HP A5120 EI Series Configuration Guide

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CAUTION:
 Do not configure both the dsap-id and ssap-id arguments in the protocol-vlan command as 0xe0 or 0xff when
configuring the user-defined template for llc encapsulation. Otherwise, the encapsulation format of the matching
packets will be the same as that of the ipx llc or ipx raw packets respectively.
 When you use the mode keyword to configure a user-defined protocol template, do not set etype-id in ethernetii
etype etype-id to 0x0800, 0x8137, 0x809b, or 0x86dd. Otherwise, the encapsulation format of the matching
packets will be the same as that of the IPv4, IPX, AppleTalk, and IPv6 packets respectively.
 A protocol-based VLAN on a hybrid port can process only untagged inbound packets, whereas the voice VLAN
in automatic mode on a hybrid port can process only tagged voice traffic. Do not configure a VLAN as both a
protocol-based VLAN and a voice VLAN. For more information, see the chapter ―Voice VLAN configuration.‖
 After you configure a command on a Layer 2 aggregate interface, the system starts applying the configuration to
the aggregate interface and its aggregation member ports. If the system fails to do that on the aggregate
interface, it stops applying the configuration to the aggregation member ports. If it fails to do that on an
aggregation member port, it skips the port and moves to the next port.
 If a protocol template using SNAP encapsulation is configured for a specific VLAN, the SNAP packets with an
all-zero organizationally unique identifier (OUI) can be assigned to the VLAN, whereas the SNAP packets with
non-all-zero OUIs cannot be assigned to the VLAN.
Protocol-based VLAN configuration example
Network requirements
In a lab environment, most hosts run the IPv4 protocol, and the rest of the hosts run the IPv6 protocol for
teaching purposes. To avoid interference, isolate IPv4 traffic and IPv6 traffic at Layer 2.
Figure 37 Network diagram for protocol-based VLAN configuration
GE1/0/2GE1/0/1
GE1/0/11
GE1/0/12
IPv4 Host A IPv4 Host BIPv6 Host A IPv6 Host B
IPv4 Server IPv6 Server
Device
L2 Switch A
L2 Switch B
VLAN 100 VLAN 100
VLAN 100
VLAN 200 VLAN 200
VLAN 200
Configuration consideration
Create VLANs 100 and 200. Associate VLAN 100 with IPv4, and associate VLAN 200 with IPv6.
Configure protocol-based VLANs to isolate IPv4 traffic and IPv6 traffic at Layer 2.

HP A5120 EI Series Specifications

General

Uplink Ports	4 x SFP
Stacking	No
Management	CLI, Web, SNMP
Routing Protocols	RIP, OSPF
Power Supply	AC
MAC Address Table Size	16K
Dimensions	440 x 430 x 44 mm
Operating Temperature	0°C to 45°C
Operating Humidity	10% to 90% non-condensing
Model	HP A5120-24G EI Switch (JG234A)
VLANs	4094