Field Description
TCP src= Displays the source and destination ports, the sequence
number, the acknowledgement number, and the window
size of the packets in that TCP packets.
UDP src= Displays the source and destination ports for the UDP
packets.
ICMP type= Displays the ICMP type and code.
IP Fragment States that it is a fragment and displays the unique number
identifying the fragment (Ident) and the offset (in 8-byte
units) of 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 0/0), len 54, sending
TCP src=23, dst=40869, seq=2112994894, ack=606901739,
win=8191 ACK PUSH
IP: s=10.1.2.206 (Ma 0/0), 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 0/0), len 226,
sending
TCP src=23, dst=40869, seq=2112994896, ack=606901739,
win=8192 ACK PUSH
IP: s=10.1.2.216 (Ma 0/0), 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 0/0), 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 0/0), len 1500,
sending fragment
IP Fragment, Ident = 4741, fragment offset = 1480
IP: s=40.40.40.40 (local), d=224.0.0.5 (Gi 4/11), len 64,
sending broad/multicast
proto=89
IP: s=40.40.40.40 (local), d=224.0.0.6 (Gi 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
IPv4 Routing 759