Lucent Technologies P550 - Manual (Page 223)

Cajun P550/P220 Switch Operation Guide 12-1
12
Using VLANs, Spanning Tree,
and Hunt Groups (Layer 2 and
Layer 3)
Overview
This chapter and its procedures are common to both Layer 2 and Layer 3 configuration.
Included in this chapter:
❒ VLAN Operation
❒ Creating and Implementing VLANs
❒ Using Spanning Tree Setup and Monitoring
❒ Using Hunt Groups to Aggregate Bandwidth between Switches
VLAN Operation
VLAN operation is based on three sets of rules:
❒ Ingress Rules
❒ Forwarding Rules
❒ Egress Rules
Ingress Rules
Every frame received by the switch is classified to one VLAN. There are two ways in
which frames are classified to VLANs:
❒ Untagged frames are classified to the VLAN associated with the port on which the
frame is received (Port-based VLANs).
❒ Tagged frames are classified to the VLAN identified by the VLAN tag in the tag
header of the frame.