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Hi again to everybody... I have another problem with 3com switch (2928 sfp) Switch n.1 (2928) : 2 Vlans: 200 tagged and PVID for port 1-8, 25 (fiber) (192.168.2.0) 400 tagged and PVID for port 24, 26 (fiber) (192.168.4.0) No Vlan-interface Switch n.2 (2928): 2 Vlans: 100 tagged and PVID for port 1-8 (192.168.1.1) 400 tagged and PVID for port 10, 25 (fiber) (192.168.4.0) Vlan-interface100 with ip 192.168.1.1 Vlan-interface400 with ip 192.168.4.1 Switch n.3 (2928): 2 Vlans: 100 tagged and PVID for port 17-20 (192.168.1.0) 200 tagged and PVID for port 1-16, 25 (fiber) (192.168.2.0) Vlan-Interface200 with ip 192.168.2.1 The port 25 of switch n.1 is linked to port 25 of switch n.3 The port 26 of switch n.1 is linked to port 25 of switch n.2 Now I can't ping from a client connected to port 10 on switch 2 (vlan 400) to a client connected to port 24 on switch 1 (vlan 400). But if i disconnect the link between port 25 on switch 1 and port 25 on switch 3, the ping works perfectly!!! Why? Insted ping between clients on vlan 200 on switches 1 and 3 works perfectly! Please help me....

Sorry to bel in late but I was sick last 3 days... Tomorrow I solved, the problem was the netgear.... Thanks to all

No, the 2952 doesn't give you the possibility to set the default gateway. The manual doesn't say how to setup the default gateway....

The 2952 hasn't a default gateway in its configuration...

Ok, tomorrow I'll try....

Which default gateway? The switch doesn't have it set by default. In clients which default gateway I have to put? 192.168.2.1 or 192.168.0.3 ?

The ipv4 routing table is some like this: dest address mask next hop interface protocol 0.0.0.0 0.0.0.0 192.168.0.3 static 127.0.0.0 255.0.0.0 127.0.0.1 InLoopback0 direct 127.0.0.1 32 127.0.0.1 InLoopBack0 direct 192.168.2.0 24 192.168.2.1 Vlan-interface200 direct 192.168.2.1 32 127.0.0.1 InLoopBack0 direct 192.168.1.0 24 192.168.1.1 Vlan-interface100 direct 192.168.1.1 32 127.0.0.1 InLoopBack0 direct So, if there isn't a route for the destination address (like 208.67.220.220) the switch should forward the packets to the default route (192.168.0.3) on port 45....but it doesn't work!!!

The 2952 can route packets between vlans on different subnets using vlan-interface. I create for each vlan one vlan-interface on the switch. Infact clients (valn 200 and subnet 192.168.2.0/24) can reach the servers (vlan 100 and subnet 192.168.1.0/24). I have set the default route with next hop 192.168.0.3 (router ip). Because of I'm in testing phase my router is a simple netgear dg834g....

Hi to everybody, first of all I am very sorry for my english.... I have a 3com 2952 on which I configured some vlans: VLAN 200 for ports 1-16 (192.168.2.0/24), Configured Valn-interface with ip 192.168.2.1. In this vlan I have my clients. Each port is untagged for vlans 1,200 and PVID is 200. Link type is Hybrid. VLAN 100 for ports 17-20 (192.168.1.0/24) Configured Vlan-interfaces with ip 192.168.1.1. In this vlan I have my servers. Vlan 1 is the default vlan and management. The switch has ip 192.168.0.2. I have a vlan-interface for vlan 1 and its ip is 192.168.0.2 My internet router has ip 192.168.0.3 and it is connected to the switch on port 45. Port 45 is untagged for vlan 1 and PVID is 1. Link type is hybrid. I have configured a default route in network--->ipv4 routing in the navigation tree in this way: destination ip adress: 0.0.0.0 Mask: 0.0.0.0 Next hop: 192.168.0.3 But my clients (192.168.2.0/24) cannot connect to internet. I cannot ping the router or open dns (208.67.220.220). Can you help me please?