VES-1616F/1624F-44 User’s Guide
Chapter 21 VLAN Stacking
153
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
, 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
VLAN Stacking
screen.
Table 59
Single and Double Tagged 802.11Q Frame Format
DA
SA
Len/Etype Data
FCS Untagged
Ethernet frame
DA
SA
TPID Priority VID
Len/Etype Data
FCS IEEE 802.1Q
customer
tagged frame
DA SA
SPTPID Priority VID
TPID Priority VID
Len/Etype Data
FCS Double-tagged
frame
Table 60
IEEE 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
Содержание VES-1616F-44
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Страница 9: ...VES 1616F 1624F 44 User s Guide 8 Customer Support...
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Страница 35: ...VES 1616F 1624F 44 User s Guide 34 Chapter 1 Getting to Know Your Switch Figure 2 Curbside Application...
Страница 53: ...VES 1616F 1624F 44 User s Guide 52 Chapter 4 The Web Configurator...
Страница 63: ...VES 1616F 1624F 44 User s Guide 62 Chapter 5 System Status and Port Statistics...
Страница 87: ...VES 1616F 1624F 44 User s Guide 86 Chapter 7 VLAN Figure 35 VLAN Static VLAN Port Isolation Setup All Connected...
Страница 90: ...VES 1616F 1624F 44 User s Guide Chapter 7 VLAN 89 Figure 37 Port Based VLAN Setup All Connected...
Страница 93: ...VES 1616F 1624F 44 User s Guide 92 Chapter 7 VLAN...
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Страница 165: ...VES 1616F 1624F 44 User s Guide 164 Chapter 22 Multicast...
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Страница 177: ...VES 1616F 1624F 44 User s Guide 176 Chapter 24 DHCP...
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Страница 267: ...VES 1616F 1624F 44 User s Guide 266 Chapter 34 IEEE 802 1Q Tagged VLAN Commands...
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