Peace,
here is the message:
2017 Jun 7 17:21:01 Pri-DC-Core-2 %FWM-2-STM_LOOP_DETECT: Loops detected in the network for mac fc15.b
422.8ff0 among ports Eth103/1/11 and Po23 vlan 312 - Disabling dynamic learn notifications for 180 seco
nds
Pri-DC-Core-2# sh mac address-table dynamic address fc15.b422.8ff0
Legend:
* - primary entry, G - Gateway MAC, (R) - Routed MAC, O - Overlay MAC
age - seconds since last seen,+ - primary entry using vPC Peer-Link
VLAN MAC Address Type age Secure NTFY Ports/SWID.SSID.LID
---------+-----------------+--------+---------+------+----+------------------
* 312 fc15.b422.8ff0 dynamic 0 F F Eth103/1/11
Pri-DC-Core-2# sh run int Eth103/1/11
!Command: show running-config interface Ethernet103/1/11
!Time: Wed Jun 7 17:24:53 2017
version 7.0(0)N1(1)
interface Ethernet103/1/11
switchport mode trunk
switchport trunk native vlan 312
switchport trunk allowed vlan 310-314
spanning-tree port type edge trunk
Pri-DC-Core-2# sh run int Po23
!Command: show running-config interface port-channel23
!Time: Wed Jun 7 17:25:27 2017
version 7.0(0)N1(1)
interface port-channel23
description vPC Peer Link
switchport mode trunk
switchport trunk native vlan 998
switchport trunk allowed vlan 310-315,350-351
spanning-tree port type network
vpc peer-link
going to the other nexus:
Pri-DC-Core-1# sh mac address-table dynamic address fc15.b422.8ff0
Pri-DC-Core-1#
!Command: show running-config interface port-channel23
!Time: Wed Jun 7 17:31:27 2017
version 7.0(0)N1(1)
interface port-channel23
description vPC Peer Link
switchport mode trunk
switchport trunk native vlan 998
switchport trunk allowed vlan 310-315,350-351
spanning-tree port type network
vpc peer-link
it is most probable that the same server is connected to both nexuses, and this problem existed before we bought the other nexus and the new nexus was supposed to solve the problem, is there something that can be done? any more information needed?
