Users Guide

Field Description
this fragment (fragment offset) from the beginning of the
original datagram.
Example
IP: s=10.1.2.62 (local), d=10.1.2.206 (Ma 1/1), len 54, sending
TCP src=23, dst=40869, seq=2112994894, ack=606901739,
win=8191 ACK PUSH
IP: s=10.1.2.206 (Ma 1/1), d=10.1.2.62, len 40, rcvd
TCP src=0, dst=0, seq=0, ack=0, win=0
IP: s=10.1.2.62 (local), d=10.1.2.206 (Ma 1/1), len 226, sending
TCP src=23, dst=40869, seq=2112994896, ack=606901739,
win=8192 ACK PUSH
IP: s=10.1.2.216 (Ma 1/1), d=10.1.2.255, len 78, rcvd
UDP src=0, dst=0
IP: s=10.1.2.62 (local), d=10.1.2.3 (Ma 1/1), len 1500, sending
fragment
IP Fragment, Ident = 4741, fragment offset = 0
ICMP type=0, code=0
IP: s=10.1.2.62 (local), d=10.1.2.3 (Ma 1/1), len 1500, sending
fragment
IP Fragment, Ident = 4741, fragment offset = 1480
IP: s=40.40.40.40 (local), d=224.0.0.5 (Te 4/11), len 64, sending
broad/multicast
proto=89
IP: s=40.40.40.40 (local), d=224.0.0.6 (Te 4/11), len 28, sending
broad/multicast
proto=2
IP: s=0.0.0.0, d=30.30.30.30, len 100, unroutable
ICMP type=8, code=0
IP: s=0.0.0.0, d=30.30.30.30, len 100, unroutable
ICMP type=8, code=0
Usage Information
To stop packets from flooding the user terminal when debugging is turned on, use the
count option.
The access-group option supports only the equal to (eq) operator in TCP ACL rules.
Port operators not equal to (
neq), greater than (gt), less than (lt), or range are not
supported in access-group option (refer to the following example). ARP packets (
arp)
and Ether-type (
ether-type) are also not supported in the access-group option.
The entire rule is skipped to compose the filter.
The access-group option pertains to:
• IP protocol number: from 0 to 255
• Internet control message protocol (icmp) but not the ICMP message type (from 0
to 255)
• Any internet protocol (ip)
• Transmission Control Protocol (tcp) but not on the rst, syn, or urg bits
• User Datagram Protocol (udp)
In the case of ambiguous access control list rules, the debug ip packet access-
control command is disabled. A message appears identifying the error (refer to the
Example below).
IPv4 Routing 983