I am attempting to configure a 3Com 3300 Switch with a Layer 3 Module installed in order to provide some network traffic management. Want to setup VLANs and change IP Subnets in the process. All subnets will be setup using the 10.0.0.0 network with subnet 255.255.255.0. (must leave current IP subnet 192.168.0.0 in place for main office temporarily) The equipment setup is as follows for my testing environment.
3300 Switch w/module installed
Connected to current network via cross connect patch cable
Connected to Layer 2, 3300 Switch via cross connect on port 6
Static IP: 192.168.0.7
Mask: 255.255.255.0
Gateway: 192.168.0.1
VLANs configured:
VLAN1 (default) all ports belong except port 6
VLAN2 (index 2) port 6 (no tagging)Layer 3 Module
Static IP: 192.168.0.8
Mask: 255.255.255.0
Gateway: 192.168.0.1
VLANs Configured
AN Index VLAN ID Name
1 1 Default VLAN
2 2 VLAN 2
IP Interface configuration
Index Type IP Address Subnet Mask State VLAN Index
Index Type Address subnet mask state Vlan index
1 VLAN 192.168.0.8 255.255.255.0 Up 1
2 VLAN 10.0.9.1 255.255.255.0 Up 2
RIP enabled, IP Routing Table shows default +:
Destination Subnet Mask Metric Gateway Status
10.0.9.0 255.255.255.0 — — Direct
10.0.9.1 255.255.255.255 — — Local
192.168.0.0 255.255.255.0 — — Direct
192.168.0.8 255.255.255.255 — — Local
Layer 2 3300 Switch
Connected Layer 3 switch via cross connect patch cable on port 1
Static IP: 10.0.9.2
Mask: 255.255.255.0Gateway: 10.0.9.1
VLANs configured:
VLAN1 (default) all ports belong except port 1
VLAN2 (index 2) port 1 (802.1Q tagging)
For some unknown reason, this configuration worked for about 10 minutes. I was able to ping both 10.0.9.1 and 10.0.9.2 from a machine connected to the current network. Then it quit working? and I can?t seem to figure out why. Anyone with experience in configuring layer 3 please comment!