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ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter 11 Configuring ATM Routing and PNNI
Mobile PNNI Configuration
A border node of the mobile network may have one or more active mobile outside links to one or more
access point switches. The border node uses one of the nodal hierarchy lists (NHL) received from the
access point switches to build an outside nodal hierarchy list (ONHL) that contains a list of the host peer
groups available at the access point switch. An outside nodal hierarchy list is then flooded by the source
border node within the peer group and eventually reaches the peer group leader. In each peer group, and
at all levels of the hierarchy of the mobile network, the peer group leader is responsible for choosing one
outside nodal hierarchy list out of the several that have been advertised by the nodes of its peer group.
The chosen outside nodal hierarchy list is then flooded at the next level of hierarchy by the associated
logical group node. The final decision as to which host peer group to join, is made by the peer group
leader of the highest level peer group in the given mobile network, the node that instantiates the mobile
logical group node.
The mobile PNNI feature is not required to enable PNNI, but is provided to extend PNNI features to
mobile networks.
Connecting Mobile PNNI Networks to Fixed PNNI Networks
The tasks in the following subsections describe how to connect mobile PNNI networks to fixed PNNI
networks.
Configuring a Mobile PNNI Interface
The mobile link in a PNNI interface is a logical group node that advertises the Outside Nodal Hierarchy
List (ONHL) based upon hello messages sent from outside networks.
To configure the mobile PNNI interface, perform these steps, beginning in global configuration mode:
Example
The following example shows how to specify an interface as mobile:
Switch(config)# interface atm 0/0/1
Switch(config-atm-router)# atm pnni mobile
Configuring Mobile PNNI Nodes
A mobile PNNI node cannot have a parent node; it is therefore the highest node in the switching system
once it is configured. To configure a PNNI node as mobile, perform these steps:
Command Purpose
Step 1
Switch(config)# interface atm card/subcard/port
Switch(config-if)#
Specifies an ATM interface and enter interface
configuration mode.
Step 2
Switch(config-if)# atm pnni mobile Specifies a mobile PNNI interface.