Table of Contents
Advertisement
17 VLANs
17.5.3 Protocol ports and trunk ports
Protocol ports identify the protocol for untagged frames. Ports used as protocol VLANs set
a protocol port. Different VLANs over multiple protocols can be assigned to a protocol port.
Trunk ports are used to connect multiple protocol VLANs to another LAN switch. Note that
because trunk ports distinguish VLANs by their VLAN tag, they do not distinguish according
to protocol.
17.5.4 Native VLANs for protocol ports
When a frame with a protocol that does not match the configuration is received on a
protocol port, it is handled by the native VLAN. The native VLAN is VLAN 1 (the default
VLAN) unless otherwise specified in the configuration. It can also be changed to another
port VLAN.
The figure below shows an example of a configuration in which the native VLAN is used for
the protocol port. In this configuration, the IPX protocol is used for a single VLAN over the
entire network, and other protocols such as IPv4 are split by VLAN for the port VLAN.
VLAN A and VLAN B are set as the native VLAN for each port. Note that in this example
configuration, both VLAN A and VLAN B can be set as IPv4 protocol VLANs.
Figure 17-7 Example configuration using the native VLAN for the protocol port
266
Advertisement
Table of Contents
