User`s guide

Chapter 4: Examples
4-4 DIGITAL MultiSwitch 700 Port Based VLAN User’s Guide
3. Once the frame is classified, its destination MAC address is examined.
The switch discovers that the frame is a broadcast, and treats it as it
would any other unknown destination MAC address. The switch
forwards the frame out all ports in the Red VLAN’s Forwarding List.
In this case, the frame is sent to Interfaces 2 and 3.
The second frame is a unicast, where station R2 responds to station R1’s
broadcast.
4. Station R2, having received the broadcast from R1 and recognized it,
transmits a unicast frame as a response. The switch receives this frame
on Interface 2. The switch classifies this new untagged frame as
belonging to the Red VLAN.
5. The switch adds the source MAC address and VLAN for station R2 to
its Source Address Table, and checks the Source Address Table for the
destination MAC address given in the frame. The switch finds the
MAC address and VLAN in this table, and recognizes that the MAC
address and VLAN match for R1 is located out Interface 1.
6. The switch examines the Egress List for interface 1 and determines
that the port is configured to forward untagged frames classified into
the Red VLAN. The switch transmits the frame with no VLAN tag
header.
7. The switch forwards the frame out Interface 1. Any other unicast
transmissions between stations R1 and R2 will be handled identically.
4.2 EXAMPLE 2
This second example investigates the steps that must be taken to set up
VLANs across multiple port based VLAN switches. This includes the
configuration and operation of 1Q Trunks between port based VLAN
switches.