABLED: UDLD disabled interface Gi2/4/5, aggressive mode failure detected
Dec 22 20:00:17.250: %PM-SW1_SP-4-ERR_DISABLE: udld error detected on Gi2/4/5, putting Gi2/4/5 in err-disable state
Dec 22 20:00:17.394: %PM-SW2_SPSTBY-4-ERR_DISABLE: udld error detected on Gi2/4/5, putting Gi2/4/5 in err-disable state
%SPANTREE-SW1_SP-2-RECV_PVID_ERR: Received BPDU with inconsistent peer vlan id 1 on GigabitEthernet2/4/5 VLAN99.
Dec 22 19:41:42.114: %SPANTREE-SW1_SP-2-BLOCK_PVID_PEER: Blocking GigabitEthernet2/4/5 on VLAN0001. Inconsistent peer vlan.
Dec 22 19:41:42.114: %SPANTREE-SW1_SP-2-BLOCK_PVID_LOCAL: Blocking GigabitEthernet2/4/5 on VLAN0099. Inconsistent local vlan.
Dec 22 19:41:57.114: %SPANTREE-SW1_SP-2-UNBLOCK_CONSIST_PORT: Unblocking GigabitEthernet2/4/5 on VLAN0001. Port consistency restored.
Dec 22 19:41:57.114: %SPANTREE-SW1_SP-2-UNBLOCK_CONSIST_PORT: Unblocking GigabitEthernet2/4/5 on VLAN0099. Port consistency restored
has_js=1; _ga=GA1.3.459810050.1421789763
We removed ''udld port aggressive'' from all trunk ports and everything was stable no errors
***Note the UDLD errors happen on both fiber and copper uplinks. we used the copper port on the meraki to verify that the Fiber uplink was causing the issue.
We are assuming that the Meraki switches is UDLD compatable and can not determine RSTP BPDU in relationship with udld.
Kind Regards;
LK
