WESM zl Management and Configuration Guide Supplement 2007-09

16
Using zl Switch Features for the Module
An Auto-VLAN is created when:
■ a Wireless Edge Services zl Module or Redundant Module is first
inserted into a zl switch, or
■ a radio port that is directly connected to a PoE-enabled port on the zl
switch is detected.
The Auto-VLAN is created with the first available VLAN ID, starting from the
vlan-base (the default is 2100). There can be only one Auto-VLAN in a switch.
If one exists already, a new one is not created.
Auto-provisioning configures and manages the Module and switch ports to
automatically supply communication between radio ports and the Module. In
the default configuration, when a Module is inserted, auto-provisioning:
■ adds its internal downlink port (<slot-id>DP) to the Auto-VLAN as a
tagged member
■ removes the downlink port from VLAN 1, and
■ places the Module’s uplink port (<slot-id>UP) into VLAN 1 as a tagged
member
In the default configuration, LLDP is globally-enabled and enabled on the zl
switch ports, and auto-provisioning is enabled. When a radio port connection
to the wireless services-enabled switch is discovered (through LLDP data it
transmits), the connecting switch port is placed in the Auto-VLAN as an
untagged member using a temporary override of the port’s static VLAN. The
override is temporary in that it terminates when the radio port is disconnected,
or a higher-priority override is made to the port. A VLAN override is not saved
in a configuration file and is lost when the switch reboots.
When a radio port is disconnected from the zl switch, the temporary VID is
removed and the switch port returns to the VLAN(s) for which it was statically
configured as a member.
Note Auto-provisioning does not occur if the radio port connects to a switch port
that already has a temporary override VLAN assigned.