Filter
Top Products
21-5
Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide
OL-16506-17
Chapter 21 Packet Trace
Configuring Packet Trace
DETAILED STEPS
Command Purpose
Step 1
enable
Example:
Router> enable
Enables the privileged EXEC mode. Enter your
password if prompted.
Step 2
debug platform packet-trace enable
Example:
Router# debug platform packet-trace enable
Enables packet-trace accounting.
Note This command is required for all levels of
inspection.
Step 3
debug platform packet-trace packet pkt-num [fia-trace |
summary-only] [circular] [data-size data-size]
Example:
Router# debug platform packet-trace packets 2048
summary-only
Collects summary data for a specified number of
packets. Captures feature path data by the default,
and optionally performs FIA trace.
pkt-num—Specifies the maximum number of
packets maintained at a given time.
fia-trace—Provides detailed level of data capture,
including summary data, feature-specific data. Also
displays each feature entry visited during packet
processing.
summary-only—Enables the capture of summary
data with minimal details.
circular—Saves the data of the most recently traced
packets.
data-size—Specifies the size of data buffers for
storing feature and FIA trace data for each packet in
bytes. When very heavy packet processing is
performed on packets, users can increase the size of
the data buffers if necessary. The default value is
2048.
Step 4
debug platform packet-trace copy packet {in | out | both}
[L2 | L3 | L4] [size num-bytes]
Example:
Router# debug platform packet-trace copy packet
input size 2048
Enables copying of ingress or egress packets or both.
Also, optionally, allows specifying the layer of the
packet in which the packet copy should start. If the
specified layer does not exist for the packet, the
default behavior is to copy the packet at layer 2.
num-bytes—Specifies the maximum number of
octets to copy. Default value is 64.
Step 5
debug platform condition [ipv4 | ipv6] [interface
interface][access-list access-list -name | ipv4-address /
subnet-mask | ipv6-address / subnet-mask] [ingress| egress]
Example:
Router# debug platform condition interface g0/0/0
ingress
Specifies the matching criteria for tracing packets.
Provides the ability to filter by protocol, IP address
and subnet mask, access control list (ACL),
interface, and direction.