3Com Switch 7750 Configuration Guide

100 CHAPTER 11: VLAN CONFIGURATION
Configuring a
Protocol-Based VLAN
Creating Protocol
Template for
Protocol-Based VLAN
Configuration prerequisites
Create a VLAN before configuring a protocol-based VLAN.
Configuration procedure
When you are creating protocol templates for protocol-based VLANs, the at, ip
and ipx keywords are used to create standard templates, and the mode keyword
is used to create user-defined templates.
c
CAUTION: In a VLAN, it is not allowed to configure two templates with the same
protocol type and encapsulation format. If any parameter in a user-defined
template has the same value as the corresponding parameter in the standard
template, the user-defined template and the standard template cannot be
configured in the same VLAN.
Pay attention to the following notices about the template configuration
■ It is not allowed to configure both ipx llc standard template and LLC
user-defined template whose dsap-id and ssap-id are both 0xe0 in the same
VLAN.
■ It is not allowed to configure both ipx raw standard template and LLC
user-defined template whose dsap and ssap are both ff in the same VLAN.
■ It is not allowed to configure both ipx ethernetii standard template and
EthernetII user-defined template whose etype is 8137 in the same VLAN.
■ It is not allowed to configure both ipx snap standard template and SNAP
user-defined template whose etype is 8137 in the same VLAN.
■ When the values of the dsap-id and ssap-id arguments are AA, the packet
encapsulation type is not llc but snap. To avoid template conflict, the system
disable the value AA for the dsap-id and ssap-id arguments when you
configure LLC user-defined template.
In addition, pay attention to the following notices about IP template
■ If a packet can match both Ipv4-based VLAN and the VLAN based on other
protocol, Ipv4-based VLAN takes higher priority.
Table 52 Create protocol types of VLANs
Operation Command Description
Enter system view system-view -
Enter VLAN view vlan vlan-id Required
Create the protocol template
for the VLAN
protocol-vlan
[ protocol-index ]{at | ip
[ ip-address [ net-mask ]] |
ipx { ethernetii | llc | raw |
snap } | mode { ethernetii
[etype etype-id] | llc { dsap
dsap-id [ ssap ssap-id] | ssap
ssap-id } | snap [etype
etype-id]}}
Required