Port Based HVLAN Configuration Introduction
4-185
Software Reference for SwitchBlade x3100 Series Switches (Layer Two Switching)
The TPID, which is used to identify the frame as a tagged frame in 802.1q, has a value of 0x8100. The TPID value
for the HVLAN (the outer tag), is configurable, and should be set depending on the interconnecting vendor’s
recommendation.
Note: To obtain the TPID value that each vendor supports, consult the interconnecting vendor’s
documentation.
4.9.2 Port Based HVLAN Configuration
Figure 4-25 shows a configuration where both 802.1q and HVLANs are created. The 802.1q VLAN (10), is used
for multicasting for video. The HVLAN is provisioned for a business customer who has their own private net-
work and wishes to connect this network to devices on SBx3112 systems. The port-based HVLANs are config-
ured on System A (interfaces 2.0 and 2.1) and on System E (interface 3.0).
VLAN ID (VID) 12 bits The VID identifies which VLAN the frame belongs to, with a range
of 1 to 4094.It consists of the Tag Protocol Identifier (TPID) and
the Tag Control Information (TCI).
TABLE 4-26 VLAN Tag Fields (Continued)
Field Name Length Description
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