Product guide

Static Virtual LANs (VLANs)
VLAN Restrictions
Jumbo Packet Support on the Series 3400cl
and Series 6400cl Switches
Jumbo packet support for the 3400cl and 6400cl switches is enabled per-VLAN
and applies to all ports belonging to the VLAN. For more information, refer to
the chapter titled “Port Traffic Controls” in the Management and Configura-
tion Guide for your switch. (Jumbo packet support is not available on the
Series 5300xl switches or Series 4200vl switches.)
VLAN Restrictions
■ A port must be a member of at least one VLAN. In the factory default
configuration, all ports are assigned to the default VLAN
(DEFAULT_VLAN; VID = 1).
■ A port can be a member of one untagged, port-based VLAN. All other port-
based VLAN assignments for that port must be tagged. (The “Untagged”
designation enables VLAN operation with non 802.1Q-compliant devices.)
■ A port can be an untagged member of one protocol-based VLAN of each
protocol type. When assigning a port to multiple, protocol-based VLANs
sharing the same type, the port can be an untagged member of only one
such VLAN.
■ With routing enabled on the switch, the switch can route traffic between:
• Multiple, port-based VLANs
• A port-based VLAN and an IPv4 protocol-based VLAN
• A port-based VLAN and an IPv6 protocol-based VLAN
• An IPv4 protocol-based VLAN and an IPv6 protocol VLAN.
Other, routable, protocol-based VLANs must use an external router to
move traffic between VLANs. With routing disabled, all routing between
VLANs must be through an external router.
■ On the 3400cl and 6400cl switches, and on 5300xl switches running a
software version earlier than E.09.xx, prior to deleting a static VLAN, you
must first re-assign all ports in the VLAN to another VLAN. On 5300xl
switches running software version E.09.xx or greater and on 4200vl
switches, you can use the no vlan < vid > command to delete a static VLAN.
For more information, refer to “Creating a New Static VLAN (Port-Based
or Protocol-Based) Changing the VLAN Context Level” on page 2-35.
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