Hi,
We have e problem with our network. For a couple of months we have a strange problem causing by Motorola Canopy SM of our clients. On some switches (Cisco 3550) it appear a lot of flapping, on receptive SM’s vlans. Why is this happen? This problem happen only with SM clients not with APs or CMMs. Is that a loop connection that comes from our clients? Or a problem communications between Cisco vs Canopy.
Is there any solution for this issue?
To be clear, SMs are without NAT. Software version is 9.5
All equipments are in different manage-vlans, to be able to reach them in case of problems.
pls, help me.
thnx
try forcing the link speed/duplex on the SM and the Switch. We’ve had problems before with Ciscos not working with auto negotiation with the SM’s
Ok i’ll try.
To be sure, need to change duplex/speed of ports between CMM-Switch, SMs are connected via AP->CMM->Switch.
thanks
Can you try clarifying what you mean? It sounded before like you have 3550s connected directly to PMP100 SMs. Do you mean you are seeing problems with customer VLANs on the switch at your tower?
salad wrote: Can you try clarifying what you mean? It sounded before like you have 3550s connected directly to PMP100 SMs. Do you mean you are seeing problems with customer VLANs on the switch at your tower?
The topology is this:
One of our switch Cisco 3550 has the Uplink = Gi1/0, CMM = Fa0/2. We have flapping between these ports. Our CMM has 4 AP, each AP has 15-30 SM. We can see that mac-addresses in flapping does not belong neither APs, SMs or CMM. These are mac-addresses of clients behind SM. Here is a fragment of the logg:
Oct 20 09:26:41.079: %SW_MATM-4-MACFLAP_NOTIF: Host 0025.2201.cacc in vlan 161 is flapping between port Fa0/2 and port Gi1/0
Oct 20 09:35:03.585: %SW_MATM-4-MACFLAP_NOTIF: Host 00a2.3050.a690 in vlan 161 is flapping between port Fa0/2 and port Gi1/0
Oct 20 09:35:16.537: %SW_MATM-4-MACFLAP_NOTIF: Host 00e5.4250.a203 in vlan 161 is flapping between port Fa0/2
and port Gi1/0
Oct 20 09:39:18.583: %SW_MATM-4-MACFLAP_NOTIF: Host 0025.11ae.d157 in vlan 161 is flapping between port Fa0/2
and port Gi1/0
Oct 20 09:41:35.536: %SW_MATM-4-MACFLAP_NOTIF: Host 0025.11ae.d157 in vlan 161 is flapping between port Fa0/2 and port Gi1/0
Oct 20 09:42:28.150: %SW_MATM-4-MACFLAP_NOTIF: Host 0025.2201.cacc in vlan 161 is flapping between port Fa0/2 and port Gi1/0
Oct 20 09:42:40.120: %SW_MATM-4-MACFLAP_NOTIF: Host 904c.e582.a7bf in vlan 161 is flapping between port Fa0/2 and port Gi1/0
Thanks
Are the SMs themselves switching between APs with similar color codes? Is there somehow a secondary backhaul running into the CMM?
salad wrote: Are the SMs themselves switching between APs with similar color codes? Is there somehow a secondary backhaul running into the CMM?
Yes, SMs has color codes, same as APs. No secondary BH.
nucoles wrote: check out this post https://supportforums.cisco.com/thread/165163
That was the first post, I found searching in Google.
In any case thanks