Table of Contents
Advertisement
Chapter 5
Setup and Configuration
•
Section 5.37.5, "Managing Forbidden Ports"
•
Section 5.37.6, "Managing VLANs for HDLC-ETH Connections"
•
Section 5.37.7, "Managing VLANs for Virtual Switches"
•
Section 5.37.8, "Managing VLANs for Routable-Only Ethernet Ports"
Section 5.37.1
VLAN Concepts
The following sections describe some of the concepts important to the implementation of VLANs in
RUGGEDCOM ROX II:
•
Section 5.37.1.1, "Tagged vs. Untagged Frames"
•
Section 5.37.1.2, "Native VLAN"
•
Section 5.37.1.3, "Edge and Trunk Port Types"
•
Section 5.37.1.4, "Ingress and Egress Rules"
•
Section 5.37.1.5, "Forbidden Ports List"
•
Section 5.37.1.6, "VLAN-Aware Mode of Operation"
•
Section 5.37.1.7, "GARP VLAN Registration Protocol (GVRP)"
•
Section 5.37.1.8, "PVLAN Edge"
•
Section 5.37.1.9, "VLAN Advantages"
Section 5.37.1.1
Tagged vs. Untagged Frames
VLAN tags identify frames as part of a VLAN network. When a switch receives a frame with a VLAN (or 802.1Q)
tag, the VLAN identifier (VID) is extracted and the frame is forwarded to other ports on the same VLAN.
When a frame does not contain a VLAN tag, or contains an 802.1p (prioritization) tag that only has prioritization
information and a VID of 0, it is considered an untagged frame.
Section 5.37.1.2
Native VLAN
Each port is assigned a native VLAN number, the Port VLAN ID (PVID). When an untagged frame ingresses a
port, it is associated with the port's native VLAN.
By default, when a switch transmits a frame on the native VLAN, it sends the frame untagged. The switch can be
configured to transmit tagged frames on the native VLAN.
Section 5.37.1.3
Edge and Trunk Port Types
Each port can be configured as an edge or trunk port.
542
RUGGEDCOM ROX II
CLI User Guide
VLAN Concepts
Advertisement
Table of Contents
Troubleshooting
