User`s guide
Table Of Contents
- User’s Guide
- Introduction and Hardware
- Basic Configuration
- Advanced
- VLAN
- Static MAC Forward Setup
- Filtering
- Spanning Tree Protocol
- 11.1 STP/RSTP Overview
- 11.1.1 STP Terminology
- 11.1.2 How STP Works
- 11.1.3 STP Port States
- 11.1.4 Multiple RSTP
- 11.2 Spanning Tree Protocol Main Screen
- 11.3 Configure Rapid Spanning Tree Protocol
- 11.4 Rapid Spanning Tree Protocol Status
- 11.5 Configure Multiple Rapid Spanning Tree Protocol
- 11.6 Multiple Rapid Spanning Tree Protocol Status
- Bandwidth Control
- Broadcast Storm Control
- Mirroring
- Link Aggregation
- Port Authentication
- Port Security
- Classifier
- Policy Rule
- Queuing Method
- VLAN Stacking
- Multicast
- 22.1 Multicast Overview
- 22.1.1 IP Multicast Addresses
- 22.1.2 IGMP Filtering
- 22.1.3 IGMP Snooping
- 22.2 Multicast Status
- 22.3 Multicast Setting
- 22.4 IGMP Filtering Profile
- 22.5 MVR Overview
- 22.5.1 Types of MVR Ports
- 22.5.2 MVR Modes
- 22.5.3 How MVR Works
- 22.6 General MVR Configuration
- 22.7 MVR Group Configuration
- 22.7.1 MVR Configuration Example
- IP Application
- Management
- Maintenance
- 28.1 The Maintenance Screen
- 28.2 Firmware Upgrade
- 28.3 Restore a Configuration File
- 28.4 Backup a Configuration File
- 28.5 Load Factory Default
- 28.6 Save Configuration
- 28.7 Reboot System
- 28.8 FTP Command Line
- 28.8.1 Filename Conventions
- 28.8.2 FTP Command Line Procedure
- 28.8.3 GUI-based FTP Clients
- 28.8.4 FTP Restrictions
- Access Control
- 29.1 Access Control Overview
- 29.2 The Access Control Main Screen
- 29.3 About SNMP
- 29.3.1 Supported MIBs
- 29.3.2 SNMP Traps
- 29.3.3 Configuring SNMP
- 29.4 SSH Overview
- 29.5 How SSH works
- 29.6 SSH Implementation on the Switch
- 29.6.1 Requirements for Using SSH
- 29.7 Introduction to HTTPS
- 29.8 HTTPS Example
- 29.8.1 Internet Explorer Warning Messages
- 29.8.2 Netscape Navigator Warning Messages
- 29.8.3 The Main Screen
- 29.9 Service Port Access Control
- 29.10 Remote Management
- Diagnostic
- Syslog
- Cluster Management
- MAC Table
- IP Table
- ARP Table
- Routing Table
- Configure Clone
- Maintenance
- CLI and Troubleshooting
- Introducing Commands
- 38.1 Overview
- 38.2 Accessing the CLI
- 38.2.1 The Console Port
- 38.3 The Login Screen
- 38.4 Command Syntax Conventions
- 38.5 Changing the Password
- 38.6 Privilege Levels
- 38.7 Command Modes
- 38.8 Getting Help
- 38.8.1 List of Available Commands
- 38.9 Using Command History
- 38.10 Saving Your Configuration
- 38.10.1 Configuration File
- 38.10.2 Logging Out
- 38.11 Command Summary
- 38.11.1 User Mode
- 38.11.2 Enable Mode
- 38.11.3 General Configuration Mode
- 38.11.4 interface port-channel Commands
- 38.11.5 interface route-domain Commands
- 38.11.6 config-vlan Commands
- 38.12 mvr Commands
- User and Enable Mode Commands
- 39.1 Overview
- 39.2 show Commands
- 39.2.1 show system-information
- 39.2.2 show ip
- 39.2.3 show logging
- 39.2.4 show interface
- 39.2.5 show mac address-table
- 39.3 ping
- 39.4 traceroute
- 39.5 Copy Port Attributes
- 39.6 Configuration File Maintenance
- 39.6.1 Using a Different Configuration File
- 39.6.2 Resetting to the Factory Default
- Configuration Mode Commands
- 40.1 Change the Out of Band Management IP Address
- 40.2 Enabling IGMP Snooping
- 40.3 Configure IGMP Filter
- 40.4 Enabling STP
- 40.5 no Command Examples
- 40.5.1 Disable Commands
- 40.5.2 Resetting Commands
- 40.5.3 Re-enable commands
- 40.5.4 Other Examples of no Commands
- 40.6 Static Route Commands
- 40.7 Enabling MAC Filtering
- 40.8 Enabling Trunking
- 40.9 Enabling Port Authentication
- 40.9.1 RADIUS Server Settings
- 40.9.2 Port Authentication Settings
- Interface Commands
- 41.1 Overview
- 41.2 Interface Command Examples
- 41.2.1 interface port-channel
- 41.2.2 bpdu-control
- 41.2.3 broadcast-limit
- 41.2.4 bandwidth-limit
- 41.2.5 mirror
- 41.2.6 gvrp
- 41.2.7 ingress-check
- 41.2.8 frame-type
- 41.2.9 weight
- 41.2.10 egress set
- 41.2.11 qos priority
- 41.2.12 name
- 41.2.13 speed-duplex
- 41.2.14 test
- 41.3 Interface no Command Examples
- 41.3.1 no bandwidth-limit
- IEEE 802.1Q Tagged VLAN Commands
- 42.1 Configuring Tagged VLAN
- 42.2 Global VLAN1Q Tagged VLAN Configuration Commands
- 42.2.1 GARP Status
- 42.2.2 GARP Timer
- 42.2.3 GVRP Timer
- 42.2.4 Enable GVRP
- 42.2.5 Disable GVRP
- 42.3 Port VLAN Commands
- 42.3.1 Set Port VID
- 42.3.2 Set Acceptable Frame Type
- 42.3.3 Enable or Disable Port GVRP
- 42.3.4 Modify Static VLAN
- 42.3.5 Delete VLAN ID
- 42.4 Enable VLAN
- 42.5 Disable VLAN
- 42.6 Show VLAN Setting
- Multicast VLAN Registration Commands
- Routing Domain Command Examples
- Troubleshooting
- Introducing Commands
- Appendices and Index
Chapter 21 VLAN Stacking
GS-2724 User’s Guide
149
21.3 VLAN Tag Format
A VLAN tag (service provider VLAN stacking or customer IEEE 802.1Q) consists of the
following three fields.
Type is a standard Ethernet type code identifying the frame and indicates that whether the
frame carries IEEE 802.1Q tag information. SP TPID (Service Provider Tag Protocol
Identifier) is the service provider VLAN stacking tag type. Many vendors use 0x8100 or
0x9100.
TPID (Tag Protocol Identifier) is the customer IEEE 802.1Q tag.
• If the VLAN stacking port role is Access Port, then the Switch adds the SP TPID tag to
all incoming frames on the service provider's edge devices (1 and 2 in the VLAN stacking
example figure).
• If the VLAN stacking port role is Tunnel Port, then the Switch only adds the SP TPID
tag to all incoming frames on the service provider's edge devices (1 and 2 in the VLAN
stacking example figure) that have an SP TPID different to the one configured on the
Switch. (If an incoming frame’s SP TPID is the same as the one configured on the Switch,
then the Switch will not add the tag.)
Priority refers to the IEEE 802.1p standard that allows the service provider to prioritize traffic
based on the class of service (CoS) the customer has paid for.
• On the Switch, configure priority level of inner IEEE 802.1Q tag in the Port Setup screen.
• "0" is the lowest priority level and "7" is the highest.
VID is the VLAN ID. SP VID is the VID for the second (service provider’s) VLAN tag.
21.3.1 Frame Format
The frame format for an untagged Ethernet frame, a single-tagged 802.1Q frame (customer)
and a “double-tagged” 802.1Q frame (service provider) is shown next.
Configure the fields as circled in the Switch’s VLAN Stacking screen.
Table 47 VLAN Tag Format
Type Priority VID
Table 48 Single and Double Tagged 802.11Q Frame Format
DA SA Len/
Etype
Data FCS Untagged
Ethernet frame
DA SA TPID Priorit
y
VID Len/
Etype
Data FCS
IEEE 802.1Q
customer
tagged frame
DA SA SPTPI
D
Priority VID TPID Priorit
y
VID Len/
Etype
Data FCS
Double-tagged
frame
Table 49 802.1Q Frame
DA Destination Address Priority 802.1p Priority
SA Source Address Len/
Etype
Length and type of Ethernet frame
(SP)TPID (Service Provider) Tag Protocol IDentifier Data Frame data
VID VLAN ID FCS Frame Check Sequence