文档介绍：Configuring Routing Between VLANs with
IEEE Encapsulation
This chapter describes the required and optional tasks for configuring routing between VLANs with
IEEE encapsulation.
For plete description of mands in this chapter, refer to the the Cisco IOS Switching Services
Command Reference. To locate documentation of mands that appear in this chapter, use the
command reference master index or search online.
To identify the hardware platform or software image information associated with a feature, use the
Feature Navigator on to search for information about the feature or refer to the software
release notes for a specific release. For more information, see the section “Identifying Supported
Platforms” in the chapter “Using Cisco IOS Software.”
The IEEE protocol is used to interconnect multiple switches and routers, and for defining VLAN
topologies. The IEEE standard is extremely restrictive to untagged frames. The standard
provides only a per-port VLANs solution for untagged frames. For example, assigning untagged frames
to VLANs takes into consideration only the port from which they have been received. Each port has a
parameter called a permanent virtual identification (Native VLAN) that specifies the VLAN assigned to
receive untagged frames.
The main characteristics of IEEE are as follows:
• Assigns frames to