User Manual
Table Of Contents
- Intended Readers
- Icons for Note, Caution, and Warning
- I. Product Overview
- I-1 . Product Brief Description
- I-2. Product Specification
- I-3. Hardware Description
- I-4. DIN-Rail Mounting
- /I-5. Console Connection
- The Console port is for local management by using a terminal emulator or a computer with terminal emulation software.
- DB9 connector connect to computer COM port
- Baud rate: 115200bps
- 8 data bits, 1 stop bit
- None Priority
- None flow control
- I-6. Connecting Cable
- II. Preparing for Management
- III. Web Management
- III-1. Web Management - Overview
- III-2. Web Management – Basic Settings
- III-3. Web Management – Redundancy
- III-4. Web Management – Management
- III-5. Web Management – L2 Switching
- III-6. Web Management – Security
- III-7. Web Management – Diagnostics
- III-8. Web Management – Monitoring
- III-9. Web Management – MAC Table
- III-10. Web Management – Maintenance
- Appendix A: IP Configuration for Your PC
- Appendix B: CLI Command Reference
- Revision History
- Federal Communication Commission Interference Statement
- R&TTE Compliance Statement
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III-5-3. L2 SWITCHING – 802.1Q VLAN
802.1Q VLAN
Virtual Local Area Network (VLAN) is a structure that can ease Network planning. The devices in a VLAN
can be located anywhere without the restriction of physical connections, but work like they are on the
same physical segment.
IEEE 802.1Q defines VLAN tagging conception for the Ethernet frames. VLAN tagging supports frames in
the different VLAN groups transmitting on a link (called VLAN trunk). The maximum number of VLANs
on the Ethernet network is 4096. The VLAN 0 and VLAN 4095are for specific use and hence the usable
VLAN number is 4094.
VLAN Q-in-Q
VLAN Q-in-Q, also called Stacked VLAN, is an extension for 802.1Q VLAN. It supports a maximum of
4096*4096 VLAN groups. VLAN Q-in-Q can apply a port to a provider, customer, or tunnel for different
applications. The header of the stacked VLAN frame contains two 802.1Q Headers with different
Ethertype (TPID). The TPID “0x88A8” is the outer tag by default and the TPID “0x8100” is the inner tag
for 802.1Q VLAN. Customized ethertype called Specific Provider Ethertype are supported if one or more
ports are set to “Specific Provider”.