Juniper JUNOS OS 10.3 - SOFTWARE, Manual

Page: 2227 / 3946

show isis statistics
Syntax show isis statistics
<instance instance-name>
<logical-system (all | logical-system-name)>
Syntax (EX Series
Switch)
show isis statistics
<instance instance-name>
Release Information Command introduced before Junos OS Release 7.4.
Command introduced in Junos OS Release 9.0 for EX Series switches.
Description Display statistics about Intermediate System-to-Intermediate System (IS-IS) traffic.
Options none —Display IS-IS traffic statistics for all routing instances.
instance instance-name
—(Optional) Display statistics for the specified routing instance.
logical-system (all | logical-system-name ) —(Optional) Perform this operation on all logical
systems or on a particular logical system.
Required Privilege
Level
view
Related
Documentation
clear isis statistics on page 2030
•
List of Sample Output show isis statistics on page 2132
Output Fields Table 273 on page 2131 describes the output fields for the show isis statistics command.
Output fields are listed in the approximate order in which they appear.
Table 273: show isis statistics Output Fields
Field Description Field Name
Protocol data unit type:
•
CSNP
—Complete sequence number PDUs contain a complete list of all link-state PDUs in the IS-IS
database. CSNPs are sent periodically on all links, and the receiving systems use the information
in the CSNP to update and synchronize their link-state PDU databases. The designated router
multicasts CSNPs on broadcast links in place of sending explicit acknowledgments for each
link-state PDU.
• IIH —IS-IS hello packets are broadcast to discover the identity of neighboring IS-IS systems and to
determine whether the neighbors are Level 1 or Level 2 intermediate systems.
•
LSP
—Link-state PDUs contain information about the state of adjacencies to neighboring IS-IS
systems. Link-state PDUs are flooded periodically throughout an area.
•
PSNP
—Partial sequence number PDUs are sent multicast by a receiver when it detects that it is
missing a link-state PDU; that is, when its link-state PDU database is out of date. The receiver sends
a PSNP to the system that transmitted the CSNP, effectively requesting that the missing link-state
PDU be transmitted. That routing device, in turn, forwards the missing link-state PDU to the
requesting routing device.
•
Unknown
—The PDU type is unknown.
PDU type
2131 Copyright © 2010, Juniper Networks, Inc.
Chapter 74: Operational Commands for Layer 3 Protocols