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ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter 11 Configuring ATM Routing and PNNI
PNNI Connection Trace
Cfgd highest join level : 0 (default)
Cfgd default peer group ID: Not configured
Mobile LGN host PG joined?: Yes
Mobile LGN's joined PG ID : 72:47.0091.3333.3333.3333.0000.0000
Configuring a Limit for the ONHL
You can optionally specify the highest PNNI hierarchy level to be advertised in the NHL. A mobile
network cannot see higher than the highest level advertised in the NHL and is therefore prevented from
connecting at levels higher than those advertised by the fixed network. This feature can offer protection
from poorly configured mobile networks.
To configure the highest hierarchy level for the ONHL, perform these steps, beginning in the
configuration mode:
Example
The following example shows how to configure the highest advertised PNNI level in the ONHL:
Switch(config)# atm interface 0/0/1
Switch(config-if)# atm pnni nodal-hierarchy-list highest-level 48
PNNI Connection Trace
The PNNI connection trace function provides information about switches and links traversed by a
specified connection through a PNNI network. A trace connection traces existing switched connections
that have been established through normal signaling procedures. Depending upon the options specified
when initiating the trace, you get the following connection details:
• The node ID of each node
• One port ID for each node (except endpoints)
• Both port IDs for endpoints
• The virtual path identifier (VPI) and virtual channel identifier (VCI) value on each link
• The call-reference value on each link
• The end-point reference value on each link for point-to-multipoint connections
A trace connection can be initiated from any switch that a connection or party traverses, as long as the
switch is running PNNI. The connection or party may be going beyond the PNNI network (for example,
through a public ATM network), but the trace connection only collects information only from switches
within the PNNI network. Starting from an interface on a switch, the trace connection proceeds in one
direction, and the connection or party is traced in only this direction.
A connection can be traced in any direction, regardless of the direction in which the call was established.
A trace connection is accomplished using two new signaling messages: Trace-Connection (TC) and
Trace-Connection-Acknowledgment (TCAck). Both types of messages contain the Trace-Transit-List
Command Purpose
Step 1
Switch(config)# interface atm card/subcard/port
Switch(config-if)#
Enters ATM configuration mode.
Step 2
Switch(config-atm-router)# atm pnni
nodal-hierarchy-list highest-level level
Specifies highest level in PNNI hierarchy to
advertise in the NHL.