HP 3500 Series Advanced Traffic Management Guide

1-10
Static Virtual LANs (VLANs)
Static VLAN Operation
Figure 1-4. Example of Connecting Multiple VLANs Through the Same Link
Introducing Tagged VLAN Technology into Networks Running Legacy
(Untagged) VLANs. You can introduce 802.1Q-compliant devices into net-
works that have built untagged VLANs based on earlier VLAN technology. The
fundamental rule is that legacy/untagged VLANs require a separate link for
each VLAN, while 802.1Q, or tagged VLANs can combine several VLANs in one
link. This means that on the 802.1Q-compliant device, separate ports (config-
ured as untagged) must be used to connect separate VLANs to non-802.1Q
devices.
Figure 1-5. Example of Tagged and Untagged VLAN Technology in the Same
Network
For more information on VLANs, refer to:
■ “Overview of Using VLANs” (page 1-49)
■ “Menu: Configuring VLAN Parameters (page 1-21)
Red Server
HP Switch
Blue Server
HP
Switch
Red
VLAN
Red
VLAN
Blue
VLAN
Blue
VLAN
Red
VLAN
The same link carries Red
VLAN and Blue VLAN traffic.
Red VLAN
Blue VLAN
Red Server
HP Switch
Blue Server
HP
Switch
Red
VLAN
Red
VLAN
Blue
VLAN
Blue
VLAN
Red
VLAN
VLAN tagging
enables the Link to
carry Red VLAN and
Blue VLAN Traffic
Blue
VLAN
Non-802.1Q
Switch
The legacy (non-802.1Q
compliant) switch requires a
separate link for each VLAN.

HP 3500 Series Specifications

General

Model	HP 3500 Series
Layer	Layer 3
MAC Address Table Size	16, 000 entries
Type	Managed
Uplink	SFP
PoE	Optional
Management	Web, CLI, SNMP
Routing Protocol	Static, RIP
Power Supply	Internal
Form Factor	1U rack-mountable
Jumbo Frame Support	Yes
Operating Temperature	32°F to 113°F (0°C to 45°C)
Ports	24 or 48 10/100/1000 ports