I need an help to find a problem in my network configuration.
I have a Vodafone Router that manages both IP phones and LAN traffic for PC.
Original configuration had one switch SG200 and I had to had another unit because I had not enough LAN ports.
When I added it I called the support and the technician told me that I just had to add only the Vlan setting to let the IP phone connect correctly.
create Vlan 20
Port to Vlan (VLAN ID select 20) GO and tag all the ports
I also set the IP address of the switch
first one is 10.10.9.110
new second one is 10.10.9.111
I cleared the arp tables but still I cannot ping some IP or communication suddenly drops and restart.
Sometimes it happens that one PC goes offline and I cannot ping some hosts.
Sorry, I am not an expert of network configurations but I cannot find anyone that can help me.
I noticed these errors:
|2147483298||2013-Jun-08 13:29:28||Informational||%LINK-I-Up: gi3, aggregated (1)|
|2147483299||2013-Jun-08 13:29:25||Warning||%LINK-W-Down: gi3, aggregated (1)|
|2147483300||2013-Jun-08 13:29:22||Warning||%STP-W-PORTSTATUS: gi3: STP status Forwarding|
|2147483301||2013-Jun-08 13:29:17||Informational||%LINK-I-Up: gi3|
|2147483302||2013-Jun-08 13:29:11||Warning||%LINK-W-Down: gi3|
|2147483303||2013-Jun-08 13:18:50||Warning||%STP-W-PORTSTATUS: gi3: STP status Forwarding|
|2147483304||2013-Jun-08 13:18:46||Informational||%LINK-I-Up: gi3|
|2147483305||2013-Jun-08 12:02:32||Warning||%STP-W-PORTSTATUS: gi8: STP status Forwarding, aggregated (1)|
|2147483306||2013-Jun-08 12:02:27||Informational||%LINK-I-Up: gi8, aggregated (1)|
|2147483307||2013-Jun-08 12:02:24||Warning||%LINK-W-Down: gi8|
|2147483308||2013-Jun-08 12:02:08||Warning||%STP-W-PORTSTATUS: gi8: STP status Forwarding|
|2147483309||2013-Jun-08 12:02:03||Informational||%LINK-I-Up: gi8|
|2147483310||2013-Jun-08 11:52:44||Warning||%STP-W-PORTSTATUS: gi7: STP status Forwarding, aggregated (1)|
|2147483311||2013-Jun-08 11:52:39||Informational||%LINK-I-Up: gi7, aggregated (1)|
|2147483312||2013-Jun-08 11:52:37||Warning||%LINK-W-Down: gi7, aggregated (1)|
|2147483313||2013-Jun-08 11:52:11||Warning||%STP-W-PORTSTATUS: gi7: STP status Forwarding|
|2147483314||2013-Jun-08 11:52:06||Informational||%LINK-I-Up: gi7|
|2147483315||2013-Jun-08 11:52:04||Warning||%LINK-W-Down: gi7|
|2147483316||2013-Jun-07 21:29:24||Warning||%LINK-W-Down: gi3|
|2147483317||2013-Jun-07 21:26:10||Warning||%LINK-W-Down: gi8, aggregated (1)|
|2147483318||2013-Jun-07 21:26:06||Informational||%LINK-I-Up: gi8|
|2147483319||2013-Jun-07 21:26:04||Warning||%LINK-W-Down: gi8|
|2147483320||2013-Jun-07 15:54:28||Warning||%STP-W-PORTSTATUS: gi7: STP status Forwarding|
|2147483321||2013-Jun-07 15:54:23||Informational||%LINK-I-Up: gi7|
|2147483322||2013-Jun-07 15:54:19||Warning||%LINK-W-Down: gi7|
|2147483323||2013-Jun-07 12:16:00||Warning||%STP-W-PORTSTATUS: gi3: STP status Forwarding, aggregated (1)|
|2147483324||2013-Jun-07 12:15:55||Informational||%LINK-I-Up: gi3, aggregated (1)|
|2147483325||2013-Jun-07 12:15:52||Warning||%LINK-W-Down: gi3, aggregated (1)|
|2147483326||2013-Jun-07 12:15:48||Warning||%STP-W-PORTSTATUS: gi3: STP status Forwarding|
|2147483327||2013-Jun-07 12:15:43||Informational||%LINK-I-Up: gi3, aggregated (1)|
so you now have two SG200 switches connected to the Vodafone router ? Or do you have the switches connected back to back (one behind the other) ? What model is your Vodafone router ?
the easiest way to resolve this is probably by using one of the built in smartport macros. If you have only an IP Phone connected, use the 'ip_phone' macro. If you also have a desktop connected to a port, use the 'ip_phone_desktop' macro.
Check page 155 of the attached user guide for instructions how to apply the feature: