07-17-2015 06:57 AM - edited 03-08-2019 01:00 AM
Hi
New issue since upgrading the WS-C2960S-48LPS-L to c2960s-universalk9-mz.150-2.SE8.bin, MAC flapping between local access ports and the uplink.
These are all users PCs connected, anyone else seen this before for single NIC devices?
Jul 17 11:52:47.743: %SW_MATM-4-MACFLAP_NOTIF: Host 54be.xxxx.xxxx in vlan 108 is flapping between port Gi3/0/1 and port Po1
Jul 17 11:52:58.507: %SW_MATM-4-MACFLAP_NOTIF: Host 54be.xxxx.xxxx in vlan 108 is flapping between port Gi3/0/1 and port Po1
Jul 17 11:53:13.109: %SW_MATM-4-MACFLAP_NOTIF: Host 54be.xxxx.xxxx in vlan 108 is flapping between port Gi3/0/1 and port Po1
Jul 17 11:53:28.985: %SW_MATM-4-MACFLAP_NOTIF: Host 54be.xxxx.xxxx in vlan 108 is flapping between port Po1 and port Gi3/0/1
Jul 17 11:53:44.059: %SW_MATM-4-MACFLAP_NOTIF: Host 54be.xxxx.xxxx in vlan 108 is flapping between port Gi3/0/1 and port Po1
Jul 17 11:53:58.504: %SW_MATM-4-MACFLAP_NOTIF: Host 54be.xxxx.xxxx in vlan 108 is flapping between port Gi3/0/1 and port Po1
Jul 17 11:56:23.430: %SW_MATM-4-MACFLAP_NOTIF: Host 28d2.xxxx.xxxx in vlan 108 is flapping between port Po1 and port Gi1/0/29
Jul 17 13:00:09.956: %SW_MATM-4-MACFLAP_NOTIF: Host 28d2.xxxx.xxxx in vlan 108 is flapping between port Po1 and port Gi1/0/29
Jul 17 13:00:16.782: %SW_MATM-4-MACFLAP_NOTIF: Host 28d2.xxxx.xxxx in vlan 108 is flapping between port Po1 and port Gi1/0/29
Jul 17 13:03:53.266: %SW_MATM-4-MACFLAP_NOTIF: Host 28d2.xxxx.xxxx in vlan 108 is flapping between port Po1 and port Gi1/0/29
Jul 17 13:08:22.443: %SW_MATM-4-MACFLAP_NOTIF: Host 000e.xxxx.xxxx in vlan 108 is flapping between port Po1 and port Gi3/0/39
3x WS-C2960S-48LPS-L stacked running c2960s-universalk9-mz.150-2.SE8.bin for 1 week, 2 days.
#sh etherchannel sum
Flags: D - down P - bundled in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use f - failed to allocate aggregator
M - not in use, minimum links not met
u - unsuitable for bundling
w - waiting to be aggregated
d - default port
Number of channel-groups in use: 1
Number of aggregators: 1
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(SU) LACP Gi1/0/47(P) Gi1/0/48(P) Gi2/0/47(P)
Gi2/0/48(P) Gi3/0/47(P) Gi3/0/48(P)
#sh run int Gi1/0/47
Building configuration...
Current configuration : 231 bytes
!
interface GigabitEthernet1/0/47
description ### Uplink to Core-3750-switch-Gi1/0/1 ###
switchport trunk allowed vlan 1,10,100-103,105,106,108,112,116,120,301
switchport mode trunk
mls qos trust dscp
channel-group 1 mode active
end
#sh run int Gi1/0/48
Building configuration...
Current configuration : 231 bytes
!
interface GigabitEthernet1/0/48
description ### Uplink to Core-3750-switch-Gi2/0/1 ###
switchport trunk allowed vlan 1,10,100-103,105,106,108,112,116,120,301
switchport mode trunk
mls qos trust dscp
channel-group 1 mode active
end
#sh run int Gi2/0/47
Building configuration...
Current configuration : 292 bytes
!
interface GigabitEthernet2/0/47
description ### Uplink to Core-3750-switch-Gi1/0/2 ###
switchport trunk allowed vlan 1,10,100-103,105,106,108,112,116,120,301
switchport mode trunk
power inline auto max 15400
mls qos trust dscp
spanning-tree bpduguard enable
channel-group 1 mode active
end
#sh run int Gi2/0/48
Building configuration...
Current configuration : 260 bytes
!
interface GigabitEthernet2/0/48
description ### Uplink to Core-3750-switch-Gi2/0/2 ###
switchport trunk allowed vlan 1,10,100-103,105,106,108,112,116,120,301
switchport mode trunk
power inline auto max 15400
mls qos trust dscp
channel-group 1 mode active
end
#sh run int Gi3/0/47
Building configuration...
Current configuration : 260 bytes
!
interface GigabitEthernet3/0/47
description ### Uplink to Core-3750-switch-Gi1/0/3 ###
switchport trunk allowed vlan 1,10,100-103,105,106,108,112,116,120,301
switchport mode trunk
power inline auto max 15400
mls qos trust dscp
channel-group 1 mode active
end
#sh run int Gi3/0/48
Building configuration...
Current configuration : 260 bytes
!
interface GigabitEthernet3/0/48
description ### Uplink to Core-3750-switch-Gi2/0/3 ###
switchport trunk allowed vlan 1,10,100-103,105,106,108,112,116,120,301
switchport mode trunk
power inline auto max 15400
mls qos trust dscp
channel-group 1 mode active
end
#
#sh spanning-tree sum
Switch is in pvst mode
Root bridge for: VLAN0099, VLAN0107, VLAN0118, VLAN0121-VLAN0122, VLAN0555
VLAN0999
EtherChannel misconfig guard is enabled
Extended system ID is enabled
Portfast Default is disabled
PortFast BPDU Guard Default is disabled
Portfast BPDU Filter Default is disabled
Loopguard Default is disabled
UplinkFast is disabled
BackboneFast is disabled
Configured Pathcost method used is short
Name Blocking Listening Learning Forwarding STP Active
---------------------- -------- --------- -------- ---------- ----------
VLAN0001 0 0 0 6 6
VLAN0010 0 0 0 77 77
VLAN0099 0 0 0 2 2
VLAN0100 0 0 0 3 3
VLAN0101 0 0 0 7 7
VLAN0102 0 0 0 3 3
VLAN0103 0 0 0 6 6
VLAN0105 0 0 0 3 3
VLAN0106 0 0 0 3 3
VLAN0107 0 0 0 2 2
VLAN0108 0 0 0 72 72
VLAN0112 0 0 0 6 6
VLAN0116 0 0 0 3 3
VLAN0118 0 0 0 2 2
VLAN0120 0 0 0 4 4
VLAN0121 0 0 0 2 2
VLAN0122 0 0 0 2 2
VLAN0301 0 0 0 6 6
VLAN0555 0 0 0 2 2
VLAN0999 0 0 0 2 2
---------------------- -------- --------- -------- ---------- ----------
20 vlans 0 0 0 213 213
UKHPASW1#
Thanks
Iain
07-17-2015 07:39 AM
For troubleshooting U can -
check Gi3/0/1 interface for any kind of errors with sh int Gi3/0/1.
Check arp table frequently changes or not ?
Check for interface speed on both side
07-17-2015 08:45 AM
Thanks for your reply;
This is one that flapped recently (Gi3/0/1) has not flapped since.
Jul 17 15:36:58.362: %SW_MATM-4-MACFLAP_NOTIF: Host 8434.xxxx.xxxx in vlan 108 is flapping between port Po1 and port Gi2/0/11
#sh int Gi2/0/11
GigabitEthernet2/0/11 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is e840.405c.470b (bia e840.405c.470b)
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:53, output 00:00:44, output hang never
Last clearing of "show interface" counters 00:33:04
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 21000 bits/sec, 22 packets/sec
998 packets input, 160991 bytes, 0 no buffer
Received 202 broadcasts (107 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 107 multicast, 0 pause input
0 input packets with dribble condition detected
32836 packets output, 4551141 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
#
I have also changed the aging
#sh mac address-table aging-tim
Global Aging Time: 10
Vlan Aging Time
---- ----------
#
07-18-2015 11:06 AM
This could indicate a possible loop some where in the network. I might guess that an end user may have been introducing this (may be a hub or something plugged in). Please check spanning tree for vlan 108 and try to identify what links are blocking. Also have a check on every switch which has vlan 108. Check sh log to see if any abnormality.
** Please rate useful posts**
07-21-2015 08:33 AM
Just checked spanning tree again and nothing is blocked.
We have a 3750 core stack with port channels to 2960 stacks, All of the stacks are only connected to the core 3750 stack.
All of the MAC addresses are linked to users PCs, laptops etc, they do move around the office - different meeting rooms, connect between wire and wireless but we also have the same issues with static thin clients.
Checking the core 3750 logs; most, if not all of the flaps include switch 4 (po14)
Example
Jul 21 15:18:10 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 28d2.xxxx.xxxx in vlan 108 is flapping between port Po14 and port Po13
CSW1#
Po13 -> Stack 3
SW3#sh mac address-table | i 28d2.xxxx.xxxx
108 28d2.xxxx.xxxx DYNAMIC Fa2/0/9
SW3#
Po14 -> Stack 4
SW4#sh mac address-table | i 28d2.xxxx.xxxx
108 28d2.xxxx.xxxx DYNAMIC Po1
SW4#
CS spanning tree
SW1#sh spanning-tree vlan 108
VLAN0108
Spanning tree enabled protocol rstp
Root ID Priority 4204
Address f025.xxxx.xxxx
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 4204 (priority 4096 sys-id-ext 108)
Address f025.xxxx.xxxx
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Po1 Desg FWD 3 128.488 P2p
Po2 Desg FWD 3 128.496 P2p
Po11 Desg FWD 3 128.568 P2p Peer(STP)
Po12 Desg FWD 3 128.576 P2p Peer(STP)
Po13 Desg FWD 3 128.584 P2p Peer(STP)
Po14 Desg FWD 3 128.592 P2p Peer(STP)
Po41 Desg FWD 3 128.808 P2p
SW3 spanning tree
SW3#sh spanning-tree vlan 108
VLAN0108
Spanning tree enabled protocol ieee
Root ID Priority 4204
Address f025.xxxx.xxxx
Cost 3
Port 584 (Port-channel13)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32876 (priority 32768 sys-id-ext 108)
Address 0027.xxxx.xxxx
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa1/0/1 Desg FWD 19 128.3 P2p Edge
Fa1/0/9 Desg FWD 100 128.11 P2p Edge
Fa1/0/10 Desg FWD 19 128.12 P2p Edge
Fa1/0/11 Desg FWD 19 128.13 P2p Edge
Fa1/0/14 Desg FWD 100 128.16 Shr Edge
Fa1/0/16 Desg FWD 19 128.18 P2p Edge
Fa1/0/18 Desg FWD 19 128.20 P2p Edge
Fa1/0/19 Desg FWD 19 128.21 P2p Edge
Fa1/0/21 Desg FWD 19 128.23 P2p Edge
Fa1/0/22 Desg FWD 19 128.24 P2p Edge
Fa1/0/23 Desg FWD 19 128.25 P2p Edge
Fa1/0/25 Desg FWD 19 128.29 P2p Edge
Fa1/0/26 Desg FWD 19 128.30 P2p Edge
Fa1/0/27 Desg FWD 19 128.31 P2p Edge
Fa1/0/28 Desg FWD 19 128.32 P2p Edge
Fa1/0/29 Desg FWD 19 128.33 P2p Edge
Fa1/0/30 Desg FWD 19 128.34 P2p Edge
Fa1/0/32 Desg FWD 19 128.36 P2p Edge
Fa1/0/33 Desg FWD 19 128.37 P2p Edge
Fa1/0/35 Desg FWD 19 128.39 P2p Edge
Fa1/0/36 Desg FWD 19 128.40 P2p Edge
Fa1/0/37 Desg FWD 19 128.41 P2p Edge
Fa1/0/38 Desg FWD 19 128.42 P2p Edge
Fa1/0/39 Desg FWD 19 128.43 P2p Edge
Fa1/0/40 Desg FWD 19 128.44 P2p Edge
Fa1/0/41 Desg FWD 19 128.45 P2p Edge
Fa1/0/42 Desg FWD 19 128.46 P2p Edge
Fa1/0/43 Desg FWD 19 128.47 P2p Edge
Fa1/0/45 Desg FWD 19 128.49 P2p Edge
Fa1/0/47 Desg FWD 19 128.51 P2p Edge
Fa1/0/48 Desg FWD 19 128.52 P2p Edge
Po13 Root FWD 3 128.584 P2p
Fa2/0/1 Desg FWD 19 128.57 P2p Edge
Fa2/0/4 Desg FWD 19 128.60 P2p Edge
Fa2/0/6 Desg FWD 19 128.62 P2p Edge
Fa2/0/7 Desg FWD 19 128.63 P2p Edge
Fa2/0/8 Desg FWD 100 128.64 P2p Edge
Fa2/0/9 Desg FWD 19 128.65 P2p Edge
Fa2/0/11 Desg FWD 19 128.67 P2p Edge
Fa2/0/12 Desg FWD 19 128.68 P2p Edge
Fa2/0/13 Desg FWD 19 128.69 P2p Edge
Fa2/0/14 Desg FWD 19 128.70 P2p Edge
Fa2/0/15 Desg FWD 19 128.71 P2p Edge
Fa2/0/18 Desg FWD 19 128.74 P2p Edge
Fa2/0/22 Desg FWD 19 128.78 P2p Edge
Fa2/0/24 Desg FWD 19 128.80 P2p Edge
Fa2/0/25 Desg FWD 19 128.83 P2p Edge
Fa2/0/26 Desg FWD 19 128.84 P2p Edge
Fa2/0/27 Desg FWD 19 128.85 P2p Edge
Fa2/0/29 Desg FWD 19 128.87 P2p Edge
Fa2/0/30 Desg FWD 19 128.88 P2p Edge
Fa2/0/31 Desg FWD 19 128.89 P2p Edge
Fa2/0/32 Desg FWD 19 128.90 P2p Edge
Fa2/0/39 Desg FWD 19 128.97 P2p Edge
Fa2/0/40 Desg FWD 19 128.98 P2p Edge
Fa2/0/47 Desg FWD 19 128.105 P2p Edge
SW4 spanning tree
SW4#sh spanning-tree vlan 108
VLAN0108
Spanning tree enabled protocol ieee
Root ID Priority 4204
Address f025.xxxx.xxxx
Cost 3
Port 232 (Port-channel1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32876 (priority 32768 sys-id-ext 108)
Address 34db.xxxx.xxxx
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 10 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/2 Desg FWD 4 128.2 P2p Edge
Gi1/0/3 Desg FWD 19 128.3 P2p Edge
Gi1/0/7 Desg FWD 4 128.7 P2p Edge
Gi1/0/8 Desg FWD 4 128.8 P2p Edge
Gi1/0/13 Desg FWD 19 128.13 P2p Edge
Gi1/0/17 Desg FWD 4 128.17 P2p Edge
Gi1/0/20 Desg FWD 4 128.20 P2p Edge
Gi1/0/21 Desg FWD 4 128.21 P2p Edge
Gi1/0/25 Desg FWD 4 128.25 P2p Edge
Gi1/0/26 Desg FWD 19 128.26 P2p Edge
Gi1/0/29 Desg FWD 19 128.29 P2p Edge
Gi1/0/30 Desg FWD 19 128.30 P2p Edge
Gi1/0/31 Desg FWD 19 128.31 P2p Edge
Gi1/0/33 Desg FWD 100 128.33 P2p Edge
Gi1/0/34 Desg FWD 4 128.34 P2p Edge
Gi1/0/36 Desg FWD 19 128.36 P2p Edge
Gi1/0/37 Desg FWD 4 128.37 P2p Edge
Gi1/0/38 Desg FWD 4 128.38 P2p Edge
Gi1/0/43 Desg FWD 4 128.43 P2p
Gi1/0/44 Desg FWD 4 128.44 P2p
Gi1/0/45 Desg FWD 4 128.45 P2p
Gi1/0/46 Desg FWD 4 128.46 P2p
Po1 Root FWD 3 128.232 P2p
Gi2/0/9 Desg FWD 4 128.65 P2p Edge
Gi2/0/11 Desg FWD 4 128.67 P2p Edge
Gi2/0/12 Desg FWD 19 128.68 P2p Edge
Gi2/0/15 Desg FWD 19 128.71 P2p Edge
Gi2/0/16 Desg FWD 19 128.72 P2p Edge
Gi2/0/17 Desg FWD 19 128.73 P2p Edge
Gi2/0/18 Desg FWD 4 128.74 P2p Edge
Gi2/0/19 Desg FWD 19 128.75 P2p Edge
Gi2/0/21 Desg FWD 19 128.77 P2p Edge
Gi2/0/22 Desg FWD 19 128.78 P2p Edge
Gi2/0/23 Desg FWD 19 128.79 P2p Edge
Gi2/0/24 Desg FWD 19 128.80 P2p Edge
Gi2/0/25 Desg FWD 4 128.81 P2p Edge
Gi2/0/27 Desg FWD 19 128.83 P2p Edge
Gi2/0/28 Desg FWD 19 128.84 P2p Edge
Gi2/0/32 Desg FWD 19 128.88 P2p Edge
Gi2/0/33 Desg FWD 19 128.89 P2p Edge
Gi2/0/35 Desg FWD 19 128.91 P2p Edge
Gi2/0/36 Desg FWD 19 128.92 P2p Edge
Gi2/0/37 Desg FWD 19 128.93 P2p Edge
Gi2/0/39 Desg FWD 19 128.95 P2p Edge
Gi2/0/40 Desg FWD 19 128.96 P2p Edge
Gi2/0/43 Desg FWD 4 128.99 P2p
Gi2/0/44 Desg FWD 4 128.100 P2p
Gi2/0/45 Desg FWD 4 128.101 P2p
Gi2/0/46 Desg FWD 4 128.102 P2p
07-21-2015 09:00 AM
If the users move around office on wireless it is expected. Can you identify couple of static think client and check there is no cabling loops or anything. And how frequent is the flapping for static machines? Do these machines complain? Also any service issue due to this logs?
You may see this flaps for wireless clients as they move around. If you don' want to see these messages, configure "no mac address-table notification mac move"
Thanks,
Madhu
07-22-2015 02:33 AM
I am not so sure if it is users moving around the office now, as it happened overnight
CSW1#sh log | i flap
Jul 21 16:37:34 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 000e.xxxx.xxx1 in vlan 108 is flapping between port Po14 and port Po13
Jul 21 16:37:41 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 000e.xxxx.xxx1 in vlan 108 is flapping between port Po14 and port Po13
Jul 21 17:41:39 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 3c97.xxxx.xxx2 in vlan 108 is flapping between port Po14 and port Po12
Jul 21 19:29:24 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 68f7.xxxx.xxx3 in vlan 108 is flapping between port Po14 and port Po11
Jul 21 20:54:18 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 685b.xxxx.xxx4 in vlan 108 is flapping between port Po14 and port Po12
Jul 21 21:01:35 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 68f7.xxxx.xxx3 in vlan 108 is flapping between port Po14 and port Po11
Jul 21 21:14:41 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 28d2.xxxx.xxx5 in vlan 108 is flapping between port Po14 and port Po12
Jul 22 02:16:39 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 8434.xxxx.xxx6 in vlan 108 is flapping between port Po14 and port Po12
Jul 22 02:17:10 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 28d2.xxxx.xxx7 in vlan 108 is flapping between port Po14 and port Po13
Jul 22 02:17:16 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 68f7.xxxx.xxx8 in vlan 108 is flapping between port Po11 and port Po14
Jul 22 02:23:34 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 8434.xxxx.xxx6 in vlan 108 is flapping between port Po14 and port Po12
Jul 22 02:30:01 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 18a9.xxxx.xxx9 in vlan 108 is flapping between port Po14 and port Po12
Jul 22 02:32:49 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 18a9.xxxx.xxx9 in vlan 108 is flapping between port Po14 and port Po12
Jul 22 04:47:08 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 8434.xxxx.xxx6 in vlan 108 is flapping between port Po14 and port Po12
Jul 22 06:17:22 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 68f7.xxxx.xx10 in vlan 108 is flapping between port Po14 and port Po12
Jul 22 06:30:09 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 88ae.xxxx.xx11 in vlan 108 is flapping between port Po14 and port Po11
Jul 22 06:30:15 UTC: %SW_MATM-4-MACFLAP_NOTIF: Host 3c97.xxxx.xxx2 in vlan 108 is flapping between port Po14 and port Po12
CSW1#
Port channel 14 is in most of the logs, This is only connected to the core switch via the port channel.
Cabling has not changed for a while and this is a recent issue. The only recent change was the IOS upgrade to c2960s-universalk9-mz.150-2.SE8.bin.
09-21-2015 07:46 AM
Taggart,
I have the same issue, and I am also using a 2960-48 port switch with the same IOS version c2960-lanbasek9-mz.150-2.SE8.bin
I am suspecting it's an IOS flaw after reading your post. My loop activates when configuring "switchport trunk native vlan 99" on my trunks. But when I switch it back to Vlan 1, the loop ceases. In addition, I can stop the loop by shutting down all unused interfaces.
Have you found a resolution yet?
09-22-2015 01:50 AM
Hi Swillet
Yesterday I checked the logs and it has not appeared recently. Checked again today and it is back
Not sure if it is relivent but I am also using vlan 99 however it is not native. It is used for the uplink to the private network.
Thanks
09-22-2015 08:35 AM
Taggart,
I don't think its VLan 99 exclusively since I changed to a random vlan and had the issue still.
Have you considered installing a different version of your IOS?
11-27-2015 01:20 AM
Hi Taggart2004,
Please chk this:
https://tools.cisco.com/bugsearch/bug/CSCuu69332/?reffering_site=dumpcr
I was also facing the same issue. After applying the work-around it stopped.
Please let me know if this helps.
Regards,
Tripati
02-23-2018 12:51 PM
Hi Taggart2004,
Hope you are doing well.
Im sure by now this has been resolved. May I please know how?
Thank you.
Alen
05-17-2020 08:01 AM
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