Cisco MWR 2941 Installation Manual Page 558

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Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5 Command Reference, Cisco IOS Release 15.1(3)MR
OL-26895-01
Chapter Cisco MWR 2941 Router Command Reference, Release 15.1(3)MR
show ip tcp header-compression
Table 1-40 describes significant fields shown in the display.
Table 1-40 show ip tcp header-compression Field Descriptions
Field Description
Interface e12/0
(compression on, IETF)
Interface type and number on which compression is enabled.
Rcvd: Received statistics described in subsequent fields.
total Total number of TCP packets received on the interface.
compressed Total number of TCP packets compressed.
errors Number of packets received with errors.
status msgs Number of resynchronization messages received from the peer.
dropped Number of packets dropped due to invalid compression.
buffer copies Number of packets that needed to be copied into bigger buffers for
decompression.
buffer failures Number of packets dropped due to a lack of buffers.
Sent: Sent statistics described in subsequent fields.
total Total number of TCP packets sent on the interface.
compressed Total number of TCP packets compressed.
status msgs Number of resynchronization messages sent from the peer.
not predicted Number of packets taking a non-optimal path through the
compressor.
bytes saved Total savings in bytes due to compression.
bytes sent Total bytes sent after compression.
efficiency improvement
factor
Improvement in line efficiency because of TCP header
compression.
Connect: Connection statistics described in subsequent fields.
rx slots Total number of receive slots.
tx slots Total number of transmit slots.
misses Indicates the number of times a match could not be made. If your
output shows a large miss rate, then the number of allowable
simultaneous compression connections may be too low.
collisions Total number of collisions.
negative cache hits Total number of negative cache hits.
Note This field is not relevant for TCP header compression; it
is used for Real-Time Transport Protocol (RTP) header
compression.
free contexts Total number of free contexts.
Note Free contexts (also known as connections) are an
indication of the number of resources that are available,
but not currently in use, for TCP header compression.
hit ratio Percentage of times the software found a match and was able to
compress the header.
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