I have a problem with a host whitch is connected to 11 port of my cisco 3560. from time to time the, the connection is lost with the host and after some troubleshooting i see two entries of mac-address table for the port 11.
I'm asking if someone has an idee how to explain this issue and how to see if this port is participing to SPT or...
I see also somme error of collision :
5 minute input rate 1000 bits/sec, 2 packets/sec
5 minute output rate 7000 bits/sec, 1 packets/sec
64677029 packets input, 17167881111 bytes, 0 no buffer
Received 39036768 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 39036088 multicast, 0 pause input
0 input packets with dribble condition detected
54722071 packets output, 8588329003 bytes, 0 underruns
0 output errors, 992 collisions, 1 interface resets
0 babbles, 2316 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
i have two routers in the same switch: my wan router + un other router used to conneced some separated hosts to internet.
If i use statif addressing for the second subnet (2 hosts + internet router), is there any risk for collision or broadcast domains or errors ?
is the second router distrub my LAN or WAN ?
Manay thanks for your help and support.
You can issue commands like "show interface status" and "show spanning-tree vlan ". In the output of "show interface status" command, you will see if the interface is configured and acting as a trunk. Also, in the output of "show spanning-tree vlan " command, if the port says that it is connected to an edge device, that means most likely you are connected to another switch that participates in the Spanning-tree. You can also issue "show cdp neighbor" to see if the device is another Cisco Switch.
While you can connect two different subnets in the same VLAN, it is not recommended. One of the issues you could see is excessive broadcasts. But, operationally, they will still work.
Hope this helps.