Hi,
We're using a M100e chassis with 2 M6220 switches. The M6220 aren't connected with eachother, but are connected to 2 Cisco 2970G's:
M6220 <--> C2970G <--> C2970G <--> M6220
We're experiencing performance issues, like 1% packetloss and slow responses.
Both Cisco switche do not show any error or warning in the logs, but both powerconnects are flooded with these messages:
<189> APR 23 17:19:12 10.0.250.22-1 ISDP[122766080]: isdp_txrx.c(169) 459307 %%Foreign pdu on interface Po1
I've been searching the whole net, but haven't found an explanation of these errors.
Does anyone know where these errors come from?
Config on Powerconnects:
interface Gi1/0/17
channel-group 1 mode active
description "C2970G-a"
mtu 9216
switchport mode trunk
exit
!
interface Gi1/0/18
--More-- or (q)uit
channel-group 1 mode active
description "C2970G-a"
mtu 9216
switchport mode trunk
exit
!
interface Gi1/0/19
channel-group 1 mode active
description "C2970G-a"
mtu 9216
switchport mode trunk
exit
!
interface Gi1/0/20
channel-group 1 mode active
description "C2970G-a"
mtu 9216
switchport mode trunk
exit
!
interface port-channel 1
switchport mode trunk
mtu 9000
Config on Cisco's:
interface Port-channel2
description PCM6220-a
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1-1001,1006-4094
switchport mode trunk
spanning-tree bpdufilter enable
!
interface GigabitEthernet0/21
description EC2-PCM6220-a
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1-1001,1006-4094
switchport mode trunk
channel-protocol lacp
channel-group 2 mode active
!
interface GigabitEthernet0/22
description EC2-PCM6220-a
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1-1001,1006-4094
switchport mode trunk
channel-protocol lacp
channel-group 2 mode active
!
interface GigabitEthernet0/23
description EC2-PCM6220-a
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1-1001,1006-4094
switchport mode trunk
channel-protocol lacp
channel-group 2 mode active
!
interface GigabitEthernet0/24
description EC2-PCM6220-a
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1-1001,1006-4094
switchport mode trunk
channel-protocol lacp
channel-group 2 mode active