Cisco ASR 5500 System Administration Guide

•
Use the trap-on-file-delete keyword to instruct the system to send an SNMP notification (trap) when
a hexdump file is deleted due to lack of space.
Default: Disabled
•
Use the xor-final-record keyword to insert an exclusive OR (XOR) checksum (instead of a CRC
checksum) into the hexdump file header, if the exclude-checksum-record is left at its default setting.
Default: Disabled
•
The + symbol indicates that more than one of the previous keywords can be entered within a single
command.
Enabling or Disabling Hexdump
Hexdump captures can be enabled for protocols in the monitor subscriber and monitor protocol commands
in the Exec Mode. Subscriber information for PCAP trace can be specified using the filters in the monitor
subscriber command. For protocols and filters supported for a specific product, refer the respective product
Administration and Reference guides.
When the monitor subscriber or monitor protocol command is running, use the U or V option to enable
hexdump capturing:
•
U - Mon Display (ON): Use this option to display message captures on the terminal.
◦
Default: ON
◦
When this option is turned off, monitoring will still run in the background.
•
V - PCAP Hexdump (NONE): Use this option to enable or disable capturing hexdump packets globally.
◦
Default: None
◦
V - PCAP Hexdump (ON): Hexdump capture is enabled with the prompt:
Warning :Turning ON/OFF will impact other cli logging terminals, You will interupt others already
using hexdump.
◦
V - PCAP Hexdump (OFF): Hexdump capture is disabled (paused).
Enabling PCAP Trace for MME
This section describes how to enable PCAP trace for MME S1-AP interface and SGsAP interface.
•
Under monitor protocol (monpro), enable S1-AP and SGS, or SCTP protocol option along with V -
PCAP Hexdump (ON), to capture all S1-AP messages in PCAP hexdump.
•
Monitor subscriber (monsub) supports PCAP tracing on S1-AP and SGS filter options.
•
When S1-AP or SGS filter option is selected in monpro/monsub, PCAP Hexdump will have dummy
SCTP header. The following fields are set as dummy in the SCTP header:
◦
Verification tag
◦
Checksum
ASR 5500 System Administration Guide, StarOS Release 21.5
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Packet Capture (PCAP) Trace
Enabling or Disabling Hexdump

Cisco ASR 5500 Specifications

General

Brand	Cisco
Model	ASR 5500
Category	Network Router
Language	English