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Cisco MGX 8850 Routing Switch Command Reference
Release 2.0, Part Number 78-10467-04 Rev C0, October 2001
Chapter5 PNNI Commands
dsppnni-ptse
dsppnni-ptse
Display PNNI topology state element—displays PTSE tables.
The dsppnni-ptse command displays PNNI topology state elements (PTSEs). The purpose of this
command is troubleshooting, and it requires familiarity with the ATM Forum PNNI 1.0 specification.
Without knowledge of this spe cification, the usefulness of dsppnni-ptse is mi nimal.

PTSE Types

A node indicates its characteristics (such as all its ATM addresses) to all other nodes in the peer group
by broadcasting numerous PTSEs. A no de peri odical ly sen ds (or floods the group with) PTSEs according
to a user-specified timer but also floods th e gr o up w ith P TS Es w he n it tr ig ge rs a change of topology. A
typical topology change is an addition of an ATM address.
Each PTSE carries an indicator of what type of PTSE it is. This PTSE type appears as both a descriptive
string and a number set by the ATM Forum. The section, “Display Contents for dsppnni-ptse” lists the
contents of each informatio n group identified by the PT S E t ype. Five basic types exist, an d various
subtypes exist. The basic types of P TS Es a re:
1. Nodal information group
2. Internal reachable addresses
3. External reachable addresses
4. Horizontal links
5. Uplinks (multiple peer groups only)

Granularity of the Output

The optional parameters let you determ ine t he granul arit y of t he targ et of th e c omman d. The granu lari ty
ranges from the whole peer group to a specific logical port. Additionally, you can specify a “detailed”
display or just the header info rm ation for PTSEs.
If you specify:
•Nothing, the display conta ins header information for all PTSEs for all logical nodes in the network.
•Only the node-index, the output contains all PTSEs sent from the node indicated by node-index.
•Only node-index, node-id, and ptse-id, the display shows the PTSE uniquely i dentified by these
three parameters.
•A detailed display, the display contains information about the header and the contents of the PTSE
and applies to all combina tio n s o f th e o th er p a ra m eters.
Note The node-index is automatically generated. See descri ptio n of dsppnni-node-list.
The ptse-id is generated by the node that sends the PTSE.
You can use dsppnni-ptse to trouble-shoot a faulty desi gnat ed tra nsit li st (DTL) . If a DTL is faul t y, you
can observe the PTSE of nodes on the designated path to confirm the accuracy of the information used
to build the DTL. You can also use dsppnni-ptse to d e te rm in e i f nodes are correctly passing b o th the
topology packets and the Hello packets.