User's Manual

528 CHAPTER 13: VLAN MANAGEMENT
Figure 276 VLAN Routing Dialog Box
The Router name field lists all of the routers that 3Com Network Director
has determined are performing IP routing for the currently selected VLAN.
The table below this field is context-sensitive: when the selected router
changes, the table displays all of the IP interfaces defined on the router
for the current VLAN.
In some situations the VLAN Routing button will be disabled for a VLAN:
■ If the VLAN is a non-IP protocol-based VLAN. The VLAN Routing
button only relates to IP routing.
■ If the VLAN is being routed by a non-3Com Layer 3 switch. 3Com
Network Director does not discover VLANs configured on non-3Com
switches.
■ If the VLAN membership inference has for some reason not inferred all
the members of the VLAN correctly. See “
Incorrect VLAN membership
inference” on page 570 for reasons why this could happen.