
Chapter 4: Web-Based Management
GE-DS-242-PoE Managed Ethernet Switch User Manual
61
Understanding the nomenclature of the Switch
•
IEEE 802.1Q Tagged and Untagged
Every port on an 802.1Q compliant switch can be configured as tagged or untagged.
Tagged
Ports with tagging enabled will put the VID number, priority and other VLAN
information into the header of all packets that flow into those ports. If a packet has
previously been tagged, the port will not alter the packet, thus keeping the VLAN
information intact. The VLAN information in the tag can then be used by other 802.1Q
compliant devices on the network to make packet-forwarding decisions.
Untagged
Ports with untagging enabled will strip the 802.1Q tag from all packets that flow into
those ports. If the packet doesn't have an 802.1Q VLAN tag, the port will not alter the
packet. Thus, all packets received by and forwarded by an untagging port will have no
802.1Q VLAN information. (Remember that the PVID is only used internally within the
Switch). Untagging is used to send packets from an 802.1Q-compliant network device
to a non-compliant network device.
Frame Income
Frame Leave
Income Frame is
tagged
Income Frame is
untagged
Leave port is tagged
Frame remains tagged
Tag is inserted
Leave port is
untagged
Tag is removed
Frame remain untagged
VLAN Group Configuration
•
VLAN Group Configuration
Figure 4-27: VLAN Group Configuration interface
Summary of Contents for GE-DS-242-POE
Page 1: ...GE Security P N 1069174 REV 1 0 ISS 22FEB10 GE DS 242 PoE Managed Ethernet Switch User Manual ...
Page 14: ...Chapter 1 Introduction 10 GE DS 242 PoE Managed Ethernet Switch User Manual ...
Page 124: ...Chapter 4 Web Based Management 120 GE DS 242 PoE Managed Ethernet Switch User Manual ...
Page 130: ...Chapter 5 Console Management 126 GE DS 242 PoE Managed Ethernet Switch User Manual ...
Page 204: ...Chapter 8 Power Over Ethernet Overview 200 GE DS 242 PoE Managed Ethernet Switch User Manual ...
Page 210: ......