Hi
We have a couple of port-channels between Cisco 4948 and Cisco ASR 9006
devices, periodicity we are seeing these error disable with the following.
4948 log:
%SPANTREE-5-ROOTCHANGE: Root Changed for vlan 1234: New Root Port is
Port-channel2. New Root Mac Address is xxxx.xxxx.0cc0
%SPANTREE-5-ROOTCHANGE: Root Changed for vlan 1234: New Root Port is
Port-channel2. New Root Mac Address is xxxx.xxxx.0cc0
%SPANTREE-5-TOPOTRAP: Topology Change Trap for vlan 1234
%PM-4-ERR_DISABLE: channel-misconfig (STP) error detected on Po2,
putting Te1/50 in err-disable state
%EC-5-UNBUNDLE: Interface Te1/50 left the port-channel Po2
%PM-4-ERR_DISABLE: channel-misconfig (STP) error detected on Po2,
putting Te1/52 in err-disable state
%EC-5-UNBUNDLE: Interface Te1/52 left the port-channel Po2
%PM-4-ERR_DISABLE: channel-misconfig (STP) error detected on Po2,
putting Po2 in err-disable state
ASR log:
ifmgr[209]: %PKT_INFRA-LINK-3-UPDOWN : Interface
GigabitEthernet0/0/0/18, changed state to Down
ifmgr[209]: %PKT_INFRA-LINEPROTO-5-UPDOWN : Line protocol on Interface
GigabitEthernet0/0/0/18, changed state to Down
ifmgr[209]: %PKT_INFRA-LINK-3-UPDOWN : Interface
GigabitEthernet0/0/0/19, changed state to Down
ifmgr[209]: %PKT_INFRA-LINEPROTO-5-UPDOWN : Line protocol on Interface
GigabitEthernet0/0/0/19, changed state to Down
BM-DISTRIB[1155]: %L2-BM-6-ACTIVE : GigabitEthernet0/0/0/18 is no longer
Active as part of Bundle-Ether2 (Link is down)
BM-DISTRIB[1155]: %L2-BM-6-ACTIVE : GigabitEthernet0/0/0/19 is no longer
Active as part of Bundle-Ether2 (Link is down)
ifmgr[248]: %PKT_INFRA-LINK-3-UPDOWN : Interface Bundle-Ether2, changed
state to Down
ifmgr[248]: %PKT_INFRA-LINEPROTO-5-UPDOWN : Line protocol on Interface
Bundle-Ether2, changed state to Down
ifmgr[248]: %PKT_INFRA-LINK-3-UPDOWN : Interface Bundle-Ether2.1234,
changed state to Down
ifmgr[248]: %PKT_INFRA-LINEPROTO-5-UPDOWN : Line protocol on Interface
Bundle-Ether2.1234, changed state to Down
Is there anything that I maybe missing on the ASR configuration which
might be causing this to happen?
----------------------------------------------------------------------------------------------------------
interface GigabitEthernet0/0/0/18
bundle id 2 mode active
cdp
negotiation auto
!
interface GigabitEthernet0/0/0/19
bundle id 2 mode active
cdp
negotiation auto
!
interface Bundle-Ether2
mtu 9198
!
interface Bundle-Ether2.1234 l2transport
encapsulation dot1q 1234
rewrite ingress tag pop 1 symmetric
!
----------------------------------------------------------------------------------------------------------
#show bundle bundle-ether 2
Tue Oct 11 10:51:59.942 UTC
Bundle-Ether2
Status: Up
Local links <active/standby/configured>: 2 / 0 / 2
Local bandwidth <effective/available>: 2000000 (2000000) kbps
MAC address (source): 00c1.6408.f1c3 (Chassis pool)
Inter-chassis link: No
Minimum active links / bandwidth: 1 / 1 kbps
Maximum active links: 64
Wait while timer: 2000 ms
Load balancing: Default
LACP: Operational
Flap suppression timer: Off
Cisco extensions: Disabled
Non-revertive: Disabled
mLACP: Not configured
IPv4 BFD: Not configured
Port Device State Port ID
B/W, kbps
-------------------- --------------- ----------- --------------
----------
Gi0/0/0/18 Local Active 0x8000,
0x0004 1000000
Link is Active
Gi0/0/0/19 Local Active 0x8000,
0x0003 1000000
Link is Active
----------------------------------------------------------------------------------------------------------
Bundle-Ether2.1234 is attached to a VPLS going off to other parts of the
network.
Cisco 4948 config:
!
interface TenGigabitEthernet1/50
switchport trunk allowed vlan 1234,1235, etc
switchport mode trunk
mtu 9198
logging event link-status
channel-protocol lacp
channel-group 2 mode active
!
interface TenGigabitEthernet1/52
switchport trunk allowed vlan 1234,1235, etc
switchport mode trunk
mtu 9198
logging event link-status
channel-protocol lacp
channel-group 2 mode active
!
interface Port-channel2
switchport
switchport trunk allowed vlan 1234,1235, etc
switchport mode trunk
mtu 9198
!
----------------------------------------------------------------------------------------------------------
#show etherchannel 2 detail
Group state = L2
Ports: 2 Maxports = 8
Port-channels: 1 Max Port-channels = 1
Protocol: LACP
Minimum Links: 0
Ports in the group:
-------------------
Port: Te1/50
------------
Port state = Up Mstr Assoc In-Bndl
Channel group = 2 Mode = Active Gcchange = -
Port-channel = Po2 GC = - Pseudo port-channel = Po2
Port index = 1 Load = 0x00 Protocol = LACP
Flags: S - Device is sending Slow LACPDUs F - Device is sending fast
LACPDUs.
A - Device is in active mode. P - Device is in passive mode.
Local information:
LACP port Admin Oper Port Port
Port Flags State Priority Key Key Number State
Te1/50 SA bndl 32768 0x2 0x2 0x33 0x3D
Partner's information:
LACP port Admin Oper Port Port
Port Flags Priority Dev ID Age key Key Number State
Te1/50 SA 32768 00c1.6408.f1c4 21s 0x0 0x2 0x4 0x3D
Age of the port in the current state: 0d:15h:36m:32s
Port: Te1/52
------------
Port state = Up Mstr Assoc In-Bndl
Channel group = 2 Mode = Active Gcchange = -
Port-channel = Po2 GC = - Pseudo port-channel = Po2
Port index = 0 Load = 0x00 Protocol = LACP
Flags: S - Device is sending Slow LACPDUs F - Device is sending fast
LACPDUs.
A - Device is in active mode. P - Device is in passive mode.
Local information:
LACP port Admin Oper Port Port
Port Flags State Priority Key Key Number State
Te1/52 SA bndl 32768 0x2 0x2 0x35 0x3D
Partner's information:
LACP port Admin Oper Port Port
Port Flags Priority Dev ID Age key Key Number State
Te1/52 SA 32768 00c1.6408.f1c4 21s 0x0 0x2 0x3 0x3D
Age of the port in the current state: 0d:15h:36m:33s
Port-channels in the group:
---------------------------
Port-channel: Po2 (Primary Aggregator)
------------
Age of the Port-channel = 154d:19h:59m:09s
Logical slot/port = 21/2 Number of ports = 2
Port state = Port-channel Ag-Inuse
Protocol = LACP
Port security = Disabled
Ports in the Port-channel:
Index Load Port EC state No of bits
------+------+------+------------------+-----------
1 00 Te1/50 Active 0
0 00 Te1/52 Active 0
Time since last port bundled: 0d:15h:36m:32s Te1/50
Time since last port Un-bundled: 0d:15h:39m:40s Te1/52
----------------------------------------------------------------------------------------------------------
ASR is running XR 5.3.3
4948 is running IOS 15.1(2)SG7
Any ideas on what the issue might be?
Thanks
David
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