H3C S7500 Series Ethernet Switches Operation Manual

Operation Manual – VLAN
H3C S7500 Series Ethernet Switches Chapter 1
VLAN Overview
1-9
1.3.4 Encapsulation Formats
Table 1-4 Encapsulation formats
Encap
Protocol
Ethernet II 802.3 raw 802.2 LLC
802.2
SNAP
Type value
IP Supported
Not
supported
Not
supported
Supported 0x0800
IPX Supported Supported Supported Supported 0x8137
AppleTalk Supported
Not
supported
Not
supported
Supported 0x809B
1.3.5 Implementation of Protocol-Based VLAN
S7500 series Ethernet switches assign a packet to the specific VLAN by matching the
packet with the protocol template.
The protocol template is the standard to determine the protocol to which a packet
belongs. Protocol templates include standard templates and user-defined templates:
z The standard template adopts the RFC-defined packet encapsulation formats and
values of some specific fields as the matching criteria.
z The user-defined template adopts the user-defined encapsulation formats and
values of some specific fields as the matching criteria.
After configuring the protocol template, you must add a port to the protocol-based
VLAN and associate this port with the protocol template. This port will add VLAN tags to
packets based on protocol types of the packets. The port in the protocol-based VLAN
needs to be connected to a client. However, a common client cannot process
VLAN-tagged packets. In order that the client can process the packets out of this port,
you must configure the port in the protocol-based VLAN as a Hybrid port and configure
the port to remove VLAN tags when forwarding packets of all VLANs.
 Note:
For the operation of removing VLAN tags when the Hybrid port sends packets, refer to
the section “Port Basic Configuration” in this manual.