Huawei IP Phone eSpace
7810&7820&7830&7850&7870&7803X
Administrator Guide
5 Appendix
Issue 01 (2011-12-31)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
152
Before capturing packets, you can filter packets. The expression used to filter packets is
host<IP address>.Only the packets with the specified IP address are captured. Common
expressions used to filter packets are as follows:
[src|dst] host <host>
ether [src|dst] host <ehost>
gateway host <host>
[src|dst] net <net>[{mask <mask>}|{len <len>}]
[tcp|udp] [src|dst] port <port>
less|greater <length>
ip|ether proto <protocol>
ether|ip broadcast|multicast
<expr>relop<expr>
Packet Analysis
1.
Packet Filtering
In actual applications, there is a large amount of data in packet capture. To rapidly locate
the required packets, you need to use the packet filtering function.
To filter packets, enter the expression in the
Filter
text box and click
Apply
. For
example, to filter TCP packets, enter
tcp
in the
Filter
text box and click
Apply
.
Figure 5-24
Packets that are not filtered